103574 v2 REPUBLIC OF ZIMBABWE GREATER HARARE WATER AND SANITATION STRATEGIC PLAN GREATER HARARE WATER AND SANITATION INVESTMENT PLAN INVESTMENT PLAN REPORT (FINAL) VOLUME II: APPENDIX June 2014 Acknowledgements The preparation and writing of this report could not have been possible without the invaluable support of theWorld Bank, the Zimbabwe Multi-donor Trust Fund, City of Harare (Harare Water), Chitungwiza Municipality, Norton Town Council, Ruwa Town Council, Epworth Local Board, GIZ, Dorsch International Consultants GmbH, Lahmeyer GKW Consult GmbH, BCHOD and ZimSTAT. We are grateful for the level of cooperation and assistance provided by the dedicated professionals from these institutions. June 2014 Stefan Dörner Rocky Kasanga H.P. Gauff Ingenieure H.P. Gauff Ingenieure Project Manager Deputy Project Manager Preface This report is the outcome of a combined financing and supervisory effort by the Zimbabwe Multi-Donor Trust Fund (Zim-Fund) and the Multi-Donor Analytical Trust Fund (MDTF) under the World Bank as well the operational contributions of the beneficiary local authorities. The Zim- Fund financed the study that generated the Harare and Chitungwiza input data, while the MDTF financed the additional investigations in Ruwa, Epworth and Norton and the development of the integrated water and sanitation investment plan for Greater Harare. The Consultant signed two separate contracts with the two financiers with different contractual obligations regarding submission of reports. Under the Zim-Fund project, the Consultant is obliged to issue individual reports for Harare, Chitungwiza, Kwekwe, Chegutu, Masvingo and Mutare. Under the World Bank project (which includes Harare and Chitungwiza), the consultant is required to issue a single report covering all the project towns. Considering the inter-linkages and dependencies of the technical and institutional aspects of water and sanitation service provision in the Harare area, the financiers resolved that it would be in the best interest of the Clients to receive a single combined report for the Zim-Fund and the World Bank projects instead of issuing two separate reports for Harare and Chitungwiza as per the Zim-Fund contract. This arrangement will allow the Consultant to provide the necessary information on the integrated Greater Harare water and sanitation systems in one consolidated document. Greater Harare Water and Sanitation Investment Plan Investment Plan Report ToC GREATER HARARE WATER AND SANITATION INVESTMENT PLAN INVESTMENT PLAN REPORT VOLUME II: APPENDIX Index of Appendices Appendix 1 Introduction Appendix 1.1 Terms of Reference (11 Pages) Appendix 1.2 Comments to the Draft Report (15 Pages) Appendix 1.3 Minutes of Stakeholder Workshop (7 Pages) Appendix 1.2 Bibliography (4 Pages) Appendix 3 Demographic Profile and Macroeconomic Outlook Appendix 3.1 Detailed Demographic Profile Report – Harare (22 Pages) Appendix 3.2 Detailed Demographic Profile Report – Chitungwiza (21 Pages) Appendix 3.3 Detailed Demographic Profile Report – Epworth (17 Pages) Appendix 3.4 Detailed Demographic Profile Report – Norton (17 Pages) Appendix 3.5 Detailed Demographic Profile Report – Ruwa (16 Pages) Appendix 3.6 Population Projections Validation Report (3 Pages) Appendix 4 Existing Water Supply and Sewerage Situation Appendix 4.1 Water and Sewerage Infrastructure Assessment Report - Harare (142 Pages) Appendix 4.2 Water and Sewerage Infrastructure Assessment Report - Chitungwiza (34 Pages) Appendix 4.3 Water and Sewerage Infrastructure Assessment Report – Epworth (11 Pages) Appendix 4.4 Water and Sewerage Infrastructure Assessment Report - Norton (28 Pages) Appendix 4.5 Water and Sewerage Infrastructure Assessment Report - Ruwa (26 Pages) Appendix 5 Water Demand and Wastewater Flow Projections Appendix 5.1 Water Demand and Wastewater Flow Forecasts Tables – Greater Harare (3 Page) Appendix 5.2 Water Demand and Wastewater Flow Forecasts Tables – Harare (3 Page) Appendix 5.3 Water Demand and Wastewater Flow Forecasts Tables – Chitungwiza (3 Page) Appendix 5.4 Water Demand and Wastewater Flow Forecasts Tables – Epworth (3 Page) Appendix 5.5 Water Demand and Wastewater Flow Forecasts Tables – Norton (3 Page) Appendix 5.6 Water Demand and Wastewater Flow Forecasts Tables – Ruwa (3 Page) Appendix 9 Cost Estimates Appendix 9.1 Detailed Investment Cost Estimates - Harare (16 Pages) Appendix 9.2 Detailed Investment Cost Estimates - Chitungwiza (4 Pages) Gauff Ingenieure Page I Greater Harare Water and Sanitation Investment Plan Investment Plan Report ToC Appendix 9.3 Detailed Investment Cost Estimates - Epworth (3 Pages) Appendix 9.4 Detailed Investment Cost Estimates - Norton (3 Pages) Appendix 9.5 Detailed Investment Cost Estimates - Ruwa (3 Pages) Appendix 11 Financial Analysis Appendix 11.1 Financial Model (30 Page) Gauff Ingenieure Page II Greater Harare Water and Sanitation Strategic Plan Investment Plan Report Greater Harare Water and Sanitation Investment Plan APPENDIX 1 Gauff Ingenieure Greater Harare Water and Sanitation Strategic Plan Investment Plan Report Greater Harare Water and Sanitation Investment Plan APPENDIX 1.1: TERMS OF REFERENCE Gauff Ingenieure Greater Harare Water and Sanitation Investment Plan Terms of Reference June 4, 2013 1 Background Zimbabwe Multi-Donor Trust Fund 1. The deterioration of Zimbabwe’s economic and social situation culminated in the severe humanitarian crisis of 2008 that included widespread food shortages and a cholera epidemic. Following the signing of the Global Political Agreement in September 2008 and the forming of the Government of National Utility in February 2009 there has been on-going dialogue between the Government of Zimbabwe and donors. The African Development Bank (AfDB), being a significant and committed contributor to development in Africa, having been established for the purpose of contributing to the sustainable economic development and social progress of its African Member States, has been requested by a group of donors, who are willing to assist Zimbabwe, to establish and administer the Zimbabwe Multi-Donor Trust Fund (the “Zim-Fund”). 2. The purpose for the Zim-Fund is to contribute to early recovery and development efforts in Zimbabwe by mobilising donor resources and promoting donor coordination so as to channel financial assistance to such efforts. One aim of the interventions to be supported by the Zim-Fund is to save lives and protect assets. Critical to the achievement of these goals are: financial and technical support to activities that are consistent with the recovery priorities of the Government and mobilisation of pooled donor resources. These are based on a common understanding of the country’s recovery needs and linked to effective coordination, and complementary, with other related activities that are supported outside the Zim-Fund and efficient monitoring and evaluation of outputs and impacts. 3. As part of the Zim-Fund interventions, the Ministry of Finance, Government of the Republic of Zimbabwe has received a grant and intends to apply the proceeds towards the Urgent Water Supply and Sanitation Rehabilitation Project (UWSSRP). This covers rehabilitation to the water supply and sanitation systems in 6 urban centres, namely: Harare, Chitungwiza, Mutare, Masvingo, Kwekwe and Chegutu. 4. In December 2011, the Ministry of Finance through the Zim-Fund engaged the services of an Implementing Entity (IE) for the UWSSRP (Lahmeyer GKW Consult GmbH formerly Pöyry Environment GmbH) to, among other services, design and supervise implementation of immediate measures works in the 6 municipalities and provide coordination services for water and sanitation interventions financed by UWSSRP. Besides the physical works implementation, the Zim-Fund intends to finance ‘consultancy services for the development of Medium to Long Term Water Supply and Sanitation Investment Plans’. The Investment Plans are intended to provide useful guides to the Municipalities and the Zim-Fund on the financing requirements and the phasing of future investments. 1 5. A summary of the terms of reference for developing investment plans for the towns of Harare, Chitungwiza, Mutare, Masvingo, Kwekwe and Chegutu is given in Annexure 1. 6. The key objectives of the terms of reference are to develop detailed water supply and sanitation investment plans that meet medium term (until 2020) and long term (until 2030) infrastructure requirements for the six municipalities. Apart from Mutare, the other cities/towns have no specific investment planning document in place for water supply and sanitation infrastructure development. Hence, the outcome of this project will be bankable Investment Plans that the municipalities can use as guide for future infrastructure and institutional development. Multi-donor Analytical Trust Fund 7. The World Bank was requested by the City of Harare to provide advisory services in support of the development of a strategic plan for Water Supply and Sanitation for Greater Harare which, for the purposes of this document, is taken to include the local authorities for the City of Harare, Chitungwiza Municipality, Norton Town Council, Ruwa Local Board and Epworth Local Board. 8. The key objective of the support for the development of a Greater Harare Water and Sanitation Strategic Plan is to restore water services in the short-term and expand and improve services in the long-term. The work includes the assessment of institutional arrangements for restoring service delivery, improving operational efficiency and ensuring sustainable long-term water services in the Greater Harare area, reviewing investment plans, arranging an investors’ conference and attracting funds to achieve the objectives. 9. The expected outcomes include improved water supply and sanitation services; better planning and management; improved customer involvement and confidence and willingness to pay; improved efficiency, cost recovery, improved equity in provision and sustainability; improve accountability to council, government, customers and key stakeholders; improved and optimized resource management (financial and human); and attracting funding through a proper funding strategy which will ensure expansion and augmentation of the water supply and sanitation systems. 10. The key scope of works related to investment are as follows:  outline a clear investment plan, which articulates immediate, short term and long term financial needs, and captures strategies to restore customer confidence. The plan should also prioritize needs and wherever possible be based on economic assessments that determine best options.  Develop pathways to return Greater Harare to the long term desired situation where Greater Harare can raise its own capital on financial markets.  Once institutional and financial reforms are in place, hold an investor conference to raise capital. 2 11. The key objective and output of the Zimfund-AfDB project (bankable investment plans) complements the work in developing the Greater Harare Water and Sanitation Strategy. 2 Objectives 12. The goal of the water supply and sanitation sector in Zimbabwe is to improve the health and social wellbeing of the population, and to enhance the performance of the national economy, through equitable provision of adequate water supply and sanitation services. 13. The objective of this project component is to develop an integrated water supply and sanitation investment plan that meet medium term (until 2020) and long term (until 2030) infrastructure requirements for Greater Harare. The outcome of this project will be bankable Investment Plans for the Greater Harare area that the municipalities can use as guide for future infrastructure and institutional development . 14. This will entail developing an integrated investment plan for Greater Harare, incorporating the investment plans developed under the Scope of Works developed for the Zim-fund Investment Plans for city of Harare and Chitungwisa and include the investment needs of Epworth, Ruwa and Norton. When undertaking this work, to consider the Greater Harare area as a single economic and water management system. 15. This work will not duplicate the work undertaken in the Zimfund Investment Planning contract referred to in Paragraph 5 above, but complement it by developing a single integrated output for Greater Harare, incorporating investment needs for Epworth, Ruwa and Norton. 16. In undertaking the work, the consultant shall bear in mind the relative sizes and economic significant of the towns comprising Greater Harare and allocate effort appropriately to achieve the overall objective. 3 Scope of services Task A: Data Collection and Establishment of Planning Framework 17. The Consultant shall collect available data, reports, existing drawings, plans and maps related to the project for Epworth, Ruwa and Norton. 18. The consultant shall take into account all relevant work undertaken and underway in each town. Available documentation includes:  Rapid assessment reports prepared for UNICEF and GIZ  The Report on Technical Assistance for Water and Wastewater Treatment Works in the City of Harare prepared by Arup for the World Bank  Documentation prepared for the Greater Harare Water Supply and Sanitation Strategy “Five town workshop” held at Troutbeck, Nyanga from 8 to 10 April 2013 3 Work undertaken or under way includes:  Rehabilitation at Prince Edward Water Treatment Works by the French Red Cross  Rehabilitation of parts of Morton Jaffray Water Treatment Works by the International Committee of the Red Cross and by UNICEF.  Rehabilitation in Harare and Chitungwiza under the ZImfund administered by the African Development Bank  The Japanese aid organization JICA has engaged a consultant to prepare a water and sanitation master plan for Chitungwiza  The World Bank has engaged a consultant to prepare a national water and sanitation investment analysis (rapid assessment) which includes consideration of investments needed within Greater Harare.  The German aid organization GIZ is providing institutional support to Norton and will carry out works to improve water supply to vulnerable communities and prevent discharge of raw sewage to Lake Manyame.  The City of Harare is about to sign a contract with China National Machinery and Equipment Import and Export Corporation (CMEC) under a loan agreement with China Export and Import Bank (Eximbank) to do rehabilitation mainly in the water and sewage treatment plants. It is understood that the scope of work is under discussion as Harare would like to focus more on the water demand management measures in the network.  The City of Harare has begun a program to achieve 24/7 supply to its customers. It is using site inspections with GPS to create a data base of consumers, discover unmetered consumers and identify leaks. So far a high density housing area, a low density housing area and an industrial area have been inspected.  Ruwa Town Council is implementing a pipeline from Nora Dam to augment its supply. Task B: Use of Planning Criteria 19. The consultant shall use the same planning criteria development in the consulting project referred to in Paragraph 5 above. Task C: Water Demand Forecasts until year 2030 20. Assess economic base of Greater Harare area and develop scenarios for future economic development. Three scenarios for the economic recovery and future economic growth of Greater Harare will be developed. This will not involve collection of empirical data, but be undertaken through consultation with the World Bank country economist taking into account any relevant and available studies on the city economic and its growth prospects. The three scenarios should encompass the following: “low growth” (no full economic recovery), “moderate growth” (recovery of city economy, but over a long period of time) and “high growth” (rapid recovery of city economy and ongoing growth of economy). 21. Develop medium and long term water requirements and wastewater flows for Greater Harare (all five towns) taking into account: 4 a. Census 2012 population data and any other relevant, recent and reliable data on population and existing status of property and housing development and service provision. b. The work done under Zimfund for Harare and Chitungwiza. c. Incorporating water demand estimates for Ruwa, Epworth and Norton (bearing in mind the level of effort remand in paragraph 16 above). d. Realistic estimates of per capita and/or household (per property) consumption, and non-domestic consumption, taking into account the economic scenarios referred to in the previous paragraph. e. The strategic inputs available from the Greater Harare Strategic plan process, in particular, the rapid assessment of existing status of infrastructure and investments and the strategic sanitation investment report. In particular, the lack of affordability of a universal sewer network and wastewater treatment system, and the need for a ‘sewer boundary’, needs to be factored into the demand assessment Task D: Assessment of Existing Water and Sewerage Infrastructure 22. The Consultant shall assess the capacity of the existing infrastructure in Ruwa, Epworth and Norton and assume the condition of this infrastructure based on the work undertaken under separate contract for Zimfund for Harare and Chitungwiza, adjusted on the basis of engagement with relevant officials. The purpose of this activity is to estimate the capacity deficits with regard to the medium and long term water requirements determined under Task C. It is important to note that some of the deficiencies may be mitigated by simply rehabilitating or replacing the existing facilities. Hence rehabilitation of facilities is an important component of the investment costs. 23. For the water distribution network condition assessment, no additional work is to be undertaken in this component of the study, but reliance will be made on the work undertaken in the Zimfund project as described above. 24. Similar to the water distribution network, the capacity and condition of the sewer network shall be assessed for Ruwa, Epworth and Norton. Task E: Develop Medium and Long Term Investment Proposals 25. The Consultant shall propose medium and long term investment measures based on the projected water and wastewater service requirements and the assessed capacities of the existing facilities for Greater Harare, taking also as an input the work on Harare and Chitungwiza undertaken for the Zimfund project. 26. Where new water sources and treatment facilities are to be considered, the Consultant shall develop and evaluate alternative solutions before selecting the most technically and financially feasible option. It is important that each project component is selected on the basis a rational prioritization, with reference to its financial and economic costs, measured against its benefits or effectiveness (economic, financial, social and equity). 5 27. This assessment will consider the infrastructure requirements and demand for the Greater Harare area as a whole and proposals shall be developed for the most cost effective development and management of a single water and wastewater infrastructure system for the greater Harare Area, taking into account the work undertaken for City of Harare and Chitungwiza in the Zimfund project. 28. The Consultant shall prepare a single consolidated investment plan for Greater Harare, ensuring complementarity, alignment, non-redundancy and efficient resource use and taking into account an affordable investment envelop informed by the financial model (see Financial Analysis below). Task F: Cost Estimates 29. The Consultant shall prepare cost estimates of the proposed investment measures. The Consultant shall develop realistic unit costs that take into account the current country/regional market conditions and inflationary expectations. Task G: Financial Analysis 30. The aim of the financial analysis is to ensure that there will be sufficient funds to cover the expenditure requirements during the life of the facilities and to ensure that the project benefits are greater than the project costs over the life of the investment taking into account the time value of money. The Consultant shall, therefore, carry out a comprehensive financial analysis of the project using an appropriate financial model that captures the expected investment and recurrent expenditure over the project life (until 2030). Revenue expectations (tariffs) should be estimated, taking into account the ability and willingness to pay of the target population. 31. The consultant will develop a financial model for the Greater Harare area for water and sanitation. The financial model will be for the provision of financially sustainable water and sanitation services for Greater Harare, taking into account investment needs, affordability, realistic tariffs, efficient operating costs and a realistic performance improvement trajectory. The model will project a realistic revenue envelope and costs for provision of water and sanitation services over a period of 10 years, based on realistic performance benchmarks. Task H: Institutional Assessment 32. The consultant will provide a brief overview of existing capacity for provision of water supply and sanitation in the three towns – Ruwa, Epworth and Norton, describing staff numbers and skill levels and any other relevant measures of capacity and competence to undertake the necessary tasks effectively. An overall institutional assessment for Greater Harare is not required. Task I: Environmental and Social 33. The Consultant is required to work with the Councils (especially the Town Engineer) of the three towns (Ruwa, Epworth and Norton) in collecting data for the investment needs analysis. 6 34. The draft Investment Plan for Greater Harare shall be presented by the consultant to the relevant stakeholders for review and endorsement, as part of the Greater Harare Strategic Plan process. Task K: Preparation of materials for Investors conference 35. The consultant shall prepare materials for an investor conference, including: a. Integrated investment plan for the Greater Harare area. b. Summaries of the bankable investment projects which form a part of this plan. c. Presentation of financial model results showing affordable revenue and investment envelop. 4 Key Staff Same as AfDB/Zimfund Investment planning project. 5 Minimum experience Same as AfDB/Zimfund Investment planning project. 6 Assignment period An additional month over and above the time period for the parallel AfDB project. 7 Estimated level of effort Sixteen person months over 6 calendar months. 8 Data, Local Services, Personnel, and Facilities to be provided Same as AfDB/Zimfund Investment planning project 9 Deliverables Deliverable 1: Inception report An inception report within one month of commencement. 7 Deliverable 2: Monthly progress reports 36. The Consultant shall prepare brief monthly progress reports describing the current status of works, the main activities performed and any special events and problems encountered. These reports shall preferably be in tabular format and limited to one or two pages. The reports shall be transmitted by e-mail to the World Bank. Feedback from the World Bank shall also be communicated by email. Matters arising from the progress report may also be solved by way of meetings whenever necessary. Deliverable 3: Investment Plan Report 37. A single Investment Plan shall be prepared for Greater Harare. The Investment Plan shall provide all the relevant information needed to understand the process and methodology used to arrive at the proposed investments. (The plan will capture the main features of, and may refer to, the individual investment plans for Harare and Chitungwiza prepared separately for Zimfund project.) The findings of the facility assessments and the recommendations for addressing the capacity deficits shall be clearly elaborated in these reports. The Investment Plan shall comply with international state of the art standards. They shall comprise but not be limited to: (i) Scope and objectives; (ii) Characteristics of the project area; (iii) Demographic profile and macroeconomic outlook; (iv) Institutional and organisational structure of the Municipalities; (v) Existing water supply and sewerage situation including O&M procedures; (vi) Water demand and wastewater flow projections; (vii) Strategic plan for future water supply and sewerage systems; (viii) Conceptual design of proposed water supply and sewerage measures; (ix) Future management and operating requirements; (x) Investment and operating cost estimates and dynamic unit cost assessment for alternatives (if any); (xi) Elaboration of a prioritized, staged implementation concept; (xii) Financial analysis comprising base, best and worst case sensitivity analyses, cash flow projections taking into account willingness and affordability to pay; (xiii) Environmental Management framework; and (xiv) Risk assessment. 38. These reports shall be issued first in draft form Six (6) months after official commencement of services. The client and other stakeholders will be allowed Eight (8) weeks to review the documents and issue comments. During the 8 weeks allocated 8 for review, the Consultant shall organise a stakeholder workshops to present the investment plan. The stakeholder workshops shall be completed within 4 weeks of submission of the draft Investment Plan Reports. The final versions shall then be issued two (2) weeks after receipt of the consolidated comments. General 39. The draft version of all reports shall be submitted in 6 hard copies, including electronic pdf, MS word or MS excel (MS Office 2007 compatible). The final version of all reports shall be submitted in 6 hard copies, including electronic pdf, MS word or MS excel (MS Office 2007 compatible), all in the English language. 10 Assignment management and administration The Task Team Leader (TTL) for the assignment is Michael Webster, Sr. Water and Sanitation Specialist, based in Harare, Zimbabwe (mwebster@worldbank.org). All reporting and other contractual obligations must be routed through the TTL. Day-to-day oversight of the assignment will be done by Rolfe Eberhard, Consultant to the World Bank. The Project will be guided by a Steering Committee set-up for the Greater Harare Water and Sanitation Strategic Plan that will meet at least twice, once at Inception Stage and once at draft report stage. 9 Annexure 1: Summary scope of services Zimfund investment plans for City of Harare and Chitungwisa 1. The Consultant shall collect all available data, reports, existing drawings, plans and maps related to the project . The recent UNICEF projects and the rapid assessment projects generated some useful reports that can be used for the feasibility study. Hard copy network layouts are also available in some towns. 2. The consultant shall set up GIS/CAD based planning system consisting relevant spatial planning data layers such as land use, topographical features, water and wastewater facilities, population distribution etc . This GIS/CAD system shall be setup on the Consultants’ own platform. The GIS/CAD data shall be properly geo-referenced and in appropriate formats so that it is easily transferable to a Utility GIS system that will be set up by the service providers later. 3. The Consultant shall prepare, in consultation with the relevant Line Ministries, Planning Criteria for developing the investment plans. 4. Medium and long term water requirements and wastewater flows shall be determined on the basis of the municipality developed land use Master Plans, which outline the development trends and population projections of the towns. Most of the project towns have land use master plans in place. Where these documents are not available, the Consultant shall make reasonable assumptions in consultation with the town/city authorities. Census data from the government statistics office may also be used. 5. The Consultant shall assess the condition and capacity of the existing infrastructure. 6. The water distribution network condition assessment will be done using sampling methods aimed at establishing parameter relationships that can be used to extrapolate network rehabilitation investment requirements. 7. Similar to the water distribution network, the condition of the sewer network shall be investigated using a sampling approach . 8. The Consultant shall propose medium and long term investment measures based on the projected water and wastewater service requirements and the assessed capacities of the existing facilities. Where new water sources and treatment facilities are to be considered, the Consultant shall develop and evaluate alternative solutions before selecting the most technically and financially feasible option. It is important that each project component is selected on the basis a rational prioritization, with reference to its financial and economic costs, measured against its benefits or effectiveness (economic, financial, social and equity). 9. Consultant shall prepare cost estimates of the proposed investment measures. The Consultant shall develop realistic unit costs that take into account the current country/regional market conditions and inflationary expectations. 10. The aim of the financial analysis is to ensure that there will be sufficient funds to cover the expenditure requirements during the life of the facilities and to ensure that the project benefits are greater than the project costs over the life of the investment taking into account the time value of money. The Consultant shall, therefore, carry out a comprehensive financial analysis of the project using an appropriate financial model that captures the expected investment and recurrent expenditure over the project life (until 10 2030). Revenue expectations (tariffs) should be estimated, taking into account the ability and willingness to pay of the target population. 11. The Consultants shall assess the capacity of the councils to provide water and sewerage services effectively within the existing legislative and policy environment. The Consultant shall then make appropriate recommendations for the future institutional arrangements necessary for the sustainability of the investments. 12. The Consultant shall establish a framework for addressing environmental and social constraints that may arise during the implementation and operation of the project. The framework shall conform to the provisions of the National Environmental Policy (1997) and the Environmental Management Act of 2001. 11 Greater Harare Water and Sanitation Strategic Plan Investment Plan Report Greater Harare Water and Sanitation Investment Plan APPENDIX 1.2: COMMENTS TO THE DRAFT REPORT Gauff Ingenieure GREATER HARARE WATER AND SANITATION STRATEGIC PLAN Greater Harare Water & Sanitation Investment Plan – Investment Plan Report Interim comments from the World Bank on the Draft Investment Plan Report and reply from Gauff Comments from the World Bank Reply from Gauff Final remarks/ Response from th th acceptance of Gauff (6 May 2014) (8 May 2014) Consultant’s response th (13 May 2014) by the World Bank Comments Pertaining to Greater Harare 1 Yield of the Kunzwi Dam after taking into account The yield issue is proving to be quite Use the lower figure Agreed. Kunzwi will be upstream commitments is much lower than allowed in the controversial. We suggest that a more provided by Peter Morris developed limited to report. detailed study should be commissioned to taking into account upper 150 ML/day (Yield revise the yield estimates and water catchment commitments. taking into account rights. This could be part of the feasibility Reduce Kunzwi Scheme. upper catchment study prior to the revision of the detailed commitments and designs for the Kunzvi scheme done in demand requirements 1997. until 2030) in two stages: 100ML/day in 2022 (construction in 2019 to 2021) and additional 50ML/day in 2028 (construction in 2026 and 2027 – WTP extension and part of pumping stations only). 2 Yield of Seke/Harava Dams is insufficient to support The resource zoning will be revised. ok No comment. Chitungwiza which will need to continue to receive water from Chitungwiza will continue to receive water Harare Water. from both Prince Edwards and Morton Jaffray WTW 3 Urban sewer boundary. Parts of the report describe See response to comment 4 below. The Ok No comment. the concept of an urban boundary with water kiosks and on- report will be revised to explicitly describe site sanitation outside the boundary, but the concept is not the urban boundary and related well represented in most of the report and in the investment investment proposals. A more detailed proposals. See point 4 below. determination of the suitable areas for sewer reticulation should be carried out at feasibility study/detailed design stage 4 Extent of sewer network. In light of affordability Agreed. We will review the sewerage Delay sewer network for Epworth will be considerations, the proposed extent of the sewer network is boundaries proposed for all towns and Epworth, phase in line with considered with optimistic. The affordable investment scenario needs to recommend on a reduced extent. late development of south improved water incorporate proposed for a reduced extent of the sewer We are proposing extending the network trunk sewer and extend services (kiosks and network. In particular, the proposed full provision of a sewer from 2020 to 2030 to service 50% of the network to only 50% at end partly yard taps) to network in Epworth is not realistic. current informal settlement by 2030 rather of period ensure safe drinking than to provide blanket coverage, such water and on-site that by 2030 there will still be 43% of the sanitation. Approx. overall Epworth population without cover. 50% of the population Whether this is realistic or not is difficult will be connected to a 1|P a g e GREATER HARARE WATER AND SANITATION STRATEGIC PLAN Greater Harare Water & Sanitation Investment Plan – Investment Plan Report Interim comments from the World Bank on the Draft Investment Plan Report and reply from Gauff Comments from the World Bank Reply from Gauff Final remarks/ Response from th th acceptance of Gauff (6 May 2014) (8 May 2014) Consultant’s response th (13 May 2014) by the World Bank for us to judge. sewer network in 2028 when the Harare South WWTP is constructed (construction period in 2026 and 2027). 5 Water demand management. A strategic approach We have made a provision in the Communicate the need This will be presented to bulk metering, zoning and district metering, prioritised investment plan for more detailed and a strategic approach in the respective replacement of old GMS distribution mains; more extensive investigations needed to devise an more clearly, including in chapters in more detail. use of pressure reducing valves to manage pressures; appropriate NRW reduction action plan. the exec summary. census of customer service points (including GPS An outline of the required activities is positioning) etc. needs to be more explicitly developed and presented in Chapter 7. These activities emphasized in the description of the investment measures. should be part of the feasibility study/final design. 6 Kiosks, flow-limiters and on-site sanitation. An Agreed. We will develop a more detailed Ok No comment. explicit strategy and more detailed investment proposals for strategy covering the sewerage water kiosks, flow-limiting devices, support for on-site boundaries, water kiosks, flow limiting sanitation need to be elaborated. In light of affordability devices and onsite sanitation support. considerations, these proposals may need to be much more extensive (including inside the urban sewer boundary, or outside a much reduced urban sewer boundary) than invisaged in the current draft investment plan (see separate comments on the financial section). 7 Water demand management must include physical Agreed. See also response to comment 5 Ok No comment. checks of properties and water meters as the billing data above base is deficient, particularly in Harare and Chitungwiza. 8 Sequencing of investments: In the investment These are reticulation extensions in new Please make this clearer in Agreed. proposals, many Priority 3 investments are shown before the development areas which may be done the report. Priority 1 investments. annually by private developers or the local authorities. Harare Water is currently carrying out these works in some parts of Harare South. 9 Spellings of names must be checked as there are Noted. The final report will be corrected ok No comment. multiple errors. Town Specific Comments 10 In Harare the investment proposals must include the Noted. ok No comment. smaller water booster stations. 2|P a g e GREATER HARARE WATER AND SANITATION STRATEGIC PLAN Greater Harare Water & Sanitation Investment Plan – Investment Plan Report Interim comments from the World Bank on the Draft Investment Plan Report and reply from Gauff Comments from the World Bank Reply from Gauff Final remarks/ Response from th th acceptance of Gauff (6 May 2014) (8 May 2014) Consultant’s response th (13 May 2014) by the World Bank 11 In Harare, data on network pipe materials is Noted. We’ll check again with Harare ok No comment. incorrect and may affect replacement prioritisation and costs. Water who provided the data. 13 In Norton, early investments must include Agreed. This is supported by modeling. ok No comment. duplication of the pipeline from Morton Jaffray and pipelines We will review the timing of the to reinforce supply to the western areas. investments in various pipelines to ensure these are correctly prioritised. 14 In Ruwa it must be emphasised that the catchment Noted. The catchment of Green Sykes ok No comment. for Green Sykes Dam must be sterilised against development Dam will be marked on the map and text to prevent pollution of this source. The watershed protection regarding protecting the catchment will area should be shown on the layouts. also be added in the report. 15 In Ruwa, it will take several years before there is an Understood. We will include investment ok No comment. alternative to the existing sewage pump stations and measures for rehabilitation of the main treatment ponds on Adelaide. There is a need to rehabilitate pump station and interim rehabilitation of these to prevent environmental pollution until an alternative is the ponds. We will report on likely pond available. effluent quality and measures that could be taken to improve this. 16 In Ruwa, much of the distribution network is young We will review the age spread of network ok No comment. (10 years and less) and should not need replacement in near pipes in Ruwa and the proposed level of to medium term future. investment. 17 In Epworth, Ventersburg reservoir provides Our modeling shows that even with pipe ok No comment. adequate static head for all except a small area along the velocities near minimum there is northern boundary of Epworth. Pressure reducing valves will insufficient pressure in Epworth without a be needed for the lower lying areas. There is no need for booster station in the long term. pressure boosting (that is proposed). There is no high ground We agree that no additional storage to locate more storage within Epworth and the solution will be should be established in Epworth. to ensure adequate supply from Ventersburg. 18 In Epworth, review proposal for full coverage for This is much the same as for no 4. Is the See above. No comment. sewer network. The assumption of conversion of informal to suggestion that that there should be no fully serviced HD after 2020 is optimistic. Epworth serves the further upgrading of informal to HD poorest segment of Harare’s population and putting in water settlement? If so, this would be contrary to connections and sewer connections to each house is likely to the stated objectives and intentions of the make it unaffordable. I think it would be better to ensure safe Local Board. Is 50% unrealistic? If so water supply by installing yard taps with flow limiters or stand what is a realistic %? pipes/kiosks, and supporting a program to improve on-site We will review this but our feeling of sanitation. Epworth is that whilst it is poor and somewhat unplanned there are many much poorer and poorer planned areas in African cities which have successfully 3|P a g e GREATER HARARE WATER AND SANITATION STRATEGIC PLAN Greater Harare Water & Sanitation Investment Plan – Investment Plan Report Interim comments from the World Bank on the Draft Investment Plan Report and reply from Gauff Comments from the World Bank Reply from Gauff Final remarks/ Response from th th acceptance of Gauff (6 May 2014) (8 May 2014) Consultant’s response th (13 May 2014) by the World Bank implemented household sewer connections. Selected Detailed Comments Page 3-17. I do not see why the Nyatsime Farms cannot Correct, the Nyatsime Farms can ok No comment. accommodate 105,420 people in HD stands. Land has been accommodate way more than 105,420 identified to accommodate35,889 stands which equates to people in HD stands. The figure of 2.9 people per stand. 105,240 relates to the initial phase of development on Nyatsime which is considered likely to be achieved by 2030. Hence the statement on pages 3-17 to 3- 18 “If necessary, the balance (for HD) could be accommodated either by reallocation of some of the proposed Nyatsime LD and MD housing (within the initial phases of development to 2030) to HD, or else through continued expansion of HD housing to the south within Nyatsime.” Page 5-19. Chitungwiza modified conventional plant. Please We have confirmed with Chitungwiza ok No comment. check the stated capacity of 35 Ml/day, my information is that Municipality that the capacity of the it is 18 Ml/day. Assuming that this is the case then there is modified conventional treatment works is capacity only in the medium term unless as is suggested in 35 ML/day. the report, areas that need pumping to discharge to the The proposal is to decommission the Zengeza Works are drained to the Harare South STW. pumps in St Mary’s once the Harare South STW is commissioned. Ruwa STW. Google image indicates that development has Information from Ruwa Council was that Recommend use of ponds Agreed. We are not taken place over the Adelaide Ponds although part of Epworth have asked them to vacate the for Ruwa ponds as proposing ponds as a Sunway City is close to the ponds. Current reason for the ponds to allow for expansion of Sunway medium term measure, this short-term solution for ponds not being used is failure of the pumps. city into this area. We suggest and will delays south trunk sewer. Ruwa and delaying the indicate in the report that the two councils construction of the should formally agree a need/ schedule Harare South Trunk for the decommissioning of the ponds, Sewer until 2029 probably in parallel to the implementation (construction in 2026 to of ‘long term’ investments. 2028). Is there a justification for a dedicated pump station to supply Wording will be checked as it is not ok No comment. Norton? Morton Jaffray can already pump more than the intended to provide a dedicated pump 4|P a g e GREATER HARARE WATER AND SANITATION STRATEGIC PLAN Greater Harare Water & Sanitation Investment Plan – Investment Plan Report Interim comments from the World Bank on the Draft Investment Plan Report and reply from Gauff Comments from the World Bank Reply from Gauff Final remarks/ Response from th th acceptance of Gauff (6 May 2014) (8 May 2014) Consultant’s response th (13 May 2014) by the World Bank available yield and all that it needed is to increase the station, just a dedicated pump within the pipeline capacity. existing station. Modelling showed a different head requirement for pumping to Norton. Marlborough Sewage Pumping Station. Please confirm that Marlborough SPS: the ponds are adjacent ok No comment. the New Marlborough SPS is at the treatment ponds. My to the PS. Originally these were surface understanding is that all sewage arriving at the ponds has to pumps but have been converted to a be pumped because the sewer is lower than the ponds and submersible system with 2 pumps in each that the pumps are not working. sump The sewage has to be pumped to the ponds. All 4 pumps were not operational. New Marlborough SPS: the ponds are about 1.0 km from the PS. There are 2 submersible pumps and both were operational at the time of our visit. The sewage has to be pumped to the ponds. The investment measures for Epworth must take into We will provide more detail for a plan for ok No comment. consideration that the population depends on unsafe sources water kiosks and flow limiting devices to such as shallow wells and surface water. It is also a very be rolled out urgently in Epworth. poor population and it will be difficult for the people to sustain the investment needed to provide fully reticulated water supply. Harare must commit to supply more water to Epworth and immediate measures are needed to provide kiosks. 7.3.4 Epworth Sewerage. Report recommends rehabilitation Agreed. We will develop this activity. ok No comment. of the existing network. This cannot be done until there is a connection to a treatment works, whether at Lyndhurst or Harare South. In the mean time, support must be provided to ensure safe onsite sanitation in Epworth. It is incorrect that Nora scheme competes with Kunzvi for the We will review this. Confusion arose as ok No comment. same raw water source. The confluence of the Nora River the Nora Weir yields are included in the with the Nyagui is downstream of Kunzwi Dam. In discussion yield for Kunzvi (ZINWA Yield Report for of further expansion of the works take in to consideration that Kunzvi Dam). We will therefore review the yield of Nora Dam is 27 Ml/day average equates to 34 both the figures for Nora and Kunzvi to Ml/day peak day. Transfer system can move 21 Ml/day. ensure no water has been double Pumping from Nora to Ruwa will take less energy than accounted. pumping from Kunzwi. Nora Dam is closer than Kunzwi, is at a higher altitude, the highest point to which the water has to be lifted is lower. Thus the pumping head from Nora to Ruwa 5|P a g e GREATER HARARE WATER AND SANITATION STRATEGIC PLAN Greater Harare Water & Sanitation Investment Plan – Investment Plan Report Interim comments from the World Bank on the Draft Investment Plan Report and reply from Gauff Comments from the World Bank Reply from Gauff Final remarks/ Response from th th acceptance of Gauff (6 May 2014) (8 May 2014) Consultant’s response th (13 May 2014) by the World Bank is less than Kunzwi to Donnybrook to Nora. Unless there is a good reason, Nora system should be developed to its full capacity. Table 7-52 Accompanying Measures. It is known that there is We have made a provision for a database ok No comment. a large number of consumers that are not on the billing data cleanup exercise which will include base. These include co-operative housing areas along the mapping of all customers. southern boundary of Harare. A recent exercise by Harare Water in Budiriro revealed that only half of the occupied No comment.stands had meters and were on the data base. A subsequent exercise in Belvedere showed a similar pattern. Chitungwiza Town Engineer considers that there are large numbers of consumers who are not on the data base and who are not billed. The accompanying measures must include an exercise by meter readers equipped with GPS to log every meter read. Transfer of this data to recent satellite imagery will show consumers that are not registered. 6|P a g e GREATER HARARE WATER AND SANITATION STRATEGIC PLAN Greater Harare Water & Sanitation Investment Plan – Investment Plan Report Comments from ZINWA on the Draft Investment Plan Report and reply from Gauff Comments from ZINWA Reply from Gauff Final remarks/ acceptance th th of Consultant’s response (4 June 2014) (4 June 2014) by the World Bank The issue of Water demand management must be relooked at. They have The conclusions made on replacement of valves, Agreed. recommended bulk replacement of valves, meters etc.; I think some of the service connections and meters are based on items can be reusable within the reticulation system. statistical results from pilot area investigations. More refined localized investigations will have to be conducted before determining which network elements will be replaced. The Investment Plan makes provisions for such investigations. The PR issues regarding Water Demand Management must also come out Item F.3 (ii), in the investment plan, under the Agreed. Clearer and more emphatic since acceptance is crucial for it to be broad category of “Accompanying Measures” is successful. Physical operation may improve but unless the users the provision for customer awareness campaigns understand and accept WDM this can end up being a disaster, can that will cover a broad range of issues, including encourage water hording and contamination etc. WDM The first stage can be integrated as Harare, Chitungwiza, Norton, Epworth The issue of institutional arrangements has been Agreed. and Ruwa in one basket but it’s important to look at segment affairs so that addressed by the World Bank under the broader there is buy-in. The satellite towns have their local administrative structures strategic plan development. and I think long term development must be in separate council areas with encouragement for cross trading and promotion of basin transfers. This will also bring competition among the Authorities Ditto above Agreed. Operation structures must distinguish bulk supply points and the secondary This is a detailed operational issue that is outside Operational issue. distribution network. the scope of this investment plan (not sure I understand the relevance of the comment actually!!). 1|P a g e GREATER HARARE WATER AND SANITATION STRATEGIC PLAN Greater Harare Water & Sanitation Investment Plan – Investment Plan Report Interim comments from the World Bank on the financial analysis and reply from Gauff Comments from the World Bank Reply from Gauff Final remarks/ acceptance th th of Consultant’s response (25 April 2014) (30 April 2014) by the World Bank Main Comment – Financial Analysis and Investment Plan While a lot of good work that has been undertaken on this project, The model and the assumptions will be reviewed Thank you. particularly the work to develop the investment plan (what investments are in light of your observations as explained in the needed, where they are needed and what they are likely to cost), the report detailed comments and responses below falls substantively short in two very important respects: • The report does not present a realistic and plausible financial scenario for a utility providing water and sanitation to both invest in service improvements and to sustain these improvements over time. Instead, the report presents an investment plan that the financial analysis then shows be unaffordable. • The report does not present an affordable investment plan. Both of these aspects (a realistic financial scenario for a financially viable utility to improve and maintain services, and an affordable investment plan) were key parts of the brief….. Therefore, paragraph 11-8 of the report, the main concluding paragraph of the financial analysis, and all of the financial analysis leading to this conclusion, cannot be accepted. We therefore request that you: (1) Redo and substantially improve the financial analysis (both the modelling and the reporting of the analysis) to develop a realistic and financially affordable and sustainable scenario for the improved and sustainable provision of water services to Greater Harare. This analysis should take into account the above points as well as the detailed comments below. (2) Present an alternative investment plan that fits within the investment resource envelope shown to be realistic by the financial model. (The full investment plan can also be kept as a scenario). 2 Detailed comments Use of 0 for chapter (sub-section and page) numbering for Executive It’s just a unique presentation style. We can Not necessary Summary is unusual (or is it just my own software?). change it if you want us to. Par 0.4.1 Need to also state that actual functioning capacity is much less. Noted. Par 0.4.3 Change sentence with “non-existent”, suggest “for all practical Noted purposes, supply is negligible” All Paragraphs in 0.11 need to be completely rewritten. The analysis and The whole chapter 11 and the associated summary is not adequate. See comments on the financial analysis summary will be revised in light of your comments 1|P a g e GREATER HARARE WATER AND SANITATION STRATEGIC PLAN Greater Harare Water & Sanitation Investment Plan – Investment Plan Report Interim comments from the World Bank on the financial analysis and reply from Gauff Comments from the World Bank Reply from Gauff Final remarks/ acceptance th th of Consultant’s response (25 April 2014) (30 April 2014) by the World Bank and suggestions Is Figure 8-1 up to date? (There have been recent changes in structure.) Noted. As you are aware, we struggled to get data Understood Provide a date for the information “as at *** 2014.” from the City of Harare and Harare Water, so the data we have may not be up-to-date Par 8.3.1: It is not correct to say that Harare Water’s finances are ring- Noted. The correction will be made fenced. Figure 8-2: Has a separate customer management position been created? Data from Harare Water is scanty Understood Is the post filled? A ratio of 10 staff per 1000 connections is high. Need to calculate as staff Noted. per 1000 water and sewer connections. Par 8.3.1 Best practice is much lower than this (4 or even much less than Noted this), though in developing countries should expect it to be below 8 and preferable below 6 for the scale of operations of Harare Water (a large city). Par 8.3.1 You have provided the full staff establishment (positions and Noted. We’ll provide more commentary on the Noted grades) in Figure 8-2 and Table 8-4. Surely it is possible to make a assessment of the existing structures. The whole comment on the appropriateness of this structure? – Some questions to chapter will be restructured. Detailed tables and ask and answer include: Are there any clear imbalances? Too many people charts will go to the appendix so that only succinct at low grade? An ‘intermediate/supervisory layer that is understaffed? information remains in the main report. Missing sections? Under-staffed/over-staffed sections? Too many managers? Location and reporting of the meter readers not optimal? Figure 8-3 text boxes are not completed Noted. This will be corrected Table 9-1. Page 9-4. Sewerage critical interventions – environmental. Need Noted to make link to water restoration progress. No point in addressing overcapacity lines if this is due to major water leakages rather than managed consumptions. Par 10.1 1st bullet. Cannot assume World Bank finance will be available. Noted. This will be corrected Can assume some form of concessionary finance is available. (I think this will be necessary, though it is not clear where it will come from.) Par 10.2. 2nd bullet. Evolution towards an independent utility is not Noted. Chapter 8 will be revised to include a brief Noted. Please also attach a detailed in Section 8 as indicated in this paragraph. description of the proposed progression from the budget to the institutional current arrangement to the autonomous strengthen and reform metropolitan utility. program. 2|P a g e GREATER HARARE WATER AND SANITATION STRATEGIC PLAN Greater Harare Water & Sanitation Investment Plan – Investment Plan Report Interim comments from the World Bank on the financial analysis and reply from Gauff Comments from the World Bank Reply from Gauff Final remarks/ acceptance th th of Consultant’s response (25 April 2014) (30 April 2014) by the World Bank Par 10.3 Page 10-2 3rd par. Long-term project implementation years are Noted incorrect. Figure 10-1 Spelling mistake – institutional reforms, consistency of capitals Noted Par 11.2 last paragraph is not clear. Please clarify explanation. The text will be revised. The point we are making Okay is that the current cost of bulk water production determined by the model is compared with current sales price of bulk water to the satellite towns to determine whether the satellite local authorities are paying the cost covering price or not. Under the clustered utility scenario the tariff will reflect the appropriate cost of proving the bulk water to the satellite towns. Table 11.3 There appear to be mistakes in the table for the unit costs (eg Noted. Will be corrected. Ruwa power cost) Par 11.3 Page 11-5 Production losses estimate of 5% is probably too We think that production losses of 5% is realistic, Noted, okay. optimistic, at least in the near term. especially that the production facilities are currently being rehabilitated and that the raw water abstraction facilities are close to treatment facilities Page 11-5. Why do you assume that Harare Water should subsidise the We are not saying that Harare Water should Okay, please make text clearer other towns? subsidize the other towns. What we are saying is to reflect this. that Harare water is currently selling bulk water to the satellite towns at a tariff that is below cost (essentially subsidizing them). But the situation should change under a unitary utility company. Table 11-4. Are these full operating and maintenance costs for the bulk Yes, they are full operating and maintenance Noted, okay. water and bulk sewer systems only? Do they include depreciation? Are costs only and do not include depreciation and finance costs excluded? Would help to include notes to table to state finance costs up to 2019. Thereafter, the costs exactly what is included and excluded from these costs. Are they for the include depreciation and finance costs. purposes of selling bulk water (and treatment services) to the other towns? Noted. Notes will be included in the report to clarify this. Sentence below table 11-4 does not make sense – actual costs have not Note. This comment is related to Table 11-4 only. Okay yet been presented in the report. Page 11-5. Please justify the 60:40 split. I do not think it correct to split the Noted. This will be revised. Okay financing costs in this way, as magnitude of investments in water and sanitation differ and also swing between periods. 3|P a g e GREATER HARARE WATER AND SANITATION STRATEGIC PLAN Greater Harare Water & Sanitation Investment Plan – Investment Plan Report Interim comments from the World Bank on the financial analysis and reply from Gauff Comments from the World Bank Reply from Gauff Final remarks/ acceptance th th of Consultant’s response (25 April 2014) (30 April 2014) by the World Bank Par 11-3 Page 11-6 last paragraph. Statement that cancellation of debt will The cancellation of debt was made on condition In previous discussions, World lead to improved willingness to pay is not necessarily true. Evidence so far that the customers will commit to paying their bills bank specifically requested that does not prove this to be true. Do not agree with last paragraph. Increasing post debt cancellation. The local authorities were a sensitivity analysis (or collection efficiency will require a whole combination of initiatives that advised to sensitize their customers on this before alternative scenario) be should be spelled out in the report. effecting the debt cancellation. We believe that presented where NRW and with debt burden lifted and improved services collection efficiency targets are brought about by the investment and restructuring not achieved. Please can you of the service provider, the customers will be more show the financial impact of willing to pay their bills. these assumed targets not being achieved. Par 11-4 .We requested base year to be 2013 and this was agreed in the Noted. Since we couldn’t get any data from Harare Okay Inception Report. Data is available to June 2013 (FY 2012/13). It would be Water, we will use data from the World Bank and helpful to also include in the analysis prior years (a few years of financial the tariff study. data is available for Harare Water). Table 11-5. The presented data differs substantially from the analysis Noted. The input data has been revised to include Okay. undertaken by the World Bank that was previously shared with you. What data from the World Bank. The financial data we was your source? Does it include depreciation? Does it include provisions used was informally obtained from the Finance for bad debt? Has VAT been excluded from the numbers? What sits inside Manage at Harare Water. We could not verify the very large ‘other expenditure’ category? How could the utility incur whether it was final audited data or draft. So it is expenses that are $40 million in excess of its revenues? Are the revenue safer to use verified data from the World Bank. billings or cash? Specific comments on table: • The data I have shows Revenue for 2012 was $93 million not $64.5 million • The data I have shows total expenses of $84 million (not $105 million) – major difference appears to be the “other expenses” item of $19million – what is in this? • Chemicals, power, salaries & maintenance numbers appear to be in right ball park. Page 11-11 1st par. Is this full cost including finance costs? If so, See response to similar comment above. Okay. Please clarify in text. contradicts earlier statement. Table 11-10. It is not stated if these numbers are real (constant $) or All the costs including investment costs have been Okay. nominal (increasing with inflation). If the values are nominal, they should be converted back to real. converted back to real – it is very hard to make any sense of nominal projections in the context of inflation. Par 11-6-1: The tariff scenario presented is unrealistic. Not only is this Note. This will be revised. Okay clearly unaffordable, it also shows a highly profitable situation towards the end of the period, which is unlikely. Comment on financial statements: 4|P a g e GREATER HARARE WATER AND SANITATION STRATEGIC PLAN Greater Harare Water & Sanitation Investment Plan – Investment Plan Report Interim comments from the World Bank on the financial analysis and reply from Gauff Comments from the World Bank Reply from Gauff Final remarks/ acceptance th th of Consultant’s response (25 April 2014) (30 April 2014) by the World Bank • Provision for bad debts should be explicitly included and shown • A balance sheet should be included Noted. This has been included • Cash flow should also show investments made, and source of Noted. We have now included a simplified balance investments (grants/loans/own resources) sheet. There should be an additional table that includes important other data such Noted. This has been included as: • volume produced • volume sold • average water tariff Noted. Most of these parameters are presented in • average wastewater tariff the detailed sheets in the model workbook. We’ll present all the relevant tables in the Appendix. • annual investments (by main category of investment – bulk water, other water, bulk wastewater, other wastewater, institutional strengthening) • Outstanding debt • Key performance ratios should be shown in a table over time: We don’t have data on this o NRW o Collection efficiency o Gross margin o Staff productivity o Number of water connections Noted. o Water sold per connection o People per connection o Return on assets o Debt-equity ratio It would be help to make the other key assumptions directly associated with Noted this project more explicit by being included on table, or in an closely associated accompanying table. Some Important assumptions to foreground are interest rate used and inflation rate. Par 11-8. The brief was to develop an affordable investment plan to We have revised our approach. We’ll create model Okay improve water and sanitation services in Greater Harare. The analysis scenarios guided by the prioritization principles shows that the proposed investment plan is not affordable. The World outlined in Chapter 9. The prioritization levels will Bank communicated this danger from the very beginning of the project and be modeled separately as scenarios. The base asked you to be creative in looking for low cost and incremental solutions to scenario will include all identified investment improving the water and sanitation situation in Harare. The substantive measures. Scenario 1 will include investment brief of the financial analysis and investment plan has not been met. measures under priority 1 while scenario 2 will include priority 1 & 2 investment measures. 5|P a g e GREATER HARARE WATER AND SANITATION STRATEGIC PLAN Greater Harare Water & Sanitation Investment Plan – Investment Plan Report Interim comments from the World Bank on the financial analysis and reply from Gauff Comments from the World Bank Reply from Gauff Final remarks/ acceptance th th of Consultant’s response (25 April 2014) (30 April 2014) by the World Bank Need to include the risks of: Noted. Will be included  Financial sustainability of the service provider / utility 3 Comments on the Harare Financial model 1. It looks like the model is a nominal model (though this is not All cost items will be presented in real terms, Okay. But the modeling needs explicitly stated), using an annual inflation adjustment factor of 2% per including investment costs to be done in nominal first, and annum for key cost items (staff, fuel etc). The financial presentation of the the presentation of the “final” financial statements (income statement, cash flow and balance sheet) financial statements needs to should be presented in real (constant 2013 dollars). be in real (converted back to real at the end). Easiest way to do this is have a full nominal model, and add a final ‘duplicate’ financial statements made where all values converted back to real. The reasons for this is that debt is incurred as a nominal amount and the real value of the debt erodes over time due to inflation. (The Harare model is now modeled with zero inflation but but 2% annual increase in unit staff costs.) 2. There is a very large discrepancy between World Bank (ball park) The valuation of existing assets is highly Agreed. We can discuss and estimate of replacement cost of assets of $1.8 billion compared to Gauff subjective. It’s possible that our figure is too high agree on what is appropriate. estimate of $5.7 billion. The WB figure is probably too low (more than $10 and your figure is too low. We could agree to use Please include Peter Morris in 000 per water and sewer connection) We are of the view that the Gauff a figure in between. What do you think? discussion. estimate (more than $32 000 per water and sewer connection) is too high. (Existing Assets sheet) 3. The calculation of interest is incorrect, it does not take into Noted. This will be corrected Revision in model look okay account the repayment of principle. So interest in the later years is much too high. You need to model a loan balance and calculate interest on the loan balance. (Costs sheet, line 15) 6|P a g e GREATER HARARE WATER AND SANITATION STRATEGIC PLAN Greater Harare Water & Sanitation Investment Plan – Investment Plan Report Interim comments from the World Bank on the financial analysis and reply from Gauff Comments from the World Bank Reply from Gauff Final remarks/ acceptance th th of Consultant’s response (25 April 2014) (30 April 2014) by the World Bank 4. The model assumes all debt is at 5%. In practice, the debt is likely Noted. We have added a number of possible Agreed. Need to make an to come from two sources, concessionary grant finance and ‘normal’ grant sources of finance, including own financing for estimate of what is most likely finance. The financial scenario should incorporate a portion of investments periodic replacement of water meters and private or plausible. For discussion. coming from concessionary finance (grants or low interest loans) and also financing for service extensions in new some from own resources, particularly after the first five years. (Costs development areas (private developers could sheet line 15) potentially be forced to finance service extensions in new housing estates). It is difficult, however, to determine with reasonable accuracy at this stage the proportions of the different financing sources 5. It is unrealistic to impose a depreciation charge of 30 million from Noted. In fact we have removed the depreciation Okay, this is probably realistic. 2013. This charge should be introduced gradually over a period of 5 years charge on existing assets all together. The freed Not shown in the Harare Model (or more). The resources raised to meet this cost should be available as up resources will be used for periodic replacement r1 provided. “own resources” spending, and this should be subtracted from the of service meters. grant/loan financing amount. (Costs sheet, lines 17 and 18) 6. It would be clearer to have a separate financing page which deals Noted. with the financing assumptions and shows investments, net debt, interest costs and depreciation calculations 7. Operating cost calculations. While I understand that costs have Noted. The calculated operating costs will be Not shown in the Harare Model been developed from ‘first principles’, these costs need to be introduced harmonize with the current spend and ramped r1 provided. over time from the existing base. So, for example, maintenance costs over time as advised. should be ramped up over five years from the existing $10 million per annum to the amount calculated as necessary ($25 million and growing). Fin Analysis sheet, line 12 8. I would prefer for the Income Statement to include a line for Noted. Need to prvide for the full provisions for bad debt that matches the revenue not collected. This makes amount not collected, not 25% the cost of non-collection explicit. as shown in the Harare Model r1 provided 9. The cash flow needs to show all of the investment and financing Noted. Not shown in the Harare Model activities. r1 provided. 10. The financial model does not have a balance sheet. This is an Noted. A simplified balance sheet has been The balance sheet is not important view on the sustainability of the utility and a simplified balance created. correct. The outstanding debt sheet should be included. does not correspond to that shown in the cost sheet. The balance sheet does not appear to reflect the affect of net cash flows correctly. The Balance sheet references external sheets whereas it should get all 7|P a g e GREATER HARARE WATER AND SANITATION STRATEGIC PLAN Greater Harare Water & Sanitation Investment Plan – Investment Plan Report Interim comments from the World Bank on the financial analysis and reply from Gauff Comments from the World Bank Reply from Gauff Final remarks/ acceptance th th of Consultant’s response (25 April 2014) (30 April 2014) by the World Bank of its data from the model itself. 11. The calculated cost recovery tariff is a nominal tariff. When Noted. expressed in real terms (revenue sheet, line 41), it shows the real tariff moves from $0.59 to $1.02 by 2017 and then gradually increases to $1.20 in 2030. This is not that unreasonable. 12. The financial analysis shows large negative cash flows in the early Noted. This will be addressed in the revised model Not shown in the Harare Model years, but these are not ‘real’ deficits as in practice actual costs will be (or r1 provided. should be) phased in, so the early cash flows will look much better in practice. Also, there are large cash flow surpluses in the later years that suggest the tariff in this period could be reduced. In addition. The interest calculation is incorrect. 13. The analysis needs to be redone taking the above comments into Agreed. account. 14. A scenario also needs to be developed that shows both a realistic Noted. revenue profile and related affordable investment profile. The investment plan then needs to be adjusted to fit this affordable investment profile. 15. General presentation of the model can be improved to make Agreed. The model has been substantially Some improvements noted. assumptions and linkages more explicit so it is easier for a third party to revised. follow. 16. There is no annotating the model so it is no clear what the specific Noted Still no labeling of what model scenario is that is show – the report presents 2 model runs. scenario is being modeled in the Harare Model r1 provided 4 Comments on the Greater Harare Financial model In the two models provided (Harare and Greater Harare), you have This will change with the revised assumptions assumed that Greater Harare has personnel costs that are 25% greater than for Harare only – this seems too high. Also the revenues (actual cash collected) for Greater Harare are only 4% higher on average compared to Harare only (this seems too low). So obviously, in terms of these assumptions, moving to a Greater Harare utility is a non-starter for the City of Harare as costs increase more than the revenues. This does not present a convincing case for a Greater Harare utility. Please can you re-examine your assumptions. 8|P a g e Greater Harare Water and Sanitation Strategic Plan Investment Plan Report Greater Harare Water and Sanitation Investment Plan APPENDIX 1.3: MINUTES OF STAKEHOLDER WORKSHOP Gauff Ingenieure Greater Harare Water and Sanitation Investment Plan Minutes URGENT W ATER SUPPLY AND S ANITATION REHABILITATION PROJECT GREATER H ARARE WATER AND SANITATION STRATEGIC PLAN JOINT STAKEHOLDER WORKSHOP TO DISCUSS THE GREATER H ARARE WATER AND SANITATION INVESTMENT PLAN Minutes Date & Time 28th May 2014, 9:00h – 13:00h Venue Harare, World Bank Offices Meeting attended by List appended (pdf) Proceedings • Introductory remarks by the World Bank and self-introduction of participants • Introductory remarks by the African Development Bank • Presentation by Gauff on the draft Investment Plan Report and discussions on matters arising • Policy note briefing presentation by the World Bank and discussions on matters arising Notes & Key The need for institutional reforms: Given the poor performance of substantive issues the service providers currently – particularly Harare Water – it was unanimously acknowledged that institutional reforms are necessary and should begin immediately alongside implementation of the proposed investment measures. Muda Dam: Chitungwiza municipality expressed concern over the exclusion of the Muda Dam scheme from the investments measures. They contend that the option of having a dedicated source and production facilities for Chitungwiza such as the Muda Dam scheme should not be discounted. The consultant’s response was that the Muda Dam scheme can still be considered for the future beyond the current planning horizon. The construction of the Kunzvi scheme in two phases within the planning horizon of this study will provide sufficient water for Harare and the satellite towns. The Muda Dam scheme can only provide 50 ML/day, which is not sufficient to satisfy demand within the planning horizon. Construction of Kunzvi is more cost effective considering that we can satisfy all demand at one site without having to develop another site within the planning horizon. Gauff Ingenieure Page 1 Greater Harare Water and Sanitation Investment Plan Minutes Norton’s own water production facility: Norton Town Council requested that the consultant considers the option of completing the water treatment plant, allowing the council to operate their own treatment facility and be independent of Harare Water. The consultant’s response was that GIZ already did a cost comparison and concluded that the cost of water from an own source would be high than the cost of bulk water from Harare water. Besides, the low yield of the dam coupled with the heavy pollution of the catchment from which the new treatment facility would be abstracting water weakens the argument of adding more production facilities within the Upper Manyame catchment Adelaide Ponds: the ponds can only be utilised in the very short term. The trunk main to the ponds had been closed by Epworth Local board until a cabinet committee on water and pollution intervened, ordering Epworth to open it and allow Ruwa to discharge sewage. Apparently, the Epworth Local Board has allocated the land around the ponds to the Mabvazuwa housing development. Hence the directive to allow Ruwa to continue using the ponds is only temporary. Interim solution for sewage treatment is to build ponds at Solomio farm and an irrigation scheme for treated effluent at Mara farm. Concerns over joining the Greater Harare utility: Ruwa is concerned that joining the Greater Harare unitary utility will only raise tariffs for them. They are concerned that the cost of producing expensive water from a polluted catchment in Harare will be passed on to them as well since the unitary utility might want to apply a uniform tariff. They are more comfortable staying on their own, but they welcome the institutional reforms that could create a semi- autonomous utility wholly owned by the Ruwa local authority and servicing Ruwa only. Poor performance of Harare Water: The Mayor of the City of Harare attributed the poor performance of Harare Water and the council in general (with regard to the declining cash collection efficiency) to the residents’ negative attitude towards settling of bills for municipal services created by the government directive to cancel all outstanding bills in 2012. He said that people have no incentive to settle bills anymore. Those who were paying before the debt relief feel that they were punished for being good residents and have no incentive to pay their bills anymore. Those whose debt was cancelled think that if they hold out long enough, another benevolent debt cancellation will come from the political establishment. BNR Optimisation: It was suggested that optimization of the BNR plants should be given high priority as more capacity can be realised. The Consultant explained that the rehabilitation measures at the BNR plants include elements of optimization – the details of which will become clearer at the feasibility or final design stage. Gauff Ingenieure Page 2 Greater Harare Water and Sanitation Investment Plan Minutes Investments per capita differences: A concern was raised that the per capita investment costs in Epworth and Chitungwiza were much lower than those for Ruwa and Norton. The Consultant explained that the difference lay in the service levels as well as the dire starting situation, especially in Ewporth. Most of the population in Epworth and Chitungwiza are in either high density suburbs or informal settlements where water usage is by way of public water points or low use in house plumbing. The investments required for low service levels are lower. The investment plan is cognisant of the need to upgrade the service levels in these areas, but this is likely to take time given the poor water supply situation currently obtaining. Initial investments in Epworth and Chitungwiza will be directed towards stabilising the situation and getting more water to the people through a combination of increased bulk water and equitable water distribution techniques such as the use of flow limiters. Harare, 28th May 2014 Gauff Ingenieure Gauff Ingenieure Page 3 Greater Harare Water and Sanitation Strategic Plan Investment Plan Report Greater Harare Water and Sanitation Investment Plan APPENDIX 1.4: BIBLIOGRAPHY Gauff Ingenieure Greater Harare Water and Sanitation Investment Plan Investment Plan Report Appendix 1.4: Bibliography S/N Title Author Date 1 1969 Population Census Report Central Statistical Office, Harare 1970 2 1982 Population Census: Main Demographic Central Statistical Office, Harare 1985 Features of the Population of Zimbabwe 3 Census 1992: Zimbabwe National Report Central Statistical Office, Harare 1994 4 Census 2002: National Report Central Statistical Office, Harare 2004 5 2011 Annual Report City of Harare, Department of Urban 2011 Planning Services 6 Census 2012 Zimbabwe National Statistics Agency 2012 7 Census results: Botswana, Kenya, Malawi, www.geohive.com/cntry/.... July Mozambique, Namibia, Tanzania, Zambia 2013 8 Constitution of Zimbabwe Government of Zimbabwe 2013 9 Crowborough Sewage Treatment Works – Nicholas, O’Dwyer & Partner Consulting 1994 Collection and Disposal of Screenings Engineers 10 Crowborough Sewage Treatment Works – Nicholas, O’Dwyer & Partner Consulting 1993 Catchment Study Preliminary Report Engineers 11 Crowborough Sewage Treatment Works – Nicholas, O’Dwyer & Partner Consulting 1995 Catchment Study Final Report Engineers 12 Crowborough Sewage Treatment Works – Pre- Lamont Consulting Engineers and 1996 qualification Document for Build, Operate and Project Managers Transfer (BOT) Contract 13 Design Approach to Water and Sewerage BCHOD 1982 Problems Relative to Urban (predominantly high density) and Rural Communities in Zimbabwe 14 Design Manual for Water Supply and Government of Tanzania – Ministry of 2009 Wastewater Disposal – Third Edition Water and Irrigation 15 Detailed Technical Assessment Report Lahmeyer GKW Consult & BCHOD 2012 16 Environmental and Social Assessment African Development Bank 2003 Procedures for Public Sector Operations 17 Environmental Impact Assessment Guidelines Ministry of Environment and Tourism 1997 18 Environmental Management (Environmental Government of Zimbabwe 2007 Impact Assessments and Ecosystems Protection) Regulations, 2007 19 Environmental Management (Effluent and Solid Government of Zimbabwe 2007 Waste Disposal) Regulations, 2007 20 Environmental Management Act (Chapter 20:27) Government of Zimbabwe 2007 Gauff Ingenieure Page 1 Greater Harare Water and Sanitation Investment Plan Investment Plan Report 21 Firle Sewage Treatment Works – Civil Works BCHOD 1994 Tender Report 22 Firle Sewage Treatment Works – Final Report BCHOD 1991 on Proposed Extensions 23 Firle Sewage Treatment Works – Preliminary BCHOD 1990 Report on Proposed Extensions 24 Firle sewage Works – Supply, Install and City of Harare 1994 Commission Transformers, Motor Control Centres for Modified Activated Sludge Plant together with Rehabilitation Works to Units 1,2 & 3 25 Firle Sewage Treatment Works – Electrical BCHOD 1993 Works for 33kv Bulk SubStation 26 Future Challenges of Sanitation Services in GIZ 2011 Zimbabwe 27 Greater Harare Water and Sanitation Strategic World Bank 2013 Plan – Working Paper 1: Context, Diagnosis & Approach to Improving Water and Sanitation Services in Greater Harare 28 Greater Harare Water and Sanitation Strategic World Bank 2013 Plan – Working Paper 2: Institutional Options for Improved Water and Sanitation Services in Greater Harare 29 Greater Harare Water and Sanitation Strategic World Bank 2013 Plan – Working Paper 3: Rapid Appraisal of Water and Sewerage Investment Options 30 Greater Harare Water and Sanitation Strategic World Bank 2013 Plan – Working Paper 4: Sanitation in Greater Harare: Current Situation and Future Directions 31 32 Guidelines for the Disposal of Sewage and Ministry of Water Development 1978 Sewage Effluent During Wet Weather 33 Harare Combination Master Plan – Draft Report Harare Combination Master Plan 1989 of Study Preparation Authority Technical Team 34 Harare Sewerage Firle V Project – Electrical BCHOD 1994 Works Tender Documents 35 Harare Sewerage Firle V Project – Mechanical BCHOD 1992 Plant & Equipment Tender Documents 36 37 Harare Sewage Firle V Project – Subsidiary BCHOD 1994 Sewers in the Firle Catchment Area 38 Harare Sewerage Master Plan Phase 3 Report – Safege Consulting Engineers 2003 Gauff Ingenieure Page 2 Greater Harare Water and Sanitation Investment Plan Investment Plan Report Diagnosis and Master Plan Final Report 39 Harare Slum Profiles Report – Edition 1 Dialogue on Shelter and Zimbabwe 2012 Homeless People’s Federation & City of Harare 40 Harare Water Supply Study Stage II – Full GKW Consult/BCHOD/HU 1997 Technical Report 41 42 Hatcliffe Sewage Treatment Works, Feasibility Consulting Engineers CNM & Partners 1993 Report 43 Hatcliffe Sewage Treatment Works – Draft Consulting Engineers CNM & Partners 1993 Mechanical Specifications 44 Hunyani Water Augmentation Scheme, 227 Stewart, Scott and Partners 1984 ml/day Extension to Morton Jaffray Works 45 Institutional Strengthening and Priority GKW Consult 1999 Rehabilitation (ISPR) Project – Definition Study 46 Lower Mukuvisi Outfall Sewer (2) – Supply and BCHOD 1993 Delivery to Site of Large Diameter Steel Sewer Pipes 47 National Environment Policy Ministry of Environment and Tourism 2009 48 National Water Policy Ministry of Water Resources 2013 Management and Development 49 Opportunities to improve water treatment Vitens-Evides 2009 operations in Harare with emphasis on Morton Jaffray Water Treatment Plant 50 PC-Based Simplified Sewer Design University of Leeds 2001 51 Public Health Act (Chapter 15:09) Government of Zimbabwe 2001 52 Public Health (Effluent) Regulations, 1972, Government of Zimbabwe 1972 53 Report on Subsidiary Sewers in the Firle BCHOD 1994 Catchment Area 54 Report on Duplication of Lower Mukuvusi Outfall BCHOD 1992 Sewer 55 Report on The Upper Mukuvusi Outfall Sewer BCHOD 1992 and Subsidiary Sewers in the Firle Catchment 56 The Future of Water in African Cities The World Bank 57 The National Health Strategy for Zimbabwe Ministry of Health and Child Welfare 2009 2009-2013 58 Urban Councils Act (Chapter 29:15) Government of Zimbabwe 2002 59 Urban Sprawl and Development Nexus: UN Habitat 2012 Rethinking Urban Expansion – Policy and Practice 60 Various water and sewerage network layouts Various Gauff Ingenieure Page 3 Greater Harare Water and Sanitation Investment Plan Investment Plan Report and plant as-built drawings 61 Water Act (Chapter 20:24) Government of Zimbabwe 2002 62 Water Pipelines Specifications – First Edition Government of Tanzania – Ministry of 2007 Water and Irrigation 63 World Urbanization Prospects: The 2011 United Nations Department of 2012 Revision Economic and Social Affairs/Population Division 64 Zimbabwe National Water Authority Act Government of Zimbabwe 1998 (Chapter 20:25) 65 Zimbabwe Standard No. 560:1997 (Water for Standards Association of Zimbabwe 1997 Domestic Supplies) 66 Zimbabwe Urban Water Tariff Study Economic Consulting Associates 2011 67 Zimbabwe Water Sector Investment Analysis Economic Consulting Associates 2013 Gauff Ingenieure Page 4 Greater Harare Water and Sanitation Strategic Plan Investment Plan Report Greater Harare Water and Sanitation Investment Plan APPENDIX 3: DEMOGRAPHIC PROFILE AND MACROECONOMIC OUTLOOK Gauff Ingenieure Greater Harare Water and Sanitation Strategic Plan Investment Plan Report Greater Harare Water and Sanitation Investment Plan APPENDIX 3.1: DETAILED DEMOGRAPHIC PROFILE REPORT – HARARE Gauff Ingenieure Greater Harare Water and Sanitation Investment Plan Appendix 3.1 Harare GREATER HARARE WATER AND SANITATION STRATEGIC PLAN GREATER HARARE WATER AND SANITATION INVESTMENT PLAN APPENDIX 3.1: DETAILED DEMOGRAPHIC REPORT HARARE Table of Contents 1 INTRODUCTION............................................................................................................................... 1-2 2 PAST, PRESENT AND FUTURE POPULATIONS ............................................................................ 2-3 2.1 HISTORICAL POPULATION DATA ..................................................................................................... 2-3 2.2 FUTURE POPULATION GROWTH ..................................................................................................... 2-4 2.3 HARARE URBAN FUTURE POPULATION ........................................................................................... 2-6 3 URBAN PLANNING.......................................................................................................................... 3-8 3.1 OVERVIEW .................................................................................................................................. 3-8 3.2 MASTER PLAN ........................................................................................................................... 3-12 3.3 OPPORTUNITIES FOR GROWTH .................................................................................................... 3-12 3.4 FUTURE DEMAND BY HOUSING TYPES .......................................................................................... 3-16 3.5 COMPARISON TO EXPECTED LEVEL OF GROWTH ........................................................................... 3-17 3.6 FUTURE W ARD POPULATIONS ..................................................................................................... 3-18 Index of Tables Table 2-1: Population Data for Greater Harare from 1969 to 2012 (Source: ZIMSTAT) .............................. 2-3 Table 2-2: Inter Census Annual Growth Rates for Greater Harare ............................................................. 2-4 Table 2-3: Comparative Annual Growth Rates for 87 Southern and East African Cities.............................. 2-5 Table 2-4: Projected Annual Growth Rates for six Urban Centres Included in the UWSSRP ...................... 2-5 Table 2-5: Projected Future Annual Growth Rates for Greater Harare ....................................................... 2-6 Table 2-6: Projected Annual Populations for Harare 2012-2030................................................................. 2-7 Table 3-1: Summary of Wards................................................................................................................. 3-11 Table 3-2: Opportunities for Residential Expansion ................................................................................. 3-13 Table 3-3: Estimated Future Populations by Residential Types................................................................ 3-16 Table 3-4: Estimated Population Growth Versus Identified Growth Opportunities..................................... 3-17 Table 3-5: Estimated Future Ward Populations ....................................................................................... 3-19 Table 3-6: Estimated Future Ward Populations by Residential Types ...................................................... 3-21 Index of Figures Figure 2-1: Harare Population Growth from 1969 to 2012 .......................................................................... 2-4 Figure 3-1: Harare Ward Map with Housing Categories ........................................................................... 3-10 Figure 3-2: Harare Future Town Development Map ................................................................................. 3-15 Gauff Ingenieure 1-1 Greater Harare Water and Sanitation Investment Plan Appendix 3.1 Harare 1 INTRODUCTION Harare is the capital city of Zimbabwe. With a 2012 population of 1,708,538 Harare is the largest city in Zimbabwe, accounting for some 38% of the overall urban population and 13% of the total population of the country. Modern development of Harare goes back to its initial establishment as a military fort in late 1890. An initial Board of Management was appointed in 1891. In 1897 Harare achieved municipal status, and in 1935 was declared a city. From 1923 Harare has been the seat of government for Zimbabwe. As such it has seen the genesis of and become the centre for many of the services operated by government. In addition to hosting many national and local institutions, the city has also served as a focus for commercial and industrial activity. Over the last 30 years there has been a clear trend of increasing concentration of population, capital and economic activity in Harare, as has been the case for a number of other capital cities in the region, and this trend seems likely to continue. Harare is contiguous with the surrounding urban areas of Chitungwiza, Epworth and Ruwa. Collectively, these form part of a single urban area and economic entity. Together with Norton, they are also linked in having a common water supply system. The three constituent areas of Harare, Chitungwiza and Epworth collectively comprise Harare Province. Other neighbouring areas include rural parts of Zvimba District (Mashonaland West Province) to the west; Mazowe District (Mashonaland Central Province) to the north; plus Goromonzi District to the east and Seke District to the south (both forming part of Mashonaland East Province, and which also includes Ruwa). Harare is situated on the highveld of Zimbabwe, on the watershed between Manyame catchment to the south and west and Mazowe catchment to the north east. It is important to note that the city is located upstream of its main water supply dams, Lake Chivero and Lake Manyame, on the Manyame catchment, such that all wastewater and accompanying waterborne pollution from the city eventually drains into these supply dams. The city comprises relatively flat terrain intersected by numerous open wetland areas. Known locally as vleis these wetlands areas serve as important catchment areas for Lake Chivero and Lake Manyame. In recent years this function has been increasingly compromised, primarily through ongoing conversion of these key areas to urban development and urban agriculture. Gauff Ingenieure 1-2 Greater Harare Water and Sanitation Investment Plan Appendix 3.1 Harare 2 PAST, PRESENT AND FUTURE POPULATIONS 2.1 Historical Population Data Harare urban has grown in terms of population from 364,390 in 1969, to 1,708,538 people in 2012, a more than four-fold increase over this 43 year period (Table 2-1, Figure 2-1). The figures from 1992 onwards are inclusive of Harare South (Ward 01), whilst the figure for 2012 also includes the populations from six adjacent wards (Zwimba District Wards 24 and 35; Mazowe District Ward 20, and Goromonzi District Wards 06, 07 and 25 which are expected to be incorporated into the City of Harare in the near future), amounting to a total of 109,708 people. Corresponding annual rates of population growth for the respective census intervals are shown in Table 2-2. For the country as a whole there has been a dramatic decline in annual growth rates over the last 20 years, from over 3% for the period 1969 to 1992, to just over 1% for the last 20 years from 1992 to 2012. Likely causes of this marked decline include the impacts of HIV and the national economic collapse during the 2000s leading to high levels of out-migration. Table 2-1: Population Data for Greater Harare from 1969 to 2012 (Source: ZIMSTAT) Year 1969 1982 1992 2002 2012 Harare urban 364,390 658,364 1,148,073 1,458,807 1,708,538 Chitungwiza 14,970 172,000 274,912 323,260 356,840 Epworth 62,630 114,067 167,462 Norton 12,438 29,000 44,397 67,591 Ruwa 1,447 23,681 56,333 Total Greater Harare 379,360 842,802 1,516,062 1,964,212 2,356,764 ZIMBABWE 5,134,300 7,608,432 10,412,548 11,631,657 12,973,808 Total as % of Zimbabwe 7.4 11.1 14.6 16.9 18.2 * Note that the Harare population figures from 1992 onwards include Harare South (Ward 1), and the figure for 2012 also includes populations from six adjacent wards amounting to a total of 109,708 people. Figure 2-1 below shows the population growth in Harare from 1969 to 2012. (Source: ZIMSTAT). Gauff Ingenieure 2-3 Greater Harare Water and Sanitation Investment Plan Appendix 3.1 Harare 2 Millions 1.5 Population 1 0.5 0 1969 1982 1992 2002 2012 Harare urban Figure 2-1: Harare Population Growth from 1969 to 2012 Table 2-2 below shows mean inter census annual population growth rates for Greater Harare from 1969 to 2012. (Source: ZIMSTAT). Table 2-2: Inter Census Annual Growth Rates for Greater Harare Period 1969-82 1982-92 1992-02 2002-12 Harare urban 4.66% 5.72% 2.42% 1.59% Chitungwiza 20.66% 4.80% 1.63% 0.99% Epworth 6.18% 3.91% Norton 8.83% 4.35% 4.29% Ruwa 32.25% 9.05% Total Greater Harare 6.33% 6.05% 2.62% 1.84% ZIMBABWE 3.07% 3.19% 1.11% 1.10% Growth for Harare urban has shown a similar marked decline from above 4.5% per annum prior to 1992 to 2.42% for 1992-2002 and further to 1.59% for 2002-2012 (and which for 2012 includes the additional population from six adjacent wards not counted during 2002). Other potential factors contributing to the slower growth rate over the last census interval include implementation of the Murambatsvina programme which saw the violent destruction of informal housing units, and has acted as a strong deterrent to further illegal settlements; and persistent difficulties in providing reliable water and sanitation services. 2.2 Future Population Growth Future population growth rates for Greater Harare were estimated through consideration of historical rates of growth (Table 2-2); comparison to regional data (Table 2-3); comparison to estimated growth rates for towns included under the associated Urgent Water Supply and Sanitation Rehabilitation Project (UWSSRP), (Table 2-4); and through discussions with the respective urban authorities. Data on population growth was obtained from 87 urban centres (>25,000 people) in seven comparable Southern and East African countries for which data was available (Namibia, Botswana, Mozambique, Zambia, Malawi, Tanzania, Kenya), as recorded over their most recent census interval (variously 1997-2007 to 2002-2012). For all 87 towns the overall Gauff Ingenieure 2-4 Greater Harare Water and Sanitation Investment Plan Appendix 3.1 Harare range of annual growth rates over the last decade was -0.03% to 6.97% with a mean value of 3.23% (Table 2-3). The data further suggests that growth is strongest in the largest cities (> 1 million inhabitants = 3.94%) and slightly lower in smaller centres (3.1% for centres smaller than 250,000 people). Table 2-3 shows comparative annual growth rates for 87 Southern and East African urban areas (>25,000 people) over their respective most recent census intervals (from 1997-2007 to 2002-2012). Table 2-3: Comparative Annual Growth Rates for 87 Southern and East African Cities Population Number Range (%) Median (%) Mean (%) > 1 Million 4 1.25 - 5.78 4.36 3.94 500,000 - 1Million 5 2.79 - 4.69 4.06 3.88 250,000-500,000 12 0.83 - 7.16 3.39 3.47 100,000-250,000 32 0.38 - 6.55 2.71 3.08 25,000-100,000 34 -0.03 - 6.97 3.14 3.11 Total 87 -0.03 - 7.16 3.32 3.23 Under the UWSSRP future population growth rates for the six project towns (Chegutu, Masvingo, Kwekwe, Mutare, Chitungwiza and Harare urban) were examined and debated at a combined workshop held in Harare on 09 July 2013. A key outcome of the workshop was to estimate future annual rates of population growth to 2020 and 2030 for each of the project centres, based on the specific conditions pertaining to each of the centres. Table 2-4 shows the projected annual growth rates for the medium (2012-2020) and long term (2020-2030) for the six UWSSRP project towns. (Source: Workshop, Harare, 09 July 2013). Table 2-4: Projected Annual Growth Rates for six Urban Centres Included in the UWSSRP Annual Growth Rate (%) Period 2002-2012 2012-2020 2020-2030 Chegutu 1.39 4 2 Masvingo 2.45 3 1.5-2 Kwekwe 0.71 3 4 Mutare 1.00 3 4 Chitungwiza 0.93 1.1 2 Harare 0.23 4 4 The resulting estimates varied between 1.1-4% for the period 2012-2020 and from 2-4% for the subsequent interval from 2020-2030. Future growth for Harare urban was estimated at 4% per annum throughout. Following a series of meetings with Harare Water and the City of Harare, and particularly with respect to the continuing adverse macroeconomic situation, the growth figure to 2020 was subsequently revised downwards. Gauff Ingenieure 2-5 Greater Harare Water and Sanitation Investment Plan Appendix 3.1 Harare Based on these deliberations, and particularly with respect to the continuing difficult macroeconomic outlook, the overall future rate of growth for Greater Harare for the period 2012-2020 was estimated at 2%, this being slightly higher than the figure of 1.84% as obtained for the previous census interval. Consistent with this overall figure, the growth rates of the individual urban centres for the period 2012-2020 have been maintained at the same levels as for 2002-2012, other than for Epworth and Harare urban (Table 2-5). For Epworth, due to restricted opportunities for expansion, the rate of growth is expected to decline from 3.91% to 2.50%. For Harare urban, it was assumed that the relatively restricted opportunities for growth in Chitungwiza and Epworth would be compensated for by marginally higher rates of growth here, such that the future growth was forecast to increase from the previous figure of 1.59% for 2002-2012 to that of 1.75% for 2012-2020. Table 2-5: Projected Future Annual Growth Rates for Greater Harare Annual Growth Rate (%) Period 2002-2012 2012-2020 2020-2025 2025-2030 Harare urban 1.59 1.75 4.00 5.00 Chitungwiza 0.99 0.99 2.00 4.00 Epworth 3.91 2.50 2.00 2.00 Norton 4.29 4.29 4.00 5.00 Ruwa 9.05 9.05 4.00 5.00 Total Greater Harare 1.84 2.00 3.59 4.68 Population growth for Greater Harare is projected to escalate markedly after 2020, to 3.59% for the period 2020-2025 and increasing to 4.68% for the subsequent interval to 2030. Corresponding projections for the individual urban centres of Harare urban, Norton and Ruwa are 4% to 2025 and 5% to 2030. Estimates for Epworth are markedly lower (2% and 2%) again due to space constraints, and also for Chitungwiza (2% and 4%), on the basis that the targeted area of expansion on the Nyatsime farms is further away from the city centre than much of Harare urban, such that development in this area is likely to be slower until such time as the closer areas are beginning to reach capacity. 2.3 Harare Urban Future Population For the purpose of estimating future populations for Harare Urban the above proposed annual growth rates of 1.75% to 2020, 4.0% to 2025 and 5.0% to 2030 were used. Resulting annual population estimates are shown in Table 2-6. These figures suggest population increases from 1,708,538 (2012) to 1,962,908 in 2020 and 3,047,987 in 2030. This implies total population increases of 254,370 people for the interval 2012-2020, of 1,085,079 people for the period 2020-2030, and overall from 2012-2030 of 1,339,449 people. Table 2-6 shows the estimated annual and cumulative population increases for the period 2012-2030, based on projected annual growth rates of 4.29% for the mid-term (2012-2020) and thereafter increasing to 4% to 2025 and 5% to 2030. Gauff Ingenieure 2-6 Greater Harare Water and Sanitation Investment Plan Appendix 3.1 Harare Table 2-6: Projected Annual Populations for Harare 2012-2030 Year Annual Growth Estimated Population Cumulative Population Rate (%) Increase 2012 1.75 1,708,538 2013 1.75 1,738,437 29,899 2014 1.75 1,768,860 60,322 2015 1.75 1,799,815 91,277 2016 1.75 1,831,312 122,774 2017 1.75 1,863,360 154,822 2018 1.75 1,895,969 187,431 2019 1.75 1,929,148 220,610 2020 1.75 1,962,908 254,370 2021 4 2,041,425 332,887 2022 4 2,123,081 414,543 2023 4 2,208,005 499,467 2024 4 2,296,325 587,787 2025 4 2,388,178 679,640 2026 5 2,507,587 799,049 2027 5 2,632,966 924,428 2028 5 2,764,614 1,056,076 2029 5 2,902,845 1,194,307 2030 5 3,047,987 1,339,449 Gauff Ingenieure 2-7 Greater Harare Water and Sanitation Investment Plan Appendix 3.1 Harare 3 URBAN PLANNING 3.1 Overview Harare is the capital city of Zimbabwe. Together with the contiguous settlements of Chitungwiza and Epworth it makes up Harare Province. As the capital, it is the largest city in the country, hosts many national and local institutions, and is the centre of commercial and industrial activity. With an area of 84,994 ha Harare accounts for 82% of the overall extent of Greater Harare and, with a 2012 census count of 1,708,538, included 72% of the overall population. The city is divided into 46 wards (Figure 3-1). For the purpose of this project, it was decided to also include portions of six adjacent wards parts of which have been, or are anticipated as being, incorporated into the city in the near future, certainly within the lifespan of the project (i.e. before 2030). These wards comprise, to the west, Wards 35 (Whitecliff, Rainham, Spitzkop, Heaney and Rydale Ridge) and 24 (Mt. Hampden) of Zwimba District; to the north, Ward 20 (Mt. Pleasant Heights) of Mazowe District; and Wards 6 (Sally Mugabe Heights) and 7 (Echo and Rumani farms) of Goromonzi District; and to the east Ward 25 (Caledonia) of Goromonzi District. Other neighbouring areas are, to the east, Epworth, Ruwa and Wards 14, 15 and 23 of Goromonzi District; and to the south, Chitungwiza and Wards 1, 9 and 10 of Seke District. The surrounding areas generally comprise prime farming lands. The Central Business District (CBD) is situated in Ward 6 (City Centre), although many of the houses and flats in the neighbouring areas have now been converted to commercial use. Indeed, there is a proposal to enlarge the CBD to include portions of Ward 7 (Avondale) to the north, Ward 8 (Highlands) to the east, Ward 2 (Eastlea) to the southeast, parts of Wards 4 (Mbare) and 10 (Sunningdale) to the south, and to the west Ward 5 (Belvedere), although this has yet to be adopted. The primary industrial areas extend to the south and west of the CBD, particularly Graniteside within Ward 10 (Sunningdale), Workington and Southerton in Ward 11 (Mbare); Lochinvar and Aspindale Park in Ward 13 (Rugare); Willowvale in Ward 26 (Highfield) and Ardbennie in Ward 24 (Highfield), with additional minor portions in the southeastern part of Ward 5 (Belvedere), the northern part of Ward 4 (Mbare) and to the west and north of Ward 23 (Waterfalls). To the east there is a secondary industrial area, Masasa, which is mainly located within the southern part of Ward 9 (Greendale), with a minor extension into the northeastern corner of Ward 22 (Hatfield). All wards include residential areas of various types: low density (LD), medium density (MD), high density (HD) or informal (INF) settlements. There are ten wards that comprise entirely of LD housing, plus Mabelreign and Hatfield which are predominantly LD but also include smaller portions of MD housing (25% and 10%, respectively). Collectively these wards cover the major part of the northern and eastern sectors of the city, plus a substantial band across the south. This includes the City Centre (Ward 6) and, extending to the west, Belvedere (Ward 5), Mabelreign (Ward 16) and Marlborough (Ward 41); to the north, Avondale (Ward 7), Mt. Pleasant (Ward 17) and Borrowdale (Ward 18); to the east, Eastlea (Ward 2), Highlands (Ward 8) and Greendale (Ward 9); and, in a band across the south, Hatfield (Ward 22) and Waterfalls (Ward 23). MD housing does not dominate in any wards, but rather occurs as a component in association with either LD housing (as for Mabelreign and Hatfield), or else HD housing, as Gauff Ingenieure 3-8 Greater Harare Water and Sanitation Investment Plan Appendix 3.1 Harare is the case for Sunningdale (Ward 10), Kambuzuma (Ward 14), Highfield (Ward 25), Glen View (Ward 31) and Dzivarasekwa (Ward 40). HD housing dominates the southwestern and western portions of the city, with relatively small occurrences to the north (Hatcliffe, Ward 42) and to the east (Mabvuku, Wards 19 and 21; Tafara, Wards 20 and 46). Immediately to the south of the City Centre is Mbare (Wards 3, 4, 11 and 12) and Sunningdale (Ward 10). Continuing to the southwest, within the sector bounded by the Simon Mazorodze Road (leading south to Masvingo), the High Glen Road (to the west) and the Bulawayo Road, are included the HD areas of Highfield (Wards 24, 25 and 26), Rugare (Ward 13), Kambuzuma (Ward 14) and Warren Park (Ward 15). Further out, to the west of High Glen Road, are the suburbs of Glen Norah (Wards 27, 28 and 29), Glen View (Wards 30, 31 and 32), Budiriro (Wards 33 and 43), Mufakose (Wards 34, 35 and 36), Kuwadzana (Wards 37, 38 and 44), and Dzivarasekwa (Wards 39, 40 and 45). The single remaining ward, Ward 1 (Harare Rural or Harare South),covers a vast swathe across the southern portion of the city from the headwaters of Lake Chivero in the west to Epworth in the east, and from Chitungwiza in the south to the remainder Harare in the north. Previously this portion comprised commercial farm land and, at the time of the 2002 national census (population of 23,023 people), was excluded from the remainder of Harare. Over the subsequent decade large parts have been subdivided and settled informally, that is to say without provision of any services, such that by 2012 the population had risen to 113,599. This is an ongoing process and which, despite having now been incorporated into the City, is overseen by the Department of Physical Planning rather than the City of Harare. Ward 1 includes minor portions of LD housing, these comprising the residents of the remaining farms that have not yet been subdivided, and also HD residents (situated immediately to the south of Waterfalls). In addition to the above 46 wards, parts of six of the adjacent wards have already been incorporated into the city or are planned to be incorporated in the coming years. Of these, the population of the four wards to the north have been classified as LD, these being primarily agricultural areas but that include Mt. Hampden (Zwimba Ward 24), Mt. Pleasant Heights (Mazowe Ward 20), Sally Mugabe Heights (Goromonzi Ward 6) and the adjacent farms of Rumani and Echo (Goromonzi Ward 7, incorporated but not yet subdivided). The remaining two wards are Caledonia (Goromonzi Ward 25) to the east and Whitecliff/ Rainham/ Spitzkop/ Heaney and Rydale Ridge (Zwimba Ward 35) to the west. Caledonia comprises entirely of informal settlement. Whitecliff is dominated by informal settlement (75%), but also includes portions of MD (20%) and LD (5%) housing. A summary of the wards is shown in Table 3-1. Gauff Ingenieure 3-9             )LJXUH 3-1 :DUG0DSZLWK+RXVLQJ &DWHJRULHV +DUDUH Buckland Estates 2030 ±   Borrowdale Estates 2020 Mt. Hampden Ward 42 2030 LD,HD Kinvarra 2020    Ward 18 LD Ward 41 LD Ward 17   LD Ward 8 LD Ward 7 Ward 40 Ward 16 Rainham LD MD,HD LD,MD 2020   Ward 9 0 LD Ward 39 Ward 45 HD LD,HD Ward 46 Ward 6 LD,HD Ward 38 Ward 5 LD Ward 19 0 HD LD HD Ward 15 Caledonia Ward 44 MD,HD 2030 LD,HD Ward 37 HD Ward 2 Ward 20 LD HD Ward 4   HD /HJHQG Ward 14 Ward 11 Ward 36 MD,HD Ward 21 5HVLGHQWLDO5RDGV Ward 34 HD HD Ward 3 HD HD HD Ward 10 7UXQN3ULPDU\5RDGV Ward 13 MD,HD HD Ward 12 Ward 22 5DLO/LQH Ward 35 HD LD,MD HD 5LYHU6WUHDP &DWHJRU\ Ward 43 Ward 26 Ward 25 LD,HD +' HD MD,HD /' Ward 33   HD /'+' Ward 30 Ward 24 Ward 23 Ward 29 HD LD /'0' HD HD Ward 32 0'+' HD Ward 27 HD 3URMHFW%RXQGDU\ Ward 31 Ward 28 MD,HD ([SDQVLRQ$UHDV HD   Ward 1 LD,HD *UHDWHU+DUDUH :DWHUDQG6DQLWDWLRQ ,QYHVWPHQW3ODQ         .LORPHWHUV           Greater Harare Water and Sanitation Investment Plan Appendix 3.1 Harare Table 3-1: Summary of Wards Ward No. Name Area (ha) Population Land Use / Housing Category Proportion of 2012 housing stands developed (%) 1 Harare South 19,440.23 113,599 LD (5%), HD (5%), INF (90%) 25 2 Eastlea 2,260.94 37,024 LD 85 3 Mbare 103.90 22,397 HD 100 4 Mbare 115.07 15,027 HD 100 5 Belvedere 2,012.05 21,981 LD 100 6 City Centre 813.86 21,257 LD 100 7 Avondale 1,761.95 29,372 LD 100 8 Highlands 2,731.80 20,785 LD 100 9 Greendale 8,776.36 48,026 LD 65 10 Sunningdale 547.68 22,042 MD (25%), HD (75%) 100 11 Mbare 772.39 20,835 HD 100 12 Mbare 171.50 22,324 HD 100 13 Rugare 1,201.89 23,123 HD 95 14 Kambuzuma 593.30 30,517 MD (10%), HD (90%) 100 15 Warren Park 1,934.17 66,182 MD (5%), HD (95%) 95 16 Mabelreign 2,767.76 46,598 LD (75%), MD (25%) 75 17 Mt Pleasant 3,327.02 26,412 LD 90 18 Borrowdale 7,749.12 32,789 LD 75 19 Mabvuku 121.50 21,138 HD 100 20 Tafara 681.06 24,145 HD 70 21 Mabvuku 2,107.06 23,036 HD 60 22 Hatfield 2,663.36 44,612 LD(90%), MD(10%) 90 23 Waterfalls 3,029.66 63,955 LD 100 24 Highfield 461.99 29,488 HD 90 25 Highfield 304.78 29,858 MD (20%), HD (80%) 100 26 Highfield 711.92 36,275 HD 100 27 Glen Norah 394.21 32,409 HD 100 28 Glen Norah 274.25 27,419 HD 100 29 Glen Norah 105.96 13,237 HD 100 30 Glen View 409.80 53,508 HD 95 31 Glen View 170.94 22,975 MD (15%), HD (85%) 95 32 Glen View 320.46 37,210 HD 95 33 Budiriro 587.02 60,116 HD 95 34 Mufakose 883.70 18,532 HD 100 35 Mufakose 369.26 23,937 HD 100 36 Mufakose 280.05 12,993 HD 100 37 Kuwadzana 1,035.82 70,754 HD 75 38 Kuwadzana 361.71 34,466 HD 100 39 Dzivarasekwa 213.02 24,507 HD 100 40 Dzivarasekwa 1,882.05 45,317 MD (10%), HD (90%) 50 41 Marlborough 5,887.05 55,881 LD 65 42 Hatcliffe 2,300.06 45,344 LD (5%), HD (95%) 70 43 Budiriro 1,259.64 61,120 HD 75 44 Kuwadzana 409.24 26,926 HD 75 45 Dzivarasekwa 421.05 28,900 HD 70 46 Tafara 266.55 10,482 HD 85 Subtotal 84,994.15 1,598,830 ZWM 35 Whitecliff 42,382 LD (5%), MD (20%), HD (75%) 15 ZWM 24 Mt. Hampden 8,931 LD 25 MAZ 20 Mt. Pleasant 13,308 LD 30 Heights GOR 6 Sally Mugabe 12,174 LD 30 GOR 7 Rumani 5,901 LD 30 GOR 25 Caledonia 27,012 HD 25 Subtotal 109,708 Total 1,708,538 Gauff Ingenieure 3-11 Greater Harare Water and Sanitation Investment Plan Appendix 3.1 Harare 3.2 Master Plan There are a number of significant challenges as regards predicting the future spatial pattern of growth for Harare. Firstly, Harare lacks a master plan, other than the outdated Harare Combination Master Plan which was developed some 25 years ago during the late 1980s and adopted in 1992. This was prepared against a background of a considerable housing deficit and in the face of expected rapid population increase. Secondly, the planning environment is complicated by the presence of competing authorities, in particular the City of Harare and the Department of Physical Planning under the Ministry of Local Government, Public Works and National Housing. The Ministry of Local Government remains the primary authority over state land even within urban areas. This includes portions of land that have been retained by the state for future allocation, as well as former commercial farms that have been acquired under the land reform programme. Communication and cooperation between the City Council and the Department of Physical Planning is often inadequate. For example there are numerous cases whereby the Department of Physical Planning has developed and/or authorised residential plans with little or no consultation with the City of Harare, and despite the fact that the city is subsequently expected to provide services for such developments. Another result is that there is no single source from which one can obtain comprehensive and reliable data concerning future plans for development. The situation is further complicated by the fact that access to and allocation of land has become strongly politicised, particularly in the run up to the recent national elections. This has led to widespread manipulation of ward boundaries and to the allocation of lands for political purposes, with little regard to basic issues of town planning. The on-going land reform programme also continues to impact development patterns within the Harare area. The continued absence of security over agricultural land provides a strong stimulus for current owners of land within or adjacent to urban areas to seek to convert such land to urban development and to subdivide and sell the resulting stands as quickly as possible, thus minimizing the risk of loss due to possible future repossession or reallocation. Again this is happening with little or no consideration of wider urban planning issues. Another significant issue is the emergence and continued growth of informal settlements within Harare, particularly within Ward 1 and in the peripheral settlements of Caledonia and Whitecliff. Such developments cannot be ignored, yet pose particular demands and challenges in terms of cost and associated complexities for the future provision of services. The following analysis of future supply and demand of different types of housing, and resulting future ward populations is based on detailed discussions held with District Officers or technical staff in each of the 20 administrative “Districts” of the City of Harare, plus numerous meetings with staff of the Department of Town Planning, plus the District Administrator for Harare South. It should be noted, in this respect, that the District boundaries used by the City of Harare, in many places differ from the ward boundaries used by ZIMSTAT and as are followed for the purpose of this project. 3.3 Opportunities for Growth The expected general pattern of development is for continued expansion of LD housing to the north and northeast (between the Lomagundi and Murewa roads), and for continued HD expansion to the west and south of the city. This will serve to confine future extension of the Gauff Ingenieure 3-12 Greater Harare Water and Sanitation Investment Plan Appendix 3.1 Harare sewer network to the southern portions of the city, whilst the LD residents to the north can continue to rely on septic tanks. For the purpose of converting numbers of stands to numbers of people the following conversions have been applied: for HD 10 people per stand and for MD and LD each seven people per stand. Twelve areas were identified for future LD expansion, eight within the boundaries of the current 46 wards and four in the peripheral areas to the north (Table 3-2). Within the existing wards, collectively, there is opportunity to develop a further 14,500 LD stands and to accommodate a population of 101,500 people. Additional LD growth is expected to be absorbed in the adjacent areas of Zwimba Ward 24, Mazowe Ward 20 and Goromonzi Wards 6 and 7. Some LD development is expected in the medium term to 2020 in all potential areas other than Goromonzi Ward 7, and in all cases also extending to the longer term (2030). Opportunities for MD expansion are relatively limited. A total of 1,800 stands (12,600 people) were identified for Wards 16, 22, 40 and 45. The major MD development, however, is expected to occur to the west within Zwimba Ward 35, where a further 2,000 stands (14,000 residents) are expected. As for LD housing, development of MD housing in each of these areas is expected to start in the medium term (to 2020) and to continue into the longer term (2030) period. Fifteen of the existing wards appear to offer possibility for HD expansion, collectively amounting to a total of 14,510 stands or 145,100 residents. For all fifteen wards, development is expected to start in the medium term and, for ten of the wards to be completed by 2020, and for the remaining five to extend into the following period to 2030. The bulk of the low income development is expected to comprise informal housing, and is anticipated to occur primarily within Ward 1 and the peripheral wards of Zwimba 35 to the west and Goromonzi 25 to the east (99,500 stands or 995,000 people). All growth in these areas in the medium term to 2020 is expected to comprise informal housing. However, during the subsequent interval to 2030, while it is assumed that informal growth will continue in these areas, it is further assumed that a substantial portion of the informal settlement in each of these areas will be provided with services and thus upgraded to formal HD housing. Table 3-2: Opportunities for Residential Expansion Ward Type Stands Population Year Map ID LA 2 LD 800 5,600 2020/30 LB 9 LD 3,500 24,500 2020/30 LC 16 LD 1,500 10,500 2020/30 LD 17 LD 400 2,800 2020/30 LE 18 LD 1,500 10,500 2020/30 LF 21 LD 1,000 7,000 2020/30 LG 41 LD 4,000 28,000 2020/30 LH 42 LD 1,800 12,600 2020/30 LI ZWM 24 LD 4,120 28,840 2020/30 LJ MAZ 20 LD 4,120 28,840 2020/30 LK GOR 6 LD 4,120 28,840 2020/30 Gauff Ingenieure 3-13 Greater Harare Water and Sanitation Investment Plan Appendix 3.1 Harare Ward Type Stands Population Year Map ID LL GOR 7 LD 2,120 14,840 2030 Subtotal LD 28,980 202,860 2030 MA 16 MD 500 3,500 2020/30 MB 22 MD 600 4,200 2020/30 MC 40 MD 500 3,500 2020/30 MD 45 MD 200 1,400 2020/30 ME ZWM 35 MD 2,000 14,000 2020/30 Subtotal MD 3,800 26,600 2030 HB 13 HD 100 1,000 2020 HC 15 HD 200 2,000 2020 HD 20 HD 1,000 10,000 2020/30 HE 21 HD 1,000 10,000 2020/30 HF 24 HD 360 3,600 2020 HG 30 HD 280 2,800 2020 HH 31 HD 120 1,200 2020 HI 32 HD 200 2,000 2020 HJ 33 HD 350 3,500 2020 HK 37 HD 2,500 25,000 2020/30 HL 40 HD 4,000 40,000 2020/30 HM 43 HD 2,200 22,000 2020/30 HN 44 HD 1,000 10,000 2020 HO 45 HD 1,000 10,000 2020 HP 46 HD 200 2,000 2020 Subtotal HD 14,510 145,100 2030 INA 1 HD/INFORMAL 65,000 650,000 2020/30 INB ZWM 35 HD/INFORMAL 27,000 270,000 2020/30 INC GOR 25 HD/INFORMAL 7,500 75,000 2020/30 Subtotal INFORMAL 99,500 995,000 2020/30 TOTAL 146,790 1,369,560 2030 Gauff Ingenieure 3-14 270000 275000 280000 285000 290000 295000 300000 305000 310000 315000 320000 Figure 3-2 8050000 8050000 Future Town Development Map Harare Buckland Estates 2030 ± 8045000 8045000 Borrowdale Estates 2020 Mt. Hampden Ward 42 LD,HD 2030 Kinvarra 2020 1:75,000 8040000 8040000 Ward 18 LD Ward 41 LD Ward 17 8035000 8035000 LD Legend Expansion Areas Ward 8 LD Ward No. Ward 7 Rainham Ward 40 Ward 16 LD Landuse MD,HD LD,MD 2020 Agriculture 8030000 8030000 Ward 9 LD 0 Ward 39 Business Ward 45 HD LD,HD CBD Ward 46 Industrial Ward 6 LD,HD Ward 38 Ward 5 LD Ward 19 Institutional LD 0 HD Ward 15 HD Caledonia Ward 44 MD,HD Mining/Quarrying LD,HD 2030 Ward 37 Ward 20 Recreational HD Ward 2 LD HD Residential Ward 4 8025000 8025000 HD Residential Roads Ward 14 Ward 11 Ward 36 MD,HD HD Ward 21 Trunk/Primary Roads Ward 34 HD Ward 3 HD HD HD Ward 10 Project Boundary Ward 13 MD,HD HD Rail Line Ward 12 Ward 22 Ward 35 HD LD,MD HD River / Stream Ward 43 Ward 26 Ward 25 LD,HD HD MD,HD Ward 33 8020000 8020000 HD Ward 30 Ward 24 Ward 23 Ward 29 HD LD HD HD Ward 32 HD Ward 27 Ward 31 HD MD,HD Ward 28 HD 8015000 8015000 Ward 1 LD,HD Greater Harare Water and Sanitation Investment Plan 8010000 8010000 0 1 2 4 6 8 Kilometers 270000 275000 280000 285000 290000 295000 300000 305000 310000 315000 320000 Greater Harare Water and Sanitation Investment Plan Appendix 3.1 Harare 3.4 Future Demand by Housing Types The distribution of population in 2012 by housing types was 28.3% LD, 3.0% MD, 59.4% HD and 9.4% informal settlements (Table 3-3). Based on discussions with planning officials it is expected that the combined proportion of LD and MD residents will gradually decline over the planning period from a combined figure of 31.3% for 2012, to 29% for 2020 to 25% by 2030. During the same period the proportion of informal settlement is expected to grow from 9.4% for 2012 to 13.6% for 2020 and 19.6% for 2030. This implies a corresponding decrease in the proportion of HD population from 59.4% in 2012 to 57.4% in 2020 to 55.4% in 2030. Using these figures, the future estimated populations by housing types for the years 2020 and 2030 are shown in Table 3-3. This suggests that the LD population will grow from 483,000 in 2012, by 29,000 people to 512,000 in 2020, and then by 173,000 people to reach 686,000 in 2030. The MD population is forecast to increase from 50,000 in 2012 to 57,000 in 2020 and to 76,000 in 2030. The HD population was just over 1 million in 2012. This is forecast to grow by 113,000 to 1.13 million in 2020 and then by 674,000 to reach 1.69 million in 2030. Coupled with this, the informal population is expected to grow from 161,000 in 2012, by 106,000 to reach 267,000 in 2020, and by a further 330,000 to reach a total of 597,000 in 2030. Table 3-3: Estimated Future Populations by Residential Types Type LD MD HD INF Total Estimated Proportion (%) 2012 28.3 3.0 59.4 9.4 100 2020 26.1 2.9 57.4 13.6 100 2030 22.5 2.5 55.4 19.6 100 Estimated Population 2012 482,961 50,409 1,014,130 161,038 1,708,538 2020 512,319 56,924 1,126,709 266,956 1,962,908 2030 685,797 76,200 1,688,585 597,405 3,047,987 Estimated Population Growth 2012-20 29,358 6,515 112,579 105,918 254,370 2020-30 173,478 19,276 561,876 330,449 1,085,079 2012-30 202,836 25,791 674,455 436,367 1,339,449 Estimated Growth of Residential Stands 2012-20 4,194 931 11,258 10,592 26,975 2020-30 24,783 2,754 56,188 33,045 116,770 2012-30 28,977 3,685 67,446 43,637 143,745 Using the conversion factors of seven residents per each LD or MD stand and 10 for each HD or informal stand, the population growth figures imply an overall increase of 26,975 Gauff Ingenieure 3-16 Greater Harare Water and Sanitation Investment Plan Appendix 3.1 Harare residential stands of all types to 2020, and a further increase of 116,770 to 2030 (Table 3-3). This implies the mean development of 3,372 stands per year to 2020 and thereafter of 11,678 stands per year to 2030. In terms of waste water management, given that the LD and informal stands will not be serviced with sewers, this implies lower mean annual demands for new sewer connections of 1,524 stands per annum to 2020 and then 5,894 to 2030. 3.5 Comparison to Expected Level of Growth Respective figures for expected population growth by housing types (Table 3-3), as compared to potential opportunities for growth (Table 3-2), are summarised in Table 3-4. For LD housing, the existing wards appear to offer a total growth opportunity of 14,500 stands or 101,500 people. This is more than adequate to cater for the anticipated demand of 29,358 extra LD residents to 2020, but substantially short of the projected demand of 173,478 new residents to 2030. Thus, by 2030 all LD growth within the existing wards is expected to be fully taken up, and a similar amount of growth will have taken place in the neighbouring areas to the north. However, growth in all prospective areas, other than Goromonzi Ward 7, is expected to start prior to 2020 and to continue into the subsequent interval to 2030. The picture for MD expansion is similar to that of LD, in that the identified opportunities for expansion within the existing wards of 1,800 stands or 12,600 people are sufficient to cater for demand to 2020 (6,515 people) but not to 2030 (25,791 people). It appears possible to accommodate the projected shortfall within Zwimba Ward 35. Again, development in all five potential areas appears likely to span both time horizons to 2020 and to 2030. It is also feasible that there might be additional MD developments in the peripheral areas to the north, although this has not been provided for in this working model. The possibilities for expansion of HD housing within the existing wards amount to a total of 14,510 stands or 145,100 residents. This compares to an estimated demand of 112,579 people to 2020 and of 674,455 to 2030. Thus, all HD expansion to 2020 is projected to be accommodated within the existing wards, with the balance of opportunities being taken up during the subsequent period to 2030. However during this time, the bulk of HD growth will occur in Ward 1 and the peripheral areas of Caledonia and Whitecliff, and will come about through upgrading of existing informal settlements to formal HD housing. For informal settlements, the collective capacity of Ward 1 plus Caledonia plus Zwimba Ward 35 of 995,000 people or 99,500 stands appears more than adequate to cope with the expected demand through to 2030 of 436,367 people, even allowing for the anticipated ongoing conversion of informal to formal HD settlements. Table 3-4: Estimated Population Growth Versus Identified Growth Opportunities Type LD MD HD INF Total Estimated Population Growth 2012-20 29,358 6,515 112,579 105,918 254,370 2020-30 173,478 19,276 561,876 330,449 1,085,079 2012-30 202,836 25,791 674,455 436,367 1,339,449 Potential for Expansion Gauff Ingenieure 3-17 Greater Harare Water and Sanitation Investment Plan Appendix 3.1 Harare 2012-30 202,860 26,600 145,100 995,000 1,369,560 3.6 Future Ward Populations LD growth to 2020 is assumed to occur in the eleven identified wards at an even rate of 20% of identified opportunities, with the remaining balance of 80% being taken up during the subsequent interval to 2030, together with some growth in Goromonzi Ward 7. This scenario assumes equal growth for the peripheral wards of Zwimba Ward 24, Mazowe Ward 20 and Goromonzi Ward 6. In reality, although growth can be expected in each of these wards, the individual figures are likely to vary, but at present there is no way of predicting which areas will show stronger or weaker growth. Similarly, MD growth to 2020 is assumed to occur in all five potential areas at an even rate of 25% of the identified opportunities, with the remainder being developed during the subsequent interval to 2030. For HD housing, all growth in ten wards (Wards 13, 15, 24, 30, 31, 32, 33, 44, 45 and 46) is assumed to be fulfilled by 2020. The balance of the projected growth to 2030 is split amongst the other five wards (Wards 20, 21, 37, 40 and 43) in varying proportions (50- 80%) according to perceived situations, but with the balance of the potential growth in these five wards being realized during the subsequent period to 2030. For the second period to 2030, it is assumed that by 2030 roughly half of the overall settlement in Wards 1 and Zwimba Ward 35 will have been converted from informal to formal HD settlement, and for Caledonia the rate of conversion will be slightly slower at about 33%. The growth of informal settlements in Ward 1, Zwimba Ward 35 and Goromonzi Ward 25 is expected to continue to occur during both time horizons. To 2020, about 60% of the growth is expected within Ward 1, with the balance being split equally between Zwimba Ward 35 and Goromonzi Ward 25. During the subsequent interval to 2030, growth is according to the perceived opportunities within each of these wards. The resulting predicted ward populations are shown in Table 3-5 and in Table 3-6 these are broken down by housing types. Gauff Ingenieure 3-18 Greater Harare Water and Sanitation Investment Plan Appendix 3.1 Harare Table 3-5: Estimated Future Ward Populations WARD NAME TYPE 2012 2020 2030 1 Harare south LD (5%), HD (5%), INF (90%) 113,599 177,517 754,322 2 Eastlea LD 37,024 38,144 42,624 3 Mbare (Matapi) HD 22,397 22,397 22,397 4 Mbare (Nyenyere) HD 15,027 15,027 15,027 5 Belvedere LD 21,981 21,981 21,981 6 City Centre LD 21,257 21,257 21,257 7 Avondale LD 29,372 29,372 29,372 8 Highlands LD 20,785 20,785 20,785 9 Greendale LD 48,026 52,926 72,526 10 Sunningdale MD (25%) HD ( 75%) 22,042 22,042 22,042 11 Mbare HD 20,835 20,835 20,835 12 Mbare HD 22,324 22,324 22,324 13 Rugare HD 23,123 24,123 24,123 14 Kambuzuma MD (10%) HD (90%) 30,517 30,517 30,517 15 Warren Park MD (5%) HD (95%) 66,182 68,182 68,182 16 Mabelreign LD (75%) MD (25%) 46,598 49,573 60,598 17 Mt Pleasant LD 26,412 26,972 29,212 18 Borrowdale LD 32,789 34,889 43,289 19 Mabvuku HD 21,138 21,138 21,138 20 Tafara HD 24,145 29,145 34,145 21 Mabvuku HD 23,036 29,436 40,036 22 Hatfield LD (90%) MD (10%) 44,612 45,662 48,812 23 Waterfalls LD 63,955 63,955 63,955 24 Highfield HD 29,488 33,088 33,088 25 Highfield MD (20%) HD (80%) 29,858 29,858 29,858 26 Highfield HD 36,275 36,275 36,275 27 Glen Norah HD 32,409 32,409 32,409 28 Glen Norah HD 27,419 27,419 27,419 29 Glen Norah HD 13,237 13,237 13,237 30 Glen View HD 53,508 56,308 56,308 31 Glen View MD (15%) HD (85%) 22,975 24,175 24,175 32 Glen View HD 37,210 39,210 39,210 33 Budiriro HD 60,116 63,616 63,616 34 Mufakose HD 18,532 18,532 18,532 35 Mufakose HD 23,937 23,937 23,937 36 Mufakose HD 12,993 12,993 12,993 37 Kuwadzana HD 70,754 90,754 95,754 38 Kuwadzana HD 34,466 34,466 34,466 39 Dzivarasekwa HD 24,507 24,507 24,507 40 Dzivarasekwa MD (10%) HD (90%) 45,317 73,671 88,817 Gauff Ingenieure 3-19 Greater Harare Water and Sanitation Investment Plan Appendix 3.1 Harare WARD NAME TYPE 2012 2020 2030 41 Marlborough LD 55,881 61,481 83,881 42 Hatcliffe LD (5%) HD (95%) 45,344 47,864 57,944 43 Budiriro HD 61,120 78,120 83,120 44 Kuwadzana HD 26,926 36,926 36,926 45 Dzivarasekwa HD 28,900 39,250 40,300 46 Tafara HD 10,482 12,482 12,482 ZWM 35 Whitecliff LD (5%) MD (20%) INF (75%) 42,382 66,747 305,572 ZWM 24 Mt. Hampden LD 8,931 11,731 37,765 MAZ 20 Mt. Pleasant Heights LD 13,308 16,108 42,142 GOR 06 Sally Mugabe LD 12,174 15,632 41,008 GOR 07 Echo / Rumani farms LD 5,901 5,901 20,735 GOR25 Caledonia INF 27,012 48,012 102,012 TOTAL Harare urban 1,708,538 1,962,908 3,047,987 Gauff Ingenieure 3-20 Greater Harare Water and Sanitation Investment Plan Appendix 3.1 Harare Table 3-6: Estimated Future Ward Populations by Residential Types WARD 2012 2012 2012 2012 2012 2020 2020 2020 2012 2020 2030 2030 2030 2030 2030 LD MD HD INF TOTAL LD MD HD INF TOTAL LD MD HD INF+ TOTAL 1 5,680 5,680 102,23 113,599 5,680 5,680 166,15 177,517 5,680 - 360,801 387,841 754,322 9 7 2 37,024 - - - 37,024 38,144 - - - 38,144 42,624 - - - 42,624 3 - - 22,397 - 22,397 - - 22,397 - 22,397 - - 22,397 - 22,397 4 - - 15,027 - 15,027 - - 15,027 - 15,027 - - 15,027 - 15,027 5 21,981 - - - 21,981 21,981 - - - 21,981 21,981 - - - 21,981 6 21,257 - - - 21,257 21,257 - - - 21,257 21,257 - - - 21,257 7 29,372 - - - 29,372 29,372 - - - 29,372 29,372 - - - 29,372 8 20,785 - - - 20,785 20,785 - - - 20,785 20,785 - - - 20,785 9 48,026 - - - 48,026 52,926 - - - 52,926 72,526 - - - 72,526 10 - 5,511 16,531 - 22,042 - 5,511 16,531 - 22,042 - 5,511 16,531 - 22,042 11 - - 20,835 - 20,835 - - 20,835 - 20,835 - - 20,835 - 20,835 12 - - 22,324 - 22,324 - - 22,324 - 22,324 - - 22,324 - 22,324 13 - - 23,123 - 23,123 - - 24,123 - 24,123 - - 24,123 - 24,123 14 - 3,052 27,465 - 30,517 - 3,052 27,465 - 30,517 - 3,052 27,465 - 30,517 15 - 3,309 62,873 - 66,182 - 3,309 64,873 - 68,182 - 3,309 64,873 - 68,182 16 34,948 11,650 - - 46,598 37,048 12,525 - - 49,573 45,448 15,150 - - 60,598 17 26,412 - - - 26,412 26,972 - - - 26,972 29,212 - - - 29,212 18 32,789 - - - 32,789 34,889 - - - 34,889 43,289 - - - 43,289 19 - - 21,138 - 21,138 - - 21,138 - 21,138 - - 21,138 - 21,138 20 - - 24,145 - 24,145 - - 29,145 - 29,145 - - 34,145 - 34,145 21 - - 23,036 - 23,036 1,400 - 28,036 - 29,436 7,000 - 33,036 - 40,036 22 40,151 4,461 - - 44,612 40,151 5,511 - - 45,662 40,151 8,661 - - 48,812 23 63,955 - - - 63,955 63,955 - - - 63,955 63,955 - - - 63,955 24 - - 29,488 - 29,488 - - 33,088 - 33,088 - - 33,088 - 33,088 25 - 5,972 23,886 - 29,858 - 5,972 23,886 - 29,858 - 5,972 23,886 - 29,858 26 - - 36,275 - 36,275 - - 36,275 - 36,275 - - 36,275 - 36,275 27 - - 32,409 - 32,409 - - 32,409 - 32,409 - - 32,409 - 32,409 28 - - 27,419 - 27,419 - - 27,419 - 27,419 - - 27,419 - 27,419 29 - - 13,237 - 13,237 - - 13,237 - 13,237 - - 13,237 - 13,237 30 - - 53,508 - 53,508 - - 56,308 - 56,308 - - 56,308 - 56,308 31 - 3,446 19,529 - 22,975 - 3,446 20,729 - 24,175 - 3,446 20,729 - 24,175 32 - - 37,210 - 37,210 - - 39,210 - 39,210 - - 39,210 - 39,210 Gauff Ingenieure 3-21 Greater Harare Water and Sanitation Investment Plan Appendix 3.1 Harare WARD 2012 2012 2012 2012 2012 2020 2020 2020 2012 2020 2030 2030 2030 2030 2030 LD MD HD INF TOTAL LD MD HD INF TOTAL LD MD HD INF+ TOTAL 33 - - 60,116 - 60,116 - - 63,616 - 63,616 - - 63,616 - 63,616 34 - - 18,532 - 18,532 - - 18,532 - 18,532 - - 18,532 - 18,532 35 - - 23,937 - 23,937 - - 23,937 - 23,937 - - 23,937 - 23,937 36 - - 12,993 - 12,993 - - 12,993 - 12,993 - - 12,993 - 12,993 37 - - 70,754 - 70,754 - - 90,754 - 90,754 - - 95,754 - 95,754 38 - - 34,466 - 34,466 - - 34,466 - 34,466 - - 34,466 - 34,466 39 - - 24,507 - 24,507 - - 24,507 - 24,507 - - 24,507 - 24,507 40 - 4,532 40,785 - 45,317 - 5,407 68,264 - 73,671 - 8,032 80,785 - 88,817 41 55,881 - - - 55,881 61,481 - - - 61,481 83,881 - - - 83,881 42 2,267 - 43,077 - 45,344 4,787 - 43,077 - 47,864 14,867 - 43,077 - 57,944 43 - - 61,120 - 61,120 - - 78,120 - 78,120 - - 83,120 - 83,120 44 - - 26,926 - 26,926 - - 36,926 - 36,926 - - 36,926 - 36,926 45 - - 28,900 - 28,900 - 350 38,900 - 39,250 - 1,400 38,900 - 40,300 46 - - 10,482 - 10,482 - - 12,482 - 12,482 - - 12,482 - 12,482 ZWM 35 2,119 8,476 - 31,787 42,382 2,119 11,841 - 52,787 66,747 2,119 21,667 140,988 140,798 305,572 ZWM 24 8,931 - - - 8,931 11,731 - - - 11,731 37,765 - - - 37,765 MAZ 20 13,308 - - - 13,308 16,108 - - - 16,108 42,142 - - - 42,142 GOR 06 12,174 - - - 12,174 15,632 - - - 15,632 41,008 - - - 41,008 GOR 07 5,901 - - - 5,901 5,901 - - - 5,901 20,735 - - - 20,735 GOR 25 - - - 27,012 27,012 - - - 48,012 48,012 - - 33,246 68,766 102,012 TOTAL 482,961 50,409 1,014,130 161,038 1,708,538 512,319 56,924 1,126,709 266,956 1,962,908 685,797 76,200 1,688,585 597,405 3,047,987 Gauff Ingenieure 3-22 Greater Harare Water and Sanitation Strategic Plan Investment Plan Report Greater Harare Water and Sanitation Investment Plan APPENDIX 3.2: DETAILED DEMOGRAPHIC PROFILE REPORT – CHITUNGWIZA Gauff Ingenieure Greater Harare Water and Sanitation Investment Plan Appendix 3.2 Chitungwiza GREATER HARARE WATER AND SANITATION STRATEGIC PLAN GREATER HARARE WATER AND SANITATION INVESTMENT PLAN APPENDIX 3.2: DETAILED DEMOGRAPHIC REPORT CHITUNGWIZA Table of Contents 1 INTRODUCTION............................................................................................................................... 1-2 2 PAST, PRESENT AND FUTURE POPULATIONS ............................................................................ 2-3 2.1 HISTORICAL POPULATION DATA ..................................................................................................... 2-3 2.2 FUTURE POPULATION GROWTH ..................................................................................................... 2-4 2.3 CHITUNGWIZA FUTURE POPULATION .............................................................................................. 2-6 2.4 COMPARISON TO POPULATION ESTIMATES BY JICA......................................................................... 2-7 3 URBAN PLANNING.......................................................................................................................... 3-9 3.1 OVERVIEW .................................................................................................................................. 3-9 3.2 MASTER PLAN ........................................................................................................................... 3-13 3.3 OPPORTUNITIES FOR GROWTH .................................................................................................... 3-13 3.4 FUTURE DEMAND BY HOUSING TYPES .......................................................................................... 3-17 3.5 COMPARISON TO EXPECTED LEVEL OF GROWTH ........................................................................... 3-17 3.6 FUTURE W ARD POPULATIONS ..................................................................................................... 3-18 Index of Tables Table 2-1: Population Data for Greater Harare from 1969 to 2012 (Source: ZIMSTAT) .............................. 2-3 Table 2-2: Inter Census Annual Growth Rates for Greater Harare ............................................................. 2-4 Table 2-3: Comparative Annual Growth Rates for 87 Southern and East African Cities.............................. 2-5 Table 2-4: Projected Annual Growth Rates for six Urban Centres Included in the UWSSRP ...................... 2-5 Table 2-5: Projected Future Annual Growth Rates to 2030 for Greater Harare........................................... 2-6 Table 2-6: Projected Annual Populations for Chitungwiza 2012-2030 ........................................................ 2-7 Table 2-7: Comparison to Chitungwiza Population Estimates by JICA ....................................................... 2-8 Table 3-1: Summary of Wards................................................................................................................. 3-10 Table 3-2: Opportunities for Resedential Expansion ................................................................................ 3-14 Table 3-3: Current (2012) and Estimated Future Populations by Residential Types ................................. 3-17 Table 3-4: Estimated Population Growth Versus Identified Growth Opportunities..................................... 3-18 Table 3-5: Estimated Future Ward Populations to 2030 ........................................................................... 3-19 Table 3-6: Estimated Future Ward Populations to 2030 by Residential Types.......................................... 3-20 Index of Figures Figure 2-1: Chitungwiza Population Growth from 1969 to 2012.................................................................. 2-4 Figure 3-1: Chitungwiza Ward Map with Housing Categories................................................................... 3-12 Figure 3-2: Chitungwiza Future Town Development Map......................................................................... 3-16 Gauff Ingenieure 1-1 Greater Harare Water and Sanitation Investment Plan Appendix 3.2 Chitungwiza 1 INTRODUCTION Chitungwiza is a high density dormitory town located approximately 30 km to the south of Harare. The town developed from former peasant settlements. It was formed virtually from scratch on 01 January 1978 through amalgamation of the existing townships of St. Marys and Zengeza (formerly under the City of Harare), the Seke area (formerly under the African Development Fund of Internal Affairs) and the TILCOR industrial complex. Chitungwiza was granted town council status in 1981 and became a municipality in 1996. Development of Seke started in 1952, St Marys was started in 1962 under the Ministry of Local Government and Housing, and was taken over by the City of Harare in 1971, and Zengeza was started in 1974. At the time of formation of Chitungwiza in January 1978 the estimated population was 117,000. Chitungwiza includes an industrial portion known as the TILCOR Industrial Area. Some of the larger companies were Chibuku Breweries, Cone Textiles and Dairibord Zimbabwe. However, the city remains dominated by residential areas such that the economic base is unstable. Chitungwiza is currently the third largest urban centre in Zimbabwe, behind Harare and Bulawayo. Together with Norton, Epworth and Ruwa it forms part of the overall Harare metropolitan area, the combined population of which in 2012 was about 2.3 million. This represents 52% of the total urban population in the country. Gauff Ingenieure 1-2 Greater Harare Water and Sanitation Investment Plan Appendix 3.2 Chitungwiza 2 PAST, PRESENT AND FUTURE POPULATIONS 2.1 Historical Population Data Chitungwiza has grown in terms of population from 14,970 people in 1969 to 356,840 people in 2012 (Table 2-1, Figure 2-1), which represents doubling by four times in this period of less than 50 years. Corresponding annual rates of population growth for the respective census intervals are shown in Table 2-2. For the country as a whole there has been a dramatic decline in annual growth rates over the last 20 years, from over 3% for the period 1969 to 1992, to just over 1% for the last 20 years from 1992 to 2012. Likely causes of this marked decline include the impacts of HIV and the national economic collapse during the 2000s leading to high levels of out-migration. Table 2-1: Population Data for Greater Harare from 1969 to 2012 (Source: ZIMSTAT) Year 1969 1982 1992 2002 2012 Harare* 364,390 658,364 1,148,073 1,458,807 1,708,538 Chitungwiza 14,970 172,000 274,912 323,260 356,840 Epworth 62,630 114,067 167,462 Norton 12,438 29,000 44,397 67,591 Ruwa 1,447 23,681 56,333 Total Greater Harare 379,360 842,802 1,516,062 1,964,212 2,356,764 ZIMBABWE 5,134,300 7,608,432 10,412,548 11,631,657 12,973,808 Total as % of Zimbabwe 7.4 11.1 14.6 16.9 18.2 * Note that the Harare population figures from 1992 onwards include Harare South (Ward 1), and for 2012 also includes populations from six adjacent wards amounting to a total of 109,708 people. The downturn in annual growth rate has been dramatic for Chitungwiza, from 4.80% for the 1982-92 census interval to 1.63% for 1992-02 and to 0.99% for 2002-12. For Chitungwiza, other potential factors contributing to the slower growth rate over the last census interval include implementation of the Murambatsvina programme which saw the violent destruction of informal housing units, and has acted as a strong deterrent to further illegal settlements; the availability of cheaper (although unserviced) stands in nearby areas, such as Harare South; and persistent difficulties in providing reliable water and sanitation services. Figure 2-1 below shows the population growth in Chitungwiza 1969 to 2012. (Source: ZIMSTAT). Gauff Ingenieure 2-3 Greater Harare Water and Sanitation Investment Plan Appendix 3.2 Chitungwiza 0.4 Millions 0.35 0.3 0.25 Population 0.2 0.15 0.1 0.05 0 1969 1982 1992 2002 2012 Chitungwiza Figure 2-1: Chitungwiza Population Growth from 1969 to 2012 Table 2-2 below shows mean inter census annual population growth rates for Greater Harare from 1969 to 2012. (Source: ZIMSTAT). Table 2-2: Inter Census Annual Growth Rates for Greater Harare Period 1969-82 1982-92 1992-02 2002-12 Harare 4.66% 5.72% 2.42% 1.59% Chitungwiza 20.66% 4.80% 1.63% 0.99% Epworth 6.18% 3.91% Norton 8.83% 4.35% 4.29% Ruwa 32.25% 9.05% Total Greater Harare 6.33% 6.05% 2.62% 1.84% ZIMBABWE 3.07% 3.19% 1.11% 1.10% 2.2 Future Population Growth Future population growth rates for Greater Harare were estimated through consideration of historical rates of growth (Table 2-2); comparison to regional data (Table 2-3); comparison to estimated growth rates for other towns included under the associated Urgent Water Supply and Sanitation Rehabilitation Project (UWSSRP), (Table 2-4); and through discussions with the respective urban authorities. Data on population growth was obtained from 87 urban centres (>25,000 people) in seven comparable Southern and East African countries for which data was available (Namibia, Botswana, Mozambique, Zambia, Malawi, Tanzania, Kenya), as recorded over their most recent census interval (variously 1997-2007 to 2002-2012). For all 87 towns the overall range of annual growth rates over the last decade was -0.03% to 6.97% with a mean value of 3.23% (Table 2-3). The data further suggests that growth is strongest in the largest cities (> 1 million inhabitants = 3.94%) and slightly lower in smaller centres (3.1% for centres smaller than 250,000 people). Gauff Ingenieure 2-4 Greater Harare Water and Sanitation Investment Plan Appendix 3.2 Chitungwiza Table 2-3 shows comparative annual growth rates for 87 Southern and East African urban areas (>25,000 people) over their respective most recent census intervals (from 1997-2007 to 2002-2012). Table 2-3: Comparative Annual Growth Rates for 87 Southern and East African Cities Population Number Range (%) Median (%) Mean (%) > 1 Million 4 1.25% - 5.78% 4.36% 3.94% 500,000 - 1Million 5 2.79% - 4.69% 4.06% 3.88% 250,000-500,000 12 0.83% - 7.16% 3.39% 3.47% 100,000-250,000 32 0.38% - 6.55% 2.71% 3.08% 25,000-100,000 34 -0.03% - 6.97% 3.14% 3.11% Total 87 -0.03 - 7.16% 3.32% 3.23% Under the UWSSRP future population growth rates for the six project towns (Chegutu, Masvingo, Kwekwe, Mutare, Chitungwiza and Harare urban) were examined and debated at a combined workshop held in Harare on 09 July 2013. A key outcome of the workshop was to estimate future annual rates of population growth to 2020 and 2030 for each of the project centres, based on the specific conditions pertaining to each of the centres. Table 2-4 shows the projected annual growth rates for the medium (2012-2020) and long term (2020-2030) for the six UWSSRP project towns. (Source: Workshop, Harare, 09 July 2013). Table 2-4: Projected Annual Growth Rates for six Urban Centres Included in the UWSSRP Annual Growth Rate (%) Period 2002-2012 2012-2020 2020-2030 Chegutu 1.39% 4% 2% Masvingo 2.45% 3% 1.5-2% Kwekwe 0.71% 3% 4% Mutare 1.00% 3% 4% Chitungwiza 0.93% 1.1% 2% Harare 0.23% 4% 4% The resulting estimates varied between 1.1-4% for the period 2012-2020 and from 2-4% for the subsequent interval from 2020-2030. For Chitungwiza, the following factors were identified as being important to future growth of the city: • Incorporation of portions of surrounding communal lands resulting in 7,000 new stands, • Incorporation of adjacent Nyatsime farms with estimated area for 45,000 stands, • Cheaper land price and cheaper rented accommodation than for Harare, • National economic recovery, Gauff Ingenieure 2-5 Greater Harare Water and Sanitation Investment Plan Appendix 3.2 Chitungwiza • Achievement of full capacity in manufacturing and other services, • Development of an agro-based economy, and • Good connectivity to other parts of the country. On the other hand it was noted that growth is currently being constrained by the limited ability to provide services, particularly water and sanitation. Based on these deliberations, and particularly with respect to the continuing difficult macroeconomic outlook, the overall future rate of growth for Greater Harare for the period 2012-2020 was estimated at 2%, this being slightly higher than the figure of 1.84% as obtained for the previous census interval. Consistent with this overall figure, the growth rates of the individual urban centres for the period 2012-2020 have been maintained at the same levels as for 2002-2012, other than for Epworth and Harare urban (Table 2-5). For Epworth, due to restricted opportunities for expansion, the rate of growth is expected to decline from 3.91% to 2.50%. For Harare urban, it was assumed that the relatively restricted opportunities for growth in Chitungwiza and Epworth would be compensated for by marginally higher rates of growth here, such that the future growth was forecast to increase from the previous figure of 1.59% for 2002-2012 to that of 1.75% for 2012-2020. Table 2-5: Projected Future Annual Growth Rates to 2030 for Greater Harare Annual Growth Rate (%) Period 2002-2012 2012-2020 2020-2025 2025-2030 Harare 1.59 1.75 4.00 5.00 Chitungwiza 0.99 0.99 2.00 4.00 Epworth 3.91 2.50 2.00 2.00 Norton 4.29 4.29 4.00 5.00 Ruwa 9.05 9.05 4.00 5.00 Total Greater Harare 1.84 2.00 3.59 4.68 Population growth for Greater Harare is projected to escalate markedly after 2020, to 3.59% for the period 2020-2025 and increasing to 4.68% for the subsequent interval to 2030. Corresponding projections for the individual urban centres of Harare urban, Norton and Ruwa are 4% to 2025 and 5% to 2030. Estimates for Epworth are markedly lower (2% and 2%) again due to space constraints, and also for Chitungwiza (2% and 4%), on the basis that the targeted area of expansion on the Nyatsime farms is further away from the city centre than much of Harare urban, such that development in this area is likely to be slower until such time as the closer areas are beginning to reach capacity. 2.3 Chitungwiza Future Population For the purpose of estimating future populations for Chitungwiza the above proposed annual growth rates of 0.99% to 2020, 2.0% to 2025 and 4.0% to 2030 were used. Resulting annual population estimates are shown in Table 2-6. These figures suggest population increases from 356,840 (2012) to 386,199 in 2020 and 518,774 in 2030. This implies total population increases of 29,359 people for the interval 2012-2020, of 132,575 people for the period 2020-2030, and overall from 2012-2030 of 161,934 people. Gauff Ingenieure 2-6 Greater Harare Water and Sanitation Investment Plan Appendix 3.2 Chitungwiza Table 2-6 shows the estimated annual and cumulative population increases for the period 2012-2030, based on projected annual growth rates of 0.99% for the mid-term (2012-2020) and thereafter increasing to 2% to 2025 and 4% to 2030. Table 2-6: Projected Annual Populations for Chitungwiza 2012-2030 Year Annual Growth Estimated Population Cumulative Population Increase Rate (%) 2012 0.99 356,840 2013 0.99 360,384 3,544 2014 0.99 363,964 7,124 2015 0.99 367,578 10,738 2016 0.99 371,229 14,389 2017 0.99 374,916 18,076 2018 0.99 378,640 21,800 2019 0.99 382,401 25,561 2020 0.99 386,199 29,359 2021 2 393,923 37,083 2022 2 401,801 44,961 2023 2 409,837 52,997 2024 2 418,034 61,194 2025 2 426,395 69,555 2026 4 443,450 86,610 2027 4 461,188 104,348 2028 4 479,636 122,796 2029 4 498,821 141,981 2030 4 518,774 161,934 2.4 Comparison to Population Estimates by JICA For the last several years JICA has been providing technical support to the Chitungwiza City Council, specifically to develop a master plan for future development of water supply, waste water treatment and solid waste treatment infrastructure. As part of this work JICA produced population estimates for Chitungwiza to 2020 and 2030, the respective projected future populations being 405,200 and 455,900 (Table 2-7). These estimates were based on using satellite imagery to count the number of stands and then multiplying up by the number of people per stand, as derived from a sample of 300 households. The overall estimate to 2020 by JICA of 405,200 residents is similar to that produced under the current project of 386,199; the difference of 19,001 equates to 4.9% of the projected 2020 total of 386,199. By 2030 the difference between the two sets of figures is larger, amounting to 60,034 people. The main difference between the two sets of figures is in Gauff Ingenieure 2-7 Greater Harare Water and Sanitation Investment Plan Appendix 3.2 Chitungwiza terms of growth rates. JICA proposes a higher growth rate from 2012-2020 than for this project (1.68% versus 0.99%), and then a lower growth rate than for the current project for the subsequent decade (1.19% versus 2.00% and then 4.00%). Table 2-7: Comparison to Chitungwiza Population Estimates by JICA Factor JICA GAUFF Population 2012 354,000 356,840 Annual growth rate 2012-20 (%) 1.68% 1.10% Population increase 2012-20 51,200 29,359 Population 2020 405,200 386,199 Annual growth rate 2020-30 (%) 1.19% 2.00% and 4.00% Population increase 2020-30 50,700 132,575 Population 2030 455,900 518,774 Population increase 2012-30 101,900 161,934 Gauff Ingenieure 2-8 Greater Harare Water and Sanitation Investment Plan Appendix 3.2 Chitungwiza 3 URBAN PLANNING 3.1 Overview Chitungwiza is sandwiched between the Manyame River and a south bank tributary, the Nyatsime River, which respectively define its northern and western boundaries. Downstream the Manyame River feeds into Lake Chivero. The eastern boundary approximates the alignment of the Harare-Seke road, whilst the southern boundary against Seke Communal Land is marked by the Duri River, a minor tributary of the Nyatsime River. Chitungwiza is bounded to the north by Harare South (Harare Ward 1) and to the west, south and north by Wards 10, 9, 8 and 1 of Seke District. Chitungwiza covers just 5,106 ha, or 51 km2. Yet with a 2012 population of 356,840 Chitungwiza accounted for 15.1% of the overall population of Greater Harare, and was the third largest urban settlement in Zimbabwe. Chitungwiza includes 25 wards, the overall extent of which largely coincides with the existing municipal boundary (Figure 3-1). The principal exception is for Ward 6, which extends considerably further to the west of the municipal boundary to include the portion of Longlands Farm situated between the Nyatsime and Manyame Rivers. This portion forms part of the future planned Nyatsime expansion. The three portions of Chitungwiza, St. Marys, Zengeza and Seke form a single contiguous block of high density residential settlement, broken up in places by minor drainages which take the form of vlei areas generally draining in a southwest direction into the Nyatsime River. Interspersed amongst this are minor portions of LD and MD housing. There are a number of shopping centres with associated commercial and home industries and, in Ward 14 space has been reserved for development of a town centre, but this has yet to come to fruition. There is also a heavy industrial portion, principally within Ward 12 but with provision to extend into the adjacent Ward 18 to the east. St. Marys is situated to the north. It comprises Wards 1-5, which are dominated by HD housing and which is fully developed with no opportunity for further expansion. Wards 1 and 2 have limited areas of LD housing which are not yet fully developed. Zengeza occupies the central portion of Chitungwiza. Zengeza is composed of five portions, known as Zengeza 1-5. In terms of wards the area is divided into nine wards (Wards 6-14). Wards 7, 8, 9 and 11 form a contiguous block to the east of St. Marys. This portion is already fully developed. Continuing further east, there are plans for additional minor HD development in Wards 10 (plus two sites of LD development) and Ward 14, and for Ward 13 there is minor opportunity for infill of existing LD housing. The remaining two wards (Ward 6 and Ward 12) are situated to the south. Ward 12 has some HD housing but the major portion comprises the Tilcor Industrial Area; it also includes the Zengeza wastewater treatment plant. Not all the demarcated industrial stands are being utilized such that there is capacity for additional infill. The remaining Ward 6, situated to the northwest, is the largest ward. It is here that there is greatest opportunity for future expansion, immediately to the west of the existing residential areas and continuing to the west onto Longlands Farm which forms part of the planned Nyatsime expansion area. The remaining 11 wards (Ward 15-25) make up the Seke portion of Chitungwiza. Seke includes more than 15 housing estates which are named after the alphabet (Units A, B, C, D, E, F, G, H, J, K, L, M, N, O and P). All of these wards are dominated by HD housing, Gauff Ingenieure 3-9 Greater Harare Water and Sanitation Investment Plan Appendix 3.2 Chitungwiza although there are small portions of MD housing in Ward 21 (to the north) and of LD housing in Wards 17 (to the southwest) and 25 (along the northern boundary). For Wards 15, 16, 17, 19, 20, 21 and 25 there is no further opportunity for HD expansion. The remaining four wards (Wards 18, 22, 23 and 24) are situated along the eastern and southern periphery of Chitungwiza. For all these wards there is an ongoing process of informal construction within the lowest lying areas in proximity to the Duri drainage. Many of the stands in these informal portions do not have water or sewer connections (they rely on shallow wells or boreholes), and some of them are too low lying to enable connection to the existing sewers. There is an ongoing process of regularizing these informal HD stands. Across the river to the southeast (adjacent to but outside of Ward 22) there is a plan for a new high density development with more than 2,000 stands, although this has not yet been approved. Ward 12 also has a plan for further development of HD housing in the southwestern portion and the northwestern Masango portion, adjacent to Ward 12, is reserved for future industrial expansion. A summary of the wards is shown in Table 3-1. Apart from the informal settlements in Wards 18, 22, 23 and 24 along the Duri drainage, virtually all other stands are serviced with individual household water connections. The same situation applies regarding sewer connections for these four wards. For the other wards, all HD areas are served with sewer connections, whilst the minor portions of LD housing in Wards 1, 2, 13, 17 and 25 are served by septic tanks. Table 3-1: Summary of Wards Ward Location Area (ha) Population Housing Proportion Proportion No. 2012 Category of of sewered developed stands (%) stands (%) 1 St Marys 112.45 8,262 HD (90%) LD 95 95 (10%) 2 St Marys 111.56 11,169 HD (90%) LD 95 95 (10%) 3 St Marys 109.72 10,057 HD 100 100 4 St Marys 251.34 27,560 HD 100 100 5 St Marys 56.25 10,620 HD 100 100 6 Zengeza 5 902.78 17,339 HD 40 100 7 Zengeza 1 28.18 7,988 HD 100 100 8 Zengeza 1 60.03 10,119 HD 100 100 9 Zengeza 2 86.89 8,229 HD 100 100 10 Zengeza 2 162.89 8,788 HD 50 100 11 Zengeza 3 81.73 9,392 HD 100 100 12 Zengeza 3 491.10 15,129 HD + IND 100 100 13 Zengeza 4 162.52 9,489 HD (95%) LD (5%) 95 95 Gauff Ingenieure 3-10 Greater Harare Water and Sanitation Investment Plan Appendix 3.2 Chitungwiza 14 Zengeza 4 183.23 15,484 HD 80 100 15 Seke D 231.00 13,781 HD 100 100 16 Seke J 181.46 14,730 HD 100 100 17 Seke K 139.55 15,242 HD (95%) LD (5%) 95 95 18 Seke L 477.84 19,717 HD + IND Informal 50 25 19 Seke F+C 155.87 16,712 HD 100 100 20 Seke E+H 64.69 11,308 HD 100 100 21 Seke A+B 197.65 18,666 HD (70%) MD 100 100 (30%) 22 Seke O 128.90 15,187 HD + Informal 70 90 23 Seke N+P 230.90 28,073 HD + Informal 70 90 24 Seke M 158.06 20,697 HD + Informal 60 80 25 Seke G 339.54 13,102 HD (90%) LD 95 90 (10%) Total 5,106.13 356,840 Gauff Ingenieure 3-11 288000 290000 292000 294000 296000 298000 300000 302000 8012000 8012000 Ward 1 St Marys HD, LD Lake Seke 8010000 8010000 Ward 4 Ward 2 Ward 3 St Marys St Marys St Marys Ward 8 HD HD, LD HD Zengeza 1 HD Harava Lake Ward 10 Ward 5 Zengeza 2 St Marys HD Ward 7 HD Zengeza 1 HD Ward 9 Zengeza 2 Ward 14 8008000 8008000 HD Zengeza 4 Ward 6 HD Ward 20 Zengeza 5 HD Seke Unit E and H Ward 15 HD Ward 11 Seke Unit D Ward 21 Zengeza 3 HD Seke Unit A and B HD HD, MD Ward 13 Zengeza 4 HD, LD Ward 25 Seke Unit G HD, LD Ward 16 8006000 8006000 Ward 12 Seke Unit J Ward 19 Zengeza 3 HD Seke Unit F and C BREAMAR HD Ward 17 HD 8.03 Sq.km Ward 22 Seke Unit K Seke Unit O HD, LD HD, Informal Ward 23 Seke Unit N and P HD, Informal Ward 24 Seke Unit M HD, Informal DUNOTTAR Ward 18 6.2 Sq.km Seke Unit L 8004000 8004000 HD, Informal CAWDOR 6.52 Sq.km TANTALLON 8002000 8002000 5.9 Sq.km EDINBURGH 8000000 8000000 8.09 Sq.km 7998000 7998000 NYATSIME RANCH 9.86 Sq.km Legend Rivers & Streams Residential Main Roads Project Boundary 7996000 7996000 Council Boundary Lakes Proposed Development Category HD HD, Informal HD, LD HD, MD 7994000 7994000 288000 290000 292000 294000 296000 298000 300000 302000 ± Figure 3-1 Greater Harare Water Ward Map with Housing Datum WGS 84 and Categories 1:55,000 Sanitation Investment Plan Chitungwiza Greater Harare Water and Sanitation Investment Plan Appendix 3.2 Chitungwiza 3.2 Master Plan Over the last few years JICA has been providing technical support to the Chitungwiza City Council, in particular to develop an updated master plan for future development of water supply, waste water treatment and solid waste management infrastructure to 2020 and 2030. A final draft has recently been produced. A key expectation of the master plan is to incorporate the six farms of Longlands, Braemar A, Dunnotar, Cawdor, Tantallon and Edinburgh into the municipal area of Chitungwiza. Collectively known as the Nyatsime Farms, these farms are situated to the south of the Nyatsime River, mainly between the Nyatsime River and the Charter Road (other than Edinburgh which continues to the west of the Charter Road). These form a single contiguous block of land, extending some 10 km to the south of Ward 6. The intention is that this area should be developed in phases, through to perhaps 2040, with the anticipation of providing 35,889 HD stands on 890 ha; 11,514 MD stands on 576 ha; 2,257 LD stands on 339 ha, and with 157 ha being reserved for industrial stands. The master plan also anticipates incorporation of a neighbouring portion of Seke Communal Land, adjacent to Ward 22. It is possible that this will be an ongoing exercise, with continued expansion into Seke Communal Land to the east, although no concrete plans for this exist as yet. 3.3 Opportunities for Growth Fourteen areas of possible residential expansion were identified within the extent of the current 25 wards of Chitungwiza (Table 3-2 and Figure 3-2), plus four in the surrounding areas: HD expansion in the adjacent portion of Seke Communal Land and on the Nyatsime farms mixed development of LD, MD and HD housing. Expansion to 2020 is expected to be confined to the existing wards and Seke Communal Land, but thereafter to 2030 the bulk of the expansion is expected to occur on the Nyatsime Farms. Development to 2030 is expected to be concentrated in the northern sector of the Nyatsime Farms (Longlands and Braemar). A layout plan has already been prepared for this area, showing opportunity for 10,542 HD, 1,670 MD and 2,875 LD stands (note this figure of 2,875 LD stands is in excess of the approximate figure of 2,257 LD stands for the entire extent of the Nyatsime Farms). This translates to a potential to accommodate a total of 105,420 HD, 11,690 MD and 20,125 LD residents (overall total of 137,235), and which represents roughly one third of the anticipated overall total for the six Nyatsime Farms. Collectively, to 2030, there is opportunity for development of an additional 21,037 stands to accommodate 192,235 additional people. For the purpose of converting numbers of stands to numbers of people the following conversions have been applied: for HD 10 people per stand and for MD and LD each seven people per stand. Broken down by housing types there is opportunity to accommodate a total of 26,495 LD residents, 15,610 MD dwellers; 147,970 HD people and 2,250 informal settlers (and considering only Phase I of the Nyatsime Farms development). For each area an indication of the anticipated timing of development (before or after 2020) is also provided. Gauff Ingenieure 3-13 Greater Harare Water and Sanitation Investment Plan Appendix 3.2 Chitungwiza Table 3-2: Opportunities for Resedential Expansion Map Ward Name Type Stands Population Year ID A 1 Infill of existing low density LD 60 420 2020 stands B 2 Infill of existing low density LD 60 420 2020 stands C 10 Layout approved for a private LD 300 2,100 2020 developer comprising a mix of HD and LD. D 10 Layout on state land for LD LD 120 840 2020 housing, not yet approved E 13 Infill of some existing LD stands LD 40 280 2020 that have not yet been developed F 17 Infill of existing low density LD 30 210 2020 stands G 25 Riverside LD layout plan in LD 300 2,100 2020 northern portion H Nyatsime Phase 1 LD 2,875 20,125 2030 Subtotal LD 3,785 26,495 I 6 Layout plan for 559 MD stands MD 560 3,920 2020 registered, but not yet approved. J Nyatsime Phase 5 and 6 MD 1,670 11,690 2030 Subtotal MD 2,230 15,610 K 10 Layout approved for a private HD 95 950 2020 developer comprising a mix of HD and LD. L 14 Plan for HD development HD 140 1,400 2020 (Mhurushomana) already approved and under development M 18 Plan for HD development in HD 2,020 20,200 2020 southwestern portion not yet approved. N Seke CL Plan for HD development with HD 2,000 20,000 2020 more than 2000 stands, not yet approved O Nyatsime Phase 2, 4 and 6 HD 10,542 105,420 2030 Subtotal HD 14,797 147,970 Gauff Ingenieure 3-14 Greater Harare Water and Sanitation Investment Plan Appendix 3.2 Chitungwiza Map Ward Name Type Stands Population Year ID P 22 Infill of HD in low lying strip INF 75 750 2020 along Duri River Q 23 Some HD infill along southern INF 75 750 2020 boundary Duri River R 24 Some HD infill along southern INF 75 750 2020 boundary Duri River Subtotal INF 225 2,250 Total N = 18 HD/MD/LD 21,037 192,325 2030 Gauff Ingenieure 3-15 288000 290000 292000 294000 296000 298000 300000 302000 8012000 8012000 Lake Seke 8010000 8010000 St. Mary's Harava Lake Zengeza 1 Zengeza 2 Zengeza 5 8008000 8008000 Unit H Unit B Zengeza 4 Unit E Unit D Unit A Zengeza 3 Unit F Unit G Unit C 8006000 8006000 Unit J BREAMAR FARM 8.03 Sq.km Unit O 2030 Unit K Unit N Unit M Unit P Unit L DUNOTTAR FARM 6.2 Sq.km 2030 8004000 8004000 CAWDOR FARM 6.52 Sq.km 2030 TANTALLON FARM 8002000 8002000 5.9 Sq.km 2030 EDINBURGH FARM 8.09 Sq.km 8000000 8000000 2030 Legend 7998000 7998000 NYATSIME RANCH FARM Distribution Zones 9.86 Sq.km Rivers & Streams 2030 Residential Main Roads Council Boundary Project Boundary Lakes Proposed Development Landuse 7996000 7996000 Agriculture Commercial Grasslands/Pastures Industrial Infrastructure/Utilities Institutional Mining/Quarrying Parks/Playgroung/Recreational 7994000 7994000 Residential Tourism 288000 290000 292000 294000 296000 298000 300000 302000 ± Figure 3-2 Future Town Development Datum WGS 84 Greater Harare Water Map 1:55,000 and Chitungwiza Sanitation Investment Plan Greater Harare Water and Sanitation Investment Plan Appendix 3.2 Chitungwiza 3.4 Future Demand by Housing Types The distribution of population in 2012 by housing types was 1.3% LD, 1.6% MD, 92.2% HD and 4.7% informal settlement (Table 3-3). For the purpose of calculating future demand for different types of housing, it was assumed that future proportions of housing types will generally be maintained at these values, except that future informal settlement will be restricted to the Duri River area, and will be completed by 2020. This gives rise to minor fluctuations in the proportions of HD and informal categories of housing. Using these figures, the future estimated populations for the years 2020 and 2030 broken down by housing categories are shown in Table 3-3. This suggests that the LD population will grow from 4,489 in 2012 by 369 people, to give a 2020 population of 4,858, and then by 2,034 people to give a 2030 population of 6,523. MD growth will similarly be limited, growing from 5,600 in 2012 by 461 to 6,061 in 2020, and by 2,542 to 8,142 in 2030. The bulk of the growth is expected to be in HD housing, which will expand from 330,017 in 2012 by 26,279 people to 356,296 in 2020, and by 155,108 people to 485,125 in 2030. Growth in informal population is expected to be limited to 2,250 people during the interval from 2012 to 2020, resulting in a small rise in population from 16,734 in 2012 to 18,984 in 2020, and which will be maintained to 2030. Table 3-3: Current (2012) and Estimated Future Populations by Residential Types Type LD MD HD INF Total Estimated Proportion (%) 2012 1.3 1.6 92.4 4.7 100 2020 1.3 1.6 92.2 4.9 100 2030 1.3 1.6 93.4 3.7 100 Estimated Population 2012 4,489 5,600 330,017 16,734 356,840 2020 4,858 6,061 356,296 18,984 386,199 2030 6,523 8,142 485,125 18,984 518,774 Estimated Population Growth 2012-20 369 461 26,279 2,250 29,359 2020-30 1,665 2,081 128,829 0 132,575 2012-30 2,034 2,542 155,108 2,250 161,934 3.5 Comparison to Expected Level of Growth Respective figures for expected population growth by housing types (Table 3-3) as compared to potential opportunities for growth (Table 3-2) are summarised in Table 3-4. The opportunities for LD and MD growth far outstrip the projected demand. Although much of the supply relates to development of the Nyatsime Farms, the existing wards have more than enough capacity to satisfy the projected demand, such that future LD and MD growth to 2030 is projected to be confined to the existing wards and allocated proportionally in Gauff Ingenieure 3-17 Greater Harare Water and Sanitation Investment Plan Appendix 3.2 Chitungwiza relation to the identified opportunities. Informal growth is expected to be confined to the interval 2012-2020 and to be restricted to the three wards along the Duri River, where this is already taking place. The major expected demand is for HD housing (155,108 people), and which is projected to marginally outstrip the potential supply by 2030 (147,970 but including only the initial portion of the Nyatsime Farms). If necessary any excess demand can be accommodated either by reallocation of some of the proposed LD and MD housing to HD, or else through continued expansion to the south within Nyatsime. HD growth to 2020 is expected to be relatively limited (26,729 people) and to be split between the existing wards and adjacent portion of Seke Communal Land. Table 3-4: Estimated Population Growth Versus Identified Growth Opportunities Type LD MD HD INF Total Estimated Population Growth 2012-20 369 461 26,279 2,250 29,359 2020-30 1,665 2,081 128,829 0 132,575 2012-30 2,034 2,542 155,108 2,250 161,934 Potential for Expansion 2012-30 26,495 15,610 147,970 2,250 192,325 3.6 Future Ward Populations For the sake of future population projections it has firstly been assumed that development to 2020 is confined to the existing city boundary, plus the immediately neighbouring portion of Seke Communal Land. The remainder of these expansion opportunities are taken up during the subsequent interval to 2030, with the remaining bulk of the growth, in particular the HD growth, occurring on the northern portion of the Nyatsime Farms (Longlands and Braemar). For the HD sector, growth to 2020 is expected to occur within Wards 10 (Zengeza 2, n = 950 people) and 14 (Zengeza 4, n = 1,400), with the remaining anticipated expansion being split between Ward 18 (Seke Unit L, n = 12,027) and Seke Communal Land (n = 11,902). For 2030, it is assumed that the remaining capacity in Ward 18 (n = 8,137) and Seke Communal Land (n = 8,098) will be taken up, with the excess growth being directed to the Nyatsime Farms (n = 112,558). Minimal growth is projected for the MD and LD sectors, and the existing possibilities within Wards 1, 2, 6, 10, 13 and 17 appear to be more than sufficient to cater for the projected demand to 2030. Accordingly, for both time intervals, growth is allocated in proportion to the identified opportunities in these wards. No MD/LD growth is projected for the Nyatsime Farms up to 2030, although the draft layout plan does include some provision for this. The resulting predicted ward populations are shown in Tables 3-5 and, in Table 3-6, these are broken down by housing types. Gauff Ingenieure 3-18 Greater Harare Water and Sanitation Investment Plan Appendix 3.2 Chitungwiza Table 3-5: Estimated Future Ward Populations to 2030 WARD NAME TYPE 2012 2020 2030 1 St Marys HD (90%) LD (10%) 8,262 8,286 8,403 2 St Marys HD (90%) LD (10%) 11,169 11,193 11,310 3 St Marys HD 10,057 10,057 10,057 4 St Marys HD 27,560 27,560 27,560 5 St Marys HD 10,620 10,620 10,620 6 Zengeza 5 HD 17,339 17,800 19,881 7 Zengeza 1 HD 7,988 7,988 7,988 8 Zengeza 1 HD 10,119 10,119 10,119 9 Zengeza 2 HD 8,229 8,229 8,229 10 Zengeza 2 HD 8,788 9,909 10,678 11 Zengeza 3 HD 9,392 9,392 9,392 12 Zengeza 3 HD 15,129 15,129 15,129 13 Zengeza 4 HD (95%) LD (5%) 9,489 9,505 9,563 14 Zengeza 4 HD 15,484 16,884 16,884 15 Seke D HD 13,781 13,781 13,781 16 Seke J HD 14,730 14,730 14,730 17 Seke K HD (95%) LD (5%) 15,242 15,254 15,309 18 Seke L HD + Informal 19,717 31,744 39,917 19 Seke F+C HD 16,712 16,712 16,712 20 Seke E+H HD 11,308 11,308 11,308 21 Seke A+B HD (70%) MD(30%) 18,666 18,666 18,666 22 Seke O HD + Informal 15,187 15,937 15,937 23 Seke N+P HD + Informal 28,073 28,823 28,823 24 Seke M HD + Informal 20,697 21,447 21,447 25 Seke G HD (90%) LD (10%) 13,102 13,224 13,773 Seke CL HD - 11,902 20,000 Nyatsime Farms HD/MD/LD - - 112,558 TOTAL 356,840 386,199 518,774 Gauff Ingenieure 3-19 Greater Harare Water and Sanitation Investment Plan Appendix 3.2 Chitungwiza Table 3-6: Estimated Future Ward Populations to 2030 by Residential Types WARD 2012 2012 2012 2012 2012 2020 2020 2020 2012 2020 2030 2030 2030 2030 2030 LD MD HD INF TOTAL LD MD HD INF TOTAL LD MD HD INF TOTAL 1 826 - 7,436 - 8,262 850 - 7,436 - 8,286 967 - 7,436 - 8,403 2 1,117 - 10,052 - 11,169 1,141 - 10,052 - 11,193 1,258 - 10,052 - 11,310 3 - 10,057 - 10,057 - - 10,057 - 10,057 - - 10,057 - 10,057 4 - - 27,560 - 27,560 - - 27,560 - 27,560 - - 27,560 - 27,560 5 - - 10,620 - 10,620 - - 10,620 - 10,620 - - 10,620 - 10,620 6 - - 17,339 - 17,339 - 461 17,339 - 17,800 - 2,542 17,339 - 19,881 7 - - 7,988 - 7,988 - - 7,988 - 7,988 - - 7,988 - 7,988 8 - - 10,119 - 10,119 - - 10,119 - 10,119 - - 10,119 - 10,119 9 - - 8,229 - 8,229 - - 8,229 - 8,229 - - 8,229 - 8,229 10 - - 8,788 - 8,788 171 - 9,738 - 9,909 940 - 9,738 - 10,678 11 - - 9,392 - 9,392 - - 9,392 - 9,392 - - 9,392 - 9,392 12 - - 15,129 - 15,129 - - 15,129 - 15,129 - - 15,129 - 15,129 13 474 - 9,015 - 9,489 490 - 9,015 - 9,505 548 - 9,015 - 9,563 14 - - 15,484 - 15,484 - - 16,884 - 16,884 - - 16,884 - 16,884 15 - - 13,781 - 13,781 - - 13,781 - 13,781 - - 13,781 - 13,781 16 - - 14,730 - 14,730 - - 14,730 - 14,730 - - 14,730 - 14,730 17 762 - 14,480 - 15,242 774 - 14,480 - 15,254 829 - 14,480 - 15,309 18 - - 15,774 3,943 19,717 - - 27,801 3,943 31,744 - - 35,974 3,943 39,917 19 - - 16,712 - 16,712 - - 16,712 - 16,712 - - 16,712 - 16,712 20 - - 11,308 - 11,308 - - 11,308 - 11,308 - - 11,308 - 11,308 21 - 5,600 13,066 - 18,666 - 5,600 13,066 - 18,666 - 5,600 13,066 - 18,666 22 - - 12,150 3,037 15,187 - - 12,150 3,787 15,937 - - 12,150 3,787 15,937 23 - - 22,458 5,615 28,073 - - 22,458 6,365 28,823 - - 22,458 6,365 28,823 24 - - 16,558 4,139 20,697 - - 16,558 4,889 21,447 - - 16,558 4,889 21,447 Gauff Ingenieure 3-20 Greater Harare Water and Sanitation Investment Plan Appendix 3.2 Chitungwiza WARD 2012 2012 2012 2012 2012 2020 2020 2020 2012 2020 2030 2030 2030 2030 2030 LD MD HD INF TOTAL LD MD HD INF TOTAL LD MD HD INF TOTAL 25 1,310 - 11,792 13,102 1,432 - 11,792 - 13,224 1,981 - 11,792 - 13,773 Seke CL - - - - - - - 11,902 - 11,902 - - 20,000 - 20,000 Nyatsime - - - - - - - - - - - - 112,558 - 112,558 TOTAL 4,489 5,600 330,017 16,734 356,840 4,858 6,061 356,296 18,984 386,199 6,523 8,142 485,125 18,984 518,774 Gauff Ingenieure 3-21 Greater Harare Water and Sanitation Strategic Plan Investment Plan Report Greater Harare Water and Sanitation Investment Plan APPENDIX 3.3: DETAILED DEMOGRAPHIC PROFILE REPORT – EPWORTH Gauff Ingenieure Greater Harare Water and Sanitation Investment Plan Appendix 3.3 Epworth GREATER HARARE WATER AND SANITATION STRATEGIC PLAN GREATER HARARE WATER AND SANITATION INVESTMENT PLAN APPENDIX 3.3: DETAILED DEMOGRAPHIC REPORT EPWORTH Table of Contents 1 INTRODUCTION............................................................................................................................... 1-2 2 PAST, PRESENT AND FUTURE POPULATIONS ............................................................................ 2-4 2.1 HISTORICAL POPULATION DATA ..................................................................................................... 2-4 2.2 FUTURE POPULATION GROWTH ..................................................................................................... 2-5 2.3 EPWORTH FUTURE POPULATION ................................................................................................... 2-7 3 URBAN PLANNING.......................................................................................................................... 3-9 3.1 OVERVIEW .................................................................................................................................. 3-9 3.2 MASTER PLAN ........................................................................................................................... 3-11 3.3 OPPORTUNITIES FOR GROWTH .................................................................................................... 3-12 3.4 FUTURE DEMAND BY HOUSING TYPES .......................................................................................... 3-14 3.5 COMPARISON TO EXPECTED LEVEL OF GROWTH ........................................................................... 3-15 3.6 FUTURE W ARD POPULATIONS ..................................................................................................... 3-15 Index of Tables Table 2-1: Population Data for Greater Harare from 1969 to 2012 (Source: ZIMSTAT) .............................. 2-4 Table 2-2: Inter Census Annual Growth Rates for Greater Harare ............................................................. 2-5 Table 2-3: Comparative Annual Growth Rates for 87 Southern and East African Cities.............................. 2-5 Table 2-4: Projected Annual Growth Rates for six Urban Centres Included in the UWSSRP ...................... 2-6 Table 2-5: Projected Future Annual Growth Rates for Greater Harare ....................................................... 2-7 Table 2-6: Projected Annual Populations for Epworth 2012-2030 .............................................................. 2-8 Table 3-1: Summary of Wards................................................................................................................. 3-11 Table 3-2: Opportunities for Residential Expansion ................................................................................. 3-12 Table 3-3: Estimated Future Populations by Residential Types................................................................ 3-14 Table 3-4: Estimated Population Growth Versus Identified Growth Opportunities..................................... 3-15 Table 3-5: Estimated Future Ward Populations ....................................................................................... 3-16 Table 3-6: Estimated Future Ward Populations by Residential Types ...................................................... 3-17 Index of Figures Figure 2-1: Epworth Population Growth from 1992 to 2012 ........................................................................ 2-4 Figure 3-1: Epworth Ward Map with Housing Categories ......................................................................... 3-10 Figure 3-2: Epworth Future Town Development Map ............................................................................... 3-13 Gauff Ingenieure 1-1 Greater Harare Water and Sanitation Investment Plan Appendix 3.3 Epworth 1 INTRODUCTION Epworth is situated on the south eastern periphery of Harare urban, sandwiched between Harare South, Hatfield and Mabvuku and, to the east, Ruwa. With a population of 167,462 in 2012 Epworth was the fifth largest urban centre in Zimbabwe, after Harare, Bulawayo, Chitungwiza and Mutare. The settlement of Epworth dates back to the late 1800s when the British South Africa Company granted some 1,102 hectares of land to the Methodist Wesleyan Mission in 1892. The Mission subsequently bought additional land in 1904 (Glenwood farm, 1,010 ha) and in 1908 (Adelaide farm 1,610 ha). The 500 or so families initially residing at Epworth Mission were allocated land (about 4,000 m2 each) for residential and agricultural (gardening) use. In broad terms, Epworth had taken shape as a settlement by 1929 and its development before and after that was incremental, informal and non-commercial. Large population influxes into Epworth occurred in the 1970s during the peak of the liberation war. This created a market for ‘urban land’ in Epworth and by 1980 a number of the original residents had sold portions of their land to the new arrivals. That the settlement was on relatively under-utilized Church land where little to no farming was going on in many ways influenced the pace and nature of population influx. The area’s proximity to Harare and absence of proper development controls made Epworth attractive to informal settlement. The Methodist Church did not have the institutional mechanisms to regulate the growth and planning of the settlement on its farms (Epworth, Glenwood and Adelaide). The flow of residents followed diverse patterns but notably some resident followers of the Church accommodated relatives who subsequently occupied their own pieces of land. While it is conceivable that some local land administration practices existed it is fair to say these were informal and by extension their activities generally irregular. These activities included informal land sales, ‘pegging’ and possible dispute resolution. A key challenge was that the influx occurred on land not planned for residential purposes. As such, no adequate reticulated water and sanitation facilities existed to cope with the population influx. The pace and pattern of Epworth’s growth increasingly overwhelmed the Church which was the default local authority for the area, and prompted the need for some form of administering and service-providing authority other than the Mission. In July 1983 the Mission donated a large portion of its land to central government. This was the first step towards the establishment of a formal local authority for the area. Subsequent to the donation, Government froze all developments in the area and initiated formal processes to guide the planned development of the area. This signalled the beginning of an ‘upgrading’ (re-planning and regularization) programme with an initial view to incorporate the area into the City of Harare following installation of relevant infrastructural services. Central government remained the authority for Epworth until the establishment of the Epworth Local Board in 1986. The mandate of the new board was to regularize existing settlements, provide services and to manage the planned development of the whole area. Despite success in regularizing some of the informal settlement, and the recent planned settlement of Glenwood Farm (Ward 3), additional informal activities have continued to the present. Epworth residents can thus be classified into three distinct categories as follows: Gauff Ingenieure 1-2 Greater Harare Water and Sanitation Investment Plan Appendix 3.3 Epworth  The early settlers or ‘originals’ mainly in Wards 1 and 4. These residents invariably had something to do with the Methodist Church either as followers, employees at the Church farms, or immediate relatives of the early settlers.  Settlers who came into Epworth during the liberation struggle and the early independence years (1970s through to 1983). These are mainly in Wards 2, 3 and 5. This period saw significant influx coinciding with the handover of Epworth by the Methodist Church to the Government. The areas are generally referred to as ‘extensions’ as they generally abut the areas where the ‘originals’ were settled.  ‘Overspill’ (Ward 6) made up of the most recent informal settlements i.e. yet to be regularized, and Ward 7, which holds the largest and last group of settlers. The area is also known as ‘Gada’ meaning ‘free riders’ who are generally seen as the illegal and informal settlers. The majority of the current residents are actively self-employed while a few are in wage employment. Most of Epworth’s residents live below the poverty line in an overcrowded area where basic infrastructure is inadequate. There is a gap between basic service requirements and actual provision for services like water and sanitation. The reality is that Epworth remains an urban fringe choking from years of informality that render parts of the settlement difficult to upgrade. Gauff Ingenieure 1-3 Greater Harare Water and Sanitation Investment Plan Appendix 3.3 Epworth 2 PAST, PRESENT AND FUTURE POPULATIONS 2.1 Historical Population Data Epworth has grown in terms of population from 62,630 in 1992, to 167,462 people in 2012 (Table 2-1, Figure 2-1). Corresponding annual rates of population growth for the respective census intervals are shown in Table 2-2. For the country as a whole there has been a dramatic decline in annual growth rates over the last 20 years, from over 3% for the period 1969 to 1992, to just over 1% for the last 20 years from 1992 to 2012. Likely causes of this marked decline include the impacts of HIV and the national economic collapse during the 2000s leading to high levels of out-migration. Table 2-1: Population Data for Greater Harare from 1969 to 2012 (Source: ZIMSTAT) Year 1969 1982 1992 2002 2012 Harare urban 364,390 658,364 1,148,073 1,458,807 1,708,538 Chitungwiza 14,970 172,000 274,912 323,260 356,840 Epworth 62,630 114,067 167,462 Norton 12,438 29,000 44,397 67,591 Ruwa 1,447 23,681 56,333 Total Greater Harare 379,360 842,802 1,516,062 1,964,212 2,356,764 ZIMBABWE 5,134,300 7,608,432 10,412,548 11,631,657 12,973,808 Total as % of Zimbabwe 7.4 11.1 14.6 16.9 18.2 * Note that the Harare population figures from 1992 onwards include Harare South (Ward 1), and for 2012 also includes populations from six adjacent wards amounting to a total of 109,708 people. Figure 2-1 below shows the population growth in Epworth from 1992 to 2012. (Source: ZIMSTAT). 180 Thousands 160 140 120 Population 100 80 60 40 20 0 1992 2002 2012 Epworth Figure 2-1: Epworth Population Growth from 1992 to 2012 Gauff Ingenieure 2-4 Greater Harare Water and Sanitation Investment Plan Appendix 3.3 Epworth Table 2-2 below shows mean inter census annual population growth rates for Greater Harare from 1969 to 2012. (Source: ZIMSTAT). Table 2-2: Inter Census Annual Growth Rates for Greater Harare Period 1969-82 1982-92 1992-02 2002-12 Harare urban 4.66% 5.72% 2.42% 1.59% Chitungwiza 20.66% 4.80% 1.63% 0.99% Epworth 6.18% 3.91% Norton 8.83% 4.35% 4.29% Ruwa 32.25% 9.05% Total Greater Harare 6.33% 6.05% 2.62% 1.84% ZIMBABWE 3.07% 3.19% 1.11% 1.10% Growth in Epworth has slowed from a mean annual rate of 6.18% for the period 1992-2002 to 3.91% for the interval 2002-2012. This has resulted in the population nearly tripling in size from 62,630 in 1992 to 167,462 in 2012. 2.2 Future Population Growth Future population growth rates for Greater Harare were estimated through consideration of historical rates of growth (Table 2-2); comparison to regional data (Table 2-3); comparison to estimated growth rates for towns included under the associated Urgent Water Supply and Sanitation Rehabilitation Project (UWSSRP), (Table 2-4); and through discussions with the respective urban authorities. Data on population growth was obtained from 87 urban centres (>25,000 people) in seven comparable Southern and East African countries for which data was available (Namibia, Botswana, Mozambique, Zambia, Malawi, Tanzania, Kenya), as recorded over their most recent census interval (variously 1997-2007 to 2002-2012). For all 87 towns the overall range of annual growth rates over the last decade was -0.03% to 6.97% with a mean value of 3.23% (Table 2-3). The data further suggests that growth is strongest in the largest cities (> 1 million inhabitants = 3.94%) and slightly lower in smaller centres (3.1% for centres smaller than 250,000 people). Table 2-3 shows comparative annual growth rates for 87 Southern and East African urban areas (>25,000 people) over their respective most recent census intervals (from 1997-2007 to 2002-2012). Table 2-3: Comparative Annual Growth Rates for 87 Southern and East African Cities Population Number Range (%) Median (%) Mean (%) > 1 Million 4 1.25% - 5.78% 4.36% 3.94% 500,000 - 1Million 5 2.79% - 4.69% 4.06% 3.88% 250,000-500,000 12 0.83% - 7.16% 3.39% 3.47% 100,000-250,000 32 0.38% - 6.55% 2.71% 3.08% 25,000-100,000 34 -0.03% - 6.97% 3.14% 3.11% Gauff Ingenieure 2-5 Greater Harare Water and Sanitation Investment Plan Appendix 3.3 Epworth Total 87 -0.03% - 7.16% 3.32% 3.23% Under the UWSSRP future population growth rates for the six project towns (Chegutu, Masvingo, Kwekwe, Mutare, Chitungwiza and Harare urban) were examined and debated at a combined workshop held in Harare on 09 July 2013. A key outcome of the workshop was to estimate future annual rates of population growth to 2020 and 2030 for each of the project centres, based on the specific conditions pertaining to each of the centres. Table 2-4 shows the projected annual growth rates for the medium (2012-2020) and long term (2020-2030) for the six UWSSRP project towns. (Source: Workshop, Harare, 09 July 2013). Table 2-4: Projected Annual Growth Rates for six Urban Centres Included in the UWSSRP Annual Growth Rate (%) Period 2002-2012 2012-2020 2020-2030 Chegutu 1.39% 4% 2% Masvingo 2.45% 3% 1.5-2% Kwekwe 0.71% 3% 4% Mutare 1.00% 3% 4% Chitungwiza 0.93% 1.1% 2% Harare 0.23% 4% 4% The resulting estimates varied between 1.1-4% for the period 2012-2020 and from 2-4% for the subsequent interval from 2020-2030. Based on these deliberations, and particularly with respect to the continuing difficult macroeconomic outlook, the overall future rate of growth for Greater Harare for the period 2012-2020 was estimated at 2%, this being slightly higher than the figure of 1.84% as obtained for the previous census interval. Consistent with this overall figure, the growth rates of the individual urban centres for the period 2012-2020 have been maintained at the same levels as for 2002-2012, other than for Epworth and Harare urban (Table 2-5). For Epworth, due to restricted opportunities for expansion, the rate of growth is expected to decline from 3.91% to 2.50%. For Harare urban, it was assumed that the relatively restricted opportunities for growth in Chitungwiza and Epworth would be compensated for by marginally higher rates of growth here, such that the future growth was forecast to increase from the previous figure of 1.59% for 2002-2012 to that of 1.75% for 2012-2020. Gauff Ingenieure 2-6 Greater Harare Water and Sanitation Investment Plan Appendix 3.3 Epworth Table 2-5: Projected Future Annual Growth Rates for Greater Harare Annual Growth Rate (%) Period 2002-2012 2012-2020 2020-2025 2025-2030 Harare urban 1.59% 1.75% 4.00% 5.00% Chitungwiza 0.99% 0.99% 2.00% 4.00% Epworth 3.91% 2.50% 2.00% 2.00% Norton 4.29% 4.29% 4.00% 5.00% Ruwa 9.05% 9.05% 4.00% 5.00% Total Greater Harare 1.84% 2.00% 3.59% 4.68% Population growth for Greater Harare is projected to escalate markedly after 2020, to 3.59% for the period 2020-2025 and increasing to 4.68% for the subsequent interval to 2030. Corresponding projections for the individual urban centres of Harare urban, Norton and Ruwa are 4% to 2025 and 5% to 2030. Estimates for Epworth are markedly lower (2% and 2%) again due to space constraints, and also for Chitungwiza (2% and 4%), on the basis that the targeted area of expansion on the Nyatsime farms is further away from the city centre than much of Harare urban, such that development in this area is likely to be slower until such time as the closer areas are beginning to reach capacity. 2.3 Epworth Future Population For the purpose of estimating future populations for Epworth the above proposed annual growth rates of 2.50% to 2020, and 2.0% to 2030 were used. Resulting annual population estimates are shown in Table 2-6. These figures suggest population increases from 167,462 (2012) to 204,036 in 2020 and 225,272 in 2030. This implies total population increases of 36,574 people for the interval 2012-2020, of 44,683 people for the period 2020-2030, and overall from 2012-2030 of 81,257 people. Table 2-6 shows the estimated annual and cumulative population increases for the period 2012-2030, based on projected annual growth rates of 2.50% for the mid-term (2012-2020) and thereafter reducing to 2% to 2030. Gauff Ingenieure 2-7 Greater Harare Water and Sanitation Investment Plan Appendix 3.3 Epworth Table 2-6: Projected Annual Populations for Epworth 2012-2030 Year Annual Growth Rate Estimated Cumulative Population (%) Population Increase 2012 2.50 167,462 2013 2.50 171,649 4,187 2014 2.50 175,940 8,478 2015 2.50 180,338 12,876 2016 2.50 184,847 17,385 2017 2.50 189,468 22,006 2018 2.50 194,205 26,743 2019 2.50 199,060 31,598 2020 2.50 204,036 36,574 2021 2 208,117 40,655 2022 2 212,279 44,817 2023 2 216,525 49,063 2024 2 220,855 53,393 2025 2 225,272 57,810 2026 2 229,778 62,316 2027 2 234,373 66,911 2028 2 239,061 71,599 2029 2 243,842 76,380 2030 2 248,719 81,257 Gauff Ingenieure 2-8 Greater Harare Water and Sanitation Investment Plan Appendix 3.3 Epworth 3 URBAN PLANNING 3.1 Overview Epworth comprises a small densely populated residential area situated on the outskirts of Harare to the southeast along the Chiremba Road. It is sandwiched between the airport (Harare Ward 1) and Hatfield (Harare Ward 22) to the west; the Ventersburg portion of Mabvuku to the north (Harare Ward 21); and Ruwa to the east. To the south, Epworth borders against farm land which forms part of Goromonzi District (Wards 23 and 24). The eastern and southern boundary is marked by the Ruwa River, whilst the remainder of Epworth is bisected by two additional tributaries of the Ruwa River: the Jacha River that drains through the central portion of Epworth and, to the east, the Sambwa which is situated between the Jacha and Ruwa Rivers. The Jacha and Sambwa Rivers are both flanked by sizeable wetland areas. The Ruwa River, from the southwestern corner of Epworth, continues to the southeast for another 8 km until it feeds into the Manyame River at the headwaters of Prince Edward Dam. Parts of Epworth are characterized by low granite outcrops (including the famous balancing rocks previously featured on the national currency), but most of the terrain is relatively flat to gently sloping. Epworth covers only 3,438 ha, or 34 km2. Yet with a 2012 population of 167,462, Epworth accounted for 7.1% of the overall population of Greater Harare, and had grown to become the fifth largest urban settlement in Zimbabwe. The town is divided into seven wards (Figure 3-1). It should be noted that there are substantial differences in the ward boundaries as used by ZIMSTAT and followed for this project, as compared to those currently in use by the Epworth Local Board. Epworth is dominated by residential housing. There are a number of shopping centres with associated home industry activities but there is no defined CBD, nor any formal industrial areas. This relates to its particular history of development under control of the Methodist Church. Gauff Ingenieure 3-9 299000 .000000 300000 .000000 301000 .000000 302000 .000000 303000 .000000 304000 .000000 305000 .000000 306000 .000000 307000 .000000 308000 .000000 309000 .000000 310000 .000000 311000.000000 312000 .000000 Figure 3-1 Ward Map With Housing Categories 8023000.000000 8023000.000000 Epworth Ward 1 LD HD ± 8022000.000000 8022000.000000 Ward 7 MD HD Datum : WGS84 Zone 36S Ward 6 Scale 1:21,500 MD HD 8021000.000000 8021000.000000 Ward 2 MD HD 8020000.000000 8020000.000000 Ward 5 MD HD Ward 4 LD HD Legend 8019000.000000 8019000.000000 Residential Roads Trunk/Primary Roads Rail Line 8018000.000000 8018000.000000 Ward 3 MD HD Rivers/Stream Lakes Project Boundary 8017000.000000 8017000.000000 Category Mixed (LD,HD) Mixed (MD,HD) Project Boundary 8016000.000000 8016000.000000 Expansion Areas New Mexico, Lyndhurst, Twentydales Estates, Good h 8015000.000000 8015000.000000 8014000.000000 8014000.000000 Greater Harare Water and Sanitation Investment Plan 8013000.000000 8013000.000000 0 0.5 1 2 Kilometers 299000 .000000 300000 .000000 301000 .000000 302000 .000000 303000 .000000 304000 .000000 305000 .000000 306000 .000000 307000 .000000 308000 .000000 309000 .000000 310000 .000000 311000.000000 312000 .000000 Greater Harare Water and Sanitation Investment Plan Appendix 3.3 Epworth Unlike many other urban areas in Zimbabwe, all the Epworth wards include a mixture of residential types. Wards 1 and 4 have some LD housing, Wards 2, 3, 5, 6 and 7 some MD housing, Ward 3 also has some HD housing, whilst all wards contain varying proportions of informal settlements. The informal settlements in Wards 2, 3 and 5 are relatively limited (c. 10% of the population) and are restricted to the low lying areas along the Jacha drainage. Wards 1, 4, 6 and 7 have much more substantial informal settlements (up to 50% of the respective populations), and not necessarily associated with wetland areas. In particular, the extensive western portions of Wards 4 and 6 comprise mainly informal settlements. The recent HD development in Ward 3, on what was previously Glenwood Farm, currently comprises the only formal HD development in Epworth. A summary of the wards is shown in Table 3-1. Table 3-1: Summary of Wards Ward Location Area (ha) Population Land Use / Proportion of No. 2012 Housing housing stands Category developed (%) 1 North 628.97 31,537 LD, INF 95 2 West 182.95 14,941 MD, INF 100 3 Southwest 330.76 16,020 MD, HD, INF 80 4 Southeast 996.48 23,320 LD, INF 55 5 Centre 208.29 16,273 MD, INF 100 6 Northeast 876.57 25,819 MD, INF 70 7 North centre 213.67 39,552 MD, INF 100 Total 3,437.68 167,462 3.2 Master Plan Epworth does not have any master plan. One of the key planning concerns in Epworth is how to regularise and provide services to the existing informal settlements, many of which have been settled in a haphazard manner. This presents numerous challenges to the provision of services, and will necessarily be a demanding and slow process. Based on discussions with town authorities it is assumed that no progress will be made in this respect during the medium term to 2020. However, during the subsequent interval to 2030 it is anticipated that roughly half of the existing informal settlement in Epworth will be upgraded to formal high density housing (with individual household water and sewer connections). Epworth has relatively limited opportunity for future expansion within the existing wards, and most of the surrounding areas, other than to the south, are already incorporated into either Harare or Ruwa, again limiting opportunities for future expansion. Thus, although some expansion is envisaged into the adjacent southern areas, the limited availability of land is expected to lead to slower rates of growth than has been the case in the past. The below analysis of future supply and demand of different types of residential housing to 2030, suggests that the projected demand to 2020 can just be accommodated within the existing wards, but thereafter any additional growth will need to be accommodated in adjacent areas to the south. Gauff Ingenieure 3-11 Greater Harare Water and Sanitation Investment Plan Appendix 3.3 Epworth 3.3 Opportunities for Growth Six areas of possible expansion were identified within the extent of the current seven wards of Epworth, two for LD housing, one for HD housing and three where there is likely to be expansion of informal settlements (Table 3-2, Figure 3-2). Collectively, these areas can accommodate a total of a further 3,900 stands. For the purpose of converting numbers of stands to numbers of people the following conversions have been applied: for HD and informal settlements 10 people per stand and for MD and LD each seven people per stand. Thus there is opportunity to accommodate a further 36,600 residents, comprising 5,600 LD residents, 4,000 HD and 27,000 informal settlers. For each area an indication of the anticipated timing of development (before or after 2020) is provided. Table 3-2: Opportunities for Residential Expansion Map Ward Type Stands Population Year ID A 4 LD 400 2,800 2020 B 6 LD 400 2,800 2020 Subtotal LD 800 5,600 C 3 HD 400 4,000 2020 Subtotal HD 400 4,000 D 1 INF 250 2,500 2020 E 4 INF 1,650 16,500 2020 F 6 INF 800 8,000 2020 Subtotal INF 2,700 27,000 Gauff Ingenieure 3-12 299000 .000000 300000 .000000 301000 .000000 302000 .000000 303000 .000000 304000 .000000 305000 .000000 306000 .000000 307000 .000000 308000 .000000 309000 .000000 310000 .000000 311000.000000 312000 .000000 313000 .000000 Figure 3-2 Future Town Developent Map Epworth 8023000.000000 8023000.000000 Ward 1 LD HD ± 8022000.000000 8022000.000000 Ward 7 MD HD Dutam : WGS 84 Zone 36S Ward 6 Scale 1:21,500 MD HD 8021000.000000 8021000.000000 Legend Ward 2 MD HD Expansion Areas 8020000.000000 8020000.000000 Ward 5 Ward No. MD HD Landuse Agriculture Ward 4 Commercial LD HD 8019000.000000 8019000.000000 Grasslands/Pastures Industrial Institutional Mining/Quarrying 8018000.000000 8018000.000000 Park/Playground And Other Recreational Spaces Ward 3 MD HD Proposed Development/Expansion Areas Residential Residential Roads 8017000.000000 8017000.000000 Trunk/Primary Roads Project Boundary Rail Line Rivers/Stream 8016000.000000 8016000.000000 Epw_Lakes New Mexico, Lyndhurst, Twentydales Estates, Good h 8015000.000000 8015000.000000 Greater Harare 8014000.000000 8014000.000000 Water and Sanitation Investment Plan 8013000.000000 8013000.000000 0 0.5 1 2 Kilometers 299000 .000000 300000 .000000 301000 .000000 302000 .000000 303000 .000000 304000 .000000 305000 .000000 306000 .000000 307000 .000000 308000 .000000 309000 .000000 310000 .000000 311000.000000 312000 .000000 313000 .000000 Greater Harare Water and Sanitation Investment Plan Appendix 3.3 Epworth 3.4 Future Demand by Housing Types The distribution of population in 2012 by housing types was 8.9% LD, 25.1% MD, 5.7% HD and 60.2% informal settlement (Table 3-3). The above analysis indicates that there is limited opportunity for LD growth, and no MD growth is anticipated. In fact the bulk of the future growth is expected to be informal settlement, but in the long term (2020-30) this will be tempered by conversion of some of the informal settlement to formal high density housing. The resulting anticipated changes in proportions of housing to 2020 and 2030 are shown in Table 3-3. The general trend is of a decrease in the combined proportion of LD and MD housing from 34.0% in 2012 to 30.6% in 2020 to 25.1% in 2030. The proportions of HD and informal housing (currently at 5.7% and 60.2%) are expected to expand marginally to 2020 (to 6.7% and 62.7%, respectively), but thereafter the anticipated conversion of informal settlements to HD housing is expected to lead to a marked drop in the proportion of informal settlements by 2030 (42.7%) and a corresponding increase in the proportion of HD housing (32.1%). Using these figures, the future estimated populations for the years 2020 and 2030 broken down by housing categories are shown in Table 3-3. This suggests that the LD population will grow from 14,880 in 2012 by 5,600 people, to give a 2020 population of 20,480, and that there will be no further LD growth to 2030. Similarly, there will be no MD growth such that the 2012 MD population of 42,100 will be maintained to 2030. The largest change is projected for HD housing, which will experience modest growth of 4,000 people from 9,612 in 2012 to 13,612 in 2020, but thereafter will increase by 66,284 people to 2030 to give a total 2030 population of 79,896. The informal population is expected to grow from 100,870 in 2012 by 26,974 to give a 2020 population of 127,844, and then to reduce by 21,601 people to 2030 (through conversion to formal HD housing) to give a 2030 informal population of 106,243. Table 3-3: Estimated Future Populations by Residential Types Type LD MD HD INFORMAL Total Estimated Proportion (%) 2012 8.9 25.1 5.7 60.2 100 2020 10.0 20.6 6.7 62.7 100 2030 8.2 16.9 32.1 42.7 100 Estimated Population 2012 14,880 42,100 9,612 100,870 167462 2020 20,480 42,100 13,612 127,844 204036 2030 20,480 42,100 79,896 106,243 248719 Estimated Population Growth 2012-20 5,600 0 4,000 26,974 36,574 2020-30 0 0 66,284 -21,601 44,683 2012-30 5,600 0 70,284 5,373 81,257 Gauff Ingenieure 3-14 Greater Harare Water and Sanitation Investment Plan Appendix 3.3 Epworth 3.5 Comparison to Expected Level of Growth Respective figures for expected population growth by housing types (Table 3-3) as compared to potential opportunities for growth (Table 3-2) are summarised in Table 3-4. Essentially, all remaining opportunities within the existing wards will be taken up by 2020 for all housing categories. For the subsequent interval to 2030 all growth (44,683 people) will occur in the adjacent areas to the south, and it will all be informal in nature. However this will be accompanied by substantial conversion of existing informal settlements to HD settlements within Wards 1 to 7. Table 3-4: Estimated Population Growth Versus Identified Growth Opportunities Type LD MD HD INFORMAL Total Estimated Population Growth 2012-20 5,600 0 4,000 26,974 36,574 2020-30 0 0 66,284 -21,601 44,683 2012-30 5,600 0 70,284 5,373 81,257 Potential for Expansion 2012-30 5,600 0 4,000 27,000 36,600 3.6 Future Ward Populations For the purpose of calculating future ward populations, for LD residents the potential growth of 400 stands in Ward 4 and 400 stands in Ward 6 were assumed to all be taken up by 2020, together with the uptake of the remaining 400 HD stands in Ward 3. Additional informal growth is projected for Wards 1, 4 and 6 to 2020, and to the south during the period 2020-30, and this will be accompanied by partial conversion of informal to formal HD housing within Wards 1-7, again during the period 2020-30. The resulting predicted ward populations are shown in Tables 3-5 and, in Table 3-6, these are broken down by housing types. Gauff Ingenieure 3-15 Greater Harare Water and Sanitation Investment Plan Appendix 3.3 Epworth Table 3-5: Estimated Future Ward Populations WARD TYPE 2012 2020 2030 1 LD and INF 31,537 34,037 34,037 2 MD and INF 14,941 14,941 14,941 3 MD and HD and INF 16,020 20,020 20,020 4 LD and INF 23,320 42,594 42,594 5 MD and INF 16,273 16,273 16,273 6 LD and MD and INF 25,819 36,619 36,619 7 MD and INF 39,552 39,552 39,552 GOR 23/24 INF - - 44,683 TOTAL 167,462 204,036 248,719 Gauff Ingenieure 3-16 Greater Harare Water and Sanitation Investment Plan Appendix 3.2 Chitungwiza Table 3-6: Estimated Future Ward Populations by Residential Types WARD 2012 2012 2012 2012 2012 2020 2020 2020 2012 2020 2030 2030 2030 2030 2030 LD MD HD INF TOTAL LD MD HD INF TOTAL LD MD HD INF TOTAL 1 7,884 - - 23,653 31,537 7,884 - - 26,153 34,037 7,884 - 13,077 13,076 34,037 2 - 13,447 - 1,494 14,941 - 13,447 - 1,494 14,941 - 13,447 1,494 - 14,941 3 - 4,806 9,612 1,602 16,020 - 4,806 13,612 1,602 20,020 - 4,806 15,214 - 20,020 4 6,996 - - 16,324 23,320 9,796 - - 32,798 42,594 9,796 16,399 16,399 42,594 5 - 14,646 - 1,627 16,273 - 14,646 - 1,627 16,273 - 14,646 1,627 - 16,273 6 - 1,291 - 24,528 25,819 2,800 1,291 - 32,528 36,619 2,800 1,291 16,264 16,264 36,619 7 - 7,910 - 31,642 39,552 - 7,910 - 31,642 39,552 - 7,910 15,821 15,821 39,552 GOR 23/24 - - - - - - - - - - - - - 44,683 44,683 TOTAL 14,880 42,100 9,612 100,870 167,462 20,480 42,100 13,612 127,844 204,036 20,480 42,100 79,896 106,243 248,719 Gauff Ingenieure 3-17 Greater Harare Water and Sanitation Strategic Plan Investment Plan Report Greater Harare Water and Sanitation Investment Plan APPENDIX 3.4: DETAILED DEMOGRAPHIC PROFILE REPORT – NORTON Gauff Ingenieure Greater Harare Water and Sanitation Investment Plan Appendix 3.4 Norton GREATER HARARE WATER AND SANITATION STRATEGIC PLAN GREATER HARARE WATER AND SANITATION INVESTMENT PLAN APPENDIX 3.4: DETAILED DEMOGRAPHIC REPORT NORTON Table of Contents 1 INTRODUCTION............................................................................................................................... 1-2 2 PAST, PRESENT AND FUTURE POPULATIONS ............................................................................ 2-3 2.1 HISTORICAL POPULATION DATA ..................................................................................................... 2-3 2.2 FUTURE POPULATION GROWTH ..................................................................................................... 2-4 2.3 NORTON FUTURE POPULATION ..................................................................................................... 2-6 3 URBAN PLANNING.......................................................................................................................... 3-8 3.1 OVERVIEW .................................................................................................................................. 3-8 3.2 MASTER PLAN ........................................................................................................................... 3-11 3.3 OPPORTUNITIES FOR GROWTH .................................................................................................... 3-11 3.4 FUTURE DEMAND BY HOUSING TYPES .......................................................................................... 3-14 3.5 COMPARISON TO EXPECTED LEVEL OF GROWTH ........................................................................... 3-14 3.6 FUTURE W ARD POPULATIONS ..................................................................................................... 3-15 Index of Tables Table 2-1: Population Data for Greater Harare from 1969 to 2012 (Source: ZIMSTAT) .............................. 2-3 Table 2-2: Inter Census Annual Growth Rates for Greater Harare ............................................................. 2-4 Table 2-3: Comparative Annual Growth Rates for 87 Southern and East African Cities.............................. 2-5 Table 2-4: Projected Annual Growth Rates for six Urban Centres Included in the UWSSRP ...................... 2-5 Table 2-5: Projected Future Annual Growth Rates for Greater Harare ....................................................... 2-6 Table 2-6: Projected Annual Populations for Norton 2012-2030 ................................................................. 2-6 Table 3-1: Summary of Wards................................................................................................................. 3-10 Table 3-2: Opportunities for Residential Expansion ................................................................................. 3-11 Table 3-3: Estimated Future Populations by Residential Types................................................................ 3-14 Table 3-4: Estimated Population Growth Versus Identified Growth Opportunities..................................... 3-15 Table 3-5: Estimated Future Ward Populations ....................................................................................... 3-16 Table 3-6: Estimated Future Ward Populations by Residential Types ...................................................... 3-17 Index of Figures Figure 2-1: Norton Population Growth from 1982 to 2012 .......................................................................... 2-4 Figure 3-1: Norton Ward Map with Housing Categories ............................................................................. 3-9 Figure 3-2: Norton Future Town Development Map ................................................................................. 3-13 Gauff Ingenieure 1-1 Greater Harare Water and Sanitation Investment Plan Appendix 3.4 Norton 1 INTRODUCTION Norton is a small town situated some 45 km to the west of Harare along the main road to Bulawayo. With a population of 67,591 in 2012, it was the 12 largest centre in Zimbabwe, after Harare, Bulawayo, Chitungwiza, Mutare, Epworth, Gweru, Kwekwe, Kadoma, Masvingo, Chinhoyi and Marondera. Norton started out as a railway siding, later (1914) developing into a small village surrounded by productive agricultural land. During the early years of the Federal Period (1953-1963) the government decided to develop an industrial area at Norton with provision for heavy industrial sites with rail access, to cater for the overflow of industry from Harare. The town was planned to accommodate 8,500 low density residents and 25,000 high density residents, to be constructed according to demand. The first company to set up in Norton was Harold Poole Ltd. (later Rio Tinto) which started production in 1952. Another of the early industries was Rhodesia Pulp and Paper Industry (later Hunyani Pulp and Paper Industry). Despite ample supply of water from Lake Chivero and electricity from Kariba, it never developed as expected and only a few factories were initially established. However, during the subsequent UDI era (1965-1980) there was a renewal of interest and considerable development took place; including the establishment of Central African Batteries, Cone Textiles and Dandy sweets. Developments continued after independence in 1980, and in May 1994 Norton was upgraded from a Town Board to a Town Council. This coincided with the establishment of BHP, a foreign conglomerate with interest in platinum mining and which injected new life into the town in the form of demand for residential properties and jobs. Between 1995 and 1997 Norton was a beehive of activity but then towards the end of 1998 BHP suddenly closed. This dealt a major blow to the business climate in the town. During the 2000s, in line with the nationwide economic downturn, Norton suffered a further collapse of industrial activity, and most industries remain closed today. Despite shrinking employment opportunities over the last decade, the town population has continued to grow relatively rapidly, primarily through providing a cheaper alternative for residential development to Harare. Regardless of the current depressed situation, Norton retains the necessary ingredients for successful industrial development, in the form of ample land, serviced industrial stands, a good communications (road and rail) network, and centrality and proximity to a large urban market in Harare. Current constraints include inadequate water supply and treatment of waste water, erratic power supplies, and the continuing gloomy macroeconomic conditions. Gauff Ingenieure 1-2 Greater Harare Water and Sanitation Investment Plan Appendix 3.4 Norton 2 PAST, PRESENT AND FUTURE POPULATIONS 2.1 Historical Population Data Norton has grown in terms of population from 12,438 in 1982, to 67,591 people in 2012 (Table 2-1, Figure 2-1). Corresponding annual rates of population growth for the respective census intervals are shown in Table 2-2. For the country as a whole there has been a dramatic decline in annual growth rates over the last 20 years, from over 3% for the period 1969 to 1992, to just over 1% for the last 20 years from 1992 to 2012. Likely causes of this marked decline include the impacts of HIV and the national economic collapse during the 2000s leading to high levels of out-migration. Table 2-1: Population Data for Greater Harare from 1969 to 2012 (Source: ZIMSTAT) Year 1969 1982 1992 2002 2012 Harare urban* 364,390 658,364 1,148,073 1,458,807 1,708,538 Chitungwiza 14,970 172,000 274,912 323,260 356,840 Epworth 62,630 114,067 167,462 Norton 12,438 29,000 44,397 67,591 Ruwa 1,447 23,681 56,333 Total Greater Harare 379,360 842,802 1,516,062 1,964,212 2,356,764 ZIMBABWE 5,134,300 7,608,432 10,412,548 11,631,657 12,973,808 Total as % of Zimbabwe 7.4 11.1 14.6 16.9 18.2 * Note that the Harare population figures from 1992 onwards include Harare South (Ward 1), and for 2012 also includes populations from six adjacent wards amounting to a total of 109,708 people. Figure 2-1 below shows the population growth in Norton from 1969 to 2012. (Source: ZIMSTAT). 80 Thousands 70 60 50 40 30 20 10 0 1982 1992 2002 2012 Gauff Ingenieure 2-3 Greater Harare Water and Sanitation Investment Plan Appendix 3.4 Norton Figure 2-1: Norton Population Growth from 1982 to 2012 Table 2-2 below shows mean inter census annual population growth rates for Greater Harare from 1969 to 2012. (Source: ZIMSTAT). Table 2-2: Inter Census Annual Growth Rates for Greater Harare Period 1969-82 1982-92 1992-02 2002-12 Harare urban 4.66% 5.72% 2.42% 1.59% Chitungwiza 20.66% 4.80% 1.63% 0.99% Epworth 6.18% 3.91% Norton 8.83% 4.35% 4.29% Ruwa 32.25% 9.05% Total Greater Harare 6.33% 6.05% 2.62% 1.84% ZIMBABWE 3.07% 3.19% 1.11% 1.10% Whilst growth in Norton has slowed from a mean annual rate of 8.83% for the period 1982- 92, for the last twenty years the rate of growth has been maintained at above 4% per annum. This has resulted in the population more than doubling over the same period from 29,000 in 1992 to 67,591 in 2012. 2.2 Future Population Growth Future population growth rates for Greater Harare were estimated through consideration of historical rates of growth (Table 2-2); comparison to regional data (Table 2-3); comparison to estimated growth rates for towns included under the associated Urgent Water Supply and Sanitation Rehabilitation Project (UWSSRP), (Table 2-4); and through discussions with the respective urban authorities. Data on population growth was obtained from 87 urban centres (>25,000 people) in seven comparable Southern and East African countries for which data was available (Namibia, Botswana, Mozambique, Zambia, Malawi, Tanzania, Kenya), as recorded over their most recent census interval (variously 1997-2007 to 2002-2012). For all 87 towns the overall range of annual growth rates over the last decade was -0.03% to 6.97% with a mean value of 3.23% (Table 3-3). The data further suggests that growth is strongest in the largest cities (> 1 million inhabitants = 3.94%) and slightly lower in smaller centres (3.1% for centres smaller than 250,000 people). Table 2-3 shows comparative annual growth rates for 87 Southern and East African urban areas (>25,000 people) over their respective most recent census intervals (from 1997-2007 to 2002-2012). Gauff Ingenieure 2-4 Greater Harare Water and Sanitation Investment Plan Appendix 3.4 Norton Table 2-3: Comparative Annual Growth Rates for 87 Southern and East African Cities Population Number Range (%) Median (%) Mean (%) > 1 Million 4 1.25 - 5.78 4.36 3.94 500,000 - 1Million 5 2.79 - 4.69 4.06 3.88 250,000-500,000 12 0.83 - 7.16 3.39 3.47 100,000-250,000 32 0.38 - 6.55 2.71 3.08 25,000-100,000 34 -0.03 - 6.97 3.14 3.11 Total 87 -0.03 - 7.16 3.32 3.23 Under the UWSSRP future population growth rates for the six project towns (Chegutu, Masvingo, Kwekwe, Mutare, Chitungwiza and Harare urban) were examined and debated at a combined workshop held in Harare on 09 July 2013. A key outcome of the workshop was to estimate future annual rates of population growth to 2020 and 2030 for each of the project centres, based on the specific conditions pertaining to each of the centres. Table 2-4 shows the projected annual growth rates for the medium (2012-2020) and long term (2020-2030) for the six UWSSRP project towns. (Source: Workshop, Harare, 09 July 2013). Table 2-4: Projected Annual Growth Rates for six Urban Centres Included in the UWSSRP Annual Growth Rate (%) Period 2002-2012 2012-2020 2020-2030 Chegutu 1.39 4 2 Masvingo 2.45 3 1.5-2 Kwekwe 0.71 3 4 Mutare 1.00 3 4 Chitungwiza 0.93 1.1 2 Harare 0.23 4 4 The resulting estimates varied between 1.1-4% for the period 2012-2020 and from 2-4% for the subsequent interval from 2020-2030. Based on these deliberations, and particularly with respect to the continuing difficult macroeconomic outlook, the overall future rate of growth for Greater Harare for the period 2012-2020 was estimated at 2%, this being slightly higher than the figure of 1.84% as obtained for the previous census interval. Consistent with this overall figure, the growth rates of the individual urban centres for the period 2012-2020 were generally maintained at the same levels as for 2002-2012, other than for Epworth and Harare urban (Table 2-5). For Epworth, due to restricted opportunities for expansion, the rate of growth is expected to decline from 3.91% to 2.50%. For Harare urban, it was assumed that the relatively restricted opportunities for growth in Chitungwiza and Epworth would be compensated for by marginally higher rates of growth here, such that the future growth was forecast to increase from the previous figure of 1.59% for 2002-2012 to that of 1.75% for 2012-2020. Gauff Ingenieure 2-5 Greater Harare Water and Sanitation Investment Plan Appendix 3.4 Norton Table 2-5: Projected Future Annual Growth Rates for Greater Harare Annual Growth Rate (%) Period 2002-2012 2012-2020 2020-2025 2025-2030 Harare urban 1.59 1.75 4.00 5.00 Chitungwiza 0.99 0.99 2.00 4.00 Epworth 3.91 2.50 2.00 2.00 Norton 4.29 4.29 4.00 5.00 Ruwa 9.05 9.05 4.00 5.00 Total Greater Harare 1.84 2.00 3.59 4.68 Population growth for Greater Harare is projected to escalate markedly after 2020, to 3.59% for the period 2020-2025 and increasing to 4.68% for the subsequent interval to 2030. Corresponding projections for the individual urban centres of Harare urban, Norton and Ruwa are 4% to 2025 and 5% to 2030. Estimates for Epworth are markedly lower (2% and 2%) again due to space constraints, and also for Chitungwiza (2% and 4%), on the basis that the targeted area of expansion on the Nyatsime farms is further away from the city centre than much of Harare urban, such that development in this area is likely to be slower until such time as the closer areas are beginning to reach capacity. 2.3 Norton Future Population For the purpose of estimating future populations for Norton the above proposed annual growth rates of 4.29% to 2020, 4.0% to 2025 and 5.0% to 2030 were used. Resulting annual population estimates are shown in Table 2-6. These figures suggest population increases from 67,591 (2012) to 94,606 in 2020 and 146,903 in 2030. This implies total population increases of 27,015 people for the interval 2012-2020, of 52,297 people for the period 2020-2030, and overall from 2012-2030 of 79,312 people. Table 2-6 shows the estimated annual and cumulative population increases for the period 2012-2030, based on projected annual growth rates of 4.29% for the mid-term (2012-2020) and thereafter increasing to 4% to 2025 and 5% to 2030. Table 2-6: Projected Annual Populations for Norton 2012-2030 Year Annual Growth Estimated Cumulative Population Rate (%) Population Increase 2012 4.29 67,591 2013 4.29 70,492 2,901 2014 4.29 73,518 5,927 2015 4.29 76,674 9,083 2016 4.29 79,966 12,375 2017 4.29 83,398 15,807 2018 4.29 86,978 19,387 2019 4.29 90,712 23,121 Gauff Ingenieure 2-6 Greater Harare Water and Sanitation Investment Plan Appendix 3.4 Norton Year Annual Growth Estimated Cumulative Population Rate (%) Population Increase 2020 4.29 94,606 27,015 2021 4 98,390 30,799 2022 4 102,325 34,734 2023 4 106,418 38,827 2024 4 110,675 43,084 2025 4 115,102 47,511 2026 5 120,857 53,266 2027 5 126,900 59,309 2028 5 133,245 65,654 2029 5 139,907 72,316 2030 5 146,903 79,312 Gauff Ingenieure 2-7 Greater Harare Water and Sanitation Investment Plan Appendix 3.4 Norton 3 URBAN PLANNING 3.1 Overview Norton is a small town situated some 45 km to the west Harare, alongside the main road and railway lines to Gweru and Bulawayo. Unlike the other component entities Norton is not contiguous with the remainder of Greater Harare; it is included here as it forms part of the common water supply system receiving treated water from the Morton Jaffray WTW at Lake Chivero (some 7 km to the east of the Norton). Norton covers an area of 6,005 ha or 60 km2. With a 2012 population of 67,591 Norton accounted for just 2.9% of the overall population of Greater Harare. The town is bounded to the north by Lake Manyame and to the south by the Gweru road, although small parts of Wards 2 and 4 extend just to the south of this road. The town is also split by the railway line, which divides Ward 4 to the south of the line from the remainder of the town to the north. The town is surrounded by productive farming land, to the west, south and east forming part of Chegutu District (Wards 14 and 15), whilst the land to the north of Lake Manyame comprises part of Ward 25 of Zwimba District. The town comprises of a CBD, industrial area and a mix of low and high density residential housing. There is little in the way of medium density housing and informal settlements are absent. Norton is divided into thirteen wards (Figure 3-1). Gauff Ingenieure 3-8 244000 246000 248000 250000 252000 254000 256000 258000 260000 Lake 0D Q\DPH Figure 3-1 Ward Map with Housing Categories 8026000 8026000 Norton ± 8024000 8024000 Tankatara Datum WGS 84 1:55,000 Ward 6 HD Ward 1 LD Damofalls Ward 13 Twinlakes Ward 2 HD Ngoni LD 8022000 8022000 Ward 5 Johannesburg Galloway Ward 7 HD Marshlands HD Ward 8 Ward 9 HD Ward 3 Maridale HD LD Nharira Katanga Ward 12 HD Ward 10 Katanga Phase 1+2 HD Ward 11 HD 8020000 8020000 Knowe Norton Industrial Legend Streams Ward 4 Council Boundary LD Wards Lake 8018000 8018000 Landuse Agriculture Tankatara, Esmeralda, DaLsy Business/Commercial 25.56 km.sq 2030 Industrial Park Residential 8016000 8016000 Expansion Areas Greater Harare Water and Sanitation Investment Plan 8014000 8014000 0 0.5 1 2 3 4 Kilometers 244000 246000 248000 250000 252000 254000 256000 258000 260000 Greater Harare Water and Sanitation Investment Plan Appendix 3.4 Norton The CBD is situated with Ward 1, which comprises an irregular strip stretching between the Gweru road to the south and Lake Manyame to the north, and is bounded to the south by the primary access road off the Gweru road. Ward 1 also includes LD residential areas and a substantial portion of heavy industrial stands. The industrial area occupies a strip of land that extends to either side of a branch railway line, from the northern portion of Ward 4 to the south, through Ward 3 to Ward 1 in the north. Many of the former industries are currently closed and within the designated area there is considerable scope for future infill. LD residential areas are currently confined to Wards 1, 2, 3 (between the Gweru road and Lake Manyame to the north and east of the town) and Ward 4 (situated to the south and occupying the portion between the railway line and the Gweru road). Collectively, these four wards cover about two thirds of the overall area of Norton. Wards 1 and 3 are virtually fully developed; Ward 4 is roughly half developed, whilst development in Ward 2 (to the east) is just beginning. Additional LD development is planned for Wards 6 and 13. Although previously zoned for HD housing, it has been decided to reallocate the northern portions of these wards that are closest to Lake Manyame to LD rather than HD housing, in an effort to reduce potential pollution of the lake by waste waters. Wards 5 to 13 cover a contiguous portion of land situated to the west of the town between the railway line and Lake Manyame. These wards are all dominated by HD housing. Initial development of HD housing occurred in Wards 6 to 11. Most of this portion is fully developed (Wards 5, 7, 8, 9 and 10), although in Ward 11 there is place for limited expansion. Future expansion in Ward 6 is anticipated to comprise LD rather than HD housing. The HD developments in Wards 12 and 13, to the west, are more recent and ongoing. A summary of the wards is shown in Table 3-1. Table 3-1: Summary of Wards Ward Location Area (ha) Population Land Use / Proportion of No. 2012 Housing housing stands Category developed (%) 1 Centre 763.50 8,107 CBD, Industry, LD 95 2 East 895.67 4,804 LD 10 3 Centre 414.88 7,874 Industry, LD 100 4 South 1,930.62 7,463 Industry, LD 45 5 Centre 57.30 8,954 HD 100 6 Centre 638.47 5,454 HD 45 7 Centre 24.79 7,324 HD 100 8 Centre 36.49 6,188 HD 100 9 Centre 38.13 7,947 HD 100 10 Centre 82.24 3,379 HD 100 Gauff Ingenieure 3-10 Greater Harare Water and Sanitation Investment Plan Appendix 3.4 Norton 11 Centre 144.19 10,052 HD 60 12 West 395.48 13,744 HD 70 13 West 583.95 2,905 HD 45 Total 6,005.71 67,591 3.2 Master Plan Norton has a master plan that was produced in the early 1990s. Although outdated, the town is still following the general vision articulated in the plan. The main difference is the rezoning of parts of Wards 6 and 13 to accommodate LD rather than HD housing. The existing wards appear to offer adequate opportunity for LD expansion, whilst the potential for future HD development is more constrained. The existing allocation for industry appears adequate to cater for demand through to 2030. The most logical direction of expansion for HD housing would be to continue to the west of Wards 12 and 13 (i.e. to the north of the railway line). Apparently this is not possible and, instead, the town envisages expanding into the portion to the south of the railway line and to the west of Ward 4, within what is now Ward 14 of Chegutu District. Linked to this, the Town Council is already in the process of negotiating access to land for development of a site for disposal of solid waste within this portion of Chegutu. The below analysis of future supply and demand of different types of residential housing to 2030, suggest that the projected demand for LD housing can be satisfied within the existing wards, and for HD housing to 2020, but thereafter most of the envisaged HD expansion from 2020-2030 will need to be accommodated elsewhere outside of the existing wards (i.e. within Chegutu District). 3.3 Opportunities for Growth Eight areas of possible expansion were identified within the extent of the current 13 wards of Norton, five for LD housing and three for HD housing (Table 3-2, Figure 3-2). Collectively, there is opportunity for development of an additional 2,691 LD stands and 2,198 HD stands. For the purpose of converting numbers of stands to numbers of people the following conversions have been applied: for HD 10 people per stand and for MD and LD each seven people per stand. Thus there is opportunity to accommodate a further 18,837 LD and 21,980 HD residents. For each area an indication of the anticipated timing of development (before or after 2020) is also provided. Table 3-2: Opportunities for Residential Expansion Map Ward Type Stands Population Year ID A 1 LD 26 182 2020 B 2 LD 750 5,250 2020/30 C 4 LD 1,315 9,205 2020/30 D 6 LD 400 2,800 2020/30 E 13 LD 200 1,400 2030 Gauff Ingenieure 3-11 Greater Harare Water and Sanitation Investment Plan Appendix 3.4 Norton Subtotal LD 2,691 18,837 F 11 HD 400 4,000 2020 G 12 HD 750 7,500 2020 H 13 HD 1,048 10,480 2020/30 Subtotal HD 2,198 21,980 Gauff Ingenieure 3-12 244000 246000 248000 250000 252000 254000 256000 258000 260000 Lake 0D Figure 3-2 Q\DPH Future Town Development Map Norton 8026000 8026000 ± 8024000 8024000 Tankatara Datum WGS 84 1:55,000 Ward 6 HD Ward 1 LD Damofalls Ward 13 Twinlakes Ward 2 HD Ngoni LD 8022000 8022000 Ward 5 Johannesburg Galloway Ward 7 HD Marshlands HD Ward 8 Ward 9 HD Ward 3 Maridale HD LD Nharira Katanga Ward 12 HD Ward 10 Katanga Phase 1+2 HD Ward 11 HD Legend 8020000 8020000 Knowe Streams Norton Industrial Council Boundary Wards Ward 4 Lake LD Main Residential 8018000 8018000 Landuse Agriculture Tankatara, Esmeralda, DaLVy Business/Commercial 25.56 km.sq 2030 Industrial Park Residential 8016000 8016000 Expansion Areas Greater Harare Water and Sanitation Investment Plan 8014000 8014000 0 0.5 1 2 3 4 Kilometers 244000 246000 248000 250000 252000 254000 256000 258000 260000 Greater Harare Water and Sanitation Investment Plan Appendix 3.4 Norton 3.4 Future Demand by Housing Types The distribution of population in 2012 by housing types was 23.8% LD and 76.2% HD – there were no MD housing or informal settlements. In the absence of any current plans to introduce any MD housing or informal growth, for the purpose of calculating future demand for different types of housing, it was assumed that future proportions of housing types will be maintained to 2030 at the same values of 23.8% LD and 76.2% HD. Using these figures, the future estimated populations for LD and HD residents for the years 2020 and 2030 are shown in Table 3-3. This suggests that the LD population will grow from 16,112 in 2012 by 6,440 people, to give a 2020 population of 22,552, and by a further 12,467 people to give a 2030 population of 35,019. Similarly, HD residents are expected to grow from 51,479 in 2012, by 20,575 people to give a 2020 population of 72,054, and by an additional 39,830 people to give a 2030 population of 111,884. Table 3-3: Estimated Future Populations by Residential Types Type LD MD HD INFORMAL Total Estimated Proportion (%) 2012 23.8 0 76.2 0 100 2020 23.8 0 76.2 0 100 2030 23.8 0 76.2 0 100 Estimated Population 2012 16,112 0 51,479 0 67,591 2020 22,552 0 72,054 0 94,606 2030 35,019 0 111,884 0 146,903 Estimated Population Growth 2012-20 6,440 0 20,575 0 27,015 2020-30 12,467 0 39,830 0 52,297 2012-30 18,907 0 60,405 0 79,312 3.5 Comparison to Expected Level of Growth Respective figures for expected population growth by housing types (Table 3-3) as compared to potential opportunities for growth (Table 3-2) are summarised in Table 3-4. For LD housing, the existing wards appear to offer a total growth opportunity of 18,837 people (or 2,691 stands), and this should be just sufficient to cater for the total expected growth to 2030, which is projected to amount to 18,907 people or 2,701 stands. For HD housing, the expected growth of 20,575 people (2,056 stands) will virtually exhaust the estimated growth opportunities within Wards 11, 12 and 13, which amount to a total of 2,198 stands or 21,980 people. For the subsequent period from 2020 to 2030 it is therefore assumed that the anticipated HD growth of 39,830 people (3,983 stands) will need to be accommodated outside of the existing town boundary, presumably within what is now Ward 14 of Chegutu District. Gauff Ingenieure 3-14 Greater Harare Water and Sanitation Investment Plan Appendix 3.4 Norton These figures imply a need to service nearly 3,000 new stands by 2020 or a mean of 375 per annum, and from 2020-30 another 5,765 stands or about 576 per annum. Table 3-4: Estimated Population Growth Versus Identified Growth Opportunities Type LD MD HD INFORMAL Total Estimated Population Growth 2012-20 6,440 0 20,575 0 27,015 2020-30 12,467 0 39,830 0 52,297 2012-30 18,907 0 60,405 0 79,312 Potential for Expansion 2012-30 18,837 0 21,980 0 40,817 3.6 Future Ward Populations For the purpose of calculating future ward populations, for LD residents the minor growth of 26 LD stands in Ward 1 was assumed to be taken up by 2020, and the remainder of the growth was split between Wards 2, 4 and 6, roughly in proportion to opportunities, to 2020 and to 2030. For HD populations the 400 HD stands in Ward 11 and 750 HD stands in Ward 12 were assumed to be fully developed by 2020, with the balance of demand being accommodated in Ward 13. For the subsequent interval to 2030 it is assumed that all growth occurs in what is now Chegutu District. The resulting predicted ward populations are shown in Tables 3-5 and, in Table 3-6, these are broken down by housing types. Gauff Ingenieure 3-15 Greater Harare Water and Sanitation Investment Plan Appendix 3.4 Norton Table 3-5: Estimated Future Ward Populations WARD TYPE 2012 2020 2030 1 LD 4,630 4,812 4,812 2 LD 535 2,285 5,785 3 LD 3,169 3,169 3,169 4 LD 7,778 11,278 16,983 5 HD 2,522 2,522 2,522 6 HD 2,350 3,358 5,220 7 HD 4,256 4,256 4,256 8 HD 3,809 3,809 3,809 9 HD 3,735 3,735 3,735 10 HD 3,455 3,455 3,455 11 HD 5,438 9,438 9,438 12 HD 17,836 25,334 25,336 13 HD 8,078 17,155 18,558 Chegutu 14 HD - - 39,825 TOTAL 67,591 94,606 146,903 Gauff Ingenieure 3-16 Greater Harare Water and Sanitation Investment Plan Appendix 3.2 Norton Table 3-6: Estimated Future Ward Populations by Residential Types WARD 2012 2012 2012 2012 2012 2020 2020 2020 2012 2020 2030 2030 2030 2030 2030 LD MD HD INF TOTAL LD MD HD INF TOTAL LD MD HD INF TOTAL 1 4,630 - - - 4,630 4,812 - - - 4,812 4,812 - - - 4,812 2 535 - - - 535 2,285 - - - 2,285 5,785 - - - 5,785 3 3,169 - - - 3,169 3,169 - - - 3,169 3,169 - - - 3,169 4 7,778 - - - 7,778 11,278 - - - 11,278 16,983 - - - 16,983 5 - - 2,522 - 2,522 - - 2,522 - 2,522 - - 2,522 - 2,522 6 - - 2,350 - 2,350 1,008 - 2,350 - 3,358 2,870 - 2,350 - 5,220 7 - - 4,256 - 4,256 - - 4,256 - 4,256 - - 4,256 - 4,256 8 - - 3,809 - 3,809 - - 3,809 - 3,809 - - 3,809 - 3,809 9 - - 3,735 - 3,735 - - 3,735 - 3,735 - - 3,735 - 3,735 10 - - 3,455 - 3,455 - - 3,455 - 3,455 - - 3,455 - 3,455 11 - - 5,438 - 5,438 - - 9,438 - 9,438 - - 9,438 - 9,438 12 - - 17,836 - 17,836 - - 25,334 - 25,334 - - 25,336 - 25,336 13 - - 8,078 - 8,078 - - 17,155 - 17,155 1,400 - 17,158 - 18,558 Chegutu 14 - - - - - - - - - - - - 39,825 - 39,825 TOTAL 16,112 - 51,479 - 67,591 22,552 - 72,054 - 94,606 35,019 - 111,884 - 146,903 Gauff Ingenieure 3-17 Greater Harare Water and Sanitation Strategic Plan Investment Plan Report Greater Harare Water and Sanitation Investment Plan APPENDIX 3.5: DETAILED DEMOGRAPHIC PROFILE REPORT – RUWA Gauff Ingenieure Greater Harare Water and Sanitation Investment Plan Appendix 3.5 Ruwa GREATER HARARE WATER AND SANITATION STRATEGIC PLAN GREATER HARARE WATER AND SANITATION INVESTMENT PLAN APPENDIX 3.5: DETAILED DEMOGRAPHIC REPORT RUWA Table of Contents 1 INTRODUCTION............................................................................................................................... 1-2 2 PAST, PRESENT AND FUTURE POPULATIONS ............................................................................ 2-3 2.1 HISTORICAL POPULATION DATA ..................................................................................................... 2-3 2.2 FUTURE POPULATION GROWTH ..................................................................................................... 2-4 2.3 RUWA FUTURE POPULATION ......................................................................................................... 2-6 3 URBAN PLANNING.......................................................................................................................... 3-8 3.1 OVERVIEW .................................................................................................................................. 3-8 3.2 MASTER PLAN ........................................................................................................................... 3-10 3.3 OPPORTUNITIES FOR GROWTH .................................................................................................... 3-10 3.4 FUTURE DEMAND BY HOUSING TYPES .......................................................................................... 3-13 3.5 COMPARISON TO EXPECTED LEVEL OF GROWTH ........................................................................... 3-13 3.6 FUTURE W ARD POPULATIONS ..................................................................................................... 3-14 Index of Tables Table 2-1: Population Data for Greater Harare from 1969 to 2012 (Source: ZIMSTAT) .............................. 2-3 Table 2-2: Inter Census Annual Growth Rates for Greater Harare ............................................................. 2-4 Table 2-3: Comparative Annual Growth Rates for 87 Southern and East African Cities.............................. 2-4 Table 2-4: Projected Annual Growth Rates for six Urban Centres Included in the UWSSRP ...................... 2-5 Table 2-5: Projected Future Annual Growth Rates for Greater Harare ....................................................... 2-6 Table 2-6: Projected Annual Populations for Ruwa 2012-2030 .................................................................. 2-7 Table 3-1: Summary of Wards................................................................................................................. 3-10 Table 3-2: Opportunities for Residential Expansion ................................................................................. 3-11 Table 3-3: Estimated Future Populations by Residential Types................................................................ 3-13 Table 3-4: Estimated Population Growth Versus Identified Growth Opportunities..................................... 3-14 Table 3-5: Estimated Future Ward Populations ....................................................................................... 3-15 Table 3-6: Estimated Future Ward Populations by Residential Types ...................................................... 3-16 Index of Figures Figure 2-1: Ruwa Population Growth from 1992 to 2012............................................................................ 2-3 Figure 3-1: Ruwa Ward Map with Housing Categories............................................................................... 3-9 Figure 3-2: Ruwa Future Town Development Map................................................................................... 3-12 Gauff Ingenieure 1-1 Greater Harare Water and Sanitation Investment Plan Appendix 3.5 Ruwa 1 INTRODUCTION Ruwa is a small town located immediately east of Harare along the Mutare road. With a population of 56,333 in 2012, Ruwa accounted for 2.4% of the overall population of Greater Harare, and was the 13th largest urban centre in Zimbabwe, behind Harare, Bulawayo, Chitungwiza, Mutare, Epworth, Gweru, Kwekwe, Kadoma, Masvingo, Chinhoyi, Marondera and Norton. Ruwa was initially established as a Growth Point in 1986 with the intention of taking pressure off Harare for industrial expansion. Initially the government played a leading role in promoting investments in the growth point, primarily in the form of provision of utilities which were instrumental in luring private sector industrial developments. For example, the construction of a trunk sewer to serve both the industrial and the high density residential areas and the building of a pump station effectively reduced the cost of industrial investment. A number of early developments were associated with influential personalities such as the former First Lady, Mrs. Sally Mugabe, who was the patron of the Ruwa Rehabilitation Centre, and this political patronage also played an important role during the initial stages of the development of Ruwa. The Ruwa Local Board was established in 1990. Against the background of austerity measures introduced under ESAP during the 1990s and its sequel the Zimbabwe Programme for Economic and Structural Transformation (ZIMPREST), the Local Board found itself unable to provide adequate infrastructure due to shortages of plant and equipment, financial resources and manpower. In response, the Board increasingly pursued a strategy of encouraging private developers to bridge the gap created by its own inability to provide infrastructure attractive for investment, in the form of private-public sector partnerships. This policy coupled with the attraction of a relatively less congested and pollution free environment resulted in a good number of industries locating in Ruwa. At its peak Ruwa had about 100 industrial establishments, employing close to 10,000 people mainly in agro- based industries. The development of this industrial base was accompanied by massive demand for housing and associated services. The greatest beneficiaries of this have been private landowners who subdivided and later sold stands at a profit. While the local authority draws levies and rates on developed properties, such developments tend to put pressure on its resources as demand for water, sewer and solid waste disposal services increases. Residential growth continued into the 2000s, particularly in the northern sector with the development of ZIMRE Park. However, consistent with the nationwide economic decline, and exacerbated by persistent water problems, many industries have either relocated to Harare or closed down. Gauff Ingenieure 1-2 Greater Harare Water and Sanitation Investment Plan Appendix 3.5 Ruwa 2 PAST, PRESENT AND FUTURE POPULATIONS 2.1 Historical Population Data Census data for Ruwa is only available from 1992 onwards. Ruwa has grown in terms of population from 1,447 in 1992, to 56,333 people in 2012 (Table 2-1, Figure 2-1). Corresponding annual rates of population growth for the respective census intervals are shown in Table 2-2. For the country as a whole there has been a dramatic decline in annual growth rates over the last 20 years, from over 3% for the period 1969 to 1992, to just over 1% for the last 20 years from 1992 to 2012. Likely causes of this marked decline include the impacts of HIV and the national economic collapse during the 2000s leading to high levels of out-migration. Table 2-1: Population Data for Greater Harare from 1969 to 2012 (Source: ZIMSTAT) Year 1969 1982 1992 2002 2012 Harare urban 364,390 658,364 1,148,073 1,458,807 1,708,538 Chitungwiza 14,970 172,000 274,912 323,260 356,840 Epworth 62,630 114,067 167,462 Norton 12,438 29,000 44,397 67,591 Ruwa 1,447 23,681 56,333 Total Greater Harare 379,360 842,802 1,516,062 1,964,212 2,356,764 ZIMBABWE 5,134,300 7,608,432 10,412,548 11,631,657 12,973,808 Total as % of Zimbabwe 7.4 11.1 14.6 16.9 18.2 * Note that the Harare population figures from 1992 onwards include Harare South (Ward 1), and for 2012 also includes populations from six adjacent wards amounting to a total of 109,708 people. Figure 2-1 below shows the population growth in Ruwa from 1992 to 2012. (Source: ZIMSTAT). 60 Thousands 50 40 30 20 10 0 1992 2002 2012 Figure 2-1: Ruwa Population Growth from 1992 to 2012 Gauff Ingenieure 2-3 Greater Harare Water and Sanitation Investment Plan Appendix 3.5 Ruwa Table 2-2 below shows mean inter census annual population growth rates for Greater Harare from 1969 to 2012. (Source: ZIMSTAT). Table 2-2: Inter Census Annual Growth Rates for Greater Harare Period 1969-82 1982-92 1992-02 2002-12 Harare urban 4.66% 5.72% 2.42% 1.59% Chitungwiza 20.66% 4.80% 1.63% 0.99% Epworth 6.18% 3.91% Norton 8.83% 4.35% 4.29% Ruwa 32.25% 9.05% Total Greater Harare 6.33% 6.05% 2.62% 1.84% ZIMBABWE 3.07% 3.19% 1.11% 1.10% Over the last 20 years Ruwa has shown by far the highest rates of growth within Greater Harare, registering 32.25% for the period 1992 to 2002 and 9.05% for the subsequent census interval from 2002-2012. This has resulted in the population more than doubling even during the last decade from 23,681 in 2002 to 56,333 in 2012. 2.2 Future Population Growth Future population growth rates for Greater Harare were estimated through consideration of historical rates of growth (Table 2-2); comparison to regional data (Table 2-3); comparison to estimated growth rates for towns included under the associated Urgent Water Supply and Sanitation Rehabilitation Project (UWSSRP), (Table 2-4); and through discussions with the respective urban authorities. Data on population growth was obtained from 87 urban centres (>25,000 people) in seven comparable Southern and East African countries for which data was available (Namibia, Botswana, Mozambique, Zambia, Malawi, Tanzania, Kenya), as recorded over their most recent census interval (variously 1997-2007 to 2002-2012). For all 87 towns the overall range of annual growth rates over the last decade was -0.03% to 6.97% with a mean value of 3.23% (Table 2-3). The data further suggests that growth is strongest in the largest cities (> 1 million inhabitants = 3.94%) and slightly lower in smaller centres (3.1% for centres smaller than 250,000 people). Table 2-3 shows comparative annual growth rates for 87 Southern and East African urban areas (>25,000 people) over their respective most recent census intervals (from 1997-2007 to 2002-2012). Table 2-3: Comparative Annual Growth Rates for 87 Southern and East African Cities Population Number Range (%) Median (%) Mean (%) > 1 Million 4 1.25% - 5.78% 4.36% 3.94% 500,000 - 1Million 5 2.79% - 4.69% 4.06% 3.88% 250,000-500,000 12 0.83% - 7.16% 3.39% 3.47% 100,000-250,000 32 0.38% - 6.55% 2.71% 3.08% Gauff Ingenieure 2-4 Greater Harare Water and Sanitation Investment Plan Appendix 3.5 Ruwa 25,000-100,000 34 -0.03% - 6.97% 3.14% 3.11% Total 87 -0.03 - 7.16% 3.32% 3.23% Under the UWSSRP future population growth rates for the six project towns (Chegutu, Masvingo, Kwekwe, Mutare, Chitungwiza and Harare urban) were examined and debated at a combined workshop held in Harare on 09 July 2013. A key outcome of the workshop was to estimate future annual rates of population growth to 2020 and 2030 for each of the project centres, based on the specific conditions pertaining to each of the centres. Table 2-4 shows the projected annual growth rates for the medium (2012-2020) and long term (2020-2030) for the six UWSSRP project towns. (Source: Workshop, Harare, 09 July 2013). Table 2-4: Projected Annual Growth Rates for six Urban Centres Included in the UWSSRP Annual Growth Rate (%) Period 2002-2012 2012-2020 2020-2030 Chegutu 1.39% 4% 2% Masvingo 2.45% 3% 1.5-2% Kwekwe 0.71% 3% 4% Mutare 1.00% 3% 4% Chitungwiza 0.93% 1.1% 2% Harare 0.23% 4% 4% The resulting estimates varied between 1.1-4% for the period 2012-2020 and from 2-4% for the subsequent interval from 2020-2030. Based on these deliberations, and particularly with respect to the continuing difficult macroeconomic outlook, the overall future rate of growth for Greater Harare for the period 2012-2020 was estimated at 2%, this being slightly higher than the figure of 1.84% as obtained for the previous census interval. Consistent with this overall figure, the growth rates of the individual urban centres for the period 2012-2020 have been maintained at the same levels as for 2002-2012, other than for Epworth and Harare urban (Table 2-5). For Epworth, due to restricted opportunities for expansion, the rate of growth is expected to decline from 3.91% to 2.50%. For Harare urban, it was assumed that the relatively restricted opportunities for growth in Chitungwiza and Epworth would be compensated for by marginally higher rates of growth here, such that the future growth was forecast to increase from the previous figure of 1.59% for 2002-2012 to that of 1.75% for 2012-2020. Gauff Ingenieure 2-5 Greater Harare Water and Sanitation Investment Plan Appendix 3.5 Ruwa Table 2-5: Projected Future Annual Growth Rates for Greater Harare Annual Growth Rate (%) Period 2002-2012 2012-2020 2020-2025 2025-2030 Harare urban 1.59% 1.75% 4.00% 5.00% Chitungwiza 0.99% 0.99% 2.00% 4.00% Epworth 3.91% 2.50% 2.00% 2.00% Norton 4.29% 4.29% 4.00% 5.00% Ruwa 9.05% 9.05% 4.00% 5.00% Total Greater Harare 1.84% 2.00% 3.59% 4.68% Population growth for Greater Harare is projected to escalate markedly after 2020, to 3.59% for the period 2020-2025 and increasing to 4.68% for the subsequent interval to 2030. Corresponding projections for the individual urban centres of Harare urban, Norton and Ruwa are 4% to 2025 and 5% to 2030. Estimates for Epworth are markedly lower (2% and 2%) again due to space constraints, and also for Chitungwiza (2% and 4%), on the basis that the targeted area of expansion on the Nyatsime farms is further away from the city centre than much of Harare urban, such that development in this area is likely to be slower until such time as the closer areas are beginning to reach capacity. 2.3 Ruwa Future Population For the purpose of estimating future populations for Ruwa the above proposed annual growth rates of 9.05% to 2020, 4.0% to 2025 and 5.0% to 2030 were used. Resulting annual population estimates are shown in Table 2-6. These figures suggest population increases from 56,333 (2012) to 112,682 in 2020 and 174,971 in 2030. This implies total population increases of 56,349 people for the interval 2012-2020, of 62,289 people for the period 2020-2030, and overall from 2012-2030 of 118,638 people. Table 2-6 shows the estimated annual and cumulative population increases for the period 2012-2030, based on projected annual growth rates of 4.29% for the mid-term (2012-2020) and thereafter increasing to 4% to 2025 and 5% to 2030. Gauff Ingenieure 2-6 Greater Harare Water and Sanitation Investment Plan Appendix 3.5 Ruwa Table 2-6: Projected Annual Populations for Ruwa 2012-2030 Year Annual Growth Rate (%) Estimated Population Cumulative Population Increase 2012 9.05 56,333 2013 9.05 61,433 5,100 2014 9.05 66,994 10,661 2015 9.05 73,059 16,726 2016 9.05 79,672 23,339 2017 9.05 86,885 30,552 2018 9.05 94,750 38,417 2019 9.05 103,328 46,995 2020 9.05 112,682 56,349 2021 4 117,189 60,856 2022 4 121,876 65,543 2023 4 126,752 70,419 2024 4 131,822 75,489 2025 4 137,094 80,761 2026 5 143,949 87,616 2027 5 151,147 94,814 2028 5 158,704 102,371 2029 5 166,639 110,306 2030 5 174,971 118,638 Gauff Ingenieure 2-7 Greater Harare Water and Sanitation Investment Plan Appendix 3.5 Ruwa 3 URBAN PLANNING 3.1 Overview Ruwa is situated immediately to the east of Harare and is contiguous with both Harare (Tafara/Mabvuku - Wards 20 and 21) and Epworth (Wards 4 and 6). To the north, east and south Ruwa is surrounded by productive agricultural land included under Wards 24 and 25 of Goromonzi District. Ruwa covers an area of 4,187 ha or 40 km2. The town is split in half by the Harare-Mutare road and railway that in this portion run parallel and immediately adjacent to one another. The town is divided into nine wards (Figure 3-1). Wards 1 to 7 are situated to the south of the road/railway and Wards 8 and 9 to the north. The most prominent natural feature is the Ruwa River which flows from east to west through Ward 9 to the north of the Marondera road, and then turns abruptly to the south where it forms the boundary between Ruwa and Epworth, subsequently continuing downstream to join the Manyame River immediately upstream of Prince Edward Dam. Ruwa includes a mix of low (LD), medium (MD) and high density (HD) housing, and there is also a substantial industrial area. Land has been reserved for construction of a town centre, but this has yet to be realized. Currently, there is no informal settlement. Low and medium density housing is confined to Wards 7, 8 and 9. These three wards cover roughly 85% of the overall extent of Ruwa. Ward 7 is dominated by LD housing, whilst Wards 8 and 9 comprise a mix of LD and MD housing, and Ward 9 also includes a substantial HD portion. The remaining Wards 1 to 6 comprise a contiguous portion of HD development extending as an irregular strip to the south of the Harare-Marondera road. The industrial area is located in the northeastern corner of Ward 7, immediately to the south of the Marondera road and railway. Part of the northeastern portion of Ward 9 has also been reserved for heavy industry, but has not yet been developed. A summary of the wards is shown in Table 3-1. Wards 7, 8 and 9 appear to offer potential for expansion of LD and MD housing. Ward 7 has considerable space for expansion, and 660 LD stands have already been planned and surveyed. However, other parties are motivating for the remaining area to be reallocated for HD rather than LD housing. The outcome remains unclear although it seems likely that the 660 LD stands will go ahead. Opportunities within Ward 8 are relatively limited, such that the major LD expansion is likely to occur within Ward 9. For HD housing the main opportunities for future growth appear to be within Wards 5, 7 and 9, plus limited growth in Wards 1 and 2. Wards 3, 4 and 6 are already fully developed. Gauff Ingenieure 3-8 308000 .000000 309500 .000000 311000.000000 312500 .000000 314000 .000000 315500 .000000 317000 .000000 318500 .000000 8025500.000000 8025500.000000 Figure 3-1 Ward Map with Housing Categories Ruwa ± Secondary Tara Township Primary Sebastopol Secondary 8024000.000000 8024000.000000 Zimre School Zimre Secondary Primary School Ward 8 School Lot 1 Of MD Inverangus Zimre Hunters Scale 1:17,500 Park Rest Datum : WGS 84 Zone 36S Ward 9 Cheringoma LD MD HD Chipukutu Rem Ext. Rem Of SD A Of Chito Of Of SD C Of Sebastopol Sebastopol 8022500.000000 8022500.000000 Caledonia, Lot 2 A Of Sebastolpol, Inverneil Romany, Clovadeal Fresnes York Glamis Fairview Legend Residential 8021000.000000 8021000.000000 Lot A Trunk/Primary Roads Of Oakes Primary Sch Rail Line School Ednora Ward 1 Ground HD Thornicraft Park School River / Stream Lot 1 Of Cranbrook Lakes Ward 3 HD Category Sebassa Ward 7 National LD Rehabiliation HD Ward 4 HD Ward 2 HD LD 8019500.000000 8019500.000000 Boulders Estates MD Hofmoor Mixed (LD MD HD) Eatate Ward 6 HD H Of Project Boundary Galway Boulder Expansion Areas Egondini, Mapumula Ward 5 PT Of HD Keymer 8018000.000000 8018000.000000 Farm Greater Harare Dagbreek Water and Sanitation Investment Plan 8016500.000000 8016500.000000 0 0.5 1 2 Kilometers 308000 .000000 309500 .000000 311000.000000 312500 .000000 314000 .000000 315500 .000000 317000 .000000 318500 .000000 Greater Harare Water and Sanitation Investment Plan Appendix 3.5 Ruwa Table 3-1: Summary of Wards Ward Location Area (ha) Population Land Use / Housing Proportion of No. 2012 Category housing stands developed (%) 1 Southeast 98.67 6,518 HD 75% 2 Southeast 170.25 5,373 HD 75% 3 Southeast 40.77 3,731 HD 100% 4 Southeast 24.39 2,368 HD 100% 5 Southeast 293.60 2,329 HD 15% 6 Southeast 55.63 2,896 HD 100% 7 Southwest 1,392.37 4,493 LD 15% 8 Northwest 611.93 13,695 LD (60%), MD (40%) 90% 9 Northeast 1,499.41 14,930 LD (15%), MD (15%) HD 33% (70%) Total 4,187.02 56,333 3.2 Master Plan Ruwa has a dated master plan (not seen during the course of this study) but which still encapsulates the vision for future development of the town. This plan envisages the incorporation of additional land and associated expansion to the northeast (Ward 9 Extension - Tarisa, Sebastopol, Romany, Clovadael B and Liddesdale Farms of Goromonzi Ward 25); to the southeast (Ward 5 Extension – Galway Estate) and to the south (Ward 7 Extension - Dagbreek, Mariandi and Mandalay Farms of Goromonzi Ward 24). The below analysis of future supply and demand of different types of residential housing to 2030, suggest that the projected demand for MD housing can be satisfied within the existing wards, but for LD and HD housing some of the envisaged expansion will need to be accommodated within the adjacent areas, particularly for the interval from 2020-2030. 3.3 Opportunities for Growth Nine areas of possible expansion were identified within the extent of the current 9 wards of Ruwa, three for LD housing (Wards 7, 8 and 9), one for MD (Ward 9) and five for HD (Wards 1, 2, 5, 7 and 9) (Table 3-2, Figure 3-2). Collectively, there is opportunity for development of an additional 1,320 LD stands, 2,000 MD stands and 5,400 HD stands. For the purpose of converting numbers of stands to numbers of people the following conversions have been applied: for HD 10 people per stand and for MD and LD each seven people per stand. Thus there is opportunity to accommodate a further 9,240 LD, 14,000 MD and 54,000 HD residents. For each area an indication of the anticipated timing of development (before or after 2020) is also provided. Gauff Ingenieure 3-10 Greater Harare Water and Sanitation Investment Plan Appendix 3.5 Ruwa Table 3-2: Opportunities for Residential Expansion Map Ward Type Stands Population Year ID A 7 LD 660 4,620 2020 B 8 LD 180 1,260 2020 C 9 LD 480 3,360 2020 Subtotal LD 1,320 9,240 D 9 MD 2,000 14,000 2020/30 Subtotal MD 2,000 14,000 E 1 HD 200 2,000 2020 F 2 HD 200 2,000 2020 G 5 HD 1,200 12,000 2020/30 H 7 HD 2,500 25,000 2020/30 I 9 HD 1,300 13,000 2020/30 Subtotal HD 5,400 54,000 Additional expansion is expected to occur in the neighbouring areas to the northeast (Ward 9 Extension, LD and HD, situated to the north of the Marondera road and the east of Ward 9 on Tarisa, Sebastopol, Romany, Clovadael and Liddesdale Farms); to the east on Galway Estates (Ward 5 Extension, HD), and to the south on Dagbreek Farm (Ward 7 Extension, HD). Gauff Ingenieure 3-11 308000 .000000 309000 .000000 310000 .000000 311000.000000 312000 .000000 313000 .000000 314000 .000000 315000 .000000 316000 .000000 317000 .000000 318000 .000000 319000 .000000 Figure 3-2 Future Town Development Map 8025000.000000 8025000.000000 Ruwa ± Secondary Tara Township Primary Sebastopol Secondary 8024000.000000 8024000.000000 Zimre School Zimre Primary Secondary School School Ward 8 Lot 1 Of Inverangus Park MD Zimre Hunters Dutam : WGS 84 Zone 36S Rest Scale 1:17,500 Chipukutu Ward 9 Cheringoma 8023000.000000 8023000.000000 LD MD HD Rem Ext. Of Chito Of Rem Of SD A Sebastopol Of SD C Of Sebastopol Legend 8022000.000000 8022000.000000 Caledonia, Lot 2 A Of Inverneil Sebastolpol, Expansion Areas Romany, Clovadeal Fresnes York Ward No. Landuse Glamis Agriculture Fairview Commercial 8021000.000000 8021000.000000 Grasslands/Pastures Lot A Of Oakes Industrial Primary School Sch Ednora Institutional Ward 1 Ground HD Thornicraft Park School Mining/Quarrying Lot 1 Of Cranbrook Park/Playground And Other Recreational Spaces Ward 3 Proposed Development/Expansion Areas 8020000.000000 8020000.000000 HD Sebassa Ward 7 National Residential LD Rehabiliation Ward 4 HD Ward 2 Residential HD Trunk/Primary Roads Boulders Estates Project Boundary Hofmoor Rail Line Eatate Ward 6 8019000.000000 8019000.000000 HD H Of River / Stream Galway Lakes Boulder Egondini, Mapumula Ward 5 PT Of HD Keymer 8018000.000000 8018000.000000 Farm Greater Harare Water and Sanitation Dagbreek Investment Plan 8017000.000000 8017000.000000 0 0.5 1 2 Kilometers 8016000.000000 8016000.000000 308000 .000000 309000 .000000 310000 .000000 311000.000000 312000 .000000 313000 .000000 314000 .000000 315000 .000000 316000 .000000 317000 .000000 318000 .000000 319000 .000000 Greater Harare Water and Sanitation Investment Plan Appendix 3.5 Ruwa 3.4 Future Demand by Housing Types The distribution of population in 2012 by housing types was 26.5% LD, 13.7% MD and 59.8% HD – there were no informal settlements. The combined proportion of LD and MD housing (40.2%) is considerably higher than that of the other urban entities of Greater Harare or of the other project towns covered under the UWSSRP (range is 2.9% for Chitungwiza to 34% for Epworth). Moreover, LD and MD account for only one third of the total identified opportunities for future expansion in Ruwa. As such the combined proportion of LD and MD housing is expected to gradually decrease from 40.2% in 2012, to 35% in 2020 and 30% in 2030. The balance is expected to be taken up by HD housing, which is projected to rise in proportion from 59.8% in 2012, to 65% in 2020, and to 70% in 2030. No development of informal settlement is envisaged. Using these figures, the future estimated populations broken down by housing types for the years 2020 and 2030 are shown in Table 3-3. This suggests that the LD population will grow from 14,950 in 2012 by 10,967 people, to give a 2020 population of 25,917, and by a further 9,077 people to give a 2030 population of 34,994. Similarly, MD residents are expected to grow from 7,718 in 2012, by 5,804 people to give a 2020 population of 13,522, and by an additional 3,976 people to give a 2030 population of 17,498. The major growth will be in terms of HD, in which case the HD population is expected to increase from 33,665 in 2012 to 73,243 in 2020 to 122,479 in 2030, the corresponding levels of growth being 39,578 from 2012-2020 and by 49,235 from 2020-2030. Table 3-3: Estimated Future Populations by Residential Types Type LD MD HD INF Total Estimated Proportion (%) 2012 26.5 13.7 59.8 0 100 2020 23.0 12.0 65.0 0 100 2030 20.0 10.0 70.0 0 100 Estimated Population 2012 14,950 7,718 33,665 0 56,333 2020 25,917 13,522 73,243 0 112,682 2030 34,994 17,498 122,479 0 174,970 Estimated Population Growth 2012-20 10,967 5,804 39,578 0 56,349 2020-30 9,077 3,976 49,235 0 62,288 2012-30 20,044 9,780 88,813 0 118,637 3.5 Comparison to Expected Level of Growth Respective figures for expected population growth by housing types (Table 3-3) as compared to potential opportunities for growth (Table 3-2) are summarised in Table 3-4. For LD housing, the existing wards appear to offer a total growth opportunity of 9,240 people as compared to an estimated demand to 2020 of 10,967 people and to 2030 of Gauff Ingenieure 3-13 Greater Harare Water and Sanitation Investment Plan Appendix 3.5 Ruwa 20,044 people. The balance of the anticipated growth is expected to occur in Ward 9 Extension. For MD the projected development in Ward 9 of 2,000 MD stands (14,000 people) should be more than sufficient to cater for the expected MD growth through to 2030 (9,780 people). For HD housing, the expected growth of 39,578 people to 2020 could feasibly be accommodated within the existing wards, although some growth is forecast to also occur within Ward 9 extension during this period. For the subsequent interval from 2020 to 2030 it is expected that HD growth will occur in Wards 5, 7 and 9, and in the adjacent areas of Ward 5 Extension, Ward 7 Extension and Ward 9. These figures imply a need to service about 6,350 new stands by 2020 or a mean of 795 per annum, and from 2020-30 another 6,800 stands or about 680 per annum. Table 3-4: Estimated Population Growth Versus Identified Growth Opportunities Type LD MD HD INF Total Estimated Population Growth 2012-20 10,967 5,804 39,578 0 56,349 2020-30 9,077 3,976 49,235 0 62,288 2012-30 20,044 9,780 88,813 0 118,637 Potential for Expansion 2012-30 9,240 14,000 54,000 0 77,240 3.6 Future Ward Populations For LD housing, it is assumed that all existing opportunities within Wards 7 (660 stands, 4,620 people), 8 (180 stands, 1,260 people) and 9 (480 stands 3,360 people) are developed by 2020, with the balance of the expected population (1,727 people, 247 stands) being absorbed in Ward 9 extension. For the subsequent interval to 2030 it is assumed that all LD growth will occur in Ward 9 extension (9,077 people, 1,297 stands). For MD housing the identified opportunities within Ward 9 (2,000 stands, 14,000 people) appears adequate to cater for envisaged growth to 2030 (9,780 people or 1,398 stands). For HD populations to 2012 it is expected that development will occur in Wards 1 and 2 (200 stands, 2,000 people each), Ward 5 (800 stands, 8,000 people), Ward 7 (958 stands, 9,578 people), Ward 9 (1,000 stands, 10,000 people) and Ward 9 extension (800 stands, 8,000 people). For the subsequent interval to 2030 growth is predicted to occur in Ward 5 (400 stands, 4,000 people), Ward 7 (2,000 stands, 20,000 people), Ward 9 (300 stands, 3,000 people), Ward 5 Extension (600 stands, 6,000 people), Ward 9 extension (800 stands, 8,000 people) and with the balance of 8,235 people or 824 stands being constructed on Dagbreek (Ward 7 Extension). The resulting predicted ward populations are shown in Tables 3-5 and, in Table 3-6, these are broken down by housing types. Gauff Ingenieure 3-14 Greater Harare Water and Sanitation Investment Plan Appendix 3.5 Ruwa Table 3-5: Estimated Future Ward Populations WARD TYPE 2012 2020 2030 1 HD 6,518 8,518 8,518 2 HD 5,373 7,373 7,373 3 HD 3,731 3,731 3,731 4 HD 2,368 2,368 2,368 5 HD 2,329 10,329 14,329 6 HD 2,896 2,896 2,896 7 LD 4,493 18,691 38,691 8 LDMD 13,695 14,955 14,955 9 LD/MD/HD 14,930 34,094 41,070 Ext 5 HD 6,000 Ext 7 HD 8,235 Ext 9 LD/HD 9,727 26,804 TOTAL 56,333 112,682 174,970 Gauff Ingenieure 3-15 Greater Harare Water and Sanitation Investment Plan Appendix 3.5 Ruwa Table 3-6: Estimated Future Ward Populations by Residential Types WARD 2012 2012 2012 2012 2012 2020 2020 2020 2012 2020 2030 2030 2030 2030 2030 LD MD HD INF TOTAL LD MD HD INF TOTAL LD MD HD INF TOTAL 1 - - 6,518 - 6,518 - - 8,518 - 8,518 - - 8,518 - 8,518 2 - - 5,373 - 5,373 - - 7,373 - 7,373 - - 7,373 - 7,373 3 - - 3,731 - 3,731 - - 3,731 - 3,731 - - 3,731 - 3,731 4 - - 2,368 - 2,368 - - 2,368 - 2,368 - - 2,368 - 2,368 5 - - 2,329 - 2,329 - - 10,329 - 10,329 - - 14,329 - 14,329 6 - - 2,896 - 2,896 - - 2,896 - 2,896 - - 2,896 - 2,896 7 4,493 - - - 4,493 9,113 - 9,578 - 18,691 9,113 - 29,578 - 38,691 8 8,217 5,478 - - 13,695 9,477 5,478 - - 14,955 9,477 5,478 - - 14,955 9 2,240 2,240 10,450 - 14,930 5,600 8,044 20,450 - 34,094 5,600 12,020 23,450 - 41,070 Ext 5 - - - - - - - - - - - - 6,000 - 6,000 Ext 7 - - - - - - - - - - - - 8,235 - 8,235 Ext 9 - - - - - 1,727 - 8,000 - 9,727 10,804 - 16,000 - 26,804 TOTAL 14,950 7,718 33,665 0 56,333 25,917 13,522 73,243 - 112,682 34,994 17,498 122,478 - 174,970 Gauff Ingenieure 3-16 Greater Harare Water and Sanitation Strategic Plan Investment Plan Report Greater Harare Water and Sanitation Investment Plan APPENDIX 3.6: POPULATION PROJECTIONS VALIDATION REPORT Gauff Ingenieure Greater Harare Water and Sanitation Strategic Plan Investment Plan Report Greater Harare Water and Sanitation Investment Plan APPENDIX 4: EXISTING WATER SUPPLY AND SEWERAGE SITUATION Gauff Ingenieure Greater Harare Water and Sanitation Strategic Plan Investment Plan Report Greater Harare Water and Sanitation Investment Plan APPENDIX 4.1: WATER AND SEWERAGE INFRASTRUCTURE ASSESSMENT REPORT - HARARE Gauff Ingenieure Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare GREATER HARARE WATER AND SANITATION STRATEGIC PLAN GREATER HARARE WATER AND SANITATION INVESTMENT PLAN APPENDIX 4.1: WATER AND SEWERAGE INFRASTRUCTURE ASSESSMENT REPORT HARARE Table of Contents 1 WATER SUPPLY ................................................................................................................................... 1-6 1.1 WATER SOURCES ............................................................................................................................. 1-8 1.1.1 Raw Water Intake ................................................................................................................... 1-9 1.1.2 Raw Water Transmission Mains and Pump Stations ........................................................... 1-10 1.2 WATER TREATMENT WORKS ........................................................................................................... 1-10 1.2.1 Morton Jaffray WTW ............................................................................................................. 1-11 1.2.2 Prince Edwards WTW........................................................................................................... 1-19 1.3 BOOSTER PUMP STATIONS .............................................................................................................. 1-22 1.3.1 Warren Control Pump Station ............................................................................................... 1-26 1.3.2 Alexandra Park Pump Station............................................................................................... 1-27 1.3.3 Highlands Lift Station ............................................................................................................ 1-29 1.3.4 Donnybrook Pump Station .................................................................................................... 1-30 1.3.5 Letombo Pump Station ......................................................................................................... 1-31 1.3.6 Orange Grove Pump Station ................................................................................................ 1-33 1.3.7 Green Dale Pump Station ..................................................................................................... 1-34 1.3.8 Crow Hill Pump Station ......................................................................................................... 1-35 1.3.9 Kuwadzana ........................................................................................................................... 1-36 1.3.10 Hogerty Hill Pump Station..................................................................................................... 1-37 1.3.11 Emerald Hill Pump Station. ................................................................................................... 1-38 1.3.12 Avondale Pump Station ........................................................................................................ 1-39 1.3.13 Bluff Hill Pump Station .......................................................................................................... 1-40 1.3.14 Marimba Park Pump Station ................................................................................................. 1-40 1.3.15 Waterfalls Pump Station ....................................................................................................... 1-41 1.3.16 Dzivaresekwa Pump Station ................................................................................................. 1-42 1.4 TREATED WATER TRANSMISSION SYSTEM ........................................................................................ 1-42 1.4.1 Water Supply Zones ............................................................................................................. 1-42 1.4.2 Proposed Resource Zones ................................................................................................... 1-50 1.4.3 Network Hydraulic Modelling ................................................................................................ 1-52 1.4.4 System description ............................................................................................................... 1-54 1.4.5 Condition Assessment .......................................................................................................... 1-55 Gauff Ingenieure I Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare 1.5 STORAGE RESERVOIRS ................................................................................................................... 1-60 1.5.1 Capacity assessment; Condition assessment; proposed investment measures ................. 1-60 1.5.2 Proposed investment measures ........................................................................................... 1-61 1.6 DISTRIBUTION NETWORK ................................................................................................................. 1-61 1.6.1 Gravity System ..................................................................................................................... 1-63 1.6.2 Pumped Areas ...................................................................................................................... 1-63 1.6.3 Pumped/ Gravity Areas......................................................................................................... 1-64 1.6.4 District Metering System ....................................................................................................... 1-64 1.6.5 Metered Supply Zones.......................................................................................................... 1-64 1.6.6 Independent Non-Monitored Areas ...................................................................................... 1-65 1.6.7 Areas outsidethe City Boundaries ........................................................................................ 1-66 1.7 PILOT ZONE INVESTIGATIONS........................................................................................................... 1-68 1.7.1 Methodology and Approach .................................................................................................. 1-68 1.7.2 Location and Characteristic of the Pilot Area ....................................................................... 1-69 1.7.3 Findings and Recommendations – Water Distribution Network ........................................... 1-72 2 SEWERAGE ......................................................................................................................................... 2-76 2.1 RETICULATION SYSTEM ................................................................................................................... 2-76 2.1.1 Description of catchment areas ............................................................................................ 2-76 2.1.2 System description ............................................................................................................... 2-77 2.1.3 Condition assessment .......................................................................................................... 2-82 2.1.4 Transmission Sewers Mains ................................................................................................. 2-86 2.2 SEWAGE PUMP STATIONS ............................................................................................................... 2-89 2.2.1 Avonlea Sewerage Pump Station ......................................................................................... 2-89 2.2.2 New Marlborough Sewerage Pump Station ......................................................................... 2-90 2.2.3 North East/Mount Pleasant Sewerage Pump Station ........................................................... 2-91 2.2.4 Borrowdale Brook Sewerage Pump Stations ....................................................................... 2-92 2.2.5 Donnybrook Sewerage Pump Stations ................................................................................. 2-94 2.2.6 Budiriro Sewerage Pump Station ......................................................................................... 2-95 2.2.7 New Chisipite Sewerage Pump Station ................................................................................ 2-96 2.2.8 Old Chisipite Sewerage Pump Station ................................................................................. 2-96 2.3 FIRLE WWTW ................................................................................................................................ 2-97 2.3.1 Description of Fire WWTW ................................................................................................... 2-97 2.3.2 Capacity Assessment of Firle Sewage Treatment Works .................................................... 2-98 2.3.3 Proposed Investment Measures for Firle WWTW .............................................................. 2-106 2.4 CROWBOROUGH WWTW .............................................................................................................. 2-112 2.4.1 Description of Crowborough WWTW .................................................................................. 2-112 2.4.2 Capacity Assessment of Crowborough Sewage Treatment Works.................................... 2-113 2.4.3 Proposed Investment Measures for Crowborough WWTW ............................................... 2-113 2.5 HATCLIFFWWTW ......................................................................................................................... 2-117 2.5.1 Description of Hatcliff WWTW ............................................................................................ 2-117 2.5.2 Proposed Investment Measures ......................................................................................... 2-118 2.6 MARLBOROUGH WWTW ............................................................................................................... 2-118 2.6.1 Description of Marlborough WWTW ................................................................................... 2-118 3 PROPOSED HARARE SOUTH SEWERAGE MEASURES.............................................................. 3-120 3.1 BACKGROUND ............................................................................................................................... 3-120 Gauff Ingenieure II Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare 3.2 EXISTING PLANS ........................................................................................................................... 3-120 3.3 PROPOSED COMBINED PLAN ......................................................................................................... 3-120 3.4 NEW HARARE SOUTH TRUNK SEWER ............................................................................................. 3-122 3.5 TREATING THE EXPANDED SEWAGE PRODUCTION .......................................................................... 3-126 3.5.1 Overview of Proposal.......................................................................................................... 3-126 3.5.2 Alternative Systems with Similar Outcomes ....................................................................... 3-128 3.6 LIFECYCLE COST CONSIDERATIONS ............................................................................................... 3-128 3.6.1 Method of Cash flow Preparation ....................................................................................... 3-129 3.7 CONCLUDING DISCUSSION ON PROPOSED OPTIONS ....................................................................... 3-136 4 ON-GOING WORKS .......................................................................................................................... 4-138 4.1 ZIM-FUND FINANCING .................................................................................................................... 4-138 4.1.1 On-going UWSSRP Water Projects ................................................................................... 4-138 4.1.2 On-going UWSSRP Sanitation Projects ............................................................................. 4-140 Index of Tables Table 1-1: Pumping Stations .................................................................................................................... 1-6 Table 1-2: Investment Measures for at Lake Chivero Intake ................................................................... 1-9 Table 1-3: Investment Measures for at Lake Manyame Intake................................................................ 1-9 Table 1-4: Investment Measures for Raw Water Transmission Mains and Pump Stations .................. 1-10 Table 1-5: Production amount of MJ-WTW............................................................................................ 1-18 Table 1-6: Consumption of chemicals at MJ-WTP (2012) ..................................................................... 1-18 Table 1-7: Condition Assessment of Morton Jaffray WTW .................................................................... 1-19 Table 1-8: Condition Assessment of Prince Edward WTW ................................................................... 1-21 Table 1-9: Greater Harare Booster Pump Stations................................................................................ 1-23 Table 1-10: Condition Pumps at Warren Pump Station ........................................................................... 1-26 Table 1-11: Proposed Investment Measures at Warren Pump Station ................................................... 1-27 Table 1-12: Condition Pumps at Warren Pump Station ........................................................................... 1-28 Table 1-13: Proposed Investment Measures at Alexandra Park Pump Station ...................................... 1-28 Table 1-14: Proposed Investment Measures at Highlands Lift Station.................................................... 1-29 Table 1-15: Proposed Investment Measures at Donnybrook Pump Station............................................ 1-31 Table 1-16: Condition Pumps at Letombo Pump Station......................................................................... 1-33 Table 1-17: Proposed Investment Measures at Letombo Pump Station ................................................. 1-33 Table 1-18: Condition Pumps at Orange Grove Pump Station ................................................................ 1-34 Table 1-19: Proposed Investment Measures at Orange Grove Pump Station ........................................ 1-34 Table 1-20: Condition Pumps at Green Dale Pump Station .................................................................... 1-35 Table 1-21: Proposed Investment Measures at Green Dale Pump Station............................................. 1-35 Table 1-22: Condition Pumps at Crow Hill Pump Station ........................................................................ 1-36 Table 1-23: Proposed Investment Measures at Crow Hill Pump Station ................................................. 1-36 Table 1-24: Condition Pumps at Kuwadzana Pump Station .................................................................... 1-37 Table 1-25: Proposed Investment Measures at Kuwadzana Pump Station ............................................ 1-37 Table 1-26: Condition Pumps at Hogerty Hill Pump Station .................................................................... 1-37 Table 1-27: Proposed Investment Measures at Hogerty Hill Pump Station ............................................ 1-38 Table 1-28: Condition Pumps at High Lift Pump Station ......................................................................... 1-38 Table 1-29: Condition Pumps at New Pump Station ............................................................................... 1-39 Table 1-30: Proposed Investment Measures at Emerald Hill Pump Station............................................ 1-39 Table 1-31: Condition Pumps at Avondale Pump Station........................................................................ 1-39 Table 1-32: Proposed Investment Measures at Avondale Pump Station ................................................ 1-39 Table 1-33: Condition Pumps at Marimba Pump Station......................................................................... 1-41 Table 1-34: Proposed Investment Measures at Marimba Pump Station ................................................. 1-41 Table 1-35: Condition Pumps at Waterfalls Pump Station....................................................................... 1-41 Table 1-36: Proposed Investment Measures at Waterfalls Pump Station ............................................... 1-41 Table 1-37: Zones and Service Reservoirs.............................................................................................. 1-42 Gauff Ingenieure III Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Table 1-38: Network Modelling Scenarios ............................................................................................... 1-52 Table 1-39: Water Transmission Investment Measures .......................................................................... 1-53 Table 1-40: Condition Assessment of the Water Transmission System.................................................. 1-57 Table 1-41: Treated Water Reservoir Sites in the System ...................................................................... 1-60 Table 1-42: Investment Measures for Reservoirs in Harare .................................................................... 1-61 Table 1-43: Existing Primary and Secondary Pipework........................................................................... 1-62 Table 1-44: Gravity Areas ........................................................................................................................ 1-63 Table 1-45: Existing Network Pipes ......................................................................................................... 1-68 Table 2-1: Systems Description in each Suburb in Firle Catchment Area............................................. 2-77 Table 2-2: Systems Description in each Suburb in Crowborough Catchment Area .............................. 2-80 Table 2-3: Systems Description in each Suburb in Budiriro Catchment Area ....................................... 2-81 Table 2-4: Systems Description in each Suburb in Marlborough Catchment Area ............................... 2-82 Table 2-5: Systems Description in each Suburb in Hatcliff Catchment Area......................................... 2-82 Table 2-6: Peak Hour Sewer Flow for Proposed Catchment Areas- Harare ......................................... 2-87 Table 2-7: Sewer Trunk Upgrade Measures .......................................................................................... 2-88 Table 2-8: Condition Pumps at Avonlea Sewer Pump Station .............................................................. 2-90 Table 2-9: Proposed Investment Measures at Letombo Pump Station ................................................. 2-90 Table 2-10: Condition Pumps at New Marlborough Sewer Pump Station ............................................... 2-91 Table 2-11: Proposed Investment Measures at New Marlborough Sewer Pump Station ....................... 2-91 Table 2-12: Condition Pumps at North East/Mount Pleasant Pump Station ........................................... 2-92 Table 2-13: Proposed Investment Measures at North East/Mount Pleasant Pump Station .................... 2-92 Table 2-14: Condition Pumps at Borrowdale Brooks Pump Stations ...................................................... 2-93 Table 2-15: Proposed Investment Measures at Borrowdale Brooks Pump Stations ............................... 2-94 Table 2-16: Proposed Investment Measures at Donnybrook Pump Stations .......................................... 2-95 Table 2-17: Proposed Investment Measures at Donnybrook Pump Stations .......................................... 2-96 Table 2-18: Waste Water Loading at Firle WWTW .................................................................................. 2-98 Table 2-19: Proposed Investment Measures ......................................................................................... 2-106 Table 2-20: Waste Water Loading at Crowborough WWTW ................................................................. 2-113 Table 2-21: Proposed Investment Measures for Crowborough WWTW ............................................... 2-113 Table 2-22: Proposed Investment Measures for New BNR Module ...................................................... 2-117 Table 2-23: Waste Water Loading at Hatcliff WWTW ............................................................................ 2-117 Table 2-24: Proposed Investment Measures for Hatcliff WWTW .......................................................... 2-118 Table 2-25: Waste Water Loading at Marlborough WWTW .................................................................. 2-118 Table 3-1: Proposed Trunk Sewer Flows and Sizing........................................................................... 3-124 Table 3-2: Selected Approach for Sewer Sizing .................................................................................. 3-125 Table 3-3: Advantages and Disadvantages of the Single WWTW Option........................................... 3-125 Table 3-4: Advantages and Disadvantages of Trickling Filter Alternative ........................................... 3-128 Table 3-5: Major Investments 2016 - 2020 by Options (US$ Millions) ................................................ 3-131 Table 3-6: Amortised Cash Flow2016-2020 by Options (US$ Millions) .............................................. 3-132 Table 3-7: Cash Flow Summary 2016 to 2030 .................................................................................... 3-134 Table 3-8: Base Prices and Selection of Bounds ................................................................................ 3-134 Table 3-9: Base Values and Bounds for Variables in Monte Carlo Simulation.................................... 3-135 Table 3-10: Summary of Results from Monte Carlo Simulation (Analysis 2016 to 2030) ..................... 3-135 Table 4-1: Works of UWSSRP on Water Supply System .................................................................... 4-138 Table 4-2: Works of UWSSRP on Wastewater System....................................................................... 4-140 Index of Figures Figure 1-1: Principle layout of the water system of Harare ....................................................................... 1-7 Figure 1-2: Layout of Water Supply Zones ............................................................................................. 1-49 Figure 1-3: Layout of Water Resource Zones for the Greater Harare .................................................... 1-51 Figure 1-4: Layout of Existing Bulk Water Supply System...................................................................... 1-59 Figure 1-5: Sequence of Activities in the Pilot Area ................................................................................ 1-69 Figure 1-6: Network Elements in the Pilot Area (Highfield)..................................................................... 1-70 Figure 1-7: Map of the Pilot Area (Water) ............................................................................................... 1-71 Figure 2-1: Layout of Existing Waste Water Supply System .................................................................. 2-85 Figure 2-2: Surged Sewer Mains Highlighted in Red .............................................................................. 2-87 Figure 3-1: Route for Proposed New Harare South Trunk Sewer ........................................................ 3-123 Gauff Ingenieure IV Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Figure 3-2: Schematic Layout of Proposed Treatment ......................................................................... 3-127 Gauff Ingenieure V Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare 1 WATER SUPPLY The water supply system of Harare consists of two water treatment works namely: Morton Jaffray Water Treatment Works located adjacent to the Harare - Bulawayo Highway about 40 km west of Harare and Prince Edward Water Treatment Works located approximately 22 km South of Harare. Morton Jaffray Water Treatment Works was constructed in three stages with the first module constructed in 1953, with an initial rated capacity of 162,000 m3/day followed by the second module in 1976 with a rated capacity of 227,000 m3/day. The third module was constructed in 1994 with a rated capacity of 227,000 m3/day. Therefore the total capacity of the Treatment Works is thus 616,000 m3/day. However, due to operational challenges,it has been reported that, the present combined output under the current mode of operation is limited to only 429,408 m3/day. Prince Edward Water Treatment Works was constructedin 1972.The Water Treatment Works has a reported maximum peak production capacity of approximately 90,000 m3/day. However, due to operational challenges,it has been reported that the works is currently doing 50,000 m3/day. The present water supply system of the City of Harare includes 16 treated water pumping stations. The pumping stations are described in the following paragraphs in detail. The capacity of the pumping stations ranges from 13,500 m3/hour (Warren Control) to 19 m3/h (Emerald Hill). Nine pumping stations pump directly into the distribution system and/or to reservoir sites. The remaining six pumping stations act as lift stations to supply water towers. The characteristic key data of the existing 16 pumping stations are summarized in Table 1.1 below. Table 1-1: Pumping Stations Ref. Pumping Function of Capacity(1) Head No. of Meter Year of Station PS Pumps Constr. (m3/d) (m) Device (nos.) (year) (BM/FM)(2) (a) Alexandra Park transmission 50,000 45 FM 1971 (b) Avondale transmission 325 55 not 1959 metered (c) Bluff Hill transmission 13,055 55 not 1960 metered (d) Crow hill transmission 9,160 37 not 1971-72 metered (e) Emerald Hill lift station 460 27 BM ? (f) Greendale lift station ? ? BM 1979-80 (g) Hatfield removed - - - - - (h) Hogert Hill transmission 3,260 30 not 1978-79 metered Gauff Ingenieure 1-6 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Ref. Pumping Function of Capacity(1) Head No. of Meter Year of Station PS Pumps Constr. (m3/d) (m) Device (nos.) (year) (BM/FM)(2) (j) Kwadzana transmission 4,750 90 FM 1995 (k) Letombo transmission 64,800 98 FM NA (l) Mabvuku lift station 1,700 22 BM 1955-56 (m) Marimba Park lift station NA NA BM NA (n) Orange Grove transmission 15,650 35 not 1969-70 metered (o) Pocket Hill lift station NA NA BM NA (p) Warren Control transmission 324,000 125 BM/FM NA (q) Waterfalls lift station NA NA not NA metered (1) The pumping station capacity is calculated assuming 24h-pumping and taking into consideration the available operating pumps (stand-by pumps are not considered) (2) BM = bulk meter; FM = flow meter *NA – Not Available To Borrowdale ND525 R Highlands To Epsilon Monavale & Kensington PS Reservoir Alexandra Park ND300 R Orange Grove ND450 Greendale To ND357 PS Alexander Main Dzivaresekwa R ND525 Northwest Main ND800 ND600 Belvedere North PS To Warren Letombo park area/ Mutiny ND975 Letombo Main R Reservoir ND750 To Ventersburg & Donny Brook Reservoir R PS Msasa Warren Control Centre Highfield main Sunningdale ND975 ND1000 ND750 ND750 PS = Pump Stattion To Seke Reservoir R = Reservoir Figure 1-1: Principle layout of the water system of Harare Gauff Ingenieure 1-7 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare 1.1 Water Sources Harare is supplied with raw water from the following reservoirs; Harava Dam, Seke Dam, Lake Chivero and Lake Manyame. Morton Jaffray WTW is supplied by Lake Chivero and Lake Manyame whilst Prince Edward WTW is supplied by Harava and Seke Dams. All the raw water dams are located in the Upper Manyame Catchment area, along the Manyame River. The following wastewater treatment works located upstream of Lake Chivero and Lake Manyame; Zengeza Sewage treatment Works, Donnybrook Stabilisation Ponds, Crowborough Sewage Treatment Works and Firle Sewage Treatment Works discharge treated effluent into the same river system. Due to the dilapidation of the above sewage works, raw sewage is currently being discharged into the Manyame River System. Capacity of Existing Sources Harare is supplied with raw water from Harava Dam, Seke Dam, Lake Chivero and Lake Manyame. Morton Jaffray WTW is supplied by Lake Chivero and Lake Manyame whilst Prince Edward WTW is supplied by Harava and Seke Dams. All the raw water dams are located in the Upper Manyame Catchment area, along the Manyame River. The total estimated 4% yield of the Chivero-Manyamewith allowance for upstream and downstream commitments is 159,376 Ml/year - approximately 436 Ml/day (Latest ZINWA assessment). Allowing for upstream commitments only, the 4% risk yield is 174,448 Ml/year (478 Ml/d). The 10% risk yield with upstream commitments only is estimated to be 231,117 Ml/year (478 Ml/d). The safe yield of the dams is clearly much lower than current average demand, let alone projected demand. This is risky for a large city such as Harare. There is need to develop water production facilities in other catchments. The two upstream dams, Harava and Seke with a combined capacity of 12.5 million m3, which is a relatively small storage capacity provide water for treatment at Prince Edward WTW. They are normally only used for water supply purposes after the rain season when the dams contain sufficient water of a reasonable quality. It is important to note that the Prince Edward WTW was intended as a peak load facility to be operated during the hot season. Morton Jaffray Water Treatment Works has three number intake works namely; the old intake tower (intake No.1) constructed in 1952 and draws water at five water levels; three being the City of Harare intakes and the other two an irrigation intake and the river outlet pipe respectively. Each of the COH intakes is connected to a common 1100 mm Ø water main which transports raw water to the distribution chamber at the head of the water treatment works. Another intake tower was constructed in 1976 in order to resolve the issue of abstraction levels in the old intake tower. Raw water from the intake works enters the treatment works from the northeast via a 3 m × 3 m tunnel. It is directed initially to a mixing chamber before being fed into the treatment works. The third supply is from Lake Manyame and is via a 3m x 3m rectangular 15.4 km long tunnel. The tunnel is approximately 45m into the ground at the works and raw water is pumped to a riser shaft. Gauff Ingenieure 1-8 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare 1.1.1 Raw Water Intake Raw water for Morton Jaffray Water Treatment Works is abstracted from three number intake works namely; • The old intake tower (intake No. 1) constructed in 1952 and draws water at five water levels; three being the City of Harare intakes and the other two an irrigation intake and the river outlet pipe respectively. The COH intakes are connected to a common 1100 mm diameter water main which transports raw water to the distribution chamber at the head of the water treatment works. • The new intake tower constructed in 1976 in order to resolve the issue of abstraction levels in the old intake tower. This discharges raw water into a mixing chamber via a 3 m × 3 m tunnel before it is fed into the treatment works. • The Lake Manyame 3m x 3m rectangular 15.4 km long tunnel. The tunnel is approximately 45m into the ground at the works and raw water is pumped to a riser shaft. The mechanical and electrical components of the above intake structures will need to be rehabilitated or replaced. Therefore, the investment measures for the raw water abstraction and transmission facilities shall be as shown in the figures below; Table 1-2: Investment Measures for at Lake Chivero Intake Immediate Medium Term (2020) Long Term (2020) Rehabilitation and maintenance of all Rehabilitation and maintenance of all lifting gear,butterfly valves, lifting gear, butterfly valves, actuators,desludging pumps and 3m x actuators,desludging pumps and 3m x 3m Penstocks, 3m Penstocks, Replacements of 1200 diameter Replacements of 1200 diameter 75mm 75mm mesh screens. mesh screens. Rehabilitation and maintenance of Rehabilitation and maintenance of 100KVA Transformer,LV switchboard, 100KVA Transformer,LV switchboard, intake building and replacement of intake building and replacement of small small power and lighting. power and lighting. Table 1-3: Investment Measures for at Lake Manyame Intake Immediate Medium Term (2020) Long Term (2020) Rehabilitation and maintenance of all Rehabilitation and maintenance of all lifting gear,butterfly valves including lifting gear,butterfly valves including actuators, desludging pumps (turbine actuators, desludging pumps (turbine type 10 KW) and forebay pumps type 10 KW) and forebay pumps (turbine (turbine type 10 KW). The works will type 10 KW). The works will also include also include rehabilitation of rehabilitation of penstocks, replacement penstocks, replacement of 1200 of 1200 diameter 75mm mesh screens diameter 75mm mesh screens and and replacement of 100KVA Transformer replacement of 100KVA Transformer and LV switchboard. The rehabilitation of and LV switchboard. The rehabilitation a small power and lighting, building and of a small power and lighting,building security fence, and desludging pumps and security fence, anddesludging and hoist, DN 150 in shaft 5. pumps and hoist, DN 150 in shaft 5. Gauff Ingenieure 1-9 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare 1.1.2 Raw Water Transmission Mains and Pump Stations The following table gives an outline of the proposed investment measures for raw water transmission mains and pump stations. Table 1-4: Investment Measures for Raw Water Transmission Mains and Pump Stations Immediate Medium Term (2020) Long Term (2020) Replacement and maintenance of DN Replacement and maintenance of DN 600, DN 1300, DN 1400 and DN 1400 600, DN 1300, DN 1400 and DN 1400 butterfly valves including actuators butterfly valves including actuators from from Lake Chivero,DN 1800 butterfly Lake Chivero,DN 1800 butterfly valves valves including actuators from Lake including actuators from Lake Manyame, Manyame,DN 1200 Needle valve,DN DN 1200 Needle valve, DN 900 butterfly 900 butterfly valve gear-operated valve gear-operated handle to Clr Nr 07 handle to Clr Nr 07 and valve actuator and valve actuator control switchboard; control switchboard; Replacement of valve chamber small Replacement of valve chamber small power and lighting, shaft hoist, 7.5 t,raw power and lighting, shaft hoist, 7.5 water pumps, Q=5,400, H=60m, t,raw water pumps, Q=5,400, H=60m, including control gear, DN 700 raw water including control gear,DN 700 raw pump suction and delivery gate and non- water pump suction and delivery gate return valves including actuators and and non-return valves including pressure gauges, actuators and pressure gauges, Replacement/Maintenance/Rehabilitation Replacement/Maintenance/Rehabilitati of air valves, raw water pump 3.3 kV on of air valves, raw water pump 3.3 starter switchboard, 3,3 kV starter kV starter switchboard, 3,3 kV starter consoles, and 3.3 kV starter panels, raw consoles, and 3.3 kV starter panels, water pump 380 LV switchboard, small raw water pump 380 LV switchboard, power and lighting, overhead wire rope small power and lighting, overhead hoist, 3t, dewatering pumps and wire rope hoist, 3t, dewatering pumps ventilation fan. and ventilation fan. 1.2 Water Treatment Works Harare Municipality operates two water treatment facilities namely: Morton Affray Water Treatment Works located adjacent to the Harare and Prince Edward Water Treatment Works located approximately 22 km South of Harare. They are conventional surface water treatment plants consisting of the process units illustrated in the sketch overleaf: Chemical Rapid mixing Flocculation Sedimentation dosing Rapid Sand Stabilization Filtration Gauff Ingenieure 1-10 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare 1.2.1 Morton Jaffray WTW Morton Jaffray Water Treatment Works (WTW) consists of three units namely; Unit 1 constructed in 1954 with a design capacity of 160,000 m3/day and fed from Lake Chivero by gravity, Unit 2 constructed in 1976 with a design capacity of 227,000 m3/day fed from both Lake Chivero and Lake Manyame by gravity, and Unit 3 constructed in 1994 with a design capacity of 227,000 m3/day and fed from both Lake Chivero and Lake Manyame by gravity. The total design capacity is therefore 614,000m3/day; however the estimated current total water production is reported to be around 500,000 m3/day to 550,000 m3/day. A: Unit 1 Chemical Storage, Preparation and Dosing Raw water is dosed with aluminium sulphate which is prepared in four concrete tanks equipped with a stirrer. These concrete tanks are badly corroded and refurbishment is greatly recommended preferably using an HDPE membrane liner. For pH adjustment, the water is dosed with lime slurry prepared from two circular steel tanks. The corresponding stirrers and dosing pumps need to be replaced. In order to reduce the organic matter content of the raw water, Powdered Activated Carbon (PAC) is also dosed and is prepared in two concrete tanks with stirrers which were recently been rehabilitated and new stirrers installed. However, dosing pumps and corresponding pipework does not exist. Sodium silicate is dosed as a flocculation aid after being prepared from two recently rehabilitated concrete tanks with new stirrers. Stirrers have not yet been commissioned. As part of the disinfection process, gaseous chlorine is dosed. The chlorination system for treated water disinfection was rehabilitated under the “UNICEF “project in 2009/2010. Two new chlorinators were installed. Clarifiers Clarifiers No. 1 and No. 2 are circular with separate upstream flocculation chambers equipped with flocculators for moderate mixing purposes and bottom scrapers for sludge removal. For both clarifiers, flocculators are not operational. The motors and stirrers would have to be replaced. The scraper bridge drives are not working, making sludge removal very difficult. This can only be achieved by emptying the tanks and removing sludge manually. Clarifier No. 3 is a circular clarifier of the Accelerator type with an integrated flocculator. This clarifier is completely out of operation as the electromechanical equipment (motor, stirrer, valves, and pipe-work) is worn out and would have to be replaced. Gauff Ingenieure 1-11 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Powdered Activated Carbon: PAC Lime Make-up Clarifiers No. 4, No. 5 and No. 6 are vertical flow clarifiers (overall depth: 12m) of the Patterson Candy type with 8 sludge pockets each. Clarifier No. 7 is a DegremontPulsator type clarifier, which receives its raw water by means of a separate gravity main from Lake Chivero. The vacuum system that creates the pulsations for sludge blanket formation is not working. A number of raw water diversion plates at the bottom of the rectangular clarifier are broken. Raw water inlet and clarified water outlet valves will need to be checked on their operational status including desludge valves. Rapid Gravity Sand Filters Unit 1 comprises a total of 26 No. rapid gravity sand filters: 12 PATTERSON filters (installed between 1952 and 1954) and 14 DEGREMONT filters (installed in 1966). Inlet and outlet baffle gates of the 12 “Patterson “type filters are completely corroded and need complete replacement. The float type filter outflow regulation system is completely worn out, and no longer operational. All valves (filtered water outlet, backwash water inlet, and air inlet) need to be replaced as many of these are heavily leaking. The new valves will need to be equipped with pneumatic actuators complete with corresponding air compressors. The two existing backwash air blowers are very old, but still operational. Inlet plates of the 14 “Degremont” filters are heavily corroded. A number of the A.C. filter floor slabs are cracked and need repairing. The “Degremont” siphon type outflow control system is not working. All valves (filtered water outlet, backwash water inlet, and air inlet) will need to be replaced. The new valves will need to be equipped with pneumatic actuators complete with corresponding air compressors. Only one air blower is operational for filter backwashing. A second air blower will need to be installed including all corresponding pipework and fittings. Gauff Ingenieure 1-12 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Circular Sedimentation Tanks The existing air pipework is leaking and requires repair or replacement. Two very old backwash water pumps (installed in 1954) are serving both, the “Paterson” and “Degremont” filters. A number of valves and pump starters will need to be replaced as the electrical control board is now in a bad state. For standby power Unit 1 has an old 120 kVA standby power generator. B: Unit 2 and Unit 3 Raw Water Pumping Station/ Raw Water Tower The underground raw water pumping station receives water by gravity flow from Lake Manyame via a rectangular tunnel, approximately 3m x 3m and 15.4 km long. The underground raw water pumping station is approximately 45m below the ground, and comprises a total of 5 WEIR pumps; 3 pumps installed in 1985 and 2 pumps installed in 1993. Raw water is pumped up a raw water tower approximately 40m above ground and then falls down by gravity into the 1800mm Ø main leading to the raw water mixing chamber where it is mixed with Lake Chivero raw water. Due to the 40m falling height it is expected that the water from Lake Manyame is supersaturated with dissolved oxygen, which later on is released in the Pulsator type clarifiers, thus reducing the floc formation process due to flotation effects. Chemical Storage, Preparation and Dosing In order to reduce the organic matter content of the raw water, Powdered Activated Carbon (PAC) is dosed into the raw water mixing chamber by one PAC dosing pump capable of dosing 25% of the total PAC demand leaving 75% being dosed manually by pouring the content of 25kg bags of PAC directly into the mixing chamber. For pH correction Sulphuric Acid (H2SO4, 98%) is dosed into the same mixing chamber above in order to reduce the raw water pH from a maximum range of 8.5 to 8.7 down to 6.8 to 7.0 which is the optimum pH range for subsequent coagulation with aluminium sulphate.Sulphuric acid is stored in a Gauff Ingenieure 1-13 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare 60 ton storage capacity tank, which lasts on average 4 days only and is dosed by a single pump. Aluminium Sulphate is dosed at the inlet point of the six distribution channels to the six Pulsator type clarifiers of Unit 2 and 3. Due to the required high aluminium dosing rates of 60 to 80 mg/l, a daily amount of approximately 40 tons of aluminium sulphate is required. There are three aluminium sulphate solution tanks approximately 600 m3 in capacity each. Granular aluminium sulphate is being dosed. Two concrete tanks, originally foreseen for sodium silicate preparation are now used for alum solution preparation and from these preparation tanks alum is pumped to two alum dosing tanks, out of which alum is dosed by means of two centrifugal pumps (GRUNDFOS). In order to allow for some alum solution reserve volume, it is now common practice to store surplus prepared alum solution in the above 600 m3 alum solution tanks. Sodium Silicate is dosed as a flocculation aid by means of two separate dosing plants, one for Unit 2 and one for Unit 3.Each plant comprises two concrete preparation and dosing tanks, each tank is equipped with a stirrer. Lime dosing for final pH-adjustment is through a lime dosing station, comprising 4 No. lime slurry hoppers and 4 No. lime dosing pumps. As part of the disinfection process, gaseous chlorine is dosed. Pulsator Type Sludge Blanket Clarifiers Unit 2 comprises 3 Pulsator type Clarifiers commissioned in 1976 and Unit 3 again comprises 3 Pulsator type Clarifiers commissioned in 1994. All clarifiers are of the same type and size. Pre-treated water is distributed by a distribution chamber with weirs discharging partially treated water to individual channels, where coagulation and some kind of pre-flocculation take place. Each clarifier inlet channel has a “Venturi” flume for flow measurement purposes. However, in one of the six channels this flume has been taken out, which leads to overloading of this individual channel and thus of the corresponding downstream clarifier. The “Pulsator” type clarification process is considered as not being the optimum clarification process for algae containing raw water as the formation of a sludge blanket over a large rectangular surface area is rather difficult under operational circumstances, where chemical dosing rates cannot be accurately monitored and where frequent power failures occur, leading to a complete breakdown of these sludge blankets. Compared to the vertical clarifiers (No.4, No.5 and No.6 of Unit 1), the solids and algae removal rate of Unit 2 and Unit 3 clarifiers is less than the removal rates observed for Unit 1 clarifiers. Therefore, due to the difficult sludge blanket formation only a limited sludge abstraction via sludge concentrators located at one side of the clarifiers, a lot of sludge is accumulated at the bottom of the clarifiers. This leads to frequent emptying and cleaning of the clarifiers (roughly, every 3 to 4 months) and thus a significant loss of water. The Pulsator system comprises the air pump, the corresponding motor, the starters and the vacuum release device. The vacuum systems are subject to frequent failures and thus have to be monitored very carefully and are being repaired rather frequently. Gauff Ingenieure 1-14 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Pulsator Clarifiers Rapid Gravity Sand Filters Unit 2 comprises 18 Degremont V-type rapid gravity sand filters and Unit 3 comprises 18 rapid gravity sand filters of the same type. Filter regulation is of the syphon type outflow regulation. This system is longer operational. New pneumatically actuated solenoid valves were installed in 2009/2010 in all four mains per filter (i.e. in Φ400 mm filtered water outlet, Φ 600 mm backwash water outlet, Φ 500 mm backwash water inlet and Φ 300 mm air inlet) for both, Unit 2 and Unit 3 sand filters,. However, Unit 3, compressed airlines are inadequate to meet the pressure required to operate the valve actuators. Filter backwash is by 5 No. backwash water pumps of which, 3 are dedicated to Unit 2 and 2 are dedicated to Unit 3.5 No. air blowers are also operational of which 2 are dedicated to Unit 2 and 2 are dedicated to Unit 3 with one stand-by air blower serving both Unit 2 and Unit 3. Rapid Gravity Sand Filters Stand-by Power Supply and Electrical Spare Parts Unit 2 and Unit 3 have a stand-by diesel generator set (PETBOW, 160 kVA), Gauff Ingenieure 1-15 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare High Lift Pump Station The treated water pump station comprisesof 14 pump-sets. Pump-sets 1-3 are fed from an ND 800 mm Ø suction pipe with a positive suction. Pump-sets 4-14 are fed from a concrete clear water duct with a capacity of 455 Ml/d with a positive suction. Pump-sets 1 - 3 were commissioned in 1954 as treated water pumps for the old treatment works. Due to continual operating problems during the last 5 to 10 years the pumps (W. H. Allen, Sons & Co, Size 20"/18") are scheduled to be replaced by Worthington Pumps with the same characteristics during 1996. When operating with two pumps in parallel only a minor rise in flow is achieved and the usual duty is with one pump operating and two as standby. The maximum discharge is for one pump is approximately 25 m3/min. The pumps discharge into a 750 mm Ø transmission main to Lochinvar Reservoir. A performance curve for the new 12 UZDL 25 Worthington pumps is available. The duty point for each pump-set is 19.0 m3/min, against a 172 m head with a pump efficiency of 85%. The speed is 1450 rpm. Pump-sets 4 - 6 were installed in 1960 for the transfer of treated water from the water treatment works to Warren Control Pumpstation through a 975 mm Ø pumping main. These pumps are now being replaced with new Worthington pumps with the same characteristics. The pumping station is connected to the old 1300 mm Ø pumping maindue to the replacement of the old and damaged pipes along the pipeline route to Warren Control. A performance curve for the new 12 LNC 29"A Pleuger Worthington pump is available. The duty point for two pumps in parallel is 75 m3/min against a 154.3 m head with an efficiency of 85%. The speed is 1480 rpm. Pump-sets 7 - 10 were commissioned in 1976 and the pump Model is 20" SDS METS. Each pump-set consists of two identical pumps connected in series with a duty point of 65 m3/min against a head of 123.83 m. The speed is 1482 rpm. They discharge into a 1300 mm Ø transmission main to Warren Control Pump Station. Pump-sets 11 - 14 were installed in 1994 and the pump Model is 16-LN-35E. Each pump set consists of two identical pumps connected in series with a duty point of 53 m3/min against a of 90 m head. The speed is 1482 rpm and the efficiency 88%. They discharge into another 1300 mm Ø transmission main to Warren Control Pumpstation. The three old pipes (750 mm, 975 mm and 1300 mm Ø) and the new 1300 mm Ø pipelinefrom the treated water pumpstation have flow recorders installed in separate chambers out of the main pumpstation. Gauff Ingenieure 1-16 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Treated Water Pump Station Backwash Water Treatment and Recycling Plant A backwash water treatment plant was installed approximately 10 years ago to treat dirty backwash water and recycle treated dirty backwash water to the head of the works. At nominal plant design capacity and depending on filter backwashing frequencies, the plant could easily result in a water savings of around 12,000 to 15,000 m3/d. However, due to lack of funding for the final completion of the works by ODIS Filtering Ltd., of Israel, the plant was never commissioned. The plant comprises the following treatment processes: • Polymer supported solid-liquid separation, (SOLIQUATOR), • Pressure filtration of the liquid phase of the SOLIQUATOR with the filtered water to Unit 3, • High rate settling for the solid phase of the SOLIQUATOR with the settled water returned to the SOLIQUATOR, • Polymer supported belt press thickening of the settled solids of the high rate settlers with the supernatant returned to the SOLIQUATOR, • Polymer supported filter press dewatering of the sludge from the belt press with the supernatant returned to the SOLIQUATOR. The following is the treated water production amounts for the past three years from 2009 to 2011. Gauff Ingenieure 1-17 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Table 1-5: Production amount of MJ-WTW Production / Month 2009 2010 2011 3 ( x 1000 m /d) Monthly Daily Monthly Daily Monthly Daily January 13,459 434 18,011 581 18,182 587 February 10,968 392 15,526 555 15,513 554 March 11913 384 17,173 554 18,576 599 April 11,452 369 15,923 514 17,792 574 May 11,228 362 18.151 586 17,985 580 June 17,667 489 15,147 505 17,981 599 July 11,981 384 16,822 543 18,804 607 August 15,930 514 18,207 587 17,794 574 September 17,887 596 17,535 585 17,683 589 October 16,944 547 17,816 575 17,559 566 November 15,976 533 17,248 575 17,573 586 December 16,362 528 17,581 567 18,029 582 Total 168,677 462 205,140 562 213,471 585 As shown in the table above, the 2011 production amount almost reached 600,000 m3/d and has been gradually increasing as compared with that in 2009 and 2010 In 2009, a survey for the improvement of the WTW was carried out, and financing of the water treatment chemicals was provided by UNICEF. In addition, the chlorine dosing facilities were being refurbished since 2012. Chemical consumption of MJ-WTP is shown in the table below and the dosing rates of coagulant and acid were quite large. Table 1-6: Consumption of chemicals at MJ-WTP (2012) Dosing Rate Chemical / duration Consumption (ton) ( mg/l) Monthly Daily Activated Carbon 270.0 9.00 15.4 Granular Alum 2,025.0 67.50 115.4 Liquid Aluminium Sulphate 3,900.0 130.00 222.2 Chlorine Gas 45.0 1.50 2.6 Powder Lime 162.0 5.40 9.20 Sodium silicate 35.0 1.17 2.0 Sulphuric acid 4.7 0.16 0.3 Base Sulphuric Acid 450.0 15.0 25.6 Gauff Ingenieure 1-18 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Dosing Rate Chemical / duration Consumption (ton) ( mg/l) Hypochlorite 30.0 1.00 1.7 The table below shows the condition assessment of Morton Jaffray WTW. Table 1-7: Condition Assessment of Morton Jaffray WTW Structure Morton JaffrayWTW Civil structures In general the concrete structures are in a reasonable condition. There is evidence of corrosion of concrete in places, but no costly repairs are envisaged. Buildings The administration building and superstructures of the pump stations and chemical buildings are in a reasonable to good condition and can be repaired relatively inexpensively Pipework The below-ground pipe work could not be assessed, but from previous experience, no major repairs are envisaged. All the above- ground steel pipe work is completely corroded. The steel pipe work inside the pump stations appears to be in a reasonable condition and could probably be refurbished by sand-blasting and painting Structural Steelwork The structural steelwork on the clarifiers, submerged pipes together with all handrails can be sand blasted and repainted. Rapid Gravity Sand Filters All pipework and fittings covering flow control mechanism, backwash, filtered water and raw water are all corroded and in need of replacement. Filter media needs replacing including rehabilitation of the under-drainage system Mechanical Equipment All the pumps will have to be replaced i.e. chemical dosing pumps, backwash pumps including associated air supply system Electrical Equipment All the electrical panels will have to be replaced and probably most of the underground cables as well 1.2.2 Prince Edwards WTW Intake water of PE-WTW is taken from Seke and Harava Dams with a combined volume of 12.5 million m3. The design capacity of PE-WTW is circa 90,000 m3/day. The amount of water currently being treated at PE-WTW is circa 55,000 m3/d during the wet season and 40,000 m3/d in the dry season respectively. The quantities of the raw water intake during the above periods are around 60,000 m3/d and 45,000 m3/d respectively. The above production amounts are normally reduced during drought periods. The other related water reduction (withdrawal) from the lakes consists of evaporation and percolation /leakage from the bottom and dam structure. Prince Edward WTW was constructed in 1950 and renovated in 1973. Prince Edward Water Treatment Works (WTW) is a conventional surface water treatment works which consist of the following unit processes: • Chemical Dosing (Coagulation, disinfection), • Rapid Mixing, • Flocculation, • Sedimentation, • Rapid Sand Filtration, Gauff Ingenieure 1-19 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare • Stabilization, and • Disinfection. Low Lift Pump Station The low lift pump station consist of 4 pumps and abstracts raw water from Prince Edward Dam. The pumps have been in operation for the past 40 years. These pumps will be replaced under the UWSSRP Phase 1. Low Lift Pump Station Chemical Dosing Aluminium Sulphate is dosed at the inlet point of the distribution channel to 28 No. clarifiers where rapid mixing and flocculation is achieved.The channel is 28.6m long by 2.4m wide and 2m deep and has asbestos deflectors that facilitate mixing and flocculation and ensures the homogeneity of the coagulant and promotes flocculation. The coagulant is mixed in three alum make-up tanks and the solution gravitates to three number mixing tanks before being pumped to the dosing point.According to the plant operators, the average Aluminium Sulphate dosage rate is almost the same throughout the year, approximately 27.5 to 35mg/l. In order to reduce the organic matter content of the raw water during dry periods and following the first rains, Powdered Activated Carbon (PAC) is dosed into the raw water by means of manually dosing one 25 kg bag for 2 hrs. For pH correction, lime is dosed after being prepared in two octagonal tanks with mixers. Dosing is done down-stream of the rapid sand filters. Sodium Silicate is dosed as a flocculation aid between September and December at a rate of 0.5mg/l. As part of the disinfection process, gaseous chlorine is dosed. In addition it is dosed to kill algae, due to algal bloom in the supplying dams. Gauff Ingenieure 1-20 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Clarifiers There are 28 No. vertical flow clarifiers all approximately 18m x 9m x 9m with a surface loading rate of 1.5m/hr. The clarifiers receive coagulated water from a central circular distribution chamber that is connected to the flocculation channel. Clear water collection troughs are made of asbestos cement and consequently are very difficult to clean and as such these must be replaced with steel troughs with V-notch weirs for optimum and even distribution of clarified water. Treated water is collected by several troughs installed at the top of the tanks and flows to rapid sand filters. The clarification treatment performance appears to be good. The manually operated desludging valves are all in good operational status. The abstracted clarifier sludge is transferred to sludge lagoons by means of two sludge pumps, installed in the old 1929 low lift pump station. Out of these two pumps only one is operational and is very old. Therefore, two properly designed sludge pumps will need to be installed including corresponding pipework and valves. Rapid Sand Filters There are sixteen Degremont Aquazur typerapid gravity sand filters constructed in banks of eight either side of the filter gallery and observation deck with the following dimensions 11.8m x 4.25m. The operators advised that under normal circumstances the filtration rate is around 5m/hr. The water depth on the sand filter surface is controlled by siphons, of which vacuum strength is regulated by floats so that the water level is constant. However, this control mechanism is no longer operational andwhen the filter resistance reaches 1.5 m, washing of the filter layer using pumped water and pressurized air takes place. The backwash sequence is; air only followed by air and water and then water only until the water is clear. The filter floors comprise partly cracked asbestos cement slabs with Degremont D20 type filter nozzles. Each filter is operated via three valves i.e. filtered water outlet, backwash water inlet and air inlet valves. The valves are fitted with pneumatic actuators which needs a complete overhaul. High Lift Pump Station Three pumps are installed in the high lift pump station. Some pumps were replaced recently under the EU project. All the other installations are approximately 40 years old. Presently only one pump is operational and it is reported that even the characteristics of the newly installed pump motors might not be adequate for the corresponding pump. However, new pumps will be installed under the UWSSRP Phase 1. The pump station has a drainage pump that is very old. Table 1-8: Condition Assessment of Prince Edward WTW Structure Prince Edward WTW Civil structures In general the concrete structures are in a reasonable condition. There is evidence of corrosion of concrete in places, but no costly repairs are envisaged. Buildings The administration building and superstructures of the pump stations and chemical buildings are in a reasonable to good condition and can be repaired relatively inexpensively Pipework The below-ground pipe work could not be assessed, but from previous experience, no major repairs are envisaged. All the above- ground steel pipe work is completely corroded. The steel pipe work inside the pump stations appears to be in a reasonable condition and Gauff Ingenieure 1-21 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Structure Prince Edward WTW could probably be refurbished by sand-blasting and painting Structural Steelwork The structural steelwork on the clarifiers, submerged pipes together with all handrails can be sand blasted and repainted. Rapid Gravity Sand Filters All pipework and fittings covering flow control mechanism, backwash, filtered water and raw water are all corroded and in need of replacement. Filter media needs replacing including rehabilitation of the under-drainage system Mechanical Equipment All the pumps will have to be replaced i.e. chemical dosing pumps, backwash pumps including associated air supply system Electrical Equipment All the electrical panels will have to be replaced and probably most of the underground cables as well 1.3 Booster Pump Stations The water distribution network of the City of Harare consists of 16 booster stations for the conveyance of treated water. Based on the designated duty pumps in these stations, the minimum pumping capacity ranges from 720 m3/day to 362,880 m3/day. Out of the 16 booster stations, 6 are lift stations with 4 water towers at Donnybrook, Highlands, Greendale and Waterfalls with 2 being reservoirs near Kuwadzana and Dzivaresekwa. There are also 2 private pump stations at Donnybrook for Lafarge Cement Factory and at Philadelphia for a military camp. With the proposed Kunzwi WTP and Kunzwi Booster Station, a number of these booster stations will not be required in the long term planning to 2030. A summary of these booster stations is provided in the table overleaf. Gauff Ingenieure 1-22 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Table 1-9: Greater Harare Booster Pump Stations Pumping/ Q H Capacity Pumps kW Yea Item Nr Item Description Function Remedial Measures Gravitation to (m³) (m) (m³/d) D + SB per Pump Built Medium Term Long Term Transmission 2520 12 362880 6+8 930.84 1953 Reh Reh/Rep 1 Warren Control 1.1 Transmission Letombo 181440 Transmission Alexandra 181440 1.2 Park 2 Alexandra Park 2.1 New Pump house Transmission Hatcliff 1035 95 24840 1+1 200 2006 Reh NR 2.2 Old Pump house Transmission Highlands 1250 55 60000 2 +2 300 1970 3 Highlands Lift Station Distribution 45 60 1080 1+1 22 2002 Reh Reh/Rep Lift Station Distribution 140 30 3360 1+1 18.3 1955 4 Donnybrook 4.1 New Pump house Distribution Distribution - - - 1+1 NC Private Tank Cement - - - Priva Private Pump 4.2 house Factory 5 Letombo Transmission 900 97 86400 4 +2 450 1979 Reh NR 5.1 Transmission Greendale 43200 2+1 5.2 Transmission Donnybrook 43200 2+1 Gauff Ingenieure 1-23 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Pumping/ Q H Capacity Pumps kW Yea Item Nr Item Description Function Remedial Measures Gravitation to (m³) (m) (m³/d) D + SB per Pump Built Medium Term Long Term 5.3 Transmission Sunway City - - - 1+1 75 NC 15 6 Orange Groove Transmission 250 18000 3+2 90 Reh NR Medium Transmission Highlands 6000 1+1 Transmission Greendale 12000 2+1 1979 7 Greendale Lift Station 110 22 2640 1+1 15 Reh Rep 1971 8 Crow Hill Transmission Philadelphia 400 40 9600 1+1 110 Reh Rep 1978 9 Philadelphia Transmission Hogerty Hill 150 35 3600 1+1 18.5 9.1 Private Tank Domboshava - - - - - - - - 10 Emerald Hill Lift Station 15 30 720 2+1 4 1980 Reh Rep Transmission - - - 1+1 2000 RI 11 Avondale Transmission Emerald Hill 590 70 42480 3+1 160 1959 Reh NR 12 Bluff Hill* Transmission Adylinn 272 55 13056 2+1 55 1960 NR NR 13 Kuwadzana** Lift to Reservoir Reservoir 02 200 90 4800 1+1 90 1995 In NR Gauff Ingenieure 1-24 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Pumping/ Q H Capacity Pumps kW Yea Item Nr Item Description Function Remedial Measures Gravitation to (m³) (m) (m³/d) D + SB per Pump Built Medium Term Long Term 14 Marimba Park*** Lift Station 150 35 3600 1+1 18.5 1980 Reh Rep 15 Water Falls*** Lift Station 150 35 3600 1+1 18.5 1995 Reh Rep Dzivaresekwa*** 16 Lift to Reservoir - - - IC In NR * Notes * Completely vandalised and not in use ** Both pumps are missing *** Pump capacity estimated **** Building complete but no equipment installed. Part of pipework completed. NC Not Commissioned IC Incomplete Reh Rehabilitation Rep Replacement In Installations NR Not required RI Reinstate Gauff Ingenieure 1-25 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare 1.3.1 Warren Control Pump Station Warren Booster Pump Station is the central transfer station for the supply of water from Morton Jaffray WTW. This booster station was constructed in 1953 and since been upgraded at intervals to date. The pump station is situated on the Bulawayo Road, approximately 7 km west of the City Centre. This pump station was upgraded match with the upgrades at the Morton Jaffray WTW. The minimum capacity of this pump station is circa 362,880 m3/day. Warren Pump Station fourteen pumps which are installed in two pump houses; pump house No 2 and 3. Six of the fourteen pumps are duty pumps while the remaining eight are standby pumps. Below are the details of the pumps found at Warren Pump Station: • Make: Weir Split Casing • Model: Uniglide, SDBE 450/600 • Type: Horizontal side suction and delivery • Q = 2520 m3/h. • H = 120 m • Motor: 930.84 kW, 3.3 kV • Suction valves: DN 600 gate valves with actuators; • Delivery valves: DN 600 gate valves with actuators • Non-return valves: poppet type The table below shows the condition of the pumps, motors and starter motors. Table 1-10: Condition Pumps at Warren Pump Station No Pump Motor Console 1 Not Operational Not Operational Not Operational 2 Operational Operational Operational 3 Not Operational Not Operational Operational 4 Not Operational Not Operational Operational 5 Not Operational Not Operational Operational 6 Operational Operational Operational 7 Operational Operational Operational 8 Not Operational Not Operational Operational 9 Not Operational Not Operational Not Operational 10 Not Operational Not Operational Operational 11 Operational Operational Operational 12 Operational Not Operational Operational 13 Operational Operational Operational 14 Operational Operational Operational The table overleaf shows the investment measures required at the Warren Control Pumps Station. Gauff Ingenieure 1-26 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Table 1-11: Proposed Investment Measures at Warren Pump Station Immediate Medium Term (2020) Long Term (2030) Rehabilitation of the chlorination plant, Consolidation of SCADA ammonia plant, Booster pumps and motors System and Rehabilitation of including the replacement of pumps, 2 and 4 Pumps complete with motors and pump controls. Rehabilitation of suction, delivery and non- return valves, Installation of air valves, gantry cranes, and Switchboards. Reinstatement of small power and lighting, security lights, dewatering pumps and ventilation fans. Rehabilitation of the standby generator, replacement of butterfly valves, flow meters, level gauges andInstallation of SCADA system. 1.3.2 Alexandra Park Pump Station The Alexandra Park Pump Station was built between 1974 and 1975. There are two pump stations at Alexandra Park Pump Station. The pump station is situated inside the Botanical Gardens at the north-east of the Alexandra Park reservoir site. The old pump station house pumps which pump water to the reservoirs at Highlands. A new pump station was constructed at Alexandra Park in 2000 next to the existing old pump house. This pump house pumps water to the Hatfield reservoirs.Below are the details of the pumps found at Alexandra Park Pump Station. Pump Station 1 There are 4 No pumps (3 Duty, 1 Standby) having the following particulars: • Make: KSB ETA 250-50 DSKN (2 nr, year 1975 and 2002)/ Boshan KT 300/250/400 (1 nr, year 2000) • Type: Horizontal Volute • Q = 1,036 m3/h. • H = 45 m/50 m • Motor: 250 kW/300 kW, 380 V • Suction gate valves: DN 400 gear operated; • Delivery gate valves: DN 400 gear operated; • Non-return valves: hinged gate type, DN 400 Pump Station 2 The pump station, No 02 has two pumps (1 Duty; 1 Standby). The particulars of these pumps are: • Make: KSB ETA 250-50 DSKN (Year: 2000) • Type: Horizontal Split Casing • Q = 1,035 m3/h. • H = 95 m • Motor: 375 kW, 380 V Gauff Ingenieure 1-27 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare • Suction gate valves: DN 400 gear operated; • Delivery gate valves: DN 400 gear operated; • Non-return valves: hinged gate type The table below shows the condition of the pumps, motors and starter motors. Table 1-12: Condition Pumps at Warren Pump Station No Pump Motor Console Pump Station 1 1 Not Operational Operational Not Operational 2 Non Operational Operational Operational 3 Operational Operational Operational 4 Operational Operational Operational Pump Station 2 1 Operational Operational Operational 2 Operational Operational Operational The table overleaf shows the investment measures required at the Alexandra Park Pump Station. Table 1-13: Proposed Investment Measures at Alexandra Park Pump Station Immediate Medium Term (2020) Long Term (2030) Pump Station No 1 Rehabilitation of booster pumps and motors, Will need to be Suction, delivery and non-return valves and decommissioned Installation of air valves. Rehabilitation of Switchboards, reinstatement of small power and lighting, security lights, replacement of dewatering pump, rehabilitation of ventilation fan and installation of electric wire rope hoist. Replacement of level gauges and installation of SCADA system Pump Station No 2 Rehabilitation of booster pumps and motors, Consolidation of SCADA Suction, delivery and non-return valves and System and Rehabilitation of Installation of air valves. Pumps Rehabilitation of Switchboards, reinstatement of small power and lighting, security lights, replacement of dewatering pump, rehabilitation of ventilation fan and installation of electric wire rope hoist. Replacement of level gauges and installation of SCADA system Gauff Ingenieure 1-28 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare 1.3.3 Highlands Lift Station The Highlands Lift Station has two pumps (1 Duty and 1 Standby) which pump water to an elevated fibre glass tank with a 10 m3 capacity. From this tank, water gravitates to supply the highlands area. The pumps at the Highlands Lift Station are controlled through a hydrophone. The pump station is operational but requires attention in improving the cable installations and the pump house itself. For the long term measures, the construction of a new pump house is recommended. The two pumps at the Highlands Lift Station are of different make and capacity. The replaced pumps should be of the same capacities and make for standardisation and parallel operation for peak delivery. Below are the details of the pumps found at Highlands Lift Station: Pump No 01 • Make: Ebara • Model: MD/A 200/22 (Year 2002) • Type: Horizontal volute • Q = 48/132 m3/h. • H = 59.5/46 m • Motor: 22 kW, 380 V Pump No 02 • Make: KSB • Model: ETA 50/250(Year 2002) • Type: Horizontal volute • Q = 110 m3/h. • H = 22 m • Motor: 22 kW, 380 V Non-return valves: poppet type The table below shows the condition of the pumps, motors and starter motors. Table 1-14: Proposed Investment Measures at Highlands Lift Station Immediate Medium Term (2020) Long Term (2030) Replacement of cables, pumps Construction of a new pump house, complete with motors, starters and replacement of the elevated tank installation of SCADA system. with one of a larger capacity. Replacement of pumps, motors and starters for the required water demand and Installation of pump controls. Gauff Ingenieure 1-29 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare 1.3.4 Donnybrook Pump Station The Donnybrook Pump Station has 3 pump houses: • the Mabvuku Pump house located in the water tower; • the Cement Factory Pump house; • a new pump house, which had not been commissioned at the time of our visit. Mabvuku Pump house The Mabvuku pump station was built between 1955 and 1956. This is a lift pump station for pumping water to the elevated concrete tank. The pump house is located inside the water tower The water tower supplies by gravity to the high lying area surrounding the reservoir site. The lift station is has two centrifugal pumps (1Duty and 1Standby). The pumps are arranged for parallel operation if required. The capacity of the original pumps was71 m3/h with a head of 22.25 m. These pumps have been replaced with the ones described below. The pumps’ operation is designed to be automatic by means of a float-switch installed in the water tower. This system, however, is not operational.The flow meter installed on the inlet pipe of the lift station is also not operational. Only one pump was found to be operational as the second pump had been removed. Below are the details of the pumps found at Mukuvisi Pump House: • Make: SPP; • Model: Unistream; • Type: Horizontal volute; • Q = 140 m3/h; • H = 30 m; • Motor: 18.5 kW, 380 V. New Pump House A new pump house has been constructed within the compound of the Donnybrook reservoir. The pipework, pumps and switchboards have been installed but it was commissioned at the time of the site visit. Consequently, the specifications of the equipment could not be confirmed. Cement Factory Pump House A pump house for the Lafarge Cement Factory, situated at the reservoir site, also draws water from the Donnybrook reservoir. The pump capacities could not be confirmed. The table overleaf shows the proposed investment measures at the Donnybrook Pump Station. Gauff Ingenieure 1-30 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Table 1-15: Proposed Investment Measures at Donnybrook Pump Station Immediate Medium Term (2020) Long Term (2030) Provision of new pumps and motors, Replacement of pumps, motors and rehabilitation of the fittings, provision of starters for the required water air valves and pressure gauges. demand, valves and fittings. Installation of pump controls, flow Provision of a standby generator meter, improvement of illumination and provision of SCADA system 1.3.5 Letombo Pump Station The Letombo Pump Station is located on Cavan Lane, off Mutare Road and it was built in 1979. The pump station pumps water to the eastern zone of Harare. The water from the Letombo reservoirs is pumped to Donnybrook, Ventersburg and Greendale reservoirs. Initially, there were five pumps (3Duty; 2Standby) with a capacity of: • Q = 900 m3/h • H = 98 m These pumps were arranged to operate as follows: • Pumping to Donnybrook and Ventersburg reservoirs: 3 No pumps (2Duty and 1 Standby); • Pumping to Greendale reservoirs and distribution system: 2 No pumps (1Duty; 1Standby) The pump house initially had a plinth which was built to accommodate an additional pump. This pump was installed in 1999 to allow two duty pumps for each of the above pumping mains. The pumps are automatically operated by a float-switch installed at the reservoir sites and linked by radio signal. The Clayton valve at Ventersburg is not operational. As a result, the gate valve at the inlet pipe of the two interconnected reservoirs has to be closed and opened manually, on a daily basis. The Clayton valve, DN 600 needs to be replaced. The outlet pipe of the pumping station is metered with the following flow meters: • Flow meter AL8: records flows to Ventersburg and Donnybrook on DN 600 line • Flow meter AL9: records the discharge to Greendale reservoirs and the reticulation system of Greendale on DN 500 line Both these flow meters were found to be not operational.In 1999, a new pump house (Sunny City) was constructed and equipped but to date it has not been commissioned.The following are the pump parameters at the Sunway City Pump House. • Make: Weir Envirotech (1999); • Type: Horizontal Split Casing; • Q & H: Not shown on the nameplate; • Suction gate valves: DN 200; • Delivery butterfly valves: DN 200; • Motor: 75 kW, 380 V; Gauff Ingenieure 1-31 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare In addition, a new chlorination facility was constructed in 2012 by UNICEF. This facility has also not been commissioned to date. Letombo Pump House Below are the details of the pumps found at Letombo Pump House: Pumps (2Duty; 1Standby): Pumping to Donnybrook (Pump Nos 01, 02 & 03) • Make: Salweir (original pumps) • Type: Split Casing • Q = 900 m3/h • H = 98 m • Motor: 350 kW, 3.3 kV Pump Nos 01 and 02 were installed in 1979 and are worn out. Pump No 03 was replaced in 1999 with the following pump: • Make: Boshan • Model: OS 250/600 • Type: Split Casing • Q = 1036 m3/h • H = 105 m • Motor: 450 kW, 3.3 kV Pumps (2Duty; 1Standby): Pumping to Green Dale (Pump Nos 04, 05 & 06) • Make: Salweir (original pumps) • Type: Split Casing • Q = 900 m3/h • H = 98 m • Motor: 350 kW, 3.3 kV Pump Nos 04 and 05 were installed in 1979 and are worn out. Pump No 04 is operational but the motor is not operational. Pump No 06 was replaced in 1999 with the following pump: • Make: Boshan • Model: OS 250/600 • Type: Split Casing • Q = 1036 m3/h • H = 105 m • Motor: 450 kW, 3.3 kV The table overleaf shows the condition of the pumps at Letombo Pump Station. Gauff Ingenieure 1-32 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Table 1-16: Condition Pumps at Letombo Pump Station No Pump Motor Console 1 Operational Operational Operational 2 Operational Non Operational Operational 3 Operational Operational Operational 4 Operational Non Operational Operational 5 Non Operational Operational Operational 6 Operational Operational Operational The table below shows the proposed investment measures at the Letombo Pump Station. Table 1-17: Proposed Investment Measures at Letombo Pump Station Immediate Medium Term (2020) Long Term (2030) Replace pumps complete with motors and starters, rehabilitate pumps and motors. Replacement of suction butterfly valves and delivery gate valves. Rehabilitation of motor feeder switchboard, replace the DC system and replace 1 transformer. Installation of overhead electric wire rope hoist and SCADA system and harmonise with the reservoir float switches 1.3.6 Orange Grove Pump Station Orange Grove pump station was constructed between 1969 and 1970 and it is situated on Ranelagh Drive off Orange Grove, south west of Highlands reservoir site. Orange Grove gets it’s ,main supply from Alexandra Park reservoirs by two gravity mains of DN 450 and DN 375. The water is supplied to a sump from where it is pumped to Greendale and Highlands reservoirs. There are six pumps and two pumps operate in parallel for the supply to Greendale and Highlands with one pump for each pumping main being on standby. These pumps are automatically operated by float-switches installed at Greendale and Highlands reservoirs and linked by radio signal. This system, however, is no longer operational. Below are the details of the pumps found at Orange Grove Pump House: • Make: Weir Envirotech • Type: Horizontal Multistage • Q = 250 m3/h • H = 150 m • Motor: 90 kW, 380 kV Gauff Ingenieure 1-33 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare The table below shows the condition of the pumps at Letombo Pump Station. Table 1-18: Condition Pumps at Orange Grove Pump Station No Pump Motor Console 1 Operational Operational Operational 2 Non Operational Operational Removed 3 Operational Operational Operational 4 Operational Operational Operational 5 Operational Operational Operational 6 Removed Removed Removed The table below shows the investment measures required at the Orange Grove Pump Station. Table 1-19: Proposed Investment Measures at Orange Grove Pump Station Immediate Medium Term (2020) Long Term (2030) Rehabilitation of pumps complete with motors and The Orange Grove starter panels. pump station pumps to Replacement of ZESA Incomer OCB, suction Highlands and valves,delivery valves,NRV and rehabilitation of Greendale. In the long valve headstocks. term, the latter will get Replacement of suction manifold and main delivery supplies from the manifold gate valves. proposed Kunzwi Reinstatement of the radio link, float switches in resource zone and the the reservoirs and float switches in the pump pump station (Orange suction chamber Grove) will not be Reinstatement of the lights and servicing of the required the gantry crane 1.3.7 Green Dale Pump Station The Green Dale water tower was constructed between 1979 and 1980 and it replaced the old water tower, which still exists. The lift pumps convey water to the elevated tank for supply by gravity to the high lying areas of Greendale surrounding the reservoir site. Green Dale receives water from Alexandra Park via Orange Grove. The lift station is located in the base of the water tower and it is equipped with two pumps, which may be operated in parallel. The original pumps were reportedly Salsa Weir, model VES 100-728. The existing pumps have the following specifications: • Q = 110 m3/h; • H = 22 m The table overleaf shows the condition of the pumps at Green Dale Pump Station. Gauff Ingenieure 1-34 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Table 1-20: Condition Pumps at Green Dale Pump Station No Pump Motor Console 1 Operational Operational Operational 2 Non Operational Operational Removed 3 Operational Operational Operational 4 Operational Operational Operational 5 Operational Operational Operational 6 Removed Removed Removed The table below shows the investment measures required at the Green Dale Pump Station Table 1-21: Proposed Investment Measures at Green Dale Pump Station Immediate Medium Term (2020) Long Term (2030) Reinstatement of the pump station by the The Orange Grove pump replacement of pumps and motors, starters, station pumps to Highlands flow meter, valves and pump control and Greendale. In the long system. term, the latter will get supplies from the proposed Kunzwi resource zone and the pump station (Orange Grove) will not be required the 1.3.8 Crow Hill Pump Station The Crow Hill Pump Station was constructed between 1971 and 1972 and it is located at the junction of Borrowdale Road and Crow Hill Roads. The water supplied from Alexandra Park Pump Station 02 is pumped by the Crow Hill Pump Station to Philadelphia reservoirs to supply the Winchendon, Quinnington and Philadelphia areas from the reservoir. In a long term, it is proposed that Crow Hill will receive water by gravity from Highlands and then pump to Philadelphia reservoirs. The pumping station is equipped with two horizontal centrifugal pumps. The pumps may be operated in parallel. There is an additional space available to install another pump if required. The pumping station is automatically operated by a float-switch installed at Philadelphia reservoir. There is no flow meter to record the outflow. A dedicated transformer supplies the LV power for the pumps. Below are the details of the pumps found at Crow Hill Pump Station: Pump No 01 • Make: Boshan (2006) • Model: RS 150 46 DA • Q = 415 m3/h • H = 46 m • Motor: 110 kW/380V Gauff Ingenieure 1-35 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Pump No 02 • Make: Harland (1972) • Q = 381.6 m3/h • H = 37.5 m • Motor: (missing) The table below shows the condition of the pumps at Crow Hill Pump Station. Table 1-22: Condition Pumps at Crow Hill Pump Station No Pump Motor Console 1 Operational Operational Operational 2 Non Operational Removed Removed The table below shows the investment measures required at the Crow Hill Pump Station. Table 1-23: Proposed Investment Measures at Crow Hill Pump Station Immediate Medium Term (2020) Long Term (2030) Rehabilitation of pump complete with motor Replacement of pumps with and starter panel. lower capacities. Rehabilitation of suction valves, delivery valves and NRVs Reinstatement of the radio link, float switches in the reservoirs and float switches in the pump suction chamber. Installation of electric wire rope hoist and reinstatement of the lights. 1.3.9 Kuwadzana The Kuwadzana Pump Station was commissioned in 1995 and it is situated on in the south- east of Kuwadzana. The pump station receives water from a branch line of 600 mm Ø off the 750 mm Ø pipeline from Morton Jaffray WTP, which conveys water to the City. The pumping main is a 300 mm Ø pipe to the Fontainebleau reservoir, north of Kuwadzana. The pump station has three plinths for pumps. Only two pumps were installed but both of these pumps have been removed, leaving the motors only. The spare plinth has the pipework. Two pumps for parallel operation were installed as one duty and one standby. The original pumps reportedly had the following specifications: • Make: Vogel • Model: LS 100-250 • Q = 198 m3/h • H = 90 m • Motor: 90 kW/380 V The pumps were operated automatically by a float switch installed in the reservoir and linked by radio connection. Gauff Ingenieure 1-36 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Table 1-24: Condition Pumps at Kuwadzana Pump Station No Pump Motor Console 1 Removed Not Operational Operational 2 Removed Not Operational Operational The table below shows the investment measures required at the Kuwadzana Pump Station. Table 1-25: Proposed Investment Measures at Kuwadzana Pump Station Immediate Medium Term (2020) Long Term (2030) Rehabilitation of pump complete with motor and starter panel. Rehabilitation of suction valves, delivery valves and NRVs Reinstatement of the radio link, float switches in the reservoirs and float switches in the pump suction chamber. Installation of electric wire rope hoist and reinstatement of the lights. 1.3.10 Hogerty Hill Pump Station The Hogerty Hill pump station was commissioned in 1979 and it is situated on the Philadelphia reservoir site, which lies north east of Harare. The pumps draw water from a sump and supply it to the Hogerty Hill reservoir through a pumping main of 200mm Ø transmission line. The pump station has three plinths for pumps.Only two pumps have been installed. The pumps are operated automatically by a float switch installed in the reservoir and linked by radio connection. The particulars of the pumps (1Duty and 1Standby) are as follows: • Make: AJAX • Type: 3 MS • Q = 136 m3/h • H = 30 m Table 1-26: Condition Pumps at Hogerty Hill Pump Station No Pump Motor Console 1 Operational Operational Operational 2 Operational Operational Operational Domboshava (Private) Pump House The Domboshava Pump House is similar to the above but it was not inspected at the time of the site visit, therefore, the particulars of the installations could not be confirmed. The table overleaf shows the investment measures required at the Hogerty Hill Pump Station. Gauff Ingenieure 1-37 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Table 1-27: Proposed Investment Measures at Hogerty Hill Pump Station Immediate Medium Term (2020) Long Term (2030) Rehabilitation of pump complete with motor Rehabilitation/replacement of and starter panel. electromechanical equipment Rehabilitation of suction valves, delivery valves and flow meter Rehabilitation of manifolds and reinstatement of small power and lighting 1.3.11 Emerald Hill Pump Station. Emerald Hill has two pump stations. The old pump station was commissioned in 1980 and it is a lift station which supplies the Emerald Hill Water Tower for distribution to the neighbouring school and other high lying areas. The Emerald Hill reservoirs receive water from Avondale Pump Station. In 2000, another pump house was built to supply high lying areas some 15 km away in Mount Pleasant Heights Area. This pump house has not been used in spite of having all the pumps and switchboards fully installed. The lift station was equipped with three centrifugal pumps which are arranged for parallel operation with two pumps on duty and one pump on standby. However, there is now only one pump in operation and the other two have been removed. The pumps are operated automatically by a float switch installed in the water tower and linked by radio signal. The Lift Station The particulars of the pumps (1 Duty and 1 Standby) installed in the old pump house are as follows: • Make: SUNGUS, • Model: VSC Size 11/2x2 • Q = 9.55 m3/h • H = 27.4 m The current condition of the pumps, motors and starters is summarised in the table below: Table 1-28: Condition Pumps at High Lift Pump Station No Pump Motor Console 1 Removed Not Operational Operational 2 Removed Removed Not Operational 3 Removed Removed Not Operational The New Pump House The particulars of the pumps (1Duty; 1Standby) installed in the new pump house could not be confirmed. The current condition of the pumps, motors and starters is summarised in the table overleaf: Gauff Ingenieure 1-38 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Table 1-29: Condition Pumps at New Pump Station No Pump Motor Console 1 Operational Operational Operational 2 Operational Operational Operational The table below shows the investment measures required at the Emerald Hill Pump Station. Table 1-30: Proposed Investment Measures at Emerald Hill Pump Station Immediate Medium Term (2020) Long Term (2030) Replacement of pumps, starters, Replacement of pumps, starters, switchboard, and pump control system, switchboard, and pump control valves, reinstatement of small power and system, valves, reinstatement of lighting at the old pump station. small power and lighting at the old pump station. 1.3.12 Avondale Pump Station The Avondale pump station was commissioned in 1959 and it is situated at the junction of Lomagundi Road/West Road. The pump station receives water from Warren Control Station and it pumps it to Emerald Hill reservoirs. Three of the pumps are fed from a suction chamber but one pump is for emergency use and it gets water directly from the Warren pumping main. There are four centrifugal pumps which are arranged for parallel operation. The pumps are operated automatically by a float switch installed in the Emerald Hill reservoir and liked by radio signal. The particulars of the new pumps (2 Duty; 1 Standby) are as follows: • Make: Boshan; • Type: Horizontal Split Casing; • Q = 590 m3/h; • H = 70 m; The current condition of the pumps, motors and starters is summarised in the table below: Table 1-31: Condition Pumps at Avondale Pump Station No Pump Motor Console 1 Operational Operational Operational 2 Operational Operational Operational 3 Non Operational Non Operational Non Operational 4 Operational Operational Operational The table below shows the investment measures required at the Avondale Pump Station. Table 1-32: Proposed Investment Measures at Avondale Pump Station Immediate Medium Term (2020) Long Term (2030) Rehabilitation of pumps complete with This pump station will not be motors and starters. required for long term as Gauff Ingenieure 1-39 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Immediate Medium Term (2020) Long Term (2030) Replacement of flow meters, pump adequate water from the control system and valves. proposed Kunzwi project will be Rehabilitation of manifolds and available. reinstatement of small power and lighting 1.3.13 Bluff Hill Pump Station The Bluff Hill Pump Station was commissioned in 1960 and is situated on Lorraine Drive, near Faber Road. It was observed during the site visit that Bluff Hill pump station has completely been vandalised and all the equipment stolen. The pump station supplied water to Adylinn, Epsilon, and Bluff Hill reservoir sites. The station was equipped with three centrifugal pumps which were arranged for parallel operation. These pumps reportedly had the following specifications. • Make: Harland • Model: SDC 5/6 • Q = 272 m3/h • H = 55 m • Motor: 75 kW/380 V There is now a direct 800 mm pumping main from Warren to the above reservoirs and therefore, there is no need for this pump station. Recommended Remedial Measures for Bluff Hill Pump Station As stated above, the Bluff Hill pump station is completely vandalised and it also served no purpose as direct pumping main of 800 mm is existing to supply water to Adylinn, Epsilon and Bluff Hill areas. Therefore, no remedial measures are required. 1.3.14 Marimba Park Pump Station Marimba Park pump station is situated in the south west of the City centre and it is located inside the Marimba Park reservoir site. The pumps were commissioned in 1980. The two horizontal centrifugal pumps supply water into the water tower situated nearby. From here, water gravitates to high lying areas. The pumps are installed for parallel operation with normally one pump on duty and the other on standby. However, there is now only one pump and the second pump, motor and starter have been removed. These pumps are operated automatically by a float switch installed in the water tower and linked by radio signal. The particulars of the pumps (1 Duty; 1 Standby) installed in the pump house are as follows: • Make: Unknown • Model: Unknown • Q = 9.55 m3/h • H = 30 m Gauff Ingenieure 1-40 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Table 1-33: Condition Pumps at Marimba Pump Station No Pump Motor Console 1 Operational Operational Operational 2 Removed Removed Removed The table below shows the investment measures required at the Avondale Pump Station. Table 1-34: Proposed Investment Measures at Marimba Pump Station Immediate Medium Term (2020) Long Term (2030) Rehabilitation of pumps complete with Replacement of the most of the motors and starters. installations. Replacement of flow meters, pump control system and valves. 1.3.15 Waterfalls Pump Station The Waterfalls pump station is situated in the south of the City centre. The pump station was reported to have been constructed in the 1970s but it has not been in use for over past 10 years. However, the pumps appear to be intact. The two horizontal centrifugal pumps are supposed to supply water into the water tower situated nearby. The pumps were installed for parallel operation with one pump on duty and the other on standby. Both the pumps, motors and starters appear to be in working order.These pumps were planned to be operated automatically by a float switch installed in the water tower and linked by radio signal. The particulars of the pumps (1Duty and 1Standby) installed in the pump house are as follows: • Make: Worthington • Type: Horizontal split casing • Q = 120 m3/h • H = 30 m Table 1-35: Condition Pumps at Waterfalls Pump Station No Pump Motor Console 1 Operational Operational Operational 2 Operational Operational Operational The table below shows the investment measures required at the Waterfalls Pump Station. Table 1-36: Proposed Investment Measures at Waterfalls Pump Station Immediate Medium Term (2020) Long Term (2030) Rehabilitation of pumps complete with motors and Replacement of the starters. installations. Replacement of flow meters, pump control system and valves. Gauff Ingenieure 1-41 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare 1.3.16 Dzivaresekwa Pump Station Dzivaresekwa Pump Station is situated towards the west of the City. The construction of the Dzivaresekwa pump station commenced in 2012 and to date, it is not complete. Recommended Remedial Measures for Dzivaresekwa Pump Station It is envisaged that Harare Water will complete this pump station and that it will serve for the medium term period.For the long term, it is envisaged that this pump station will not be required as Reservoir 02 will receive water from Mutiny. 1.4 Treated Water Transmission System 1.4.1 Water Supply Zones The zoning criteria of the Greater Harare, as applied in the modelling process, used the existing water supply zones as well as the proposed zones. The zones are independent in the sense that each zone has a dedicated service reservoir. These reservoirs are supplied by transmissions mains. The bulk water transmission pipelines are normally of larger diameter and convey water to these service reservoirs, from where the water is supplied into the WSZ. Each bulk water transmission main supplying the reservoirs are equipped with bulk water meters at the inlet and outlet of the reservoirs. However, the bulk water meters are currently not operational. Consequently, the current water demand was calculate based on the 2012 population figures. This section briefly describes the proposed water zones The demand in each zone was obtained by overlaying the wards layer with the proposed zones layer in ArcView 10.1. The demand in each supply zone was calculated in such a way that the ward that was completely in a particular zone was allocated 100% of its demand to that particular zone. For those wards which shared boundaries between different zones, their demand were subdivided according to the shared boundary in each zone. The following table shows the water supply zones proposed zones, the dedicated storage reservoirs and the estimated water demand requirements in the supply zone. All zones will be equipped with bulk meters for monitoring the inflow from reservoirs into the zones. This is an important aspect of leak detection activities. Table 1-37: Zones and Service Reservoirs Water Supply Zone Storage (m3) 2013 (m3/d) 2020 (m3/d) 2030 (m3/d) Hatcliff 11,400 7,245 15,536 26,401 Kambanji 5680 11,110 8,063 7,348 Philadelphia 7580 5,532 4,056 3,782 Adylinn 1,140 11,281 13,634 21,776 Highlands 61,710 14,369 10,110 8,372 Arundel 7,580 5,989 4,227 3,460 Epsilon 4,090 15,042 10,684 10,939 Bluff Hill 5,680 24,014 16,822 16,401 Emerald Hill 25,750 6,367 4,404 4,098 Greendale 70,770 14,629 11,579 12,257 Gauff Ingenieure 1-42 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Water Supply Zone Storage (m3) 2013 (m3/d) 2020 (m3/d) 2030 (m3/d) Donnybrook 47,460 36,172 34,016 43,738 Alexandra Park 111,950 40,255 28,335 23,968 Ridge Road 3,580 6,617 4,284 3,234 Meyrick Park 2,280 6,367 4,404 4,098 Dzivaresekwa 16,480 17,232 21,784 37,002 Letombo 236,400 101,045 77,404 72,620 Kopje 7,960 33,102 25,914 24,982 Mutiny 11,400 5,973 4,440 4,106 Viking 27,260 17,115 13,751 13,460 Lochinvar 72,160 71,410 55,518 53,573 Ventersburg 22,800 34,478 47,666 50,467 Hatfield 13,610 13,700 13,734 49,663 Marimba Park 34,700 30,990 25,751 24,898 Waterfalls 5,680 24,283 21,355 56,128 Kwadzana 11,940 46,487 43,871 56,192 Shamva RD (Proposed) 2,828 7,452 Mt Pleasant Heights 7718 15,145 Hatcliff Water Supply Zone This WSZ is supplied from the Hatcliff Reservoir with the capacity of 11,400 m3. The Zone covers Hatcliff, Sally Mugabe, part of Sunningdale and Graniteside. The total peak season demand for year 2020 and 2030 in the zone is 15,536 m3/day and 26,401 m3/day respectively. Based on the long-term peak demand, the current combined storage for Hatcliff Reservoirs will not be able to provide 24 hours emergency storage for the long-term scenario. An additional capacity of 16,000 m3 will be required to meet the 2030 peak demand. Kambanji Supply Zone This WSZ is supplied from the Kambanji Reservoir with the capacity of 5,680 m3. The Zone covers Greystone Park Quinnington, Chiltern Hills, Glenwood, Kambanji, Glen Lorne, Grey Lichen and Carrick Creach. The total peak season demand for year 2020 and 2030 in the zone is 8,063 m3/day and 7,348 m3/day respectively. Based on the long-term peak demand, the current combined storage for Kambanji Reservoir will not be able to provide 24 hours emergency storage for the long-term scenario. An additional capacity of 2,000 m3 will be required to meet the 2030 peak demand. Philadelphia Supply Zone This WSZ is supplied from the Philadelphia Reservoir with the capacity of 7,580 m3. The Zone covers Winchendon, Helensvale, Borrowdale Brook, Philadelphia and Eland Park. The total peak season demand for year 2020 and 2030 in the zone is 4,053 m3/day and 3,782 m3/day respectively. Based on the long-term peak demand, the current combined storage for Philadelphia Reservoir will be able to provide 24 hours emergency storage for the long-term scenario. Gauff Ingenieure 1-43 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Adylinn Supply Zone This WSZ is supplied from the Adylinn Reservoir with the capacity of 1,140 m3. The Zone covers New Marlborough and Adylinn areas. The total peak season demand for year 2020 and 2030 in the zone is 13,634 m3/day and 21,776 m3/day respectively. Based on the long- term peak demand, the current combined storage for Adylinn Reservoir will not be able to provide 24 hours emergency storage for the long-term scenario. An additional capacity of 22,000 m3 will be required to meet the 2030 peak demand. Highlands Supply Zone This WSZ is supplied from the Highlands Reservoir with the capacity of 61,710 m3. The Zone covers Borrowdale, Vainona, Pomona, Colray, Borrowdale West, Rietfontein, Colne Valley and Ballantyne Park areas. The total peak season demand for year 2020 and 2030 in the zone is 10,110 m3/day and 8,372 m3/day respectively. Based on the long-term peak demand, the current combined storage for Highlands Reservoir will be able to provide 24 hours emergency storage for the long-term scenario. Arundel Supply Zone This WSZ is supplied from the Arundel Reservoir with the capacity of 7,580 m3. The Zone covers Mount Pleasant, Little Norfolk and Northwood areas. The total peak season demand for year 2020 and 2030 in the zone is 4,227 m3/day and 3,460 m3/day respectively. Based on the long-term peak demand, the current combined storage for Arundel Reservoir will be able to provide 24 hours emergency storage for the long-term scenario. Epsilon Supply Zone This WSZ is supplied from the Epsilon Reservoir with the capacity of 4,090 m3. The Zone covers Marlborough, Avonlea, Emerald Hill and Ashrrittle areas. The total peak season demand for year 2020 and 2030 in the zone is 10,684 m3/day and 10,939 m3/day respectively. Based on the long-term peak demand, the current combined storage for Epsilon Reservoir will not be able to provide 24 hours emergency storage for the long-term scenario. An additional capacity of 7,500 m3 will be required to meet the 2030 peak demand. Bluff Hill Supply Zone This WSZ is supplied from the Bluff Hill Reservoir with the capacity of 5,680 m3. The Zone covers New Bluff Hill, Bluff Hill Park, Ashdown Park and Sanganayi Park areas. The total peak season demand for year 2020 and 2030 in the zone is 16,822 m3/day and 16,401 m3/day respectively. Based on the long-term peak demand, the current combined storage for Bluff Hill Reservoir will not be able to provide 24 hours emergency storage for the long- term scenario. An additional capacity of 12,000 m3 will be required to meet the 2030 peak demand. Emerald HillSupply Zone This WSZ is supplied from the Emerald Hill Reservoir with the capacity of 25,750 m3. The Zone covers Sherwood Park, Sentosa and Mayfield Park areas. The total peak season demand for year 2020 and 2030 in the zone is 4,404 m3/day and 4,098 m3/day respectively. Based on the long-term peak demand, the current combined storage for Emerald Hill Reservoir will be able to provide 24 hours emergency storage for the long-term scenario. Greendale Supply Zone Gauff Ingenieure 1-44 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare This WSZ is supplied from the Greendale Reservoir with the capacity of 70,770 m3. The Zone covers Lewisam, Chisipite, The Grange, Athlone, Mandara, Wormshill, Lichendale, Oval Park, Runnivale and Rhodesvale areas. The total peak season demand for year 2020 and 2030 in the zone is 11,579 m3/day and 12,257 m3/day respectively. Based on the long- term peak demand, the current combined storage for Greendale Reservoir will be able to provide 24 hours emergency storage for the long-term scenario. Donnybrook Supply Zone This WSZ is supplied from the Donnybrook Reservoir with the capacity of 47,460 m3. The Zone covers Mabvuku, Tafara, Chikurubi, Manresa and Chiznanje areas. The total peak season demand for year 2020 and 2030 in the zone is 34,016 m3/day and 43,738 m3/day respectively. Based on the long-term peak demand, the current combined storage for Donnybrook Reservoir will be able to provide 24 hours emergency storage for the long-term scenario. Alexandra Park Supply Zone This WSZ is supplied from the Alexandra Park Reservoir with the capacity of 47,460 m3. The Zone covers Alexandra Park, Avondale, Kensington, Milton Park, Belvedere Park, Strathaven and Avenue areas. The total peak season demand for year 2020 and 2030 in the zone is 28,335 m3/day and 23,968 m3/day respectively. Based on the long-term peak demand, the current combined storage for Alexandra Park Reservoir will be able to provide 24 hours emergency storage for the long-term scenario. Ridge Road Supply Zone This WSZ is supplied from the Ridge Road Reservoir with the capacity of 3,580 m3. The Zone covers Avondale West areas. The total peak season demand for year 2020 and 2030 in the zone is 4,284 m3/day and 3,234 m3/day respectively. Based on the long-term peak demand, the current combined storage for Ridge Road Reservoir will be able to provide 24 hours emergency storage for the long-term scenario. Meyrick Park Supply Zone This WSZ is supplied from the Meyrick Park Reservoir with the capacity of 2,280 m3. The Zone covers St Andrews, Haig Park, Cotswold Hills, Mablereigh, Sunridge, Ridgeway and Sunrise areas. The total peak season demand for year 2020 and 2030 in the zone is 4,404 m3/day and 4,098 m3/day respectively. Based on the long-term peak demand, the current combined storage for Meyrick ParkReservoir will not be able to provide 24 hours emergency storage for the long-term scenario. An additional capacity of 2,000 m3 will be required to meet the 2030 peak demand. Dzivaresekwa Supply Zone This WSZ is supplied from the DzivaresekwaReservoir with the capacity of 16,480 m3. The Zone covers Dzivaresekwa area. The total peak season demand for year 2020 and 2030 in the zone is 21,784 m3/day and 37,002 m3/day respectively. Based on the long-term peak demand, the current combined storage for DzivaresekwaReservoir will not be able to provide 24 hours emergency storage for the long-term scenario. An additional capacity of 22,000 m3 will be required to meet the 2030 peak demand. Gauff Ingenieure 1-45 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Letombo Supply Zone This WSZ is supplied from the Letombo Reservoir with the capacity of 236,400 m3. The Zone covers Sunningdale, Graniteside, Highfield, Ardbennie, Mbare, Prospect, Logan Park, Sunningdale, St Martins, Cranborne Park, Queensdale, Arcadia, Graniteside, Braeside, Hillside, Beverly West, Masasa, Mukuvisi Park, Amby, Bingley, Beverly, Greengrove and Lorelei areas. The total peak season demand for year 2020 and 2030 in the zone is 77,404 m3/day and 72,620 m3/day respectively. Based on the long-term peak demand, the current combined storage for Letombo Reservoir will be able to provide 24 hours emergency storage for the long-term scenario. Kopje Supply Zone This WSZ is supplied from the Kopje Reservoir with the capacity of 7,960 m3. The Zone covers the City Centre area. The total peak season demand for year 2020 and 2030 in the zone is 25,914 m3/day and 24,982 m3/day respectively. Based on the long-term peak demand, the current combined storage for Kopje Reservoir will not be able to provide 24 hours emergency storage for the long-term scenario. An additional capacity of 18,000 m3 will be required to meet the 2030 peak demand. Mutiny Supply Zone This WSZ is supplied from the Mutiny Reservoir with the capacity of 11,400 m3. The Zone covers Warren Park and Warren Park D. The total peak season demand for year 2020 and 2030 in the zone is 4,440 m3/day and 4,106 m3/day respectively. Based on the long-term peak demand, the current combined storage for Mutiny Reservoir will not be able to provide 24 hours emergency storage for the long-term scenario. Viking Supply Zone This WSZ is supplied from the Viking Reservoir with the capacity of 27,260 m3. The Zone covers Workingston, Southerton, Ridgeview, Belvedere South and Lincoln Green areas. The total peak season demand for year 2020 and 2030 in the zone is 13,751 m3/day and 13,460 m3/day respectively. Based on the long-term peak demand, the current combined storage for Viking Reservoir will not be able to provide 24 hours emergency storage for the long-term scenario. Lochinvar Supply Zone This WSZ is supplied from the LochinvarReservoir with the capacity of 72,160 m3. The Zone covers Kambuzuma, Rugare, Marimba Park, Aspindale Park, Lochinvar and Willowvale areas. The total peak season demand for year 2020 and 2030 in the zone is 55,518 m3/day and 53,573 m3/day respectively. Based on the long-term peak demand, the current combined storage for LochinvarReservoir will not be able to provide 24 hours emergency storage for the long-term scenario. Ventersburg Supply Zone This WSZ is supplied from the VentersburgReservoir with the capacity of 22,800 m3. The Zone covers Epworth, Chadcombe, Masasa Park, Mukuvisi and Park Meadowland areas. The total peak season demand for year 2020 and 2030 in the zone is 47,666 m3/day and 50,467 m3/day respectively. Based on the long-term peak demand, the current combined storage for VentersburgReservoir will not be able to provide 24 hours emergency storage Gauff Ingenieure 1-46 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare for the long-term scenario. An additional capacity of 30,000 m3 will be required to meet the 2030 peak demand. Hatfield Supply Zone This WSZ is supplied from the HatfieldReservoir with the capacity of 13,610 m3. The Zone covers Hatfield area. The total peak season demand for year 2020 and 2030 in the zone is 13,734 m3/day and 49,663 m3/day respectively. Based on the long-term peak demand, the current combined storage for HatfieldReservoir will not be able to provide 24 hours emergency storage for the long-term scenario. An additional capacity of 37,000 m3 will be required to meet the 2030 peak demand. Marimba Park Supply Zone This WSZ is supplied from the Marimba ParkReservoir with the capacity of 34,700 m3. The Zone covers Hatfield area. The total peak season demand for year 2020 and 2030 in the zone is 25,751 m3/day and 24,898 m3/day respectively. Based on the long-term peak demand, the current combined storage for Marimba Park Reservoir will be able to provide 24 hours emergency storage for the long-term scenario. Waterfalls Supply Zone This WSZ is supplied from the WaterfallsReservoir with the capacity of 5,680 m3. The Zone covers Houghton Park, Park Town, Malvern, Midlands, Waterfalls, Induna and Brobee Park areas. The total peak season demand for year 2020 and 2030 in the zone is 21,355 m3/day and 56,128 m3/day respectively. Based on the long-term peak demand, the current combined storage for WaterfallsReservoir will not be able to provide 24 hours emergency storage for the long-term scenario. An additional capacity of 51,000 m3 will be required to meet the 2030 peak demand. Kuwadzana Supply Zone This WSZ is supplied from the Kuwadzana Reservoir with the capacity of 11,940 m3. The Zone covers Tynwald, Nkwisi Park, Westlea, Kwadzana, Kwadzana Phase 3, Kwadzana Phase 4 Extension, Crowborough and Crowborough North areas. The total peak season demand for year 2020 and 2030 in the zone is 43,871 m3/day and 56,192 m3/day respectively. Based on the long-term peak demand, the current combined storage for Kuwadzana Reservoir will not be able to provide 24 hours emergency storage for the long- term scenario. An additional capacity of 45,000 m3 will be required to meet the 2030 peak demand. Shamva Road Supply Zone This is a proposed WSZ is supplied from the proposed Shamva RoadReservoir. The Zone will cover part of the Sally Mugabe area. The total peak season demand for year 2020 and 2030 in the zone is 2,828 m3/day and 7,452 m3/day respectively. To provide a 24 hours emergency storage for the long-term scenario, a new concrete reservoir with a capacity of 8,000 m3 will be required to meet the 2030 peak demand. Mt Pleasant Heights Supply Zone This is a proposed WSZ which will be supplied from the Mt Pleasant Heights Reservoir. The Zone will cover the mount Hampden area. The total peak season demand for year 2020 and 2030 in the zone is 7,718 m3/day and 15,145 m3/day respectively. To provide a Gauff Ingenieure 1-47 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare 24 hours emergency storage for the long-term scenario, a new concrete reservoir with a capacity of 8,000 m3 will be required to meet the 2030 peak demand. 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The proposed water supply zones are: • Morton Jaffray and Prince Edward – 685,000 m3/d • Kunzwi – 200,000 m3/d The WRZ would provide the water company with a strategic framework for managing water resources supply and demand management and investment. It describes an area within which the management of supply and demand is largely self-contained (apart from agreed bulk transfers of water). Within the WRZ, supply infrastructure and demand centres are generally integrated to the extent that customers in the WRZ should experience the same risk of supply failure. Consequently all customers share the same level of service. There will be limitations in achieving these requirements within a distribution network but significant numbers of customers should not experience different risks of supply failure within a single WRZ. It is the water companies' responsibility to make sure that their WRZs meet this definition and clearly explain this within their water resources management plan. The proposed water resource for the Greater Harare included Norton, Chitungwiza and Epworth. Figure 1-3 overleaf shows the boundaries of the WRZ. Gauff Ingenieure 1-50 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare 1.4.3 Network Hydraulic Modelling A hydraulic model was constructed in conformity with the proposed restructured network. A primary network grid was laid out for each proposed water resource zone and sized for the medium term (2020) and long term (2030) hydraulic loading. Modelling Parameters A hydraulic model requires several input parameters in order to simulate the actual conditions under which the network will be operating. These parameters are; the physical characteristics of the network and its boundary conditions (pipe roughness, elevations) and the hydraulic loading (Demand). In order to build a realistic representation of the system, the age and material of the mains were considered with the friction factors altered to reflect the material of pipe and the age of pipe. Most mains in Chitungwiza are more than 30 years old. Therefore, it was deemed suitable to assume that the condition of these mains would be poor in places and hence; mains friction factors were increased to help reflect this. The elevations for model junctions and reservoirs were interpolated/extrapolated off the contour dataset obtained from Google Earth. The dataset has contour lines with an elevation interval of five meters. This data is fairly adequate for the purpose of modelling the trunk mains. More accurate surveys for transmission mains and reservoirs will be conducted for the final design phase. The hydraulic loading (water Demand) used for modelling the network has been calculated using population figures taken from the recently published report for the Census 2012 by the Zimbabwe National Statistics Agency (ZIMSTAT) as outlined in Chapter 3. A detailed analysis of demand calculations is outlined in Chapter 5. Different specific consumption figures were applied to the consumer categories to obtain the total consumption. Since the network had to be sized for peak hour demand, the peak hour factors were applied to consumption figures. The demand in each zone was obtained by overlaying the wards layer with the proposed zones layer in ArcView 10.1. The wards lie either completely within a zone or only partially. The extent by which a particular ward is contained in a zone was estimated in terms of percentage. The zone received this percentage of demand for that ward. The wards that fell wholly within a particular zone were allocated 100% to that zone. The various demands from the wards that intersect the zone were aggregated to get the total demand for the zone. Modelling Scenarios Two scenarios were used to depict the worst case operating conditions of the network, as presented in the table below. Table 1-38: Network Modelling Scenarios Scenario Scenario Description Peak factor Scenario 1 Peak hour demand and lowest levels in reservoirs 1.5 Lowest demand during the night time and highest Scenario 2 water levels in reservoirs 0.5 Gauff Ingenieure 1-52 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare The scenarios were simulated with the peak hour demand and lowest levels in reservoirs by multiplying the daily demand with the peak hour demand factor of 2.0 and lowest demand during the night time when the water levels in the reservoir is high. For any network analysis case study, it is important to model the ‘worst-case’ scenario so that all potential issues can be predicted with mitigation measures put in place at the earliest possible opportunity. Results of the Modelling Simulations In the restructured network for the year 2020 and 2030 scenarios, the pressures within the mains are fairly within acceptable limits stipulated in the design criteria. According to national and regional guidelines the minimum pressure should be at least 10 metres (1.0 bars) in the main supplying pipes. On average the normal operating pressure in the transmission mains is around 45mH2O. The velocities experienced within the transmission mains are below the 3.0 m/s stipulated in the inception report. Velocities should normally be kept within certain limits to avoid deposition of sediments on the lower end, and to limit forces on bends and water hammer effects, on the upper end. The economic velocities increase with the diameter of the pipe. The table below shows the pipes that are required in the restructured network for the 2030 design horizon. Table 1-39: Water Transmission Investment Measures Resource Zone Pipeline Diameter Length (m) Warren to Munity and Kuwadzana and DN 600 3,200 Dzivaresekwa DN 900 1,800 DN 700 3,189 Warren to Lochinvar and Marimba DN 350 576 Park DN 400 1,176 DN 500 5,311 Morton Jaffray Existing DN 1500 (Warren-Letombo) to DN 600 2,715 Waterfalls Existing DN 1500 (Warren-Letombo) to DN 600 1,481 Hatfield to Adylinn DN 400 454 DN 450 2,148 DN 650 1,049 Morton Jaffray to Norton (pumping) DN 500 3,861 DN 525 from Ventersburg to Ruwa DN 500 4,050 WTP Ruwa WTP to Ruwa, Mutare RD DN 400 4,000 Ground Tanks Kunzwi Kunzwi Intake to Donnybrook DN 1400 39,432 (pumping in stages) Donnybrook to Ventersburg DN 600 7,086 Donnybrook to Greendale DN 900 9,413 Greendale to Shamva Rd DN 350 12,750 Gauff Ingenieure 1-53 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Resource Zone Pipeline Diameter Length (m) Greendale to Highlands and Crow Hill DN 350 6,303 DN 500 5,353 DN 700 1,658 Prince Edward Prince Edward to Seki DN 600 7,007 1.4.4 System description The City of Harare and surrounding areas are supplied by transmission pipelines from Morton Jaffray and Prince Edward Water Treatment Works. Two 1300 mm pipelines, a 750 mm and a 975 mm pipeline pumps water from Morton Jaffray treated water pumping station to Warren Control ground reservoir. DN 750 mm main conveys water from Morton Jaffray to Lochinvar reservoir. Prince Edward Treatment Works supplies treated water through a 975 mm Ø pipeline to the City of Harare. The main supply point of the city’s water distribution system is the Warren Control pumping station from where most of the city is supplied with treated water. From Warren Control, water is conveyed to 24 reservoirs by four transmission mains. These transmission mains feed directly into the distribution system of the City. The four transmission mains are: • The 800 mm main, supplying the north-west of the City (North-West Main); • The 750 mm main supplying the Alexandra Park reservoir site (Alexandra Main); • The 975 mm main supplying the Letombo system reservoirs (Letombo Main); • The 1000 mm main supplying the south of the City and feeding the Letombo reservoir (Highfield Main). These four transmission mains constitute the backbone of the supply system of the city. They are supported by additional primary mains which form a looped system incorporating the main pumping stations and reservoirs of the water distribution system. The main components of this system are: • Warren Control pumping station; • Letombo reservoirs and pumping station; • Alexandra Park reservoirs and pumping station; • Orange Grove pumping station; • Greendale reservoirs; • Highlandsreservoirs and pumping station. From Warren Control pumping station treated water gets pumped through the Letombo Mains and Highfield Mains to the Letombo reservoirs. The Letombo reservoir site/ pumping station operates as the main supply point of the eastern part of Harare. From there treated water gets transferred by pumping to the reservoirs at Greendale, Ventersburg and Donnybrook. These reservoirs command the eastern areas of Harare. Greendale reservoir gets fed by a second supply source, the Orange Grove pumping station. This pumping station is supplied by two gravity mains a 450 mm Ø and 375 mm Ø from Alexandra Park reservoirs. Gauff Ingenieure 1-54 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare From Warren Control pumping station the Alexandra Park reservoirs are fed by two transmission mains, the 750 mm Ø Alexandra Main and a 600 mm Ø pipe branching off the 975 mm Letombo Main. From Alexandra Park the Highlands reservoirs are fed by pumping through a 525 mm Ø main which gets supported by a 300 mm Ø pumping main from Orange Grove pumping station. The north-east of the city is supplied from the Highlands reservoirs. The north-west of the city is supplied by the 800 mm Ø North-West Main from Warren Control. The reservoirs of Dzivaresekwa, Bluff Hill, Epsilon and Adylinn get supplied by this main. The south-western areas of the city are supplied off the transmission mains from Morton- Jaffray to Warren Control by pumping. In addition the reservoirs at Lochinvar and Marimba are directly fed from this transmission main. 1.4.5 Condition Assessment Letombo Main The Letombo Main conveys water from Warren Control pumping station to Letombo reservoir. This transmission main was built in the early 1960’s to feed Letombo reservoirs, the supply source of the eastern areas of the city. The transmission main consists of 9.5 km of 975 mm steel pipeline and 7 km of 750 mm Ø steel pipeline. The discharge into the transmission main is metered at Warren Control. Through five metered branches this transmission main feeds directly into residential areas, namely: Harare city centre, Alexandra Park area and Hillside/Braeside. The 150 mm branch supplying Belvedere North and the 375 mm Msasa branch are not metered. Therefore, the quantities supplied from Warren Control to Letombo reservoir cannot be quantified. Due to high pressure levels in the pumping main most of the off-takes are equipped with PRV’s to avoid excessive pressure head which unfortunately are not working at the moment and consequently distribution systems fed by these mains are constantly bursting. Highfield Main The Highfield Main conveys water from Warren Control pumping station to the Letombo reservoirs. The transmission main was built in the early 1980’s to provide additional capacity to the Letombo reservoirs. The transmission main consists of 4.8 km bitumen- lined1000 mm Ø steel main and2No parallel750 mm Ø bitumen-linedsteel pipeline, each 6 km long and another 8.5 km 1000 mm Ø bitumen-linedsteel pipeline. At Warren Control the discharge into the transmission main is metered. During times when Prince Edward treatment plant is not operating, Chitungwiza Town gets supplied by the Highfield Main. This transmission main leaves Warren Control as 1000 mm Ø and splits to 2 No. parallel DN 750mm Øpipelines before merging again to one 1000 mm Ø pipeline at SPCA (junction of Seke road and Cranborne Avenue West). The transmission main suppliestreated water to Letombo, Kopje, Waterfalls, Hatfield and Seke (supplying Chitungwiza) reservoirs and feeds directly into the distribution network in the south of Harare. The following high-density residential areas are supplied directly off the pumping main through ten metered branches: Lochinvar, Willowvale, Highfield, Ardbennie, Southerton, Mbare, Prospect, Hatfield, Chadcombe and Queensdale. The 150 mm Ø branch off the transmission main supplying Sunningdale is not metered. Gauff Ingenieure 1-55 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare In addition to the above Main, a parallel pipeline (1500 mm Ø steel, length 19.7km) was laid in 1995 delivering water via pumping from Warren Control to Letombo reservoir. This pipeline is cement-mortar lined with plastic wrapping externally and is in good operational condition. Air valve chamber along DN 1500 pipeline An off-take with faulty flow meter and PRV Alexandra Main The Alexandra Main conveys water from Warren Control pumping station to Alexandra Park reservoir. The main consists of a total length of 10.7 km of 750 mm Ø steel pipeline. Take offsfrom the 750 mm Ø pumping main feed the Mutiny, Meyrick Park, Kopje, Ridge Road, Emerald Hill and Arundel reservoirs. The transmission main was built in the early 1950’s. At Warren Control the discharge into the transmission main is metered by a flow meter. The transmission main pumps directly into the distribution network of Warren Park, Milton Park and Kensington. The supply into Monavale and Kensington is not metered. Due to high pressure levels in the pumping main the branches into the distribution areas are controlled by PRV’s, except the supply areas of Monavale and Kensington. Therefore, nearly 70% of the water pumped into the transmission main gets either supplied into the distribution system of connected areas or fed into service reservoirs before the water reaches the Alexandra Park reservoir site. North-West Main The North-West Main conveys water from Warren Control pumping station to Dzivaresekwa, Bluff Hill, Adylinn and Epsilon reservoirs. The 800 mm Ø steel transmission main was built in the late 1970. The transmission main’s length is about 7.7 km in 800mm Ø, which reduces to 400 mm Ø for about 1 km before the transmission main reaches the Adylinn reservoir site. The discharge into the transmission main is metered at Warren Control. In addition to these areas the transmission main supplies the residential areas of Mablereigh, Ashdown Park and Bluff Hill directly off the pumping main. Gauff Ingenieure 1-56 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Table 1-40: Condition Assessment of the Water Transmission System Component Evaluation Remarks/rehabilitation measures Letombo main, The 150 mm branch supplying Supply and install water Highfield Belvedere North and the 375 mm meters Msasa branch are not metered. Therefore, the quantities supplied from Warren Control to Letombo reservoir cannot be quantified. General Due to high pressure levels in the Replace pressure reducing pumping mains most of the off-takes valves are equipped with PRV’s to avoid excessive pressure head which unfortunately are not working at the moment and consequently distribution systems fed by these mains are constantly bursting. General Most of the transmission pipelines Replace old and damaged are too old; constructed in 1930s pipelines. (Morton Jaffray – Warren Control), 1960’s (Letombo), Highfield - 1980s, Alexandra – 1950s. Hence facing frequent bursts leading to high losses. General The older pipelines’ bitumen lining Replace damaged pipes. and coating worn out. General Some mains are not metered, while Replace faulty water meters existing meters are not working. and install new ones on main pipelines. General Alexandra main: 70% of the water Reduce and/or meter off- pumped into the transmission main takes from the transmission gets either supplied into the mains. distribution system of connected areas or fed into service reservoirs before the water reaches the Alexandra Park reservoir site. General Some lines have not been Newly constructed pipelines commissioned since construction – should be commissioned and e.g. 400 mm dia. AC pipeline to handed over to Harare Dzivaresekwa tank. Water. Letombo pumping Transmission pipeline from Letombo Replace the smaller diameter main to Donnybrook pump station changes from DN 600 pipelines that are prone to to 4No. Pipelines of different bursting with a larger diameters (150mm AC, 225mm AC, diameter pipeline of higher 300mm AC and 450mm AC). All pressure class. these smaller diameter pipelines are prone to frequent bursts reportedly due to lower class material. It was also reported that the pumps at Letombo booster station have since been upgraded to deliver higher flow but the pipelines were not changed. Valve chambers Some valve chambers are broken. Reconstruct broken valve chambers. Some valve chambers have broken Replace missing or broken Gauff Ingenieure 1-57 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Component Evaluation Remarks/rehabilitation measures or missing covers. covers. Several chambers have debris and Clean valve chambers. water in them. Air valves Most of them are faulty Replace faulty Air valves. Washout valves Several are stuck and gland packing Clean and service washout damaged. valves. Replace faulty ones. Water meters Majority of water meters are either Replace water meters. faulty or have been vandalized or Construct lockable missing. chambers. Pressure reducing In general, most PRVs are not in Replace all pressure valves (PRVs) good operational condition. reducing valves Gauff Ingenieure 1-58 275000 280000 285000 290000 295000 300000 305000 310000 8045000 8045000 Figure 1-4 Layout Map of Existing Water Supply System HARARE 200AC U Hill Hogerty T Hogerty Hill Mt Pleasant Heights Reservoir(s) Reservoir Zone 300AC T U Reservoir(s) U T ± 200A C Philadelphia Borrowdale Brooke Reservoir(s) Reservoir(s) ¬ U T " ! U T ¬ " ! 8040000 8040000 C 0A Philadelphia 35 Reservoir Zone T 5S 37 C 5A 22 ¬ " ! 1:55,000 C 22 5A C Kambanji C 5A 5A 22 Reservoir Zone T 22 5S Adylinn 37 C 225A Reservoir Zone New Adylinn Reservoir(s) Epsilon Arundel Kambanji Reservoir(s) 15 0A Legend 300AC C T U Reservoir Zone Reservoir Zone U T C ¬ " ! Booster Stations 8035000 8035000 Adylinn 375AC 5A Westgate 225 37 300AC Reservoir(s)Reservoir(s) ST U T U T 375AC Highlands T U Reservoirs Arundel Reservoir(s) Reservoir Zone C U T Water Mains 300AC 5A 150AC 22 225AC Episilon C 450A 225 Reservoir(s) River / Stream AC 375AC 300AC U T 22 5A C 30 5A C 0A 22 C 30 Emerald Hill 0A Residential Roads C T 0S Bluff Hill 300AC 225AC 40 225A C Reservoir(s) Reservoir Zone ¬ U T " !" ! T U ¬Emerald Hill 800ST Trunk/Primary Roads AC 250ST 375S 150 T Reservoir(s) ¬ " 20 ! Bluff Hill ¬ 0A " 225AC ! 37 C 5A Rail Line C 300AC 525 Reservoir Zone T 450S AC 225AC 300ST 300A C 30 C 5A 0A 37 C 400ST C C Highlands 0A 0A 20 30 30 0A Reservoir(s) Ridge Road C U T C 400ST 375ST 37 0A ¬ " ! T Dzivaresekwa High 0S 5S 45 T 30 U Reservoir T T Reservoir(s) 225ST 22 Zone 5S ¬ C " 5A 225A 52 ! T VC 5S C U T 52 5P 22 5A 31 C C AC 225AC 5A 225 Alexandra Park 37 375ST 450AC Reservoir(s) ¬ ¬ " ! " ! Dzivaresekwa Low 250PVC U T 300 AC C 0A 300AC 37 40 Reservoir(s) 5S T 52 5S Greendale 30 375AC T U T 0A Reservoir(s) C T U Greendale ST Meyrick Park 300 Meyrick Park T Reservoir(s) Alexandra Park Reservoir Zone 8030000 8030000 VC U 0P C Chikurubi 10 0A Dzivaresekwa 30 Reservoir Zone Reservoir Zone C Reservoir(s) 0A 15 22 Reservoir Zone 5A C U T 200 AC 600ST 300ST T 300S 225S T 600S T 225S T 525S Kuwadzana Donnybrook 800ST T Reservoir(s) T 300S U T T Reservoir Zone 0S 400ST 250P 225A 75 VC C Kuwadzana Ext T 300AC 5S Reservoir(s) 225S T 52 U T Kuwadzana Donny Brook 300A 375S C 975ST Reservoir(s) 0A T C 30 0S 225A C T Reservoir Zone 30 U T 30 C AC 0A 0A ¬ 45 " 450 T ! C 225S 30 450 Mutiny 300ST 0S T AC Reservoir(s) 225A C Letombo U T 225ST Reservoir(s) AC 600ST 300A U T 225 C ¬ 0A Warren Booster Stn & " C ! 400ST T 30 300ST 300S Mutiny T 5S Reservoir(s) 37 750 ST U T To Morton Jeffrey Reservoir Zone Viking 225A C Kopje 225A 30 Water Treatment 0A C C Reservoir(s) T 500ST 300A C 300ST U Zone Reservoir 225S 600 AC U T C 600AC Plant T 375A 525 225AC 600AC Kopje ST 150AC ST Reservoir(s) 450AC Viking 975 300AC 975ST T 225S T 750ST 0ST 0S 130 AC 30 300 Reservoir Zone 600ST 0ST 130 10 ST ZimPhos AC 0A C 300 75 Reservoir(s) 8025000 8025000 150ST 52 10 0A 5A C U T T C 0S AC 450 225 45 ST 22 AC 5A 225 C Sunway City 10 Reservoir(s) 00 225AC T ST 300S 450ST 37 5A U T ¬ " 25 ! 45 C 0A 0S 225 30 C ST T 375 0A C AC 22 C 225AC 225A 30 Letombo 5A 375A 0S C C T Lonchinvar 225A C Ventersburg 300AC 375AC Hatfield Reservoir(s) Reservoir Zone Reservoir(s) Reservoir(s) T T 15 5S 600S U T U T AC C 00 0 22 300ST U T 52 225 5A 300AC 22 5A ST C C 400AC 225AC 45 5A 30 22 ST 00 22 0A C 0A 10 0A 5A 525S C C T 45 C 30 300A 22 C 35 0S 5S 0S T T T 37 5A 300 45 AC C 300 0A C 0A 30 AC C C C Marimba Park 5A 5A C Lochinvar 37 0A T 22 525S 300A 40 C Reservoir(s) C 0A 30 Marimba High 30 U T Reservoir Zone 750ST 0A Reservoir(s) C 300AC Ventersburg 600 525ST U T 300AC AC 225AC T 0S Reservoir Zone 15 Hatfield 300AC 225AC C 225A AC 375 Reservoir Zone C Beacon Tower 0A 300A 30 975ST C 15 Reservoir(s) 0A C 0S 25 T U T 600AC 450 ST 225AC Reservoir Zone 22 5A C 250ST 300AC C 5A 22 300 C 5A 22 AC AC 300ST C 300 Marimba Park 37 5A C 30 0A 225AC Waterfalls Reservoir Zone 375A C Reservoir(s) 8020000 8020000 U T 300S 375AC T 22 5A C C 5A 22 T 0S Waterfalls 30 Reservoir Zone Greater Harare Water and Sanitation Investment Plan 8015000 8015000 0 0.75 1.5 3 4.5 6 To Prince Edward Water Treatment Plant Kilometers 275000 280000 285000 290000 295000 300000 305000 310000 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare 1.5 Storage Reservoirs 1.5.1 Capacity assessment; Condition assessment; proposed investment measures The water supply system of the City of Harare (COH) has 27 treated water reservoir sites. These are covered in the table below: Table 1-41: Treated Water Reservoir Sites in the System Ref. Reservoir Volume T.W.L Meter Outflow(2) Site (m3) (m) Device Ratio (BM/FM)(1) (a) Adylinn 1,140 1519.02 FM 0.76 (b) Alexandra Park 111,950 1538.37 FM 3.10 (c) Arundel 7,580 1532.82 not metered * (d) Bluff Hill 5,680 1506.06 not metered * (e) Donnybrook 36,180 1602.02 BM /FM 5.43 (f) Dzivaresekwa 5,680 1481.50 BM 1.06 (g) Emerald Hill 25,750 1552.39 BM * (h) Epsilon 4,090 1518.86 FM 1.33 (i) Greendale 70,770 1583.76 BM 6.20 (j) Hatfield 13,630 1521.30 BM/ FM 6.80 (k) Highlands 61,740 1568.55 BM * (l) Hogerty Hill 1,140 1600.07 not metered * (m) Kambanji 5,680 1538.75 FM 0.41 (n) Kopje 7,960 1527.27 FM * (o) Kuwadzana (p) Letombo 236,400 1539.51 FM 8.50 (q) Lochinvar 1475.58** not metered * 72,880 1478.05 not metered * (r) Marimba Park 34,400 1463.45 BM * (s) Meyrick Park 2,280 1517.65 FM * (t) Mutiny 11,400 1520.45 FM 2.31 (u) Philadelphia 7,580 1574.40 not metered * (v) Ridge Road 3,410 1531.31 not metered * (w) Ventersburg 22,800 1559.50 FM 5.07 (x) Viking 27,260 1516.73 FM * (y) Waterfalls 5,680 1467.13 not metered * Gauff Ingenieure 1-60 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Ref. Reservoir Volume T.W.L Meter Outflow(2) Site (m3) (m) Device Ratio (BM/FM)(1) Total Volume (m3) 783,060 (Source: Harare Water Study Stage 1) (1) BM=Bulk Water Meter FM=Flow Meter (2) Flow meter ratio is defined as the relationship between the Volume and the flow in or out of the reservoir. * These reservoir sites are not metered, but some of them that are metered do not have enough meters on the inlets or on the outlet, hence the outflow ratios were not calculated. ** The reservoir site has 7 reservoirs of which 4 are inter-connected with a T.W.L of 1475.58 m and the remaining 3 have a T.W.L of 1478.05 m The reservoirs are located between 1,460 m and 1,600 m amsl. The main reservoirs in terms of capacity are Letombo, Alexandra Park, Lochinvar, Greendale and Highlands which together have a storage capacity of approximately 553,740 m3. This is about 70% of the total storage capacity of the water supply system. 1.5.2 Proposed investment measures The table below shows the investment measures required for reservoirs in Harare. Table 1-42: Investment Measures for Reservoirs in Harare Reservoir Site Unit Additional Capacity Comments Adylinn m3 22,000 ADC Epsilon m3 7,500 ADC Bluff Hill m3 12,000 ADC Meyrick Park m3 2,000 ADC Kopje m3 18,000 ADC Ventersberg m3 30,000 ADC Hatfield m3 36,000 ADC Waterfalls m3 50,000 ADC Kuwadzana m3 45,000 ADC Shamva Rd Tank m3 7,500 NR Total 230,000 *ADC – Additional Capacity *NR – New Reservoir 1.6 Distribution Network The function of the distribution pipework is to transfer potable water from storage facilities and pumping stations to the consumer. Distribution pipes can be grouped depending on function and diameter into three groups: • Primary network; • Secondary network and Gauff Ingenieure 1-61 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare • Tertiary network. In general, primary network pipes transfer water from reservoirs and pumping stations into the supply network. Primary network pipes do not usually have connections to individual stands. From primary pipes water gets transferred through secondary distribution pipes to consumer groups. Tertiary pipes are connected to secondary pipes and distribute water to the consumer’s premises. Based on information collected from previous projects carried out by other consultants namely; BCHOD in conjunction with GKW and Hydro-Utilities, the Consultant has collected pipe length and identified pipe material of existing primary (350 to 600 mm) and secondary distribution network pipes (200 to 350) . The results are summarized in the table below. Table 1-43: Existing Primary and Secondary Pipework Diameter Length of Pipes AC Steel Total [mm] [m] [m] [m] 200 6,440 0 6,440 225 148,998 1,820 150,818 250 16,150 2,810 18,960 300 97,294 9,720 107,014 350 7,578 2,700 10,278 375 38,614 3,920 42,534 400 3,490 570 4,060 450 19,383 5,430 24,813 500 3,390 1,565 4,955 525 14,850 6,220 21,070 600 8,702 3,230 11,932 Total 364,889 37,985 402,874 At present about 90% of the primary and secondary pipework is of AC pipes. The remaining pipes are steel. Due to the lack of existing records, the age of pipelines cannot be determined. Due to high pressure levels in the pumping main the areas directly supplied by pumping are controlled by PRV’s. The distribution system of Harare is supplied by both pumped and gravity systems thereby resulting into the following categories; • Zones supplied by pumping, • Zones supplied by gravity, and • Zones supplied by both gravity and pumped systems. At present, due to unmetered gravity mains off reservoir sites and unmetered branches off pumping mains, a water balance calculation cannot be carried out to determine quantities of Gauff Ingenieure 1-62 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare flow in the main grid of the distribution system. Therefore, the quantities of flow described herein should be seen as preliminary results evaluating the available data which was used as a basis for conclusions and recommendations on the proposed water supply scheme. 1.6.1 Gravity System Areas supplied by gravity are concentrated in the west and the east of the city, whereas the areas supplied by pumping are concentrated in the city centre. Presently, 17 out of 24 reservoirs feed into the distribution system. The amount of water distributed is metered but most of the bulk meters are not working. Table 1-44: Gravity Areas Reservoir Supply Area Water Meter Flow (m3/d) Adylinn Adylinn, Marlborough Arundel/ Northwood, Mount Pleasant, Emerald Emerald Hill Hill, Ridge Road, Avondale Donnybrook Mabvuku, Tafara Dzivaresekwa Dzivaresekwa Epsilon Greencroft, Stanbury Park and north of Mablereigh Highlands Hogert Hill Hatcliff Kambanji Kambanji Lochinvar/ Mufakose, Marimba Park, Glen View, Glen Norah, Budiriro; flow to Aspindale Marimba Park Park and Willowvale is not metered Meyrick Park Meyrick Park Mutiny Warren Park Ridge Road Strathaven, Avondale West Ventersburg Epworth Viking Rugare, Westwood, Belvedere South, Ridge View, Workington, Southerton Waterfalls Park Town west, Hoppley Farm, Grobbie Park, Waterfalls Induna Total: 1.6.2 Pumped Areas The city of Harare is supplied mainly by pumping. Off-takes on transmission mains feed directly into the distribution system. These off-takes are equipped with 33 pressure reducing valves (PRVs) in order to reduce excessive pressure levels in the distribution network. Gauff Ingenieure 1-63 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare 1.6.3 Pumped/ Gravity Areas The remaining areas are supplied by pumped and gravity systems. Large areas with high water demands, such as the City Centre, Hatfield and Greendale receive water from both systems. The reservoirs feeding into these areas are Alexandra Park, Greendale, Kopje, Ventersburg and Hatfield. The pumping station feeding into the same areas is Warren Control through the transmission mains Letombo Main and Highfield Main and Letombo pumping station. 1.6.4 District Metering System The City of Harare used to have a comprehensive metering system in operation. Bulk water meters and flow meters were installed to measure weekly flows at outlets/inlets of reservoirs and pumping stations as well as flows in main supply pipes transferring water into individual supply areas of the city. There were 145 meters installed in the water supply system. Out of 145 meters, 11 bulk meters used to be read by the Chitungwiza Council. The remaining 134 meters were under the control of the water workshop of the COH. The bulk and flow meters used to be read on Tuesdays every week by employees of the COH water workshop. 1.6.5 Metered Supply Zones The bulk meter readings taken on site were recorded on pre-printed bulk meter sheets. The pre-printed bulk meter sheets consisted of nine pages. The first six pages listed weekly readings of installed water meters. These pages were sent to the Water and Sewerage Department of the COH for analysing and comparison. The remaining three pages summarized water meter readings of big consumers and townships. These sheets were sent to the City Treasury for comparison with water meter readings sent in by the Housing Department. The following large consumers are read by the water workshop of the COH: • Belvedere Training College, • Chikurubi Prison, • Harare Airport, • Portland Cement, and • Veterinary Research. The water workshop used to read meters which indicated weekly flows into 17 different suburbs of the City outlined below: • Dzivaresekwa; • Epworth; • Glen Norah; • Glen View; • Hatcliff Park; • Highfield; • Kambuzuma; • Kuwadzana; Gauff Ingenieure 1-64 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare • Mabvuku; • Marimba; • Mbare; • Mufakose; • Rugare; • Ruwa; • Tafara; • Warren Park; and • Westwood; The distribution network systems of the above areas are independent of each other. The subdivision of the complex urban distribution network of the COH was established either through closed zone valves, pipe-gaps or unclosed loops. The Housing Department of the COH is reading water meters in the following suburbs of the city: Budiriro, Dzivaresekwa, Glen Norah, Glen View, Hatcliff, Highfield, Kambuzuma, Kuwadzana, Mabvuku, Mbare, Mufakose, Tafara and Warren Park. The City Treasury receives meter readings from the District offices for billing purposes. The inflow to the highlighted areas is controlled with bulk water meters read by the COH water workshop. Assuming that the individual water meters at the consumers’ premises (read by Housing Department) and the bulk water meters (read by the Water Workshop of the COH) installed at the feeding point into the area are in working condition and measure flows properly, then the comparison of water consumed by consumers per supply area with water supplied into the area gives an indication of Unaccounted-for-Water (UfW) in the area. Uncounted for Water is reported to be around 62% and brief calculations conducted by GKW, BCHOD and Hydro-Utilities in 1995 indicated values ranging from 10 to 66 %.This information is not verified therefore must be treated with caution. Unknown interconnections to adjacent supply areas, not registered consumers, incorrect water meter readings, etc. influence the reliability of the data. Therefore, further investigations will have to be carried out to ensure the correctness of the data. The data originating from individual water meters and bulk water meters will be difficult to work with since most of these meters are no longer operational. 1.6.6 Independent Non-Monitored Areas • Budiriro, • Ashdown Park, • Mabelreign, • Meyrick Park, • Bluff Hill, • Mabelreign, • Ardbennie, and • Kambanji Gauff Ingenieure 1-65 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare 1.6.7 Areas outsidethe City Boundaries Harare provides treated water to consumers outside the city boundaries. These areas include neighbouring municipalities and government facilities and are as outlined below; • Chitungwiza • Epworth • Ruwa • Norton • Domboshava • Inkomo Barracks • Chikurubi Complex (within the City boundaries) • Cranborne Barracks (within the City boundaries) All the above areas are supplied from Morton Jaffray WTW or Prince Edward WTW via the Harare distribution system through transmission branches and are further discussed below: Chitungwiza Chitungwiza is situated approximately 20 km to the south of Harare and was formed in 1978 by the amalgamation of three townships outside the city boundaries, Seke, St Marys and Zengeza. The estimated population of Chitungwiza is 354,472 (2012 National Statistics). Water supply in Chitungwiza is controlled by the Chitungwiza Municipality, who purchase bulk water from the COH. The area is supplied either from Prince Edward WTW ( when it operates) along a 375 mmØ, or from a 750 mmØ branch off the 975 mmØ main from Warren Control. The 750 mmØ main reduces to a 525 mmØ from the treatment works to Chitungwiza. The various parts of Chitungwiza are supplied by pumping, via PRV’s, or from the Seke Reservoir, which acts as a floating reservoir for the area. Epworth Epworth is situated to the south-east of the city immediately adjacent to the city boundary. The area is under the control of the Ministry of Local Government, Rural and Urban Development. The population of Epworth is 354,472 (2012 National Statics). Epworth is supplied by a 600mm Ø that comes off the 525mm Ø feeding the Hatfield Reservoir from Ventersburg Reservoir. Ruwa The COH provides a bulk supply to Ruwa Local Board through ZINWA. Supplies to consumers in the area are controlled by the Ruwa Local Board through a 300 mm ØAC gravity pipeline from Ventersberg Reservoir constructed at the end of 1993. The Ruwa water supply system consists of two separate supply lines based on two delivery pipelines from COH namely: A 100 mm ØAC pipeline conveying water to a 250 m3 ground reservoir, before being pumped into a 50 m3 elevated tank, and Gauff Ingenieure 1-66 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare A 300mm ØAC pipeline conveying water to an 80 m3 pump station sump. The water is then transferred to a 1000 m3 ground reservoir and then pumped to a 100 m3 steel modular elevated tank. Zimre Park in Ruwa is also supplied with water from a 525mmØ steel pipeline from Donnybrook reservoir. Norton Norton is located approximately 40km to the west of Harare, to the south of Lake Manyame. Water supplies in Norton are provided by the Norton Town Board. The COH provides a bulk supply to ZINWA who in turn sell the water to the Town Board. Norton obtains treated water through a pumped system and gravity system from Morton Jaffray Treatment Work. The system consists of: • Two 300 mm Ø AC pumping mains connected to the 1000 mm Ø and 750 mm Ø transmission mains from Morton Jaffray to Warren Control. • Two 5000 m3 service reservoirs. • A 600mm Ø gravity main connected to Norton’s reticulation system. Domboshava Domboshava is situated to the north of Harare and acts as a dormitory town. The Zimbabwe Defence Industries (ZDI) is situated near the town and is supplied with water by ZINWA, who receive bulk supply from the COH. The area is supplied from the Philadelphia Reservoir, through a 200 mm Ø AC rising main 14,550 m long into a 500 m3 brick reservoir where it then gravitates through a 150 mm Ø AC pipeline, 1,900 m long to a 1000 m3 ground reservoir. Inkomo Barracks Inkomo Barracks is situated to the north-west of Harare and is controlled by the Ministry of Public Construction and National Housing (MPCNH). A bulk supply is provided by the COH to ZINWA, who then supply water to Inkomo Barracks. Inkomo Barracks is supplied with water via a 400 mm Ø and 350 mm Ø AC pumping main connected to the 1300 mm Ø transmission main from Morton Jaffray Treatment Works to Warren Control. A pumpstation is situated approximately 4 km away from Inkomo, with a 200 m3 reservoir, to pump the water through 350 mm Ø AC pumping main into the 2 x 2000 m3 ground reservoirs. Chikurubi Complex The Chikurubi Complex is located within the city boundary at the north-east perimeter. The COH provide a bulk supply to ZINWA, who in turn service Chikurubi Prison Complex, Police Support Unit and CMED. There are two connections from the COH mains, each connection is 200 mm in Ø and the pipelines deliver water into 2 x 1000 m3 and 1 x 2000 m3 ground reservoirs. The reservoirs supply the first site and water is pumped to the storage facilities of two other sites. Of these two sites one consist of 2 x 500 m3 ground reservoirs and an elevated 500 m3 water tower. The other site consists of a 500 m3ground reservoir and a 500 m3water tower. Gauff Ingenieure 1-67 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Cranborne Barracks Cranborne Barracks is situated within the city boundaries adjacent to Airport Road in the south-east of the city. The COH provides a bulk supply to ZINWA, who in turn supply the Ministries of Public Construction and National Housing, Education, Lands and Water and Defence. There are various 15 mm, 25 mm and 50 mm Ø connections from City of Harare distribution pipes. The connections are metered and read by the City Treasury. Table 1-45: Existing Network Pipes Pipe Size &Material Length (m) Avg. Age ND 375 AC >50 ND 300 AC >50 ND 250 AC >50 ND 225 AC >50 ND 200 AC >50 ND 150 AC >50 ND 163 PVC <30 ND 100 AC >50 ND 110 PVC <30 ND 75 AC >50 ND 63 PVC <30 ND 50 AC >50 Total 1.7 Pilot Zone Investigations The pilot area water and sewer network investigations constitute part of task D in the ToR, which states that “…the water distribution network condition assessment will be done using sampling methods aimed at establishing parameter relationships that can be used to extrapolate network rehabilitation investment requirements.” Hence, the purpose of the pilot area investigations was to assess the condition of the water distribution and sewerage networks and recommend rehabilitation investment measures for the entire system using statistical methods. 1.7.1 Methodology and Approach The pilot area was selected in liaison with the council following the selection criteria specified in the ToR. It was chosen to be conveniently small, but characteristically representative of the entire network so that extrapolations to the entire network could be done with reasonable levels of confidence. The activities carried out in the pilot area and the sequence of operations is shown in the figure below. Gauff Ingenieure 1-68 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare thorough inspection of thorough mapping of all valves, fire hydrants Liaison with the council the water and sewer and other appurtenant to select a pilot area network elements in the installations in the pilot pilot area area excavation , cutting and Selection and testing of Inspection service water inspection of service working water meters meters connection pipe samples spot checks in other areas Extrapolation of results in of the network and the pilot area to come up discussions with Presentation of results to with rehabilitation engineering department to the council identify other problem measures for the entire areas that need attention network Figure 1-5: Sequence of Activities in the Pilot Area The inspections and assessments in the pilot area provided relationships among age, material and condition of the network elements, which were used to extrapolate network rehabilitation investment requirements for the entire network. In addition to investigations in the pilot area, spot checks in other parts of the network were conducted to validate the findings in the pilot area and the subsequent extrapolations. 1.7.2 Location and Characteristic of the Pilot Area Two pilot areas namely; Highfield representing the high density housing category and Cranborne representing the medium density housing category, were chosen for the investigation. Highfield High Density Suburb Highfield was chosen because it is one of the oldest high density suburbs and is densely populated. It was assumed that investigations in the area would fairly represent the condition of the distribution networks and service connections in all high density suburbs. Based on household flow meter testing conducted in the study area, all domestic meters are not working and will need to be replaced. Most flow meters do not register flows, with some completely vandalised. Gauff Ingenieure 1-69 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Highfield is supplied from the Highfield main which is a 4.8 km bitumen lined1000 mm Ø steel main. The water distribution mains within the pilot zone are 75 mm Ø AC.The water network is made up of the elements shown in the figure below: Valves, fire hydrants and Network Pipes Service connections other fittings •390m of ND 75 mm Ø AC •4No CI fire hydrants •136 No 15 mm Ø service pipes •12 no. 100 mm Ø CI gate connections •0 m of 100 mm Ø AC valves •136 Kent water meters, pipes representing 100% •0of 63 mm Ø PVC service coverage and metering Figure 1-6: Network Elements in the Pilot Area (Highfield) The sewer network is made up of 390 m of ND 150 and 553.13m of ND 225 AC pipes laid parallel to the water pipes. Manholes are at approximately 20 m intervals. Figure 1-6 shows the location and characteristics of the pilot area. Cranborne Medium Density Suburb Cranborne was chosen because it is one of the oldest medium density suburbs and isfairly representative of most medium density suburbs.Therefore, it was assumed that investigations in the area would fairly represent the condition of the distribution networks and service connections in all medium density suburbs. Based on household flow meter testing conducted in the study area, all domestic meters are not working and will need to be replaced. Most flow meters do not register flows, with some completely vandalised. Cranborne is supplied from the Letombo main which consists of 9.5 km of 975 mm Ø steel pipeline and 7 km of 750 mm Ø steel pipeline. The water distribution mains within the pilot zone are 75 mm Ø AC. Gauff Ingenieure 1-70 Figure 1-7 ad s Ro Leop Prince Diepp enue Seve Prince po Av Samora old Ta Rekai ert Chite Mache l Road Layout Map of the uth Herb Road nth St ka ad So Edwa Tangwe wira re enue Pilot Area (Water) rd St e Ro et l Av Street ora Mache na Sam reet ris Avenue uth Enterp HARARE Four So Aven ue Machel ue Chinhoyi Samora th ue en o Aven Street Julius Nyerere Way Av n Moy Jaso ra na Street Gle nue w Ro Ave Robert Mugabe Road n da Kau tten eth Ken Ro ± d oa Bisho rR pG aul rte Ave ha nu e C d oa Se R ke er Ro art ad Ch R oad Ro Diepp tte n Ro w Cri ad pp s Ro Ro Road Ch ad Cripps ire e m 1:1,000 dz ba oro Ro Jo ad az sh M ua on Nk Sim om o Ro ad (A 10 irp 0m or tR m oa d) AC 1:30,000 AC m m 75 Legend Water Lines Pilot Zone (Boundary) Pilot Zone (MD) Pilot Zone (MD) AC 22 m 5m m m Streams / Rivers 75 AC Streams / Rivers Landuse Agriculture Business CBD AC m m Industrial 75 Institutional Mining/Quarrying Recreational Residential AC m Road Network m 75 Residential Roads Trunk/Primary Roads Greater Harare Water and Sanitation Investment Plan 0 0.02 0.04 0.08 0.12 0.16 Kilometers Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare 1.7.3 Findings and Recommendations – Water Distribution Network All the network elements in the pilot areas are over 30 years old. There have not been any major rehabilitation or replacement undertakings since the city was developed. In the oldest parts of the city, water pipes and appurtenant structures date as far back as 1940. Water pipes The AC pipes in the study areas appear to be in good condition despite the age – not very surprising considering that AC pipes have a lifespan of 50-70 years. Even though AC pipes undergo gradual degradation in the form of corrosion (i.e., internal calcium leaching due to conveyed water (lower Langelier index = more leaching) and/or external leaching due to groundwater), the council has not reported enough pipe failures to suggest that the pipes need replacement. The exposed pipes from the replaced pipes did indicate that the pipes were in fair condition except for those cracked pipes from presumably too high pressures as shown below. Asbestos Cement (AC) pipe Valves and fire hydrants There were no hydrants in the pilot area. Isolation valves were found randomly installed on the distribution mains. Generally, all the valves are in a bad shape; they are rusty and leaking. Valve chambers are generally in a very poor condition, damaged and filled with stones as shown in the photos below. Furthermore, there are no covers and those that do have, they have been vandalised. Therefore, the conclusion based on the above is that, all network appurtenant fittings and structures must be replaced as most network leakages occur there. Gauff Ingenieure 1-72 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Fire hydrant chamber with marker post Valve chamber (vandalized) Leakages after the meter Significant amount of water is lost after the meter resulting in unnecessary water use/ wastage. If metered, these wastages lead to increased water bills, which may not be paid by the consumers. If unmetered, these wastages result in high NRW levels, as flat rate billing considers only a limited average amount of water usage. Wastage can be reduced and water conservation measures be implemented through rehabilitation of household installations and household education and awareness programs. Even though Household investments are normally not part of project funding, a provision in the investment plan for public awareness campaigns aimed at sensitizing consumers on the motivation and financial benefits associated with investing in internal plumbing repairs is made. It is further recommended that council should make it a policy to fix leaking taps and pass on the costs to the consumers as a way to minimise water losses. Vandalised water meter Testing of flow meter House connections • Service connections are taken off the 75 mmØtertiary mains using cast iron saddles. Each saddle serves 4 ND 20 service connections. Gauff Ingenieure 1-73 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare As can be seen from the photos below, the service connections are heavily corroded and incrusted. This was expected, given that these connections have been in service for over 30 years. Most of the leakages in the network occur on these lines. It is therefore recommend that, all house connections be replaced including the saddles. It is further recommend that, the replacement of service lines should be of HDPE. HDPE house connections have proved to be durable and reliable. HDPE pipes have a smooth internal surface that does not corrode or tuberculate and maintains its flow capability over time. HDPE service connection pipes have a cost benefit associated with their longevity. The polyethylene pipe industry conservatively estimates the service life for HDPE pipes to be 50-100 years. This relates to savings in replacement costs for a long period. Encrusted pipes Testing of consumer water meter Operation and Maintenance Procedures The municipal workshop does not have an operations manual. Operations and maintenance procedures are non-existent. Field visits to various infrastructures in Chitungwiza, plant and evaluation of equipment revealed that there is a major problem relating to the operation and maintenance of equipment and plant. The council currently operates on a reactive basis. There is no scheduled maintenance programme for infrastructure, works or equipment. Examination of the expenditure records reveals that there is no expenditure line, let alone a budget line for routine maintenance, confirming the observation above. The daily operation plan involves resolving customer complaints, attending to reported leakages, sewer overflows, and other reactive repairs at the water treatment works and wastewater treatment works. Furthermore, the engineering department does not have adequate tools and transport to carry out repairs effectively. As a result, reaction time to repair requests is quite long. The available transport is stretched among other technical needs of the department such as road street repairs and solid waste management operations. The consultant also observed that there is no system for record keeping at the Engineering Department – manual or computerised. Further compounding problems are the lack of Operation & Maintenance Manuals for existing Works and equipment. Under the UWSSRP Phase 1 which is under implementation, the Contractor is required to provide O&M Manuals for all new Works and equipment. This will hopefully, be the start of a systematic record Gauff Ingenieure 1-74 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare keeping culture at the department. As part of the investment measures, regarding operation and maintenance, the Consultant proposes the implementation of a computerised record keeping system that will be linked to a broader Computerised Maintenance Management Programme (CMMP). Gauff Ingenieure 1-75 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare 2 SEWERAGE 2.1 Reticulation System 2.1.1 Description of catchment areas Harare is divided into five catchment areas according to the drainage patterns of the city. The existing catchment areas are; Firle or Mukuvisi Catchment Area, Crowborough Catchment Area, Marlborough Catchment Area, Budiriro Catchment Area and Hatcliff Catchment Area. Firle or Mukuvisi Catchment Area Firle or Mukuvisi Catchment Area is a large drainage area which encompasses the low density suburbs of Chisipite, Lewisham, Highland, Newlands, Oval Park, Runnivale, Borrowdale West, Pomona, Vainona, Groombridge, Little Norfolk, Mount Pleasant, North Wood, Gunhill, Worms Hill, Greendale, Dawn Hill, Oval Park, Rhodesville, Masasa, Mukuvisi Park, Beverly, Mukuvisi, Mukuvisi Park, Gleenglove, Beverly West, Amby, Bingley, Athlone, Cranborne Park, Queensdale, Arcadia, Braeside, Chadcombe, Masasa Park, Park Meadows, Hatfield, Graniteside, St Martins, Sunningdale, New Prospect Park, City Centre, the Avenues, Mbare, part of Southerton, Ardbennie, Prospect, Park Town, Malvern, Midlands, Waterfalls, Induna, Grobbie Park, Mbare West, Glen View, Glen Norah, Highfield and Willowvale.The projected average dry weather flow (ADWF) for the catchment area is estimated to be 82,204 m3/day for the 2020 design horizon, and is projected to increase to 85,425m3/day by 2030. Crowborough Catchment Area Sunrise, Sunridge, Avondale West, Sherwood Park, Sentosa, Mayfield Park, Gotsword Hills, Meyrick Park, Strathaven, St Andrews Park, Mablereigh, Monavale, Avondale, Kensington, Alexandra Park, Belvedere North, Milton Park, Lincoln Green, Belvedere South, Ridge View, Workingston, Rugare, Lochinvar, Kambuzuma, New Marimba, Marimba, Mufakose, Crowborough, Crowborough North, Kwadzana, Kwadzana Phase 3, Kwadzana Phase 4 Ext, Glaudina, Dzivaresekwa, Dzivaresekwa Ext, Tynwald North and Sanganayi Park, Bluff Hill, Bluff Park, New Bluff Hill Park, Tynwald, Tynwald South, Nkwisi Park, Westlea, Ashdown Park, Warren Park and Warren Park D and part of the Town Centre. The projected average dry weather flow (ADWF) for the catchment area is estimated to be 73,645 m3/day for the 2020 design horizon, and is projected to increase to 75,625 m3/day by 2030. Budiriro Catchment Area Budiriro Catchment Area comprise of the high density areas of Budiriro 1, 2, 3, 4 and 5. The projected average dry weather flow (ADWF) for the catchment area is estimated to be 15,177 m3/day for the 2020 design horizon, and is projected to increase to 15,684 m3/day by 2030. Marlborough Catchment Area Marlborough Catchment Area consists of the low density of Marlborough, New Marlborough, Adylinn, Emerald Hill, Ashrrittle and Avonlea. The projected average dry weather flow (ADWF) for the catchment area is estimated to be 4,325 m3/day for the 2020 design horizon, and is projected to increase to 4,724 m3/day by 2030. Gauff Ingenieure 2-76 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Hatcliff Catchment Area Hatcliff Catchment Area encompasses low density areas of Philadelphia, Borrowdale Brook, and Hogertt Hill part of Carrick Creach. The catchment also consists of the High density area of Hatcliff. The projected average dry weather flow (ADWF) for the catchment area is estimated to be 4,391 m3/day for the 2020 design horizon, and is projected to increase to 6,396 m3/day by 2030. 2.1.2 System description The sewer shades within the City Harare are as described in the previous section. The following paragraphs give a brief description of the sewerage network system in each catchment area. Firle or Mukuvisi Catchment Area The collector mains carrying influent flows from this catchment area ranges from 150 mm Ø to 1400 mm Ø mains. The table below gives detailed sewerage system description in the contributing suburbs within the Firle Catchment Area. Table 2-1: Systems Description in each Suburb in Firle Catchment Area Suburbs covered System Description Wastewater from these areas is pumped via a 200 mm Ø AC to a Transition Chamber in Highlands. The influent gravitates from the Transition Chamber via the 375 mm Ø RC main into a 450 mm Ø RC pipe which Chisipite and Lewisham subsequently discharges into the 750 mm Ø RC main. The 750 mm Ø main discharges into a 900 mm Ø AC main which also discharges into one of the 1400 mm Ø twin collector main. The 1400 mm Ø collector main discharges into the Firle WWTW. Wastewater from these areas discharge into a 450 mm Ø RC pipe which subsequently discharges into the 750 Highland, part of Newlands, Oval Park mm Ø RC main. The 750 mm Ø main discharges into a and Runnivale 900 mm Ø AC main which also discharges into one of the 1400 mm Ø twin collector main. The 1400 mm Ø collector main discharges into the Firle WWTW. Wastewater from these areas is pumped via a 300 mm Ø AC to a Transition Chamber in Gunhill. The influent gravitates from the Transition Chamber via the 450 mm Borrowdale West, Pomona, Vainona, Ø RC main. The 450 mm Ø RC main discharges into Groombridge, Little Norfolk, Mount the 675 mm Ø RC main.The 675 mm Ø main discharge Pleasant and North Wood into one of the 1400 mm Ø twin collector main. The 1400 mm Ø collector main discharges into the Firle WWTW. The influent from these areas gravitates from the Gunhill and part of Newlands Transition Chamber via the 450 mm Ø RC main. The 450 mm Ø RC main discharges into the 675 mm Ø RC Gauff Ingenieure 2-77 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Suburbs covered System Description main.The 675 mm Ø main discharge into one of the 1400 mm Ø twin collector main. The 1400 mm Ø collector main discharges into the Firle WWTW. Wastewater from these areas discharge a 315 mm Ø PVC main which subsequently discharge into the 450 mm Ø RC main. The 450 mm Ø RC main discharges Worms Hill, Greendale, Dawn Hill, Oval into the 675 mm Ø RC main.The 675 mm Ø main Park and Rhodesville discharge into one of the 1400 mm Ø twin collector main. The 1400 mm Ø collector main discharges into the Firle WWTW. Wastewater from these areas discharge a 375 mm Ø RC main which subsequently discharge into the 525 Masasa, Mukuvisi Park, Beverly, mm Ø RC main and then into a 600 mm Ø RC main. Mukuvisi, Mukuvisi Park, Gleenglove, The 600 mm Ø RC main discharges into the 750 mm Ø Beverly West, Amby, Bingley and RC main.The 750 mm Ø main discharge into one of the Athlone 1400 mm Ø twin collector main. The 1400 mm Ø collector main discharges into the Firle WWTW. Wastewater from these area discharge a 675 mm Ø Cranborne Park, Queensdale, Arcadia RC main.The 675 mm Ø main discharge into one of the and Braeside 1400 mm Ø twin collector main. The 1400 mm Ø collector main discharges into the Firle WWTW. Wastewater from these areas discharge a 375 mm Ø RC main which subsequently discharge into the 525 Chadcombe, Masasa Park, Park mm Ø RC main. The 525 mm Ø main discharge into Meadows and Hatfield one of the 1400 mm Ø twin collector main. The 1400 mm Ø collector main discharges into the Firle WWTW. Wastewater from these areas discharge into two directions. Graniteside drains directly into the 1400 mm Ø collector main discharges into the Firle WWTW 1400 Graniteside, St Martins, Sunningdale mm while Sunningdale, St Martins and New Prospects and New Prospect Park area drains into the 675 mm Ø main, which also discharges into one of the 1400 mm Ø twin collector main. The 1400 mm Ø collector main discharges into the Firle WWTW. Wastewater from these areas discharge into two mains. The 525 mm Ø RC main collecting wastewater from the town centre and the 750 mm Ø RC main collecting the wastewater from the avenues. The 525 City Centre and the Avenues mm Ø RC main discharges into a 750 mm Ø RC main which in turn discharges into the 1400 mm Ø RC collector main to Firle WWTW. The 750 mm also discharges into another twin 1400 mm Ø RC collector main to the Firle WWTW. Gauff Ingenieure 2-78 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Suburbs covered System Description Wastewater from this area discharges into the 1400 Mbare mm Ø RC collector main to the Firle WWTW. Wastewater from these areas is discharges a 375 mm Ø RC main which subsequently discharge into the 600 Part of Southerton mm Ø RC main. The 600 mm Ø main discharge into one of the 1400 mm Ø twin collector main which in turn discharges into the Firle WWTW. Wastewater from this areadischarges into two mains directions, the North Eastern part discharges into a 375 mm Ø RC main which in turn discharge into the 1400 Ardbennie mm Ø RC collector main. The other parts other parts of the suburb discharges into the 1400 mm Ø RC collector main to the Firle WWTW. Wastewater from theseareas discharge into a 300 mm Prospect and Park Town Ø RC main which in turn discharge into the 1400 mm Ø RC collector main to the Firle WWTW. Malvern, Midlands, Waterfalls, Induna, Wastewater from theseareas discharge into the 1400 Grobbie Park and Mbare West mm Ø RC collector main to the Firle WWTW Wastewater from this area discharges into a 300 mm Ø AC main which in turn discharge into a 375 mm Ø AC main. The 375 mm Ø AC main in turn discharges into Glen View the 450 mm Ø AC collector main. The influent from the 450 mm Ø AC main discharges into the 675 mm Ø AC collector main to the Firle WWTW. Wastewater from this area discharges into two mains directions, the North part discharges into a 300 mm Ø Glen Norah AC. The Southern part discharges into 450 mm Ø RC main. Both mains discharge into the 1400 mm Ø RC collector main to the Firle WWTW. Wastewater from this area discharges into two 375 mm Ø RC mains. Both mains merge downstream a 375 mm Highfield Ø RC before joining the 1400 mm Ø RC collector main to the Firle WWTW. Wastewater from this area discharges into a 450 mm Ø RC main which in turn discharge into a 525 mm Ø RC Willowvale main. The 525 mm Ø RC main in turn discharges into the 675 mm Ø RC collector main which discharges into the Firle WWTW. Gauff Ingenieure 2-79 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Crowborough Catchment Area The collector mains carrying influent flows from this catchment area ranges from 150 mm Ø to 1400 mm Ø mains. The table below gives detailed sewerage system description in the contributing suburbs within the Crowborough Catchment Area. Table 2-2: Systems Description in each Suburb in Crowborough Catchment Area Suburbs covered System Description Sunrise, Sunridge, Avondale West, Wastewater from these areasdischarge into two mains; Sherwood Park, Sentosa, Mayfield a 315 mm Ø PVC and 525 mm Ø RC mains. The Park, Gotsword Hills, Meyrick Park, mains join downstream into a 900 mm Ø RC main also Strathaven, St Andrews Park, discharges into the Crowborough WWTW. Mablereigh and Monavale Wastewater from these areas discharges into two mains 315 mm Ø PVC mains. The mains join Avondale, Kensington and Alexandra downstream into a 450 mm Ø RC main also discharges Park into one of the 900 mm Ø twin collector main. The 900 mm Ø collector main discharges into the Crowborough WWTW. Wastewater from these areas discharge into a 450 mm Belvedere North, Milton Park and Ø RC main. The 450 mm Ø RC main discharge into a Lincoln Green 900 mm Ø RC twin main which discharge into the Crowborough WWTW. Wastewater from these areas discharge into a 315 mm Ø PVC main which in turn discharge into a 450 mm Ø Belvedere South, Ridge View and RC main. The 450 mm Ø RC main discharge into a 900 Workingston mm Ø RC twin main which discharge into the Crowborough WWTW. Wastewater from thisarea discharge into a 450 mm Ø RC main. The 450 mm Ø RC main discharge into a 900 Rugare mm Ø RC twin main which discharge into the Crowborough WWTW. Wastewater from these areas discharge into a 300 mm Ø PVC main. The 300 mm Ø PVC main discharge into Lochinvar and Kambuzuma a 900 mm Ø RC twin main which discharge into the Crowborough WWTW. Wastewater from these areas discharge into a 300 mm Ø AC main. The 300 mm Ø AC main discharge into a New Marimba and Marimba 900 mm Ø RC twin main which discharge into the Crowborough WWTW. Wastewater from this area discharges into a 315 mm Ø Mufakose PVC and 600 mm Ø RC mains. The 315 mm Ø PVC main discharges directly into Crowborough WWTW. The 600 mm Ø RC discharges into the 900 mm Ø RC Gauff Ingenieure 2-80 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Suburbs covered System Description which in turn discharges into the Crowborough WWTW. Wastewater from these areas discharge into a 300 mm Ø AC main. The 300 mm Ø AC main discharges into a Crowborough and Crowborough North 900 mm Ø RC twin main which discharge into the Crowborough WWTW. Kwadzana, Kwadzana Phase 3, Wastewater from these areas discharge into a 600 mm Kwadzana Phase 4 Ext, Glaudina, Ø AC main which in turn discharges into the Dzivaresekwa, Dzivaresekwa Ext, Crowborough WWTW. Tynwald North and Sanganayi Park, Bluff Hill, Bluff Park and New Bluff Hill Park Wastewater from these areas discharge into a 450 mm Tynwald, Tynwald South, Nkwisi Park, Ø RC main. The 450 mm Ø RC main discharges into a Westlea, Ashdown Park and Warren 900 mm Ø RC twin main which discharge into the Park D Crowborough WWTW. Wastewater from these areas discharge into a 900 mm Warren Park Ø RC twin main which discharge into the Crowborough WWTW. Budiriro Catchment Area The collector mains carrying influent flows from this catchment area ranges from 300 mm Ø to 675 mm Ø mains. The table below gives detailed sewerage system description in the contributing suburbs within the Budiriro Catchment Area. Table 2-3: Systems Description in each Suburb in Budiriro Catchment Area Suburbs covered System Description Wastewater from these areas discharge into two mains 375 mm Ø RC main which in turn discharges into a 450 Budiriro 1, 2 and 3 mm Ø RC main. The 450 mm Ø RC main discharges into a 675 mm Ø collector main. The 675 mm Ø collector main discharges into the Firle WWTW Wastewater from these areas discharges into a 450 mm Ø RC to Budiriro Pump Station. From here, the Budiriro 4 and 5 influent is pumped to Firle WWTW via a 675 mm Ø RC collector main. Marlborough Catchment Area The collector mains carrying influent flows from this catchment area ranges from 300 mm Ø to 450 mm Ø mains. The table below gives detailed sewerage system description in the contributing suburbs within the Marlborough Catchment Area. Gauff Ingenieure 2-81 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Table 2-4: Systems Description in each Suburb in Marlborough Catchment Area Suburbs covered System Description Wastewater from these areas discharge into the Marlborough Pump Station where it is pumped via 375 Avonlea, Ashrrittle and Emerald Hill mm Ø RC main into the Firle wastewater pipe network. In case of power outages, wastewater from these areas gravitates to the Marlborough WWTW. Wastewater from these areas discharge into a 450 mm Adylinn and Marlborough Ø RC main which discharge into the Marlborough WWTW Wastewater from these areas discharge into a 300 mm New Marlborough Ø AC main which discharge into the Marlborough WWTW Hatcliff Catchment Area The collector mains carrying influent flows from this catchment area ranges from 250 mm Ø to 450 mm Ø mains. The table below gives detailed sewerage system description in the contributing suburbs within the Hatcliff Catchment Area. Table 2-5: Systems Description in each Suburb in Hatcliff Catchment Area Suburbs covered System Description Wastewater from these areas is pumped through a series of Booster Pump Stations into a Transition Hogert Hill, Borrowdale Brook, Chamber in Hatcliff. From here, the wastewater Philadelphia and part of Carrick Creagh gravitates via a 300 mm Ø AC main and then into a 450 mm Ø AC main to the Hatcliff WWTW. Wastewater from this discharges into a 300 mm Ø AC Hatcliff main and then into a 450 mm Ø AC main to the Hatcliff WWTW. 2.1.3 Condition assessment The condition of the critical sewer mains conveying waste water from different suburbs in Harare were accessed with the help of Harare Water Staff. The following are the critical sections inspected during the site visit: • the 1400 mm Ø RC twin mains collecting most of the influent in the Firle or Mukuvisi Catchment; • the 600 mm Ø AC main collecting most of the influent on the eastern part of the Crowborough Catchment; • the 900 mm Ø RC twin mains collecting most of the influent on the western part of the Crowborough Catchment. The 1400 mm Ø RC Twin Mains Gauff Ingenieure 2-82 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare The 1400 mm Ø RC twin mains colleting waste water in the Mukuvisi Catchment. Assessment of these mains was carried by visual inspection via manholes. The main seem to be in good condition. However, the benching indicated some corrosion. The mains will require rehabilitation in a long term (2030). The figure below shows the condition of the manholes on the 1400 mm Ø RC twin mains. Condition of manholes on the 1400 mm Ø RC mains The 600 mm Ø AC Main The 600 mm Ø AC main collects waste water from the eastern section of the Crowborough Catchment Area such as Kwadzana, Glaudina, Dzivaresekwa, Tynwald North Sanganayi Park and Bluff Hill. Assessment of this main was carried out by visual inspection of the manholes and on specific sections of the pipe. The pipe is currently surging and has collapsed at the downstream end. The entire section of main is required to be replaced and upgraded. The figure below shows the condition of the manholes and collapsed sections on the 600 mm Ø ACmain. Collapsed section of the 600 mm Ø AC and state of Manholes on the main The 900 mm RC Twin Mains The 900 mm Ø RC twin mains collects the influent from the western part of Crowborough Catchment. Assessment of these mains was carried out by visual inspection of the Gauff Ingenieure 2-83 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare manholes and the pipe bridge upstream of the Crowborough WWTW. The steel pipes on the pipe bridge are severely corroded and damaged, and all the influent from one of the 900 mm Ø is surcharging into the stream. Consequently, about 5,000 m of the 900 mm Ø does not convey any waste water and is in effect, abandoned. Part of the influent from the other 900 mm Ø RC main discharges into the river, the rest discharges into the Crowborough WWTW. The steel pipes pipe bridge and the 5,000 m length of the 900 mm Ø RC downstream of the pipe bridge that is currently abandoned due to the influent surcharging into the stream needs to be replace and upgraded. The figure below shows the condition of the manholes and damaged pipes on Pipe Bridge. 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A primary network grid was laid out for each proposed zone and sized for the medium term (2020) and long term (2030) hydraulic loading. Modelling Parameters A hydraulic model requires several input parameters in order to simulate the actual conditions under which the network will be operating. These parameters are; the physical characteristics of the network and its boundary conditions (pipe roughness, manhole inverts) and the sewer loading. In order to build a realistic representation of the system, the age and material of the mains were considered with the friction factors altered to reflect the material of pipe and the age of pipe. Most of the mains in Harare are in excess of 30 years old, therefore, it was deemed suitable to assume that the condition of these mains would be poor in places and hence; mains friction factors were increased to help reflect this. The invert levels of the manholes on the collector mains were interpolated/extrapolated off the contour dataset obtained from Google Earth. The dataset has contour lines with an elevation interval of five meters. This data is fairly adequate for the purpose of higher level modelling of collector mains. More accurate surveys for collector mains, pump stations and ponds will be conducted for the final design. The hydraulic loading (Sewer Flow) used for modelling the network has been calculated using population figures taken from the recently published report for the Census 2012 by the Zimbabwe National Statistics Agency (ZIMSTAT) as outlined in Chapter 3. A detailed analysis of the sewer loading calculations is outlined in Chapter 5. The sewer flow loading in each catchment area was obtained by overlaying the wards layer with the catchment areas layer in ArcView 10.1. The wards lie either completely within a zone or only partially. The extent by which a particular ward is contained in a zone was estimated in terms of percentage. The catchment area received this percentage of demand for that ward. The wards that fell wholly within a particular catchment area were allocated 100% to that zone. The various flow loads from the wards that intersect the zone were aggregated to get the total demand for the catchment. Modelling Scenarios The restructured network was simulated using the daily peak demand of 2.0. The peak hour factor was added to the model and the impact towards the performance of the collectors mains analysed. For any network analysis case study, it is important to model the ‘worst-case’ scenario so that all potential issues can be predicted with mitigation measures put in place at the earliest possible opportunity. The calculated peak hour flow in each catchment area is tabulated in the table overleaf. Gauff Ingenieure 2-86 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Table 2-6: Peak Hour Sewer Flow for Proposed Catchment Areas- Harare Scenario Catchment Area Unit Average Daily Peak Peak Hour Demand Demand Factor 2020 2030 2020 2030 Factor Demand Demand Demand Demand Firle or Mukuvisi m3/day 82,204 85,425 2.0 164,408 170,850 Crowborough m3/day 73,645 75,625 2.0 147,289 151,251 Scenario Marlborough m3/day 4,325 4,724 2.0 8,649 9,449 Budiriro m3/day 15,177 15,684 2.0 30,353 31,368 Hatcliff m3/day 4,391 6,396 2.0 8,782 12,791 Results of the Modelling Simulations In the restructured network for the year 2030 scenarios, the observed velocities within the collector mains were fairly within acceptable limits stipulated in the design criteria except for the mains highlighted in redin the figure below. Figure 2-2: Surged Sewer Mains Highlighted in Red These mains surcharged during the simulation. The maximum flow ratio and maximum depth of over 1.0 experienced in these sections of mains, indicates that pipes are running at full bore and as such, the hydraulic grade line was above the diameter of the pipe. This indicates that, these sections of mains do not have enough hydraulic capacity to handle the demand for the 2030 scenario and needs to be upsized. Gauff Ingenieure 2-87 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare A further simulation was performed in an attempt to find the optimal upgrades required to provide adequate levels of service. It is hoped that these changes to the network would help to reduce the surcharge experienced during the simulation.Table below shows the sections of mains that surcharged during the simulation and the recommended upgrades. Table 2-7: Sewer Trunk Upgrade Measures Section Pipe (mm) Length (m) Upgrade Pipe (mm) Material Avenues 225 2826 450 PVC Kuwadzana Phase 3 250 1104 450 PVC Borrowdale West 300 3072 450 PVC Budiriro 300 990 450 PVC Crowborough North 300 1612 525 RC Glen North 300 1925 450 PVC Glenview 300 429 450 RC Kambuzuma 300 2071 525 RC Lochinvar 300 1877 525 RC Marlborough 315 414 450 PVC Mufakose 315 1598 450 PVC St Andrews Park 315 2071 450 PVC Willowvale 315 784 450 PVC Budiriro 375 1756 450 PVC Highfield 375 1807 525 RC Mbare 375 1400 525 RC Willowvale 375 1662 450 PVC Braeside/Hillside 450 1821 525 RC Budiriro 450 1632 600 RC Dzivaresekwa 450 1007 600 RC Warren Park D 450 1541 525 RC Willowvale 450 1389 525 RC Budiriro 525 984 600 RC Budiriro 525 1419 600 RC Willowvale 525 1490 675 RC Dzivaresekwa 600 1659 825 RC Dzivaresekwa 600 6755 900 RC Braeside/Hillside 675 1951 750 RC Willowvale 675 945 750 RC Willowvale 675 1728 825 RC Willowvale 675 301 875 RC Crowborough North 900 2905 1050 RC Outfall - Crowborough 900 197 1200 RC To maintain self-cleaning velocities in the sewers a minimum velocity of 0.5 m/s is recommended and to prevent scour a maximum velocity range of 5-12 m/s is recommended, depending on the material. To follow the conservative approach a maximum velocity of 5 m/s is chosen for all materials, even if studies have shown that erosion effects observed at velocities greater than 4 m/s are only minimal. Gauff Ingenieure 2-88 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare The maximum velocities experienced within the collector mains are below the 2 m/s stipulated in the inception report and above the 0.75m/s recommended for self-cleansing velocity. Pipes at the selected gradient should be capable of conveying the ultimate flows and give minimum velocities at peak daily flow. 2.2 Sewage Pump Stations The waste water distribution network of the City of Harare consists of 8 booster stations for the conveyance of waste water. The following sections give a summary of the pump stations and the proposed investment measures required for the medium and long term. 2.2.1 Avonlea Sewerage Pump Station The Avonlea pump station was built in 1950 and is located in the North East of the City centre. Sewerage from Emerald Hill and Avonlea Suburbs flow by gravity into two sumps from where it is pumped to Crowborough WWTP. The pump station consists of a dry well with three vertical centrifugal sewerage pumps, one with a larger capacity and the other two with 50% of the capacity. All the three pumps have the same head. The influent two sumps, each of 29.4 m3 capacity from where it enters the pump suction pipe. The sump has a manually-operated winch retrieval hoist for the removal of solids from the waste water. There is one screen, a penstock gate and a ladder. The following are the details of the pumps at Avonlea Pump station. Larger Capacity Pump (1 No) • Make: APE • Type: Vertical Sewer • Q = 736 m3/h. • H = 38 m • Motor: 90 kW, 380 V Lower Capacity Pumps (2 No) • Make: APE • Type: Vertical Sewer • Q = 368 m3/h. • H = 38 m • Motor: 45 kW, 380 V The table below shows the condition of the pumps, motors and starter consoles. Gauff Ingenieure 2-89 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Table 2-8: Condition Pumps at Avonlea Sewer Pump Station No Pump Motor Console 1 Operational Operational Operational 2 Operational Operational Operational 3 Operational Operational Operational From above table, it can be concluded that all the three pumps including motors and starter consoles are operational. However, because the pump station was not operational for three years, and considering when they were first installed (60 years ago), major rehabilitation/replacement are needed to reinstate the pump station to the design capacity. The table below shows the proposed investment measures at the Avonlea Sewer Pump Station. Table 2-9: Proposed Investment Measures at Letombo Pump Station Immediate Medium Term (2020) Long Term (2030) Replacement of pumps complete with For long term remedial measures, motors and starters. most of equipment which is not Rehabilitation of sumps by desludging, replaced at the medium term repairs of cracks, painting of the safety intervention will need to be railings, replacement of the screens, replaced. The SCADA system shall replacement of the penstock gate, be consolidated and further replacement of the ladder and improved. rehabilitation of the manual hoist. Rehabilitation of suction, delivery and non-return valves, rehabilitation of suction and delivery valves and replacement of NRVs. Installation of air valves, pressure gauges, installation of electric wire rope hoist and switchboards. Reinstatement of small power and lighting and security lights. Replacement of dewatering pump, installation of standby generator, flow meter, installation of level gauges and SCADA system. 2.2.2 New Marlborough Sewerage Pump Station The Marlborough Sewerage Pump Station was reportedly to have been built in 2002. It is located to the North of the City Centre. Sewerage from the surrounding areas flows by gravity into one sump of 3.5m x 3.5m (approx.) from where it is pumped by submersible pumps to the three Marlborough Ponds, situated at a distance of about 1.0 km from the pump station. There are two submersible pumps (1Duty, 1Standby) but the pump specifications could not be confirmed. The table below shows the condition of the pumps, motors and starter consoles. Gauff Ingenieure 2-90 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Table 2-10: Condition Pumps at New Marlborough Sewer Pump Station No Pump Motor Console 1 Operational Operational Operational 2 Operational Operational Operational The table overleaf shows the proposed investment measures at the New Marlborough Sewer Pump Station. Table 2-11: Proposed Investment Measures at New Marlborough Sewer Pump Station Immediate Medium Term (2020) Long Term (2030) Construction of a new pump house, For long term remedial measures, relocation of LV Switchboard and most of equipment which is not starter panels to inside the new pump replaced at the medium term house and replacement of pumps intervention will need to be complete with motors and starters. replaced. The SCADA system shall Rehabilitation of sumps by desludging, be consolidated and further repairs of cracks, painting of the safety improved. railings, replacement of the screens, replacement of the penstock gate, replacement of the ladder and rehabilitation of the manual hoist. Rehabilitation of suction, delivery and non-return valves, rehabilitation of suction and delivery valves and replacement of NRVs. Installation of air valves, pressure gauges, installation of electric wire rope hoist and switchboards. Reinstatement of small power and lighting and security lights. Replacement of dewatering pump, installation of standby generator, flow meter, installation of level gauges and SCADA system. 2.2.3 North East/Mount Pleasant Sewerage Pump Station The North East/Mount Pleasant Pump Station was built in 1975 and is located in the North East of the City Centre. Sewerage from the Mount Pleasant areas flows by gravity into two sumps from where it is pumped for about 2.5 km to Gunhill transition chamber. The influent flows by gravity from this chamber to Firle WWTP. The pump station consists of a dry well with three vertical centrifugal sewerage pumps. Below are the details of the centrifugal sewerage pumps at the North East/Mount Pleasant Pump Station. Pump Details (2Duty and 1Standby) • Make: TWRBA SAN • Model: Cap 250/400 • Type: Vertical Sewer Gauff Ingenieure 2-91 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare • Q = 298 m3/h. • H = 45 m • Motor: 75 kW, 380 V • Suction gate valves: DN 225 • Delivery gate valves: DN 150 with spindles • Non-return valves: DN 150 • Main incomer valve: DN 300 • Main delivery valve: DN 300 The table below shows the condition of the pumps, motors and starter consoles. Table 2-12: Condition Pumps at North East/Mount Pleasant Pump Station No Pump Motor Console 1 Non Operational Non Operational Non Operational 2 Operational Operational Operational 3 Non Operational Non Operational Non Operational The table below shows the proposed investment measures at the New Marlborough Sewer Pump Station. Table 2-13: Proposed Investment Measures at North East/Mount Pleasant Pump Station Immediate Medium Term (2020) Long Term (2030) Rehabilitation of sumps by desludging, For long term remedial measures, repairs of cracks, painting of the safety most of equipment which is not railings, replacement of the screens, replaced at the medium term replacement of the penstock gate, intervention will need to be replacement of the ladder and replaced. The SCADA system shall rehabilitation of the manual hoist. be consolidated and further Rehabilitation of suction, delivery and improved. non-return valves, rehabilitation of suction and delivery valves and replacement of NRVs. Installation of air valves, pressure gauges, installation of electric wire rope hoist and switchboards. Reinstatement of small power and lighting and security lights. Replacement of dewatering pump, installation of standby generator, flow meter, installation of level gauges and SCADA system. 2.2.4 Borrowdale Brook Sewerage Pump Stations The Borrowdale Brook Sewer Pumps Stations, as described here, are four pump stations pumping in series at different locations. The pumps, pumps the influent from Borrowdale Brook, Philadelphia and Hogert to a transition chamber in Hatcliff. These pump stations Gauff Ingenieure 2-92 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare were built in the 1970s and have not worked since 2005.The pumps operate with 1 duty and 1 standby. At the time of the field investigations, PS 01 was completely flooded and could not be accessed. However, Harare Water representative reportedthat all the four pump stations have the same type of immersible pumps (pumps which normally are not submersible but could work in case they get submersed). The following are the details of the pumps at the Borrowdale Brook Sewerage Pump Stations. • Type: Vertical Sewer Immersible • Q = 200 m3/h. • H = 50 m • Motor: 35 kW, 380 V • Suction gate valves: DN 150 • Delivery gate valves: DN 150 • Non-return valves: DN 150 • Main incomer valve: DN 225 • Main delivery valve: DN 225 The table below shows the condition of the pumps, motors and starter consoles. Table 2-14: Condition Pumps at Borrowdale Brooks Pump Stations No Pump Motor Console Pump Station 1 1 Non Operational Non Operational Non Operational 2 Non Operational Non Operational Non Operational Pump Station 2 1 Non Operational Non Operational Non Operational 2 Removed Removed Non Operational Pump Station 3 1 Non Operational Non Operational Non Operational 2 Non Operational Non Operational Non Operational Pump Station 4 Non Operational Non Operational Non Operational Non Operational Non Operational Non Operational From above, it can be concluded that the pumps, motors and starters are not operational. However, due to good security of the pump houses, very few items have been vandalised. Gauff Ingenieure 2-93 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare From the physical examination, it can be concludedthat about 50% of the equipment can be rehabilitated. The four pump stations are reportedly being rehabilitated and upgraded under the Chinese Exim bank Project. However, after the field inspection, the following works are recommended in case the same sizes of pumps are used. If the capacity is to be increased, then pumps with larger capacity and also the pipe works may have to be completely replaced. The table below shows the proposed investment measures at the Borrowdale Brook Sewer Pumps Stations. Table 2-15: Proposed Investment Measures at Borrowdale Brooks Pump Stations Immediate Medium Term (2020) Long Term (2030) Rehabilitation of sumps by desludging, For long term remedial repairs of cracks, painting of the safety measures, most of equipment railings, replacement of the screens, which is not replaced at the replacement of the penstock gate, medium term intervention will replacement of the ladder and rehabilitation need to be replaced. The of the manual hoist. SCADA system shall be Rehabilitation of suction, delivery and non- consolidated and further return valves, rehabilitation of suction and improved. delivery valves and replacement of NRVs. Installation of air valves, pressure gauges, installation of electric wire rope hoist and switchboards. Reinstatement of small power and lighting and security lights. Replacement of dewatering pump, installation of standby generator, flow meter, installation of level gauges and SCADA system. Replacement of ladders and chain blocks. 2.2.5 Donnybrook Sewerage Pump Stations The Donnybrook Sewerage Pump Stations consist of four separate small pumping stations in Donnybrook, situated in the North East of the City Centre. These pump stations pump the waste water to a number of ponds (primary, secondary and tertiary) for eventual delivery to the Vendersburg Farm. There are two primary ponds, two secondary and one tertiary. These pump stations have intake works for the removal of grit before pumping to the ponds. The influent flows by gravity from the following areas: • PS 01: from Old Tafara and parts of Old Mabvuku; • PS02: from New Mabvuku; • PS03: from New Tafara • PS04: from Old Tafara All the four pump houses have been completely vandalised and there is no equipment in these pump houses. In fact, even the building of Pump House No 01 has been removed by vandals. Gauff Ingenieure 2-94 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Harare Water is contemplating of abandoning these small pump houses andbuild one large pump station. However, if the existing scheme is to be rehabilitated, the security in the area must be improved. Pump Details There were three Pump Stations, PS 01, PS 03 and PS 04 are supposed to operate with 2Duty and 1Standby while PS 02 has two pumps (1Duty and 1 Standby). As the pumps and the starters have been vandalised, the only known details are: Type: Horizontal surface pumps; • Estimated capacity: 100 to 150 m3/h; • Suction valves: DN 150 • Delivery valves: DN 100 According to Harare Water, these pump stations will not be needed in future as a new facility is being proposed. However, the table below shows the proposed investment measures at the Donnybrook Pumps Stations in case the same existing scheme needs to be reinstated. Table 2-16: Proposed Investment Measures at Donnybrook Pump Stations Immediate Medium Term (2020) Long Term (2030) Desludging and repairs of cracks at the inlet For long term remedial works. measures, most of equipment Replacement/installation of the screens, which is not replaced at the gate valves, jetting systems, pumps and medium term intervention will motors. need to be replaced. The Rehabilitation of suction, delivery and non- SCADA system shall be return valves, rehabilitation of suction and consolidated and further delivery valves and replacement of NRVs. improved. Installation of air valves, pressure gauges, switchboards. Reinstatement of small power and lighting and security lights. Replacement of dewatering pump, installation of standby generator, flow meter, installation of level gauges and SCADA system. Replacement of ladders and chain blocks. 2.2.6 Budiriro Sewerage Pump Station The Budiriro pump station is located in the south of the City centre. This pump station serves the Budiriro catchment area from where the influent gravitates to the pump house. The influent is pumped from here to Firle WWTP. This pump house was last used in 2006 but it is now undergoing rehabilitation and improvements. The original pumping had three submersible pumps. This has now been modified by the construction of a new pump house with a dry well accommodating horizontal surface pumps. The following shows the details of the newly installed pumps. • Make: Boshan Gauff Ingenieure 2-95 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare • Type: Horizontal Split Casing • Q = 500 m3/h. • H = 60 m • Motor: 132 kW, 380 V • Suction gate valves: DN 300 with spindles • Delivery gate valves: DN 300 with spindles • Non-return valves: DN 300 • Gate valve on main delivery pipe: DN 450 From the hydraulic assessment of the Budiriro catchment areas, it estimated that the catchment would produce the influent loading of circa 660 m3/h in the 2030 design horizon. Based on this, the new pumps would not be adequate for the 2030 design horizon. It is recommended that the old design pump of 750 m3/h be reverted to in the long term. The table below shows the proposed investment measures at the Donnybrook Sewer Pump Stations. Table 2-17: Proposed Investment Measures at Donnybrook Pump Stations Immediate Medium Term (2020) Long Term (2030) Desludging and repairs of cracks at the inlet For long term remedial works. measures, most of equipment Replacement/installation of the screens, which is not replaced at the gate valves, jetting systems, pumps and medium term intervention will motors. need to be replaced. The Rehabilitation of suction, delivery and non- SCADA system shall be return valves, rehabilitation of suction and consolidated and further delivery valves and replacement of NRVs. improved. Installation of air valves, pressure gauges, switchboards. Reinstatement of small power and lighting and security lights. Replacement of dewatering pump, installation of standby generator, flow meter, installation of level gauges and SCADA system. Replacement of ladders and chain blocks. 2.2.7 New Chisipite Sewerage Pump Station A new pump station was constructed in 2007 and the pipework was completed in 2013. However, no pumps were installed at the time of the field visit. The pump station was completely flooded. The pumps are reportedly to have the following parameters: • Q = 240 m3/h • H = 60 m 2.2.8 Old Chisipite Sewerage Pump Station The Old Chisipite Sewerage pump station is located in the north west of the City Centre. The pump station was reportedly built in the 1970s. Gauff Ingenieure 2-96 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare It is a small pump station with an estimated output of about 0.5 ML/D. It collects the influent from the Chisipite area and pumps it to Firle WWTP. The station is equipped with old mono-pumps which are belt-driven. The suction valves are DN 100 and the delivery valves are DN 80. This pump station is planned to be decommissioned and abandoned in the near future since the new plant will soon be in operation. 2.3 Firle WWTW 2.3.1 Description of Fire WWTW Firle sewage treatment works comprises a total of 5 individual wastewater treatment streams with a nominal overall design treatment capacity of 144,000m3/day. The estimated average dry weather flow is reported to vary between 130,000 m3/day and 150,000 m3/day, whereas the wet weather flow is estimated to rise up to approximately 250,000 m3/day. Unit 1 and Unit 2 Units 1 and 2 were commissioned around 1970, and have a nominal design treatment capacity of 18,000 m3/d each. The two units comprise the following; • A common intake works comprising two parallel screen channels equipped with two sets of manually raked coarse and medium screens and corresponding Venturi Flumes, • Six parallel baffled type vertical flow grit chambers with corresponding air-lift type grit removal system including compressor and air-lift pipework, • Each unit has 6 No. circular sedimentation tanks, of the Dortmund tank design, without any sludge scraping device, • Each unit has 4 No. trickling filters 38m in diameter and 4m high, filled with granite rocks, • Each unit has 4 No. circular humus tanks (Final Sedimentations Tanks). Unit 3 Unit 3 is a modified activated sludge process biological reactor commonly known as a BNR with a 5 stage configuration for biological nutrient removal of nitrogen and phosphorous, and was commissioned in 1982 and has a nominal design treatment capacity of 18,000 m3/d. Unit 3 comprises; • A 5 stage biological reactor that includes denitrification and phosphorous removal and treatment of carbonaceous load, • Three number humus tanks. Unit 4 Unit 4 is also a modified activated sludge process biological reactor with a 3-stage configuration for the biological nutrient removal of nitrogen and phosphorous, instead of the 5-stage concept as unit 3. Unit 5 Gauff Ingenieure 2-97 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Unit 5 is a modified activated sludge process biological reactor commissioned in 1996 and has a nominal design treatment capacity of 72,000 m3/day. Unit 5 comprises the following; • Four parallel lines with a nominal design treatment capacity of 18,000 m3/d per line. Pond System Firle Sewage Treatment Works in addition to the above units has 3 No. ponds in series serving all units for additional effluent treatment in order to meet the corresponding standards for land and/or crop irrigation. However, under normal circumstances treated effluent from units 3, 4 and 5 is directly discharged into Mukuvisi River. Effluent Pump Stations Firle Sewage Treatment Works has two separate effluent pump stations: • Existing Effluent Pump Station (EEPS) with a total of six pumps, all of which are not working, • New Effluent Pump Station with a total of four pumps, two of which are operational. Treated effluent from Unit 1 & 2 is discharge on adjacent farms owned by the City of Harare for further purification. 2.3.2 Capacity Assessment of Firle Sewage Treatment Works Based on the water demand and wastewater flow calculations, Firle Catchment is generating less than 144,000 m3/d. Hence, Firle Sewage Works has enough capacity to treat current flows, medium term flows and long term flows as shown in the table below; Table 2-18: Waste Water Loading at Firle WWTW Works Current Flows (Ml/d) 2020 Flows (Ml/d) 2030 Flow (Ml/d) Firle Sewage Works 81.43 82.20 85.43 Unit 1 and Unit 2 Units 1 and 2 have a nominal design treatment capacity of 18,000 m3/d each. Flow measurement and distribution at the works to the various units is not functional hence, Unit 1 and 2 have been assessed based on the nominal design flow; Primary Sedimentation Tanks Each unit has 6 number tanks. However, due to lack of information on these tanks in terms of as built drawings, these have been assumed to be as observed on site; • 12 Number; • 12m in diameter; • Inlet Depth 2m below maximum sewage level; • Outlet depth 0.4m below maximum sewage level. Best Practise design Specification for Circular Tanks is as outlined below; Minimum Retention Time@ peak flow: 1.5 hrs. Upflow Velocity @ peak flow: 2.00 m/hr. Gauff Ingenieure 2-98 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare For a flow of 36 Ml/day (36,000 m3/day) the surface area and volume required for the above to be met will be as outlined in the table below; Total sedimentation surface area required: 750 m2 Maximum capacity: 24,000 m3 Based on the assumed dimensions as paced on site, the existing tanks’ surface area and volume and retention time is as outlined in the tables below; Total sedimentation surface area: 1,356.48 m2 Maximum capacity: 15,192.58 m3 Retention Time@ peak flow: 10.1 hrs. Upflow Velocity @ peak flow: 1.11 m/hr. Therefore, based on the above brief assessment, the Primary Sedimentation Tanks are not hydraulically overloaded. Biological Trickling Filters The two units have the following biological trickling filters with outlined dimensions; • 4 Number each; • 38m in diameter; • 4 m deep, and; • 1m internal radius. Best Practise Design Specification for Mineral Media Trickling Filters is as outlined below; Minimum filter depth: 2m BOD loading rate: 0.12 kgBOD/m3.d Ammoniacal Nitrogen loading rate: 0.02kgNH3-N/m3.d Minimum hydraulic loading rate: 0.75m3/m3.d Maximum wetting rate: 6m3/m2.d Maximum influent BOD concentration: 150 mg/l Maximum influent NH3-N concentration: 25mg/l For the above filters, the total surface area and total filter volume are as outlined in the table below; Total filter surface area: 9,062.04m2 Total filter volume: 36,248.16 m3 Gauff Ingenieure 2-99 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Based on the above dimensions the combined filter performance is as outlined in the table below; Calculated BOD loading rate (incl return liquors@50% of consent): 0.601kgBOD/m3.d Calculated Ammoniacal Nitrogen loading rate (incl return liquors@100% of consent): 0.103kgNH3-N/m3.d Therefore, based on the above brief assessment, the biological trickling filters are hydraulically overloaded and are failing to remove BOD5 and Ammoniacal Nitrogen. It must be noted that, the raw sewage is very strong and BOD5 does exceed the recommended value above. Final Sedimentation Tanks Each unit has 4 number tanks. However, due to lack of information on these tanks in terms of as built drawings, these have been assumed to be as observed on site; • 8 Number; • 23 m in diameter; • Inlet Depth 3.2m below maximum sewage level; • Outlet depth 0.4m below maximum sewage level. Best Practise design Specification for Circular Tanks is as outlined below; Minimum Retention Time@ peak flow: 2 hrs Upflow Velocity @ peak flow: 1.00 m/hr For a flow of 36 Ml/day (36,000 m3/day) the surface area and volume required for the above to be met will be as outlined in the table below; Total sedimentation surface area required: 1,500 m2 Maximum capacity: 3,000 m3 Based on the assumed dimensions as paced on site, the existing tanks’ surface area and volume and retention time is as outlined in the tables below; Total sedimentation surface area: 904.32 m2 Maximum capacity: 1205.76 m3 Retention Time@ peak flow: 1.9 hrs. Upflow Velocity @ peak flow: 0.69 m/hr. Based on the above brief assessment, the Final Sedimentation Tanks are hydraulically overloaded. Gauff Ingenieure 2-100 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Unit 3 This Unit is commonly known as the Bardenpho which comprises of a 5 stage configuration for biological nutrient removal of nitrogen and phosphorous. This is basically a Johannesburg (JHB) process, with the following four stages; pre-anoxic, anaerobic, anoxic, and aerobic zones. An additional anoxic zone at the end of the aerobic zone makes the 5 stage treatment stream. The various stages do achieve the following; • Pre-anoxic zone for denitrification before entering the anaerobic zone. This receives RAS only from the clarifiers, Anaerobic zone for the removal of phosphorus. This receives electron rich influent for the formation of volatile fats acids. Availability of VFAs is crucial to the efficiency of phosphorous release and subsequent uptake of same in the aerobic zone; • Anoxic zone receives nitrate by internal recycle from the aerobic zone; • Aerobic zone completes the utilisation of biodegradable organic matter while ammonium nitrogen is converted to nitrates by the nitrification organisms • The post anoxic zone reduces the oxygen concentration of the mixed liquor and therefore contributes to additional denitrification in the anoxic zone, reducing the nitrate concentration of the recycle and enhances phosphorous release in the anaerobic zone. Based on the design flow of 18,000m3/day the various process units have been assessed as outlined below; Primary Sedimentation Tanks Unit 3 has 4 number tanks. However, due to lack of information on these tanks in terms of as built drawings, these have been assumed to be as observed on site; • 4 Number; • 12m in diameter; • Inlet Depth 2m below maximum sewage level; • Outlet depth 0.4m below maximum sewage level. Best Practise design Specification for Circular Tanks is as outlined overleaf; Minimum Retention Time@ peak flow: 1.5 hrs. Upflow Velocity @ peak flow: 2.00 m/hr. For a flow of 18 Ml/day (18,000 m3/day) the surface area and volume required for the above to be met will be as outlined in the table below; Total sedimentation surface area required: 450 m2 Maximum capacity: 14,400m3 Based on the assumed dimensions as paced on site, the existing tanks’ surface area and volume and retention time is as outlined in the tables below; Total sedimentation surface area: 452.16 m2 Gauff Ingenieure 2-101 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Maximum capacity: 1,688 m3 Retention Time@ peak flow: 3.8 hrs Upflow Velocity @ peak flow: 1 m/hr Based on the above brief assessment, the Primary Sedimentation Tanks are not hydraulically overloaded. Activated Sludge Plant Unit 3 has one basin with a 5 stage treatment process comprising; pre-anoxic, anaerobic, anoxic, and aerobic zones and has the following paced dimensions; • Length of aerator 80 m; • Width of 28.5 m; and • Depth 4.7m. Best Practise Design Specification for an activated sludge plant is as outlined below; F/M ratio: 0.07 d-1 Minimum retention time at peak flow: 3hrs Minimum number of lanes/basins: 2 Design Mixed Liquor suspended solids (MLSS): 2000 to 3000mg/l Minimum Dissolved Oxygen (D.O): 2mg/l Minimum Influent Temperature: 7oC Minimum Surplus Activated Sludge (SAS): 0.75kgDS/kgBOD applied Anoxic Selector: 30mins at DWF+ return liquors SSVI3.5: 125ml/g The F/M ratio can be 0.07d-1 or 0.1d-1 and based on the MLSS of 3kg/m3, 2.5kg/m3 and 2kg/m3 the required volumes at full flow to treatment of 36,599m3/d assuming 50% return liquors will be as outlined in the table below: F/M Ratio of 0.07d-1 MLSS kg/m3 3 2.5 2 Volume required with 48,214 57,857 72,321 PSTs F/M Ratio of 0.1d-1 MLSS kg/m3 3 2.5 2 Volume required with 33,750 40,500 50,625 PSTs Gauff Ingenieure 2-102 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Existing Tank details based on paced dimensions on site are as outlined below for the above criteria; F/M Ratio of 0.07d-1 MLSS kg/m3 3 2.5 2 No of tanks 1 1 1 Tank Length 80 80 80 Tank Width 28.5 28.5 28.5 Tank depth TWL 4.7 4.7 4.7 Total Tank depth 5.95 5.95 5.95 Tank Surface area 1910 1910 1910 Tank Volume 10,716 10,716 10,716 F/M Ratio of 0.1d-1 MLSS kg/m3 3 2.5 2 No of tanks 1 1 1 Tank Length 80 80 80 Tank Width 28.5 28.5 28.5 Tank depth TWL 4.7 4.7 4.7 Total Tank depth 5.95 5.95 5.95 Tank Surface area 1910 1910 1910 Tank Volume 10,716 10,716 10,716 The existing tank is a combined tank with baffle walls separating the anaerobic section from the other sections. Consequently it was very difficult without proper drawings to double check the volumes for the various zones. However, based on the above, the tank volume provided does not meet the above best practise criteria, however, volume provided does meet the minimum retention time at peak flow. Fundamentally Sludge Age or Solids retention time is the basic principle that under-pins the design of activated sludge plants and for the removal of Nitrogen and Phosphorous this parameter must be greater than 15 days. Aeration, F/M ratio which is dependent on the rate of MLSS recirculation and RAS rate are also very fundamental to the success of this technology. Therefore, a check of the Aeration Capacity provided based on Best Practice was conducted and the following came out of the assessment; Actual oxygen requirement (AOR) Actual oxygen requirement 1.6kgO2/kg BOD + (4.5 - (AOR) 0.5x2.8)kgO2/kgNH3-N Gauff Ingenieure 2-103 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare AOR 21431.3 kgO2/d Peaking Factor 2 Best practice AOR 42862.5 kgO2/d 1785.94 kgO2/h Standard oxygen requirement (SOR) SOR AOR*Cstd * Dc α * (q) T-20 * [(t * W * β * Dc * Cstd) - CL] d Water Depth (m) 4.7 m Standard surface saturation 9.07 mg/l dissolved oxygen concentration Cstd (9.07mg/l) Dc Depth Correction Factor (= 1 + 1.15 d * 0.0328) T Temperature 20oC α Ratio of transfer coefficient (KLa) 0.85 Best practice of the wastewater to that of tap water q Temperature correction 1.024 coefficient for KLa t Temperature correction 1.00 coefficient for solubility (= 51.6 / (31.6 + T)) W Site Atmospheric Pressure 1.00 Correction Coefficient β Ratio of oxygen saturation of 0.95 Best practice the wastewater to that of tap water CL Residual dissolved oxygen 2.0 mg/l concentration SOR Ratio of Standard to Actual 2768.43 kgO2/h oxygen transfer rate The Standard Oxygen required for the existing tanks is much higher than the Actual Oxygen required. Based on the above brief assessment, a check of the power that is required for maximum optimum operation was carried out and compared with specifications of installed aerators as gleaned on site since even the operation and maintenance documents of the existing plant could not be found. Gauff Ingenieure 2-104 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Surface Aerators must meet the following specifications although confirmation will be required from suppliers; Standard Oxygen Aerator 1.8 kgO2/kWh Efficiency (SAE) Power Required 1538 kW Motor/Gearbox/Invertor 84% Efficiency Therefore, actual power required will be; Power Required 1538 kW Actual Power Required 1832 kW Aerator per Tank 229 kW Existing Mixers and Aerator power is as outlined in the table below; Mixers ----- kW Aerators -------kW Total Power ------ kW Final Sedimentation Tanks Unit 3 has 3 number tanks. However, due to lack of information on these tanks in terms of as built drawings, these have been assumed to be as observed on site; • 3 Number; • 20m in diameter; • Inlet Depth 2m below maximum sewage level; • Outlet depth 0.4m below maximum sewage level. Best Practise design Specification for Final ASP Circular Tanks is as outlined below; Upflow Velocity @ peak flow: 0.9m/hr Underflow Velocity @ peak flow: 0.5 m/hr Based on the assumed dimensions as paced on site, the existing tanks’ surface area and volume is as outlined in the table below; Total sedimentation surface area required: 942 m2 Gauff Ingenieure 2-105 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Maximum capacity: 879.2 m3 For a flow of 18 Ml/day (18,000 m3/day) the surface area and volume required for the above to be met will be as outlined below based on the Mass Flux Theory using the following parameters; Design Settleability (SSVI): 125.0 ml/g Operating MLSS Xo: 3 g/m3 Maximum underflow rate Vo/e2; 0.57 N: 0.42 Vo: 4.23 Maximum Overflow rate Vo.e-nXo; 1.19 m/h Theoretical Settlement Area required: 1278.16 m2 Maximum Sludge Holding Capacity: 5.11 kg/m2.h Limiting Flux Load: 307(SSVI3.5)-0.77(Qu/A)0.68crit 4.31 kg/m2.h 4.27 Safety Factor 20% Theoretical Settlement Area required: 1533.79 m3 Therefore, based on the above brief assessment, the Final Sedimentation Tanks are hydraulically overloaded although this is not very significant. Unit 4 and Unit 5 These Units are also of Bardenpho but have less stages as compared to Unit 3. The basic principles under-pinning their design and operation is still the same as evidenced by their configurations. This similarity in layout includes also the number of FSTs. Therefore, the above assessment for Unit 3 was considered applicable and sufficient for these units at this stage. Therefore, the investment measures for Firle Sewage Treatment Works shall be as shown in the figures below; 2.3.3 Proposed Investment Measures for Firle WWTW Table 2-19: Proposed Investment Measures Immediate Medium Term (2020) Long Term (2030) Intake WorksUnit 1 to 4 Replacement and maintenance Replacement and maintenance of main of main Intake sluice gate Intake sluice gate Screens, mechanical Screens, mechanical screen,Air screen,Air lift pumps, detritors and lift pumps, detritors and elevators and flow meters. elevators and flow meters. Replacement and maintenance of Replacement and maintenance Compressors for Air Pumps, LV of Compressors for Air Pumps, Switchboard, and Small Power and LV Switchboard, and Small Lighting. Gauff Ingenieure 2-106 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Immediate Medium Term (2020) Long Term (2030) Power and Lighting. Intake Works Unit 5 Replacement and maintenance of Replacement and maintenance of main main Intake sluice gate Screens, Intake sluice gate Screens, mechanical mechanical screen,Air lift pumps, screen,Air lift pumps, detritors and detritors and elevators and flow elevators and flow meters. meters. Replacement and maintenance of Replacement and maintenance of Compressors for Air Pumps, LV Compressors for Air Pumps, LV Switchboard, and Small Power and Switchboard, and Small Power Lighting. and Lighting. Extension of Intake Works Extension of the Intake Works. PSTs and Trickling FiltersUnit 1 to 4 Maintenance and rehabilitation of Maintenance and rehabilitation of Division Box,Primary Division Box, Primary Sedimentation Sedimentation Tanks, andTrickling Tanks, and Trickling Filters. Filters. Raw Sludge PumpsUnit 1 to 4 Maintenance and rehabilitation of Maintenance and rehabilitation of Raw Raw Sludge Pumps, including Sludge Pumps, including pump controls, pump controls, suction gate valves, suction gate valves, delivery gate delivery gate valves, non-return valves, non-return valves, pressure valves, pressure gauges and air gauges and air valves. valves. Replacement and maintenance/of Raw Replacement and maintenance/of Water Pump Switchboard, Small Power Raw Water Pump Switchboard, and Lighting,overhead wire rope hoist, Small Power and Lighting,overhead Dewatering Pumps,Humus Pumps and wire rope hoist, Dewatering Fittings. Pumps,Humus Pumps and Fittings. Replacement and maintenance of Replacement and maintenance of Irrigation Pumps and Fittings. Irrigation Pumps and Fittings. BNR PlantUnit 3 to 4 Maintenance and rehabilitation of Maintenance and rehabilitation of Raw Raw Sludge Pumpsincluding pump Sludge Pumpsincluding pump controls, controls, suction gate valves, suction gate valves, delivery gate delivery gate valves, non-return valves, non-return valves, pressure valves, pressure gauges and air gauges and air valves. valves. Maintenance and rehabilitation of BNR Maintenance and rehabilitation of Unit, RAS Pumps including delivery BNR Unit, RAS Pumps including gate valves, non-return valves, delivery gate valves, non-return pressure gauges and air valves. valves, pressure gauges and air Maintenance and rehabilitation of WAS valves. Pumps, including, delivery gate valves, Maintenance and rehabilitation of non-return valves, pressure gauges WAS Pumps, including, delivery gate and air valves. valves, non-return valves, pressure Replacement and maintenanceof RAS gauges and air valves. and WAS Pump LV Switchboard, Replacement and maintenanceof Small Power and Lighting and RAS and WAS Pump LV overhead wire rope hoist. Switchboard, Small Power and Gauff Ingenieure 2-107 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Immediate Medium Term (2020) Long Term (2030) Lighting and overhead wire rope hoist. ClarifiersUnit 3 to 4 Maintenance/Rehabilitation of Maintenance/Rehabilitation of Clarifiers. Clarifiers. Unit 5 PSTs Maintenance and rehabilitation of Maintenance and rehabilitation of Division Box of Primary Sedimentation Division Box of Primary Tanks. Sedimentation Tanks. Unit 5 Raw Sludge Pumps Maintenance and rehabilitation of Maintenance and rehabilitation of Raw Sludge Pumps including pump Raw Sludge Pumps including pump controls suction gate valves, delivery controls suction gate valves, delivery gate valves, non-return valves, gate valves, non-return valves, pressure gauges and air valves. pressure gauges and air valves. Replacement and maintenance of Replacement and maintenance of Raw Sludge Pump LV Switchboard, Raw Sludge Pump LV Switchboard, Small Power and Lighting. Small Power and Lighting. Replacement and maintenance of Replacement and maintenance of overhead wire rope hoist and overhead wire rope hoist and Dewatering Pumps. Dewatering Pumps. Unit 5 BNR Plant Maintenance and rehabilitation of Maintenance and rehabilitation of BNR Unit,RAS Pumps, including, BNR Unit,RAS Pumps, including, delivery gate valves, non-return delivery gate valves, non-return valves, pressure gauges and air valves, pressure gauges and air valves. valves. Maintenance and rehabilitation of Maintenance and rehabilitation of WAS Pumps, including, delivery gate WAS Pumps, including, delivery gate valves, non-return valves, pressure valves, non-return valves, pressure gauges and air valves. gauges and air valves. Replacement and maintenance of Replacement and maintenance of RAS and WAS Pump LV RAS and WAS Pump LV Switchboard, Switchboard, Small Power and Small Power and Lighting. Lighting. Replacement and maintenanceof Replacement and maintenanceof overhead wire rope hoist. overhead wire rope hoist. Unit 5 Clarifiers Maintenance/Rehabilitation of Maintenance/Rehabilitation of Clarifiers. Clarifiers. Pump Station A Replacement and maintenance of Replacement and maintenance of High Lift Pumps, Q=2000m3/h, High Lift Pumps, Q=2000m3/h, H=65m, including pump controls, H=65m, including pump controls, suction gate valves, DN 400, delivery suction gate valves, DN 400, delivery gate valves with actuators, DN 400, gate valves with actuators, DN 400, non-return valves, DN 400, pressure non-return valves, DN 400, pressure gauges, air valves, gauges, air valves, Replacement/Maintenance of Replacement/Maintenance of overhead wire rope hoist, HL pump overhead wire rope hoist, HL pump 3.3 kV Starter feeder switchboard, 3.3 kV Starter feeder switchboard, including 3.3 kV starter console, and including 3.3 kV starter console, and Gauff Ingenieure 2-108 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Immediate Medium Term (2020) Long Term (2030) 3.3 kV remote starter panels, 3.3 kV remote starter panels, Maintenance and rehabilitation HL Maintenance and rehabilitation HL Effluent pump 380V LV switchboard. Effluent pump 380V LV switchboard. Replacement and rehabilitation of Replacement and rehabilitation of Small Power and Lighting, dewatering Small Power and Lighting, dewatering pumps, andventilation fans. pumps, andventilation fans. Pump Station B Replacement and Maintenance of Replacement and Maintenance of High Lift Pumps, Q=2000m3/h, High Lift Pumps, Q=2000m3/h, H=65m, including pump controls, H=65m, including pump controls, suction gate valves, DN 700, delivery suction gate valves, DN 700, delivery gate valves with actuators, DN 700, gate valves with actuators, DN 700, non-return valves, DN 700, pressure non-return valves, DN 700, pressure gauges and air valves. gauges and air valves. Replacement and Maintenance of Replacement and Maintenance of overhead wire rope hoist. overhead wire rope hoist. Maintenance and rehabilitation of HL Maintenance and rehabilitation of HL pump 3.3 kV Starter feeder pump 3.3 kV Starter feeder switchboard, including 3.3 kV starter switchboard, including 3.3 kV starter console, and 3.3 kV remote starter console, and 3.3 kV remote starter panels HL Effluent pump 380V LV panels HL Effluent pump 380V LV switchboard. switchboard. Replacement and maintenance of Replacement and maintenance of Small Power and Lighting, dewatering Small Power and Lighting, dewatering pumps, and ventilation fans. pumps, and ventilation fans. Effluent Pump Transmission Valves Replacement and maintenance of Replacement and maintenance of Gate Valve, DN 900,NRV, DN Gate Valve, DN 900,NRV, DN 900, 900, and Gate Valve, DN 700. and Gate Valve, DN 700. Digesters Unit 1 and 4 Rehabilitation and maintenance of Rehabilitation and maintenance of Primary andSecondary Digesters. Primary Secondary Digesters Digesters Unit 5 Rehabilitation and maintenance of Rehabilitation and maintenance of Primary Secondary Digesters. Primary Secondary Digesters Digester Sludge Control Pumps Maintenance and replacement of Maintenance and replacement of Mixing Pumps, Q= 72 m3/h, H= 13 Mixing Pumps, Q= 72 m3/h, H= 13 m, m, including, pump controls, suction including, pump controls, suction gate gate valves, DN 150, delivery gate valves, DN 150, delivery gate valves, valves, DN 150, non-return valves, DN 150, non-return valves, DN 150, DN 150, pressure gauges and air pressure gauges and air valves. valves. Maintenance and rehabilitation of Maintenance and rehabilitation of Injection Pumps, Q= 108, H= 39 m, Injection Pumps, Q= 108, H= 39 m, including, pump controls, suction gate including, pump controls, suction valves, DN 150, delivery gate valves, gate valves, DN 150, delivery gate DN 150, non-return valves, DN 150, valves, DN 150, non-return valves, pressure gauges and air valves. DN 150, pressure gauges and air Replacement and rehabilitation of valves. Mixing and Injection Pumps 380 V LV Replacement and rehabilitation of Switchboard,Small Power and lighting, Gauff Ingenieure 2-109 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Immediate Medium Term (2020) Long Term (2030) Mixing and Injection Pumps 380 V overhead wire rope hoist,dewatering LV Switchboard,Small Power and pumps. Lighting, overhead wire rope hoist,dewatering pumps. Heat Exchanger A Maintenance and rehabilitation of Maintenance and rehabilitation of Boilers, Heat Effluent Pumps, kW= Boilers, Heat Effluent Pumps, kW= 11, including, pumps controls, suction 11, including, pumps controls, suction gate valves, DN 150, delivery gate gate valves, DN 150, delivery gate valves, DN 150, non-return valves, valves, DN 150, non-return valves, DN 150, pressure gauges and air DN 150, pressure gauges and air valves, valves, Recirculation Pumps, kW= 2.2, Recirculation Pumps, kW= 2.2, including, pumps controls, suction including, pumps controls, suction gate valves, delivery gate valves, DN gate valves, delivery gate valves, DN 150, non-return valves, DN 150, 150, non-return valves, DN 150, pressure gauges and air valves. pressure gauges and air valves. Replacement and maintenanceof Replacement and maintenanceof Heat Effluent and Circulation Pumps Heat Effluent and Circulation Pumps 380 V LV Switchboard, Small Power 380 V LV Switchboard, Small Power and Lighting, overhead wire rope and lighting, overhead wire rope hoist, hoist, and dewatering pumps. and dewatering pumps. Heat Exchanger B Maintenance and Rehabilitation of Maintenance and Rehabilitation of Boilers,Heat Effluent Pumps, Q= 43.2 Boilers,Heat Effluent Pumps, Q= 43.2 m3/h, H= 14 m, kW= 11, including, m3/h, H= 14 m, kW= 11, including, pumps controls, suction gate valves, pumps controls, suction gate valves, DN 150, delivery gate valves, DN 150, DN 150, delivery gate valves, DN non-return valves, DN 150, pressure 150, non-return valves, DN 150, gauges and air valves, Recirculation pressure gauges and air valves, Pumps, Q= 54 m3/h, H= 15 m, kW= Recirculation Pumps, Q= 54 m3/h, 15, including, pumps controls, suction H= 15 m, kW= 15, including, pumps gate valves, delivery gate valves, DN controls, suction gate valves, delivery 150, non-return valves, DN 150, gate valves, DN 150, non-return pressure gauges and air valves, Gas valves, DN 150, pressure gauges and Booster Pumps, kW= 15, including, air valves, Gas Booster Pumps, kW= pumps controls, suction gate valves, 15, including, pumps controls, suction delivery gate valves, DN 150, non- gate valves, delivery gate valves, DN return valves, DN 150, pressure 150, non-return valves, DN 150, gauges and air valves, pressure gauges and air valves, Replacement and maintenanceof Replacement and maintenanceof Heat Effluent , Circulation and Gas Heat Effluent , Circulation and Gas Booster Pumps 380 V LV Booster Pumps 380 V LV Switchboard, Switchboard, Replacement and maintenance of Replacement and maintenance of Small Power and Lighting, overhead Small Power and Lighting, overhead wire rope hoist and dewatering wire rope hoist and dewatering pumps. pumps. Gasholders Rehabilitation/Maintenance of Gas Rehabilitation/Maintenance of Gas Holders, and Burners. Holders, and Burners. Gauff Ingenieure 2-110 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Immediate Medium Term (2020) Long Term (2030) Transformers Replacement and rehabilitation of Replacement and rehabilitation of Transformers: 5 MVA, 33/3.3 Transformers: 5 MVA, 33/3.3 kV,Transformers: 4 MVA, 33/11 kV, kV,Transformers: 4 MVA, 33/11 kV, Transformers: 0.5 MVA, 3.3/0.4 kV, Transformers: 0.5 MVA, 3.3/0.4 kV, Transformers: 0.75 MVA, 11/3.3 kV, Transformers: 0.75 MVA, 11/3.3 kV, Transformers: 0.2 MVA, 11/0.4 kV, Transformers: 0.2 MVA, 11/0.4 kV, and Auto Reclosers. and Auto Reclosers. Security Lights and Fence Rehabilitation and replacement of Rehabilitation and replacement of security lights, and security fence. security lights, and security fence. Standby Generator Rehabilitation and replacementof Rehabilitation and replacementof existing generator, 275 kVA. existing generator, 275 kVA. Buildings and Roads Rehabilitation and maintenance of Rehabilitation and maintenance of Office Buildings, WWTP Buildings Office Buildings, WWTP Buildings Staff Houses and Compound Roads. Staff Houses and Compound Roads. Gauff Ingenieure 2-111 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare 2.4 Crowborough WWTW 2.4.1 Description of Crowborough WWTW Crowborough sewage treatment works comprises a total of 3 individual wastewater treatment streams with a nominal overall design treatment capacity of 54,000 m3/day. The estimated average dry weather flow has been reported to periodically rise to, 100,000 m3/day. Unit 1 and Unit 2 Units 1 and 2 were commissioned in 1959 and 1972 respectively, and have a nominal design treatment capacity of 18,000 m3/day each. The two units comprise the following; • A common intake works comprising two parallel screen channels equipped with two sets of manually raked coarse and medium screens and corresponding Venturi Flumes; • Six parallel baffled type vertical flow grit chambers with corresponding air-lift type grit removal system including compressor and air-lift pipework; • Each unit has 6 No. circular sedimentation tanks, of the Dortmund tank design, without any sludge scraping device; • Each unit has 4 No. trickling filters 38m in diameter and 4m high, filled with granite rocks; • Each unit has 4 No. circular humus tanks (Final Sedimentations Tanks). Unit 3 Unit 3 is a modified activated sludge process biological reactor commonly known as a BNR with a 5 stage configuration for biological nutrient removal of nitrogen and phosphorous, and was commissioned in 1982 and has a nominal design treatment capacity of 18,000 m3/d. Unit 3 comprises; • A 5 stage biological reactor that includes denitrification and phosphorous removal and treatment of carbonaceous load, • Three number humus tanks. Pond System Crowborough Sewage Treatment Works in addition to the above units has 3 No. ponds in series serving unit 1 and 2 for additional effluent treatment in order to meet the corresponding standards for land and/or crop irrigation. However, under normal circumstances treated effluent from units 3 is directly discharged into Marimba River. Effluent Pump Stations Crowborough Sewage Treatment Works has one effluent pump station: • With a total of six pumps, all of which are not working, Treated effluent from Unit 1 & 2 is discharge on adjacent farms owned by the City of Harare for further purification. Gauff Ingenieure 2-112 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare 2.4.2 Capacity Assessment of Crowborough Sewage Treatment Works Unit 1 and Unit 2 Units 1 and 2 have a nominal design treatment capacity of 18,000 m3/d each. Flow measurement and distribution at the works to the various units is not functional however, from water demand and sewage flow calculations an additional 18,000 m3/d module is required hence, the existing process units have not been assessed to ascertain their hydraulic and process capacities. Comparing the number of process units and configurations with those at Firle Sewage Treatment Works, the assessment above for Firle Sewage Treatment Works is considered sufficient for Crowborough Sewage treatment Works for the design flow of 54.000 m3/d. Table 2-20: Waste Water Loading at Crowborough WWTW Works Current Flows (Ml/d) 2020 Flows (Ml/d) 2030 Flow (Ml/d) Crowborough Works 70.83 73.64 75.63 Therefore, the investment measures for Crowborough Sewage Treatment Works are highlighted in the following section. 2.4.3 Proposed Investment Measures for Crowborough WWTW The following tables show a summary of the investment measures required at Crowborough WWTW. Table 2-21: Proposed Investment Measures for Crowborough WWTW Immediate Medium Term (2020) Long Term (2030) Intake Works Unit 3 Replacement and maintenance of Replacement and maintenance of Main Main Intake Coarse Screens, Intake Intake Coarse Screens, Intake Sluice Sluice Gates, Grit Tanks, Gates, Grit Tanks, mechanical screen, mechanical screen, Air lift pumps, Air lift pumps, Detritors, Elevators, Flow Detritors, Elevators, Flowmeters meters and Compressors for Air and Compressors for Air Pumps. Pumps. Enlargement of Intake Works to 110 Enlargement of Intake Works to 110 ML/D. ML/D. Replacement and maintenance of Replacement and maintenance of LV LV Switchboard and Small Power Switchboard and Small Power and and Lighting. Lighting Intake Works 1 and 2 Replacement and maintenance Replacement and maintenance of Intake of Intake Sluice Gates, Main Sluice Gates, Main Intake Coarse Screens, Intake Coarse Screens, Main Main Intake Fine Screens, Air lift pumps, Intake Fine Screens, Air lift flow meters,LV Switchboard, and Small pumps, flowmeters,LV Power and Lighting. Switchboard, and Small Power and Lighting. Splitter Box Replacement and maintenance of Replacement and maintenance of Intake Sluice Gates and DN 900 Intake Sluice Gates and DN 900 inflow Concrete Pipes. inflow Concrete Pipes. Gauff Ingenieure 2-113 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Immediate Medium Term (2020) Long Term (2030) Unit 1 to Unit 2 PSTs, Trickling Filters and Humus Tanks Maintenance and rehabilitation of Maintenance and rehabilitation of Primary Sedimentation Tanks, Primary Sedimentation Tanks, Trickling Filters and Humus Tanks. Trickling Filters and Humus Tanks. Unit 1 Raw Sludge Pumps Maintenance and rehabilitation of Maintenance and rehabilitation of Raw Sludge Pumps, Q= 95 m3, H= Raw Sludge Pumps, Q= 95 m3, H= 20 m, including pump controls, 20 m, including pump controls, delivery gate valves, DN 250, non- delivery gate valves, DN 250, non- return valves, DN 250, pressure return valves, DN 250, pressure gauges and air valves, gauges and air valves, Replacement and maintenance of Replacement and maintenance of Raw Water Pump 380 V LV Raw Water Pump 380 V LV Switchboard, Small Power and Switchboard, Small Power and Lighting and overhead wire rope Lighting and overhead wire rope hoist, 3t. hoist, 3t. Effluent Pump Station to Crowborough Farm Replacement and maintenance of Replacement and maintenance of Effluent Pumps, Q=1500m3/h, Effluent Pumps, Q=1500m3/h, H=60m, including pump controls, H=60m, including pump controls, suction gate valves, DN 250, delivery suction gate valves, DN 250, delivery gate valves with actuators, DN 250, gate valves with actuators, DN 250, non-return valves, DN 250, pressure non-return valves, DN 250, pressure gauges, air valves, gauges, air valves, Replacement and maintenance of Replacement and maintenance of overhead wire rope hoist, HL Effluent overhead wire rope hoist, HL Effluent pump 380V LV switchboard, Small pump 380V LV switchboard, Small Power and Lighting, and dewatering Power and Lighting, and dewatering pumps. pumps. Raw Sludge Surface Pumps to Ingwe Farm Maintenance and rehabilitation of Maintenance/Rehabilitation of Raw Raw Sludge Pumps, Q= 1500 m3, H= Sludge Pumps, Q= 1500 m3, H= 60 60 m, including pump controls, m, including pump controls, suction suction gate valves, DN 500, delivery gate valves, DN 500, delivery gate gate valves, DN 450, non-return valves, DN 450, non-return valves, valves, DN 450, pressure gauges and DN 450, pressure gauges and air air valves,3.3 kV Switchboard,Raw valves,3.3 kV Switchboard,Raw Water Pump 380 V LV Switchboard, Water Pump 380 V LV Switchboard, Small Power and Lighting, overhead Small Power and Lighting, overhead wire rope hoist and dewatering wire rope hoist and dewatering pumps. pumps. Raw Sludge Surface Pumps to Mufakose Maintenance and rehabilitation of Maintenance and rehabilitation of Raw Sludge Pumps, Q= 1000 m3, H= Raw Sludge Pumps, Q= 1000 m3, H= 30 m, including pump controls, 30 m, including pump controls, suction gate valves, DN 250, delivery suction gate valves, DN 250, delivery gate valves, DN 250, non-return gate valves, DN 250, non-return valves, DN 250, pressure gauges and valves, DN 250, pressure gauges and air valves,Raw Water Pump 380 V LV air valves,Raw Water Pump 380 V LV Gauff Ingenieure 2-114 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Immediate Medium Term (2020) Long Term (2030) Switchboard, Small Power and Switchboard, Small Power and Lighting, overhead wire rope hoist Lighting, overhead wire rope hoist and dewatering pumps. and dewatering pumps. Effluent Pump Transmission Pipe and Valves Replacement and maintenance of, DN Replacement and maintenance of, 450 Gate Valves, DN 450 NRV and DN 450 Gate Valves, DN 450 NRV DN 600 Steel Pipe. and DN 600 Steel Pipe. Unit 3 PSTs and Humus Tanks Maintenance and rehabilitation of Maintenance and rehabilitation of Primary Sedimentation Tanks, and Primary Sedimentation Tanks, and Humus Tanks. Humus Tanks. Unit 3 Raw Sludge Surface Pumps Maintenance and rehabilitation of Maintenance and rehabilitation of Raw Sludge Pumps, Q= 150 m3, H= Raw Sludge Pumps, Q= 150 m3, H= 20 m, including pump controls, 20 m, including pump controls, suction gate valves, DN 250, delivery suction gate valves, DN 250, delivery gate valves, DN 250, non-return gate valves, DN 250, non-return valves, DN 250, pressure gauges and valves, DN 250, pressure gauges and air valves. air valves. Replacement and maintenance of Replacement and maintenance of Raw Water Pump 380 V LV Raw Water Pump 380 V LV Switchboard,Small Power and Switchboard,Small Power and Lighting, overhead wire rope hoist Lighting, overhead wire rope hoist and dewatering pumps. and dewatering pumps. Unit 3 BNR Plant Maintenance and rehabilitation of Maintenance and rehabilitation of BNR Unit, RAS Pumps, kW= 11, BNR Unit, RAS Pumps, kW= 11, including, delivery gate valves, DN including, delivery gate valves, DN 250, non-return valves, DN 250, 250, non-return valves, DN 250, pressure gauges and air valves, WAS pressure gauges and air valves, WAS Pumps, kW= 5.5, including, delivery Pumps, kW= 5.5, including, delivery gate valves, DN 200, non-return gate valves, DN 200, non-return valves, DN 200, pressure gauges and valves, DN 200, pressure gauges and air valves. air valves. Replacement and maintenance RAS Replacement and maintenance RAS and WAS Pump 380 V LV and WAS Pump 380 V LV Switchboard,BNR LV Switchboard, Switchboard,BNR LV Switchboard, Small Power and Lighting and Small Power and Lighting and overhead wire rope hoist. overhead wire rope hoist. Digesters Rehabilitation and maintenance of Rehabilitation and maintenance of Primary andSecondary Digesters Primary andSecondary Digesters Digester Sludge Control Pumps Maintenance and replacement of Maintenance and replacement of Mixing Pumps, Q= 72 m3/h, H= 13 m, Mixing Pumps, Q= 72 m3/h, H= 13 m, including, pump controls, suction gate including, pump controls, suction gate valves, DN 150, delivery gate valves, valves, DN 150, delivery gate valves, DN 150, non-return valves, DN 150, DN 150, non-return valves, DN 150, Gauff Ingenieure 2-115 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Immediate Medium Term (2020) Long Term (2030) pressure gauges and air pressure gauges and air valves,Pumps, Q= 108, H= 39 m, valves,Pumps, Q= 108, H= 39 m, including, pump controls, suction gate including, pump controls, suction gate valves, DN 150, delivery gate valves, valves, DN 150, delivery gate valves, DN 150, non-return valves, DN 150, DN 150, non-return valves, DN 150, pressure gauges and air valves. pressure gauges and air valves. Replacement and maintenance of Replacement and maintenance of Mixing and Injection Pumps 380 V LV Mixing and Injection Pumps 380 V LV Switchboard,Small Power and Switchboard,Small Power and Lighting, overhead wire rope hoist, Lighting, overhead wire rope hoist, anddewatering pumps. anddewatering pumps. Heat Exchanger Maintenance and rehabilitation of Maintenance and rehabilitation of Boilers,Heat Effluent Pumps, kW= 11, Boilers,Heat Effluent Pumps, kW= 11, including, pumps controls, suction including, pumps controls, suction gate valves, DN 150, delivery gate gate valves, DN 150, delivery gate valves, DN 150, non-return valves, valves, DN 150, non-return valves, DN 150, pressure gauges and air DN 150, pressure gauges and air valves, Pumps, kW= 2.2, including, valves, Pumps, kW= 2.2, including, pumps controls, suction gate valves, pumps controls, suction gate valves, delivery gate valves, DN 150, non- delivery gate valves, DN 150, non- return valves, DN 150, pressure return valves, DN 150, pressure gauges and air valves. gauges and air valves. Replacement and maintenance of Replacement and maintenance of Heat Effluent and Circulation Pumps Heat Effluent and Circulation Pumps 380 V LV Switchboard, Small Power 380 V LV Switchboard, Small Power and Lighting,overhead wire rope and Lighting,overhead wire rope hoist, dewatering pumps. hoist, dewatering pumps. Gas Holders Rehabilitation and maintenance of Rehabilitation and maintenance of Gas Holders, and Burner. Gas Holders, and Burner. Transformers Replacement and maintenance of Replacement and maintenance of Transformers: 2 MVA, 33/3.3 kV, Transformers: 2 MVA, 33/3.3 kV, Transformers: 500 kVA, 11/0.4 kV, Transformers: 500 kVA, 11/0.4 kV, 33kV Switchboard (4nr VCBs), 33kV 33kV Switchboard (4nr VCBs), 33kV Switchboard (4nr VCBs), Switchboard (4nr VCBs), Transformers: 0.2 MVA, 11/0.4 kV, Transformers: 0.2 MVA, 11/0.4 kV, and Switchgear Components. and Switchgear Components. Security Lights and Fence Rehabilitation and replacement Rehabilitation and replacement security lights and security fence. security lights and security fence. Security Lights and Fence Rehabilitation and replacement of Rehabilitation and replacement of existing 275 kVA Generator. existing 275 kVA Generator. Standby Generators Rehabilitation and replacement of Rehabilitation and replacement of Gauff Ingenieure 2-116 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Immediate Medium Term (2020) Long Term (2030) existing 275 kVA Generator. existing 275 kVA Generator. Building and Roads Rehabilitation and maintenance of Rehabilitation and maintenance of Office Buildings, WWTP Buildings, Office Buildings, WWTP Buildings, Staff Houses andRoads. Staff Houses andRoads. Table 2-22: Proposed Investment Measures for New BNR Module Immediate Medium Term (2020) Long Term (2030) Intake Works Unit 3 Construction of a new inlet works Maintenance and rehabilitation of BNR complete with a grit removal Unit,RAS Pumps, including, delivery system, gate valves, non-return valves, Construction of new Primary pressure gauges and air valves, WAS Sedimentation Tanks. Pumps, including, delivery gate valves, Construction of a new non-return valves, pressure gauges and 18,000m3/d BNR Unit, air valves. Construction of Final Settlement Replacement and maintenance of RAS Tanks and WAS Pump LV Switchboard, BNR LV Switchboard, Small Power and Lighting and overhead hoist. Maintenance and Rehabilitation of Primary Sedimentation Tanks and Humus Tanks. 2.5 HatcliffWWTW 2.5.1 Description of Hatcliff WWTW Hatcliff sewage treatment works comprises one wastewater treatment stream with a nominal overall design treatment capacity of 5,000m3/day. The estimated average dry weather flow has been reported to periodically rise to, 2,500 m3/day. The treatment train comprises the following; • Preliminary Treatment, and • Biological treatment using a BNR. The works are very small since they serve a limited catchment area and as such their impact in treating sewage based on the demand and wastewater flow calculations is not very significant. Table 2-23: Waste Water Loading at Hatcliff WWTW Works Current Flows (Ml/d) 2020 Flows (Ml/d) 2030 Flow (Ml/d) Hatcliff Sewerage Works 3.07 4.39 6.40 Subsequently, these have not been assessed in detail but, the following investment measures are required in order to meet the medium term and long term wastewater treatment from the small catchment area; Gauff Ingenieure 2-117 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare 2.5.2 Proposed Investment Measures The following figure shows some of the investment measures that are required in the short and long term. Table 2-24: Proposed Investment Measures for Hatcliff WWTW Immediate Medium Term (2020) Long Term (2030) Maintenance and rehabilitation of Maintenance and rehabilitation of BNR Unit, RAS Pumps, including, BNR Unit, RAS Pumps, including, delivery gate valves, non-return delivery gate valves, non-return valves, pressure gauges and air valves, pressure gauges and air valves,WAS Pumps, including, valves,WAS Pumps, including, delivery gate valves, non-return delivery gate valves, non-return valves, pressure gauges and air valves, pressure gauges and air valves. valves. Replacement and maintenance RAS Replacement and maintenance RAS and WAS Pump LV Switchboard, and WAS Pump LV Switchboard, BNR LV Switchboard, BNR LV Switchboard, Replacement and maintenance of Replacement and maintenance of Small Power, Lighting and overhead Small Power, Lighting and overhead hoist. hoist. 2.6 Marlborough WWTW 2.6.1 Description of Marlborough WWTW Marlborough sewage treatment works comprises one wastewater treatment stream with a nominal overall design treatment capacity of 2,000m3/day. The estimated average dry weather flow is not known. The treatment train comprises the following; • 3 primary stabilisation ponds; and • 2 secondary stabilisation ponds. The works are very small since they serve a limited catchment area and as such their impact in treating sewage based on the demand and wastewater flow calculations is not very significant. Table 2-25: Waste Water Loading at Marlborough WWTW Works Current Flows (Ml/d) 2020 Flows (Ml/d) 2030 Flow (Ml/d) Marlborough Sewerage Works 4.70 4.32 4.72 Subsequently, these have not been assessed in depth but the following investment measures are required in order to meet the medium term and long term wastewater treatment from the small catchment area; Gauff Ingenieure 2-118 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Immediate meidum term (2020) Long term (2030) •Rehabilitation of ponds, •Rehabilitation of ponds. •Construction of 2,000 m3/d stabilisation ponds. Gauff Ingenieure 2-119 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare 3 PROPOSED HARARE SOUTH SEWERAGE MEASURES 3.1 Background Harare is served by a number of sewage treatment plants of varying sizes. This discussion relates to the sewage collection and treatment for the eastern, south eastern and southern suburbs of Harare as shown in the map and tables below. These areas all fall within the Manyame river catchment. Currently these areas have varied sewage provision and include large unsewered areas into which the city is expanding. Collected sewage is, with the exception of Chitungwiza, treated in many, dispersed small stabilization ponds which are generally functioning poorly. The current situation in this catchment is that the majority of sewage is therefore discharged into the Manyame and its tributaries untreated. The prince Edward Water Treatment works extracts water from the centre of this increasingly polluted catchment. 3.2 Existing Plans The following scope of works is covered under the UWSSRP regarding the water supply components for Harare Municipality. Current plans date back to the 2003 Harare Sewage Master Plan prepared by Safege. This master plan recognized that the major expansions of Harare would be in the southern suburbs, termed in that report the Southern Industrial Area or SIA. That Master Plan expected population growth within the SIA to increase sewage production from zero in 2003 to 85MLD in 2015. The management of this sewage and sewage from eastern suburbs was proposed as follows: • Ventersberg, Tafara, Donny Brook, Ruwa and Epworth would all be drained to a new sewage treatment works at Lyndhurst Farm. The plan called for the construction of collector and trunk sewers leading a Biological Nutrient Removal (BNR) plant on Lyndhurst Farm. Considerable progress was made on the sewer construction but none on the treatment works before the project was suspended due to lack of funds. • The Southern Harare Suburbs, collectively termed the SIA were divided into six sub catchments. The 2003 plan calls for part of the effluent from the SIA area to be pumped to Lyndhurst Farm WWTW whilst 3 new BNR works and two additional sewage pumping stations would serve the balance of the SIA. • Not included in the 2003 Harare Master Plan is Chitungwiza. Current plans are for the construction of a new Sewage Treatment Plant at the confluence of the Nyatsime and Manyame rivers and the North West corner of Chitungwiza. 3.3 Proposed Combined Plan This project is recommending a proposal to combine all of these areas into a single sewage catchment with all of the effluent to be collected into a major new Harare South Trunk Sewer (HSTS) and treated at a new Harare South Wastewater Treatment Works (HSWWTW). The proposal would include the following sub projects: Gauff Ingenieure 3-120 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare • Completion of the Donny Brook to Lyndhurst Farm trunk sewer and connection of Ventersberg, Donny Brook and Mabvuku /Tafara to this line. This was partly constructed in 2003 but not completed. This sub project is required regardless of whether a combined sewage plan is implemented and will allow for the decommissioning of three sets of waste stabilization ponds in Donny Brook. • Connection of the Epworth area to the Donny Brook to Lyndhurst Farm trunk sewer which passes through Epworth. This sub project is required regardless of whether a combined sewage plan is implemented and will allow the Epworth sewer system constructed 20 years ago finally to be commissioned. • Construction of two trunk sewers to link the collection system in Ruwa to the Donny Brook to Lyndhurst sewer. This construction will allow the decommissioning of three sewage pumping stations in Ruwa which currently regularly discharge raw sewage into the Ruwa River. This sub project is required regardless of whether a combined sewage plan is implemented. • An extension from the end of the existing Donny Brook to Lyndhurst Farm Sewer approximately 28 km to a proposed new Sewage Treatment Plant close to the confluence between the Manyame and Mukuvisi Rivers. • An extension in the trunk sewer proposed to link Chitungwiza to its new WWTW by approximately 1 km such that it ties into the trunk sewer from Lyndhurst Farm to the new WWTW. • Construction of a single WWTW at the end of the new Trunk Sewer. The construction of this works would obviate the need for construction of the five new WWTWs currently proposed at Lyndhurst Farm, SIA Zones 2, 3 and 4 and Chitungwiza. Ideally these works would be put in place immediately but the HSTS and its associated treatment works represent a very major capital investment at a time when the city has many competing demands for resources. Therefore it is planned that interim measures will be put in place in the short to medium term to keep the existing system functioning and return it to its designed functionality whilst the HSTS scheme will be implemented as a long term investment measure. Interim measures proposed are as follows: 1. Short term minor works to rehabilitate the existing Donny Brook 1 to 4 waste stabilisation ponds 2. Construction of temporary pond system in Ruwa to treat Ruwa Wastewater in the Medium Term 3. Delay any measures to provide waterborne sanitation in Epworth until the long term when the HSTS will be in place. 4. Develop a 125Ha irrigation area for the disposal of wastewater from the Donny Brook Ponds 5. Only the lowest portion of the Harare South Trunk Sewer will be developed in the Medium Term, from Chitungwiza to the outfall. Gauff Ingenieure 3-121 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare 6. Initially the new Single Treatment works will be sized for just flows from Chitungwiza and areas downstream and so wil require a small pump station and DN500 force main to the location of the new ponds and irrigation system. 3.4 New Harare South Trunk Sewer As seen from the list above the proposed trunk sewer between Lyndhurst Farm and the new works is a very major component of the proposal. The route for this sewer is shown in the Figure 3-1 overleaf. Along its route the trunk sewer collects flows from the various SIA Zones and from Chitungwiza. In the initial phase of the project, only the lower portion of the sewer will be constructed from the location where Chitungwiza's sewage flows in to the discharge point. This section will be constructed with pipes sized to the expected flows from these areas only. In the long term the line will be extended all the way to Donny Brook through the construction of line north towards Lyndhurst farm, the commissioning of the Lyndhurst Farm to Donny Brook sewer and finally connection of Ruwa and Epworth to the HSTS. At this stage a new large diameter line will be laid parallel to the line constructed as a short term measure in the lower reaches. Gauff Ingenieure 3-122 275000 280000 285000 290000 295000 300000 305000 310000 . ! . ! Mutiny Avenues Letombo Kuwadzana . ! Mabvuku Donny Brook Ponds 4 Warren ) " . ! Viking Kopje Tafara Donny Brook Ponds 1 ! . Warren Park " ) ! . Belvedere ! . Greendale Kuwadzana Donny Brook Ponds 1 Eastlea Lorelei " ) Mabvuku Workington Mabelreign # * Donny Brook Ponds 2 8025000 8025000 ) " Kambuzuma Workington Workington Lonchinvar Mbare Mbare Ventersburg Hatfield Mufakose . ! Mbare ! . ! . Crowborough WWTW ) " Aspindale WorkingtonSunningdale Greendale Marimba Park Mufakose ! . Mbare Hatfield Mufakose Budiriro Highfield Waterfalls Waterfalls Highfield 8020000 8020000 ! . Willowvale Estate Highfield # * Glen View Glen Norah Airport Glen View Glen Norah Glen NorahGlen Norah # * Glen View Waterfalls Firle WWTW ) " New Southern WWTW " ) Hatfield 8015000 8015000 Waterfalls Zone4 Inflow ' HSWWTW ' Zone1_3 ' Zone1_1 Zone3 Prince Edward WTP ' Zone ' 1_2 ' " / Zone2 ' Legend 8010000 8010000 Proposed HSTS New Chitungwiza WWTW " ) Main Sewer ! . Reservoirs # * SPS Zengeza WWTW " ) # 0 PStations 8005000 8005000 " / WTW Roads Watercourse 275000 280000 285000 290000 295000 300000 305000 310000 Figure 3-1 Greater Harare Water and Sanitation Investment Plan Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Using flow figures from the current master planning exercise the following overview of the likely flows and sizing options for the trunk sewer are obtained: Table 3-1: Proposed Trunk Sewer Flows and Sizing 1. Chitungwiza inflows at this Location 2. Phased installation is the pipe diameter capable of carrying 50% of the ultimate flow. This assumes that the smaller diameter pipe will be constructed initially and an equal diameter pipe laid parallel at a later date. 3. This is the date by which the second phase pipe will be required assuming the growth rates used in the current master plan are met. The table above shows that this is a considerable investment with significant lengths of large diameter sewers. It also points to a number of possible implementation strategies as follows: • Provided the current master plan population and sewerage coverage growth rates are considered reasonable the system should be installed now for 2030 flows. • However there is considered to be a significant risk that sewage flows will develop slower than expected so an interim solution may be to install a trunk sewer to 50% of the 2030 capacity. It should be noted that this will not represent a 50% cost saving but the saving would be significant and even with growth as predicted this solution will see the line past the 2020 horizon before overloading. • Ssome other design flow may be selected higher than the 50% but below the predicted high 2030 flow. The peak flows used here are 2.5 x average DWF. As most of the areas to be sewered are new networks constructed from uPVC these may have considerably lower infiltration rates that existing and the 2.5 factor may be Gauff Ingenieure 3-124 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare uneconomically high. This however leaves a risk of an under-capacity line running parallel to an important watercourse • Investment timing concerns may take precedence over technical requirements requiring different phasing of the works. In the final proposal this is the case and only the lower reaches of the line (Reaches 4 to 7) will be constructed in the short term and the balance as a long term investment. The selected approach is to install the line from Reach 4 to 7 to the 2020 capacity of those zones only with Ventersburg, Donny Brook, Epworth, Ruwa and other upper areas only connecting to the line in the long term. In the long term the upper reaches will be completed and the lower reaches provided with a new parallel line for increased capacity. Table 3-2: Selected Approach for Sewer Sizing Reach From To Length Installed Diameter (mm) (km) 2020 2030 Ext Donnybrook Lyndhurst Extist 1200 Farm 1 Lyndhurst Zone 4 1200 Farm 2.44 2 Zone 4 Zone 3 9.45 1200 3 Zone 3 Zone 21 7.36 1500 4 Zone 2 Zone 1_1 2.57 750 1650 5 Zone 1_1 Zone 1_2 1.89 825 1800 6 Zone 1_2 Zone 1_3 2.25 825 1800 7 Zone 1_3 New 825 1800 WWTW 2.25 Table 3-3: Advantages and Disadvantages of the Single WWTW Option Advantages Disadvantages • Economies of scale offer lower overall • Larger initial outlay required to bring capital cost. the system into operation as the whole trunk main must be completed. This is • The trunk sewer will removal all a potentially serious handicap for the sewage pumping stations and thereby project as it is essential to find the ensure that no effluent is discharged money for the trunk sewer before any untreated into the Manyame River. The sewerage expansion within the project will go a significant distance catchment. towards ensuring the long term protection of the portion of the Manyame catchment within the urban • However this advantage of dispersed Gauff Ingenieure 3-125 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare boundary. facilities is partially offset because development has commenced in all SIA • No sewage, treated or untreated will be Zones already and so all four urgently discharged into the Manyame River require WWTW or an outfall sewer, so above the Prince Edward Water initial capital cost outlays will be large Treatment Works. This will ease for either option. operations at the WTW and in the long run may result in operational cost savings from improved raw water. • A single, large, centralized treatment works will allow for more specialized operational staff including more process specialists, chemists etc. than would be available at multiple dispersed works. • The reduction in dispersed mechanical plants and pumping stations will result in a lower maintenance burden than the alternatives. • This option has a significantly lower staffing requirement than the alternatives. One WWTW must be staffed as opposed to five WWTW and seven SPS required under the 2003 Master Plan. • >1,000m buffer available from the nearest proposed housing. • By piping the effluent to the proposed HSWWTW location shown in the map an opportunity is created to do away with the energy intensive BNR process which is explored in another discussion paper. 3.5 Treating the Expanded Sewage Production 3.5.1 Overview of Proposal The future population growth in Harare is predicted to take place predominantly in the Southern suburbs of the city. This area referred to as the Southern Industrial Areas (SIA) in the 2003 Harare Sewage Master Plan prepared by Safege and as Ward 1 Harare South Rural in the current study is expected to expand from almost no population to over 700,000 Gauff Ingenieure 3-126 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare residents in 2030. The average dry weather flow (ADWF) from this area is predicted to grow to of 371MLD by 2020, rising to 87MLD by 2030. The increase in Harare’s water supply to provide for this increased sewage production is expected to come from reductions in non revenue water and the commissioning of a new water source at Kunzwi, capable of supplying 250MLD to the city of Harare. The Kunzwi development is critical to this sewage treatment plan as for the first time the city will have a water supply from outside of the Manyame catchment. Therefore it will be possible to dispose of certain quantities of wastewater outside of the Manyame catchment without negatively affecting the catchment’s water balance. The current proposal is therefore: • To collect sewage at the termination of the HSTS and to locate preliminary treatment and primary treatment at that location, close to the confluence of the Manyame and the Mukuvisi rivers. • The settled effluent will then be pumped through a distance of 5-6km in a southerly direction to the watershed between the Manyame and the Mupfure catchments. • At this location there is extensive farmland that could be acquired for a stabilisation pond based sewage treatment plant. • As nutrient removal is a key requirement of the Environmental Management Agency and pond systems cannot achieve the rates of nutrient removal required, the pond system effluent must be disposed of through irrigation. Figure 3-2: Schematic Layout of Proposed Treatment In this case treatment by waste stabilisation pond stream with effluent disposal by irrigation has been selected because it has the lowest energy usage and the simplest and most robust operation and maintenance regime of all treatment processes whilst meeting EMA requirements for nutrient removal. A preliminary process design has been prepared based on the design methods recommended in ‘Domestic Wastewater Treatment in Developing Countries’, Duncan Mara 1Figures are for average DWF, net of the factor of 1.25 for average wet weather flow used in the sewage production figures submitted separately under the GHWSSP project. Gauff Ingenieure 3-127 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare 2003. Design is based on the coldest month of the year (July) and therefore dry weather flows are used. 3.5.2 Alternative Systems with Similar Outcomes The following alternatives would offer similar treatment quality to the pond system described above and should only be ruled out at detailed feasibility stage. Trickling Filter Secondary Treatment The system would comprise: • Preliminary Treatment and Anaerobic Ponds at the termination of the HSTS. • Sewage pump station and 6km force main to the HSWWTW • Trickling filters in place of the facultative ponds • Irrigation area of similar extent as required for facultative ponds. Table 3-4: Advantages and Disadvantages of Trickling Filter Alternative Advantages Disadvantages • Smaller land footprint (+-140Ha per 29ML • Mechanical plants of this nature require stream) more intensive maintenance. • Filter construction programming is more • Holding pond would be needed for plant scalable to actual rates of growth in sewage effluent. production. • Maintenance failure leading to total loss of secondary treatment in filters would still leave considerable pond area to guarantee secondary treatment EMA Standards Compliance The proposal and alternatives here all meet EMA standards for sewage quality and nutrient removal. 3.6 Lifecycle Cost Considerations A detailed comparison was made of the lifecycle costs of the following options for the collection and treatment of sewage from Harare South: • Option 1 - BNR treatment through distributed BNR plants in the Manyame Catchment. This is the base option based on the 2003 Harare Sewage Master Plan. • Option 2 - Harare South Trunk Sewer (HSTS) plus centralised BNR treatment at one Harare South Wastewater Treatment Works (HSWWTW) at the discharge point of the HSTS. • Option 3 – HSTS with Harare South Sewage Pump Station (HSSPS) at the discharge point of the HSTS feeding an HSWWTW based on pond treatment with effluent irrigation in the Mupfure catchment where more land is available. Gauff Ingenieure 3-128 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare As the purpose of this exercise is simply to compare options, any costs which are common to all options are excluded from the analysis. These include; • General overheads of the water utility • Sewer network expansions in various areas that will contribute to the systems • Trunk sewer portions serving Mabvuku/ Tafara, Donnybrook, Epworth and Ruwa and linking to Lyndhurst Farm. 3.6.1 Method of Cash flow Preparation Costs For each of the above options a cash flow has been prepared on the following basis: • Initial Construction costs are financed through 20 year loans at an assumed 5% interest rate. • Routine maintenance costs are assumed to be cash financed and are allowed for as follows: o Civil works and pipework - 1% of capital cost per annum o Mechanical and electrical works - 10% of capital cost per annum • Operational Costs o Staff Costs. A staffing breakdown has been prepared for each type of process and facility. o Electricity costs. Electricity consumption is estimated for each facility and has been priced at current weighted average rates of around US$0.09 per kw.hr 2. • Opportunity Costs. Where plant effluent is disposed of outside the Manyame catchment there is an opportunity cost involved because the effluent is no longer available for recycling through the Morton Jaffray WTW. This cost is considered to apply 50% of the time as it is only applicable at times when the output of Morton Jaffray is limited by available water resource in the Manyame catchment. Revenue Billing revenues are assumed to be constant for all options and are therefore excluded from the analysis. There is potential for significant revenue from the sewage irrigation option but whilst the costs associated with the irrigation are certain, obtaining revenue requires other activities (e.g sale of water, farming, forestry management etc.) which are not certain. The assumption made therefore is that the irrigation system will be owned and managed by the Harare Water utility and will generate sufficient revenue only to cover its operational 2The rate used was calculated from the detailed energy calculations made by Peter Morris for the Chitungwiza BNR as total energy consumed in kw.hr/ total energy cost in US$. Gauff Ingenieure 3-129 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare expenses of general labour, land management equipment, replanting etc. Revenues are not expected to cover costs of energy or irrigation equipment maintenance and replacement. This is considered a safe assumption as from experience (estimates made for Lusaka International Airport) a fee can be charged to a private operator to cut and bale grass which will cover these expenses. Commercial timber revenues would be much larger. Construction Capital Costs Distributed BNR Plants For Option 1, utilising distributed BNR plants, these are assumed to be installed as treatment streams of 10ML each. Harare South Trunk Sewer The estimates of the Harare South Trunk Sewer assume phased installation as discussed above. It should be noted that the portion of the Harare South Trunk sewer above the previously proposed Lyndhurst Farm WWTW (Harare Sewage Master Plan 2003) is common to all of the options and is therefore excluded from this simplified comparison. Centralised BNR Plant For Option 2, the centralised BNR plant is estimated to be installed in three streams of 30MLD nominal capacity each3. The timing for installation of the streams is as indicated in the previous discussion paper. Harare South Sewage Pump Station For Options 3 and 4 The HSSPS has been costed assuming that it is installed in two phases each of 50% of the required 2030 capacity. Cost estimates for each Phase are included in Attachment 3. Pond and Irrigation Systems For Options 3 and 4, the pond or pond/ irrigation plant is estimated to be installed in three streams of 30MLD nominal capacity each. The timing for installation of the streams is as indicated in the previous discussion paper and is the same as proposed for the centralised BNR. Investment Costs and Timings The table overleaf shows the proposed magnitude and timing of the main investment costs in each option under consideration. 3Figures are for average DWF, net of the factor of 1.25 for average wet weather flow used in the sewage production figures submitted separately under the GHWSSP project. Gauff Ingenieure 3-130 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare Table 3-5: Major Investments 2016 - 2020 by Options (US$ Millions) 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Year Option 1 - Capital Costs BNR Plants Zone1 15.6 15.6 Zone2 15.6 15.6 15.6 Lyndhurst 31.2 15.6 15.6 15.6 15.6 Chitungwiza 15.6 15.6 SPS and Force Mains Zone1-1 0.6 0.6 Zone1_2 0.6 0.6 Zone 3-4 2.6 2.6 Zone4 1.4 1.4 Option 2 - Capital Costs Trunk Sewers Zone Ext 5 HSTS1 3 HSTS2 12 HSTS3 9 HSTS4 4 4 HSTS5 4 4 HSTS6 5 5 HSTS7 5 5 BNR Plants HSWWTW 46.8 46.8 46.8 Option 3 - Capital Costs Trunk Sewers Zone Ext 5 HSTS1 3 HSTS2 12 HSTS3 9 HSTS4 4 4 HSTS5 4 4 HSTS6 5 5 HSTS7 5 5 Gauff Ingenieure 3-131 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Year Sewage Pump Stations 9 9 Land purchase 4 Pond and Irrigation 22 22 22 Table 3-6: Amortised Cash Flow2016-2020 by Options (US$ Millions) 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Year Option 1 Total Amortised Capital Cost 301 5.1 6.4 7.7 8.9 10.0 9.5 9.1 10.7 11.7 12.7 12.1 11.5 10.9 13.5 14.4 Maintenance Cost 101 1.0 1.3 1.6 1.9 2.2 2.2 2.2 2.7 3.0 3.3 3.3 3.3 3.3 3.9 4.1 Staffing Costs 124 1.2 1.6 2.1 2.5 2.9 2.9 2.9 3.2 3.6 4.0 4.0 4.0 4.0 4.7 5.0 Energy Costs 130 1.4 1.6 1.9 2.2 2.4 2.7 3.0 3.3 3.6 3.9 4.2 4.5 4.8 5.1 5.4 Total 10. 656 8.7 13.3 15.6 17.5 17.3 17.1 19.9 21.9 23.8 23.5 23.2 22.9 27.1 28.9 Present Worth Costs 195 8.7 9.9 11.0 11.7 12.0 10.8 9.7 10.2 10.2 10.1 9.1 8.1 7.3 7.8 7.6 Option 2 Amortised Capital Cost 304 9.3 8.8 13.1 12.4 12.6 12.9 12.3 11.6 11.1 15.2 14.4 13.7 13.0 12.4 11.8 Maintenance Cost 87 1.3 1.3 2.2 2.2 2.3 2.4 2.4 2.4 2.4 3.2 3.2 3.2 3.2 3.2 3.2 Staffing Costs 81 1.1 1.1 2.1 2.1 2.1 2.1 2.1 2.1 2.1 3.1 3.1 3.1 3.1 3.1 3.1 Energy Costs 125 1.3 1.5 1.6 1.8 1.9 2.2 2.4 2.7 2.9 3.2 3.4 3.7 3.9 4.2 4.4 Total 13. 12. 598 19.0 18.5 18.9 19.5 19.1 18.7 18.4 24.7 24.2 23.7 23.2 22.8 22.5 Present Worth Costs 13. 11. 197 15.7 13.9 12.9 12.1 10.8 9.6 8.6 10.5 9.3 8.3 7.4 6.6 5.9 Option 3 Amortised Capital Cost 231 8.2 7.8 9.6 9.1 10.4 10.8 10.3 9.7 9.3 11.0 10.5 10.0 9.5 9.0 8.5 Maintenance Cost 63 1.1 1.1 1.5 1.5 1.8 1.9 1.9 1.9 1.9 2.3 2.3 2.3 2.3 2.3 2.3 Gauff Ingenieure 3-132 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Year Staffing Costs 24 0.5 0.5 0.7 0.7 0.7 0.7 0.7 0.7 0.7 0.9 0.9 0.9 0.9 0.9 0.9 Energy Costs 72 0.8 0.8 0.9 1.0 1.1 1.2 1.4 1.5 1.7 1.8 2.0 2.1 2.2 2.4 2.5 Total 10. 10. 390 12.7 12.3 14.0 14.6 14.2 13.8 13.5 16.0 15.6 15.2 14.9 14.6 14.2 Present Worth Costs 10. 136 9.3 10.5 9.3 9.5 9.1 8.0 7.1 6.3 6.8 6.0 5.3 4.7 4.2 3.8 Gauff Ingenieure 3-133 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare The cash flow on the previous page is summarised below. For the calculation of Present Worth Costs a discount rate of 10% has been used in line with previous submissions under the project. Table 3-7: Cash Flow Summary 2016 to 2030 OPTION Figures US$ Million 1 2 3 Amortised Capital Cost 154 185 144 Maintenance Cost 39 38 29 Staffing Costs 48 35 11 Energy Costs 50 41 23 Total 292 299 206 Present Worth Costs 144 156 110 Overall Cost • Option 3 (Ponds with irrigation) is clearly favoured from the analysis with lowest capital cost, operational costs, overall cost and discounted cost. • Of the two options using BNR treatment, Option 1 (distributed BNR plants) is marginally favoured by the analysis. However the difference is probably within the accuracy of the model and declines with increasing modelling period with the totals becoming equal at around 17 years and the discounted totals at 25-30 years, approximately the lifetime of the facilities. Operation and Maintenance Cost • Option 3 has the lowest O&M cost of the options meeting EMA requirements. • Of the two options using BNR treatment, Option 2 (Single BNR) is approximately 20% cheaper to run than Option 1. Sensitivity Analysis The cash flows contain numerous assumptions which are subject to varying levels of certainty. To check the sensitivity of the result to changes in these assumptions a ‘Monte Carlo’ simulation was carried out. The following assumptions were varied randomly over 2000 calculations: Table 3-8: Base Prices and Selection of Bounds Variable Description of Base Price and Selection of Bounds Base price used is 2003 construction costs escalated at 3% Construction Cost BNR Plants per annum. Lower bound is 2% per annum escalation, upper is 3.5% per annum. Construction Cost Pond Pond Capex based on estimates appended as no similar Systems recent examples exist. Bounds favour cost overrun US$0.09 per kw.hr is the current price. Falls in price in real Energy Price terms are unlikely and recent trends have been above Gauff Ingenieure 3-134 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare inflationary increases. Lower bound is $0.08/ kW.hr upper is $0.12/ kW.hr Base values are calculated for the layouts assumed. Variations Energy Consumption Pond in energy of pumping may result from main sizing optimisation, System Options changes in final location of ponds or variations in irrigation pumping pressures depending on system design The base value is based on calculations for Chitungwiza. Energy Consumption BNR Although this is a relatively new plant literature indicates Systems constantly improving energy efficiencies and allowance has been made for this in the lower bound. Base values are calculated for the layouts assumed. Variations Energy Consumption Small SPS may result from actual pipe lengths, sump depths, discharge points etc. Pond staffing estimates are based on experience but have been increased to reflect generally high staffing levels seen at Staffing Ponds existing facilities. Bounds therefore favour a reduction in staff costs Base values are from Crowborough existing staffing levels factored for size of works. These are considered to be high Staffing BNR compared to the needs of the facilities so bounds favour a significant reduction in these prices. Table 3-9: Base Values and Bounds for Variables in Monte Carlo Simulation Factor Bounds Variable Base Value Lower Upper Construction Cost BNR $1.57Million / ML Nominal Capacity 0.75 1.1 Plants Construction Cost Pond Pond / Irrigation $22.4/ML Nominal Capacity 0.9 1.25 Systems Pond Only $27.3/ML Nominal Capacity Energy Price US$0.09 per kw.hr 0.9 1.3 Pond / Irrigation 451 kW.hr/ML (high pressure Energy Consumption irrigation assumed) 0.9 1.1 Pond System Options Pond Only 196kW.hr/ML Energy Consumption BNR 1423kW.hr/ML 0.7 1 Systems Energy Consumption Varies between 22 and 248kw.hr/ML depending 0.9 1.1 Small SPS on the station $400,000 per ann. 1st Stream Staffing Ponds 0.8 1 $200,000 per ann. subsequent streams $1,050,000 per ann. 1st Stream (30MLD) $1,000,000 per ann. subsequent stream (30MLD) Staffing BNR $400,000 per ann. 1st Stream (10MLD) 0.6 1 $360,000 per ann. subsequent Stream (10MLD) Table 3-10: Summary of Results from Monte Carlo Simulation (Analysis 2016 to 2030) US$M Sum of Cash Flow Costs Present Worth of Cash Flow Costs Option Opt. 1 Opt. 2 Opt. 3 Opt. 1 Opt. 2 Opt. 3 Mean 266 273 222 131 143 119 Median 266 274 222 131 143 119 Max 319 327 256 158 171 137 Gauff Ingenieure 3-135 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare US$M Sum of Cash Flow Costs Present Worth of Cash Flow Costs Min 212 219 185 105 115 99 The sensitivity analysis shows that between Options 1, 2 and 3: • Option 3 (ponds with irrigation in Mupfure Catchment) has lowest overall and discounted cost in 80% of simulations. • Options 1 and 2 show similar discounted cost in all simulations as they use many of the same input assumptions. Generally Option 1 (distributed BNR) is favoured between the two in the models due to the additional capital cost of the HSTS in Option 2. 3.7 Concluding Discussion on Proposed Options The final conclusions made from the arguments presented in the previous discussion and from the results of the costs cash flow comparison contained here are as follows: • The least cost alternative in terms of capital cost and operational cost for sewering the Harare South catchments is Option 3. This involves the construction of a trunk sewer around the south of the city and then pumping the sewage into the Mupfure catchment for treatment in ponds followed by disposal through land irrigation. • If the Mukuvisi water supply is not to be brought into operation or if it is considered of greater importance to keep all water within the Manyame catchment then a BNR solution is required. For this Option 2 is recommended. This involves the construction of a trunk sewer around the south of the city with a single new BNR plant at its terminus. • Whilst the models slightly favour Option 1 with numerous small BNR plants distributed within the catchment the final conclusion takes into account the following factors also: o In Option 2 Sewage is piped by gravity to below the Prince Edward WTW securing this source from pollution. o Option 1 has numerous points of failure at sewage pump stations and distributed BNR plants. Environmental costs, not considered here, are likely to be higher especially in an environment of deficient operational finance. o Utilities are better able to manage capital expenditure on sewage treatment than operational expenditure. Option 2 has significantly lower operational costs. o BNR plants require significant expertise to run well. This is more likely to be achieved at a large centralised plant than at numerous, dispersed facilities. This again will result in lower environmental costs. • If the City of Harare’s investment plans are unable to sustain the capital cost expenditure required for either of the above recommended options then the only viable alternative, which should be considered as the ‘Do Minimum’ option, will be a partial implementation of Option 1 under which the following would be done: Gauff Ingenieure 3-136 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare o Construct the lower reaches of the HSTS, below Chitungwiza in the the short term and a reduced firts phase WWTW for just these flows (Approx 12MLD). o Rehabilitate the Donny Brook Ponds and their associated irrigation disposal system to treat wastewater from Venetersberg, Mabvuku / Tafara and Donny Brook. o Provide Ruwa with new ponds and an irrigation disposal system to treat that towns sewage until connection to the HSTS is possibly in the future. Ruwa's existing ponds are too small, lack irrigation disposal and are on land controlled by Epworth and earmarked for redevelopment. o Keep Epworth entirely on on site sanitation (pit latrines etc.) for the forseeable future, until a connection to the HSTS is possible. Epworth has no ponds or access to other treatment facilities at this stage. o Delay the expansion of waterborne sanitation in the areas of ward 1 which will have no trunk sewer for 10 to 15 years, until the trunk sewer is extended past them. o Construct the main Harare South Wastewater Treatment Plant only as a long term measure (2030). Having reviewed the financial modelling for the city for the 2015 to 2030 horizon the final option of phased implementation has been recommended. This reduces the short term financial burden on the city of implementing the whole HSTS but has the drawback of leaving many satellite treatment operations in place in Donny Brook and Ruwa with the associated environmental risks to the Manyame catchment. Gauff Ingenieure 3-137 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare 4 ON-GOING WORKS 4.1 Zim-Fund Financing In December 2011, the Ministry of Finance through the Zim-Fund engaged the services of an Implementing Entity to, among other services, design and supervise implementation of immediate measures works in Harare and other five project towns. These works under the Urban Water Supply and Sanitation Rehabilitation Project (UWSSRP) are designed to reinstate existing water production and wastewater treatment plants. 4.1.1 On-going UWSSRP Water Projects The following scope of works is covered under the UWSSRP regarding the water supply components for Harare Municipality. Table 4-1: Works of UWSSRP on Water Supply System Location Scope of Works Objectives of intervention Morton Jaffray Unit 1: Water Treatment o Installation of proper flow meters in following Works mains; raw water main from Lake Chivero to raw water inlet chamber, raw water main from Lake Chivero to Clarifier No. 7, o Installation of Aluminium Sulphate solution transfer pumps, o Installation of Aluminium Sulphate solution dosing pumps, o Replacement of existing lime slurry preparation and dosing facilities, o Rehabilitation of the Chlorine Dosing System, o Replacement of pump sets No. 1 to 3, including all related motors, starters, pipework, valves and fittings and electrical control boards, o Installation of an electric powered chlorine cylinder lifting system. Morton Jaffray Units 2 & 3: Water Treatment o Installation of proper flow meters in following Works mains; raw water 2200mm Ømain from Lake Manyame to raw water mixing chamber, raw water 1390mm Ømain from Lake Manyame to raw water mixing chamber, o Installation of Aluminium Sulphate solution transfer pumps, o Rehabilitation of the lime slurry preparation and dosing facilities, o Installation of sodium silicate dosing pumps, o Replacement of sand to 16 rapid gravity sand filters, Gauff Ingenieure 4-138 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare o Refurbishment to filter under-drainage system, o Replacement of broken nozzles, o Replacement of all gallery pipework and valves, o Installation of an additional air compressor for the operation of pneumatically actuated valves, o Refurbishment of the Pulsator system of 3No. Clarifiers, including air pump, motor, starters and vacuum release devices, o Replacement of lateral pipes to 1No. Clarifier, o Replacement of baffles to 3No. Clarifiers, o Replacement of pump sets No. 4 to 6, including all related motors, starters, pipework, valves and fittings and electrical control boards, o Replacement of pump sets No. 7 to 10, including all related motors, starters, pipework, valves and fittings and electrical control boards, o Supplying spare parts for pump sets No. 11 to 14. • Rehabilitation of Unit 2 & 3 Buildings covering: o Rehabilitation of raw water intake building, o Rehabilitation of administration block, o Rehabilitation of Laboratory building. Prince Edward • Rehabilitation of the raw water pump-station, Water Treatment including: Works o Remedial works to concrete staircase treads, o Bitumen sealing to top of pumpstation roof, o Replacing all lights, o Supplying and installing 2 No. low lift raw water pumps complete with motors, valves, starters and MCC in the low lift pump station, o Changing pump No.4 suction, discharge pipe work and base plinth to accommodate a similar pump with capacity as pumps No.1, 2, and 3, o Painting work to walls. • Rehabilitation of Flash Mixing and Flocculation Tank, including: o Installation of 6 No. missing baffle plates at the dosing point. • Rehabilitation of Clarifiers, including: o Replacement of desludge valves. • Rehabilitation of Rapid Gravity Sand Filters, comprising: o Refurbishment of the underdrainage system, Gauff Ingenieure 4-139 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare o Replacement of broken nozzles, o Replacement of all gallery pipework and valves, o Replacement of 22 No. lights, o Provision of handrailing, o Replacement of filter sand, o Bitumen sealing to top of filter building roof, o Replacing all lights in pipe gallery. • Rehabilitation of Highlift Clear Water Pumpstation: o Supply and install 2 Nr. high lift clear water pump sets complete with motors, valves, starters and MCC in the High Lift Pump Station, o Replacing all lights highlift clear water pumpstation, • Rehabilitation of Chemical Building o Replacing all lights in highlift clear water pumpstation, o Bitumen sealing to top of chemical building roof, o Rehabilitation of alum dosing tanks, o Rehabilitation of lime dosing tanks, o Rehabilitation of chlorine dosing facilities, o Replacing all lights, o Painting work to walls and steel works. • General Site Works o Painting work to fence and external steel works, o Replacement of 55No. perimeter lights, o Replacement of 38 No. flood lights. 4.1.2 On-going UWSSRP Sanitation Projects The following scope of works is covered under the UWSSRP regarding the wastewater components for Harare Municipality. Table 4-2: Works of UWSSRP on Wastewater System Location Scope of Works Objectives of intervention Firle Sewage • Rehabilitation of Biological Trickling Filters, Treatment Works including: o Remedial works to spalling concrete and exposed rusting reinforcement, o Digging media to a depth of 1m to remove sludge, o Replacement of ladders to biological filters and distribution chamber, Gauff Ingenieure 4-140 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare o Replacement of pivots, bearings and distribution arms to biological filters, • Rehabilitation of Pond System (Firle 1&2), including: o Estimating, cleaning, removal, handling, transporting and disposal of wet sludge, o Repair of inlet, outlet structures, including installation of aluminium gates, valves and other metal fittings to distribution and collection chambers. o Inspecting and repairing pond embankments. • Rehabilitation of Effluent Pumping Station, including: o Installation of new effluent pumps, including all motors, pipework, valves, starters and electrical installations, o Installation of new effluent recirculation pumps, including all motors, pipework, valves, starters and electrical installations, o Upgrading of power supply to effluent pumping station. • Rehabilitation of Effluent Pumping Main, including: o Replacement of approximately 2000m of 675mm Ø AC pumping main, including valves, fittings and thrust blocks. Crowborough • Rehabilitation of Biological Trickling Filters, Sewage including: Treatment Works o Remedial works to spalling concrete and exposed rusting reinforcement, o Digging media to a depth of 1m to remove sludge, o Replacement of ladders to biological filters and distribution chamber, o Replacement of pivots, bearings and distribution arms to biological filters, • Rehabilitation of Pond System, including: o Estimating, cleaning, removal, handling, transporting and disposal of wet sludge, o Repair of inlet, outlet structures, including installation of aluminium gates, valves and other metal fittings to distribution and collection chambers, o Inspecting and repairing pond embankments. Donnybrook • Rehabilitation of Pond System, including: Stabilisation Ponds o Estimating, cleaning, removal, handling, Gauff Ingenieure 4-141 Greater Harare Water and Sanitation Investment Plan Appendix 4.1 Harare transporting and disposal of wet sludge, o Repair of inlet, outlet structures, including installation of aluminium gates, valves and other metal fittings to distribution and collection chambers, o Inspecting and repairing pond embankments. Little Marimba • Rehabilitation of damaged sections along the trunk Trunk Sewer sewer, including: o Relaying of damaged sections and support system. Supply of Goods • Supply of Laboratory Equipment; • Supply of Shop Tools and Equipment; and • Supply of Mandatory Spare Parts. Gauff Ingenieure 4-142 Greater Harare Water and Sanitation Strategic Plan Investment Plan Report Greater Harare Water and Sanitation Investment Plan APPENDIX 4.2: WATER AND SEWERAGE INFRASTRUCTURE ASSESSMENT REPORT - CHITUNGWIZA Gauff Ingenieure Greater Harare Water and Sanitation Investment Plan Appendix 4.2 Chitungwiza GREATER HARARE WATER AND SANITATION INVESTMENT PLAN APPENDIX 5.2: WATER AND SEWERAGE INFRASTRUCTURE ASSESSMENT REPORT CHITUNGWIZA Table of Contents 1 WATER SUPPLY.............................................................................................................................. 1-1 1.1 W ATER SOURCE .......................................................................................................................... 1-3 1.2 TRANSMISSION SYSTEM ............................................................................................................... 1-3 1.2.1 Hydraulic Modeling ............................................................................................................ 1-3 1.3 STORAGE RESERVOIRS ................................................................................................................ 1-9 1.4 DISTRIBUTION ZONES ................................................................................................................. 1-10 1.5 DISTRIBUTION NETWORK ............................................................................................................ 1-10 1.5.1 Pilot Zone Investigations .................................................................................................. 1-11 1.5.2 Proposed Investment measures ....................................................................................... 1-17 2 SEWERAGE ................................................................................................................................... 2-20 2.1 SEWER RETICULATION SYSTEM ................................................................................................... 2-20 2.1.1 Existing Catchment Areas and Sewer Network ................................................................. 2-22 2.1.2 Pilot Zone Investigations .................................................................................................. 2-23 2.1.3 Proposed Catchment Areas ............................................................................................. 2-23 2.1.4 Hydraulic Modeling .......................................................................................................... 2-25 2.1.5 Extension of Sewerage Network to New Development Areas ........................................... 2-28 2.2 SEWAGE PUMP STATIONS........................................................................................................... 2-28 2.3 ZENGEZA WWTW ..................................................................................................................... 2-29 2.3.1 Modified Conventional Treatment Works – Old Works ...................................................... 2-29 2.3.2 BNR WWTW .................................................................................................................... 2-30 2.3.3 Proposed Investment Measures ....................................................................................... 2-31 3 ON-GOING WORKS ....................................................................................................................... 3-32 Index of Tables Table 1-2: Network Modelling Scenarios ............................................................................................. 1-4 Table 1-3: Peak Hour Demand in each Ward-Chitungwiza .................................................................. 1-5 Table 1-4: Lowest Demand in each Ward-Chitungwiza ....................................................................... 1-6 Table 1-5: Velocities and Headloss per Unit Distance at Peak Hour Demand ...................................... 1-7 Table 1-6: Water Transmission Upgrade Measures............................................................................. 1-8 Table 1-6: Water Transmission Investment Measures ......................................................................... 1-9 Table 1-1: Water service on daily basis ............................................................................................. 1-11 Table 8-10: Network Rehabilitation Measures ..................................................................................... 1-18 Gauff Ingenieure I Greater Harare Water and Sanitation Investment Plan Appendix 4.2 Chitungwiza Table 1-9: Water Network Extension Measures................................................................................. 1-19 Table 2-1: Catchment Areas ............................................................................................................. 2-22 Table 2-2: Catchment Areas ............................................................................................................. 2-24 Table 2-3: Peak Season Sewer Flow for Proposed Catchment Areas-Chitungwiza ........................... 2-26 Table 2-4: Sewer Trunk Upgrade Measures ...................................................................................... 2-27 Table 2-5: Sewer Transmission Investment Measures ...................................................................... 2-27 Table 8-16: Tertiary Sewer Extension Investment Measures ............................................................... 2-28 Table 2-2: Condition Assessment of Conventional Works.................................................................. 2-30 Table 2-3: Condition Assessment of BNR Plant ................................................................................ 2-30 Table 3-1: Works of UWSSRP on Sewer System .............................................................................. 3-32 Index of Figures Figure 1-1: Principle layout of the water system of Chitungwiza............................................................ 1-1 Figure 1-2: Layout of Existing Water Supply Infrastructure .................................................................. 1-2 Figure 1-3: Sequence of Activities in the Pilot Area ............................................................................ 1-12 Figure 1-4: Network Elements in the Pilot Area .................................................................................. 1-13 Figure 1-5: Map of the Pilot Area (Water) ........................................................................................... 1-14 Figure 2-1: Schematic Layout of the Sewerage System of Chitungwiza .............................................. 2-20 Figure 2-2: Layout Map of Existing Sewer System ............................................................................. 2-21 Figure 8-5: Proposed Sewer Catchment Areas................................................................................... 2-25 Figure 2-4: Investment Measures at Wastewater Treatment Facilities ................................................ 2-31 Gauff Ingenieure II Greater Harare Water and Sanitation Investment Plan Appendix 4.2 Chitungwiza 1 WATER SUPPLY The Municipality of Chitungwiza receives bulk water from the City of Harare’s water treatment facilities which are mainly; Morton Jaffray Water Treatment Works and Prince Edward Water Treatment Works. The transmission system is designed in such a way that water can be drawn from both Prince Edward WTW and Morton Jaffray WTW. Overall, the city provides services to a population of 356,840 (2012 National Statistics). At present, the system has 55,669 connections, which are equipped with water meters most of which are not functional. The schematic layout of the system is presented in the following figure. Figure 1-1: Principle layout of the water system of Chitungwiza Gauff Ingenieure 1-1 288000 290000 292000 294000 296000 298000 300000 302000 Figure 1-2 Layout Map of Existing Water Supply Infrastructure ± 8012000 8012000 1:45,000 Datum WGS 84 Lake Seke 8010000 8010000 er Ri v ya m e St. Mary's an Harava Lake M Zengeza 1 Legend Reservoirs U T Reservoirs Zengeza 2 Rivers Zengeza 5 Rivers 8008000 8008000 Unit H Roads Residential Unit B Unit E Seke Reservoir Secondary Zengeza 4 T U Trunk Unit D Dams & Lakes Unit A Dams & Lakes Zengeza 3 Project Boundary Unit G Project Boundary Unit F Unit C 8006000 8006000 Unit J Unit O Unit K Unit N Unit M Unit P Unit L 8004000 8004000 Urgent Water Supply and Sanitation Rehabilitation Project Medium to Long Term Investiment Plan 8002000 8002000 288000 290000 292000 294000 296000 298000 300000 302000 Greater Harare Water and Sanitation Investment Plan Appendix 4.2 Chitungwiza 1.1 Water Source Prince Edward Water Treatment Works (WTW) is located approximately 22 km South of Harare adjacent to Prince Edward Dam also known as Seke Dam. The Water Treatment Works has a reported maximum peak production of 90,000 m3/day. The current average daily water production is reported to vary between 50,000 to 55,000 m3/day. During the rainy season when Prince Edward WTW is operating at full capacity, most of the supply to Chitungwiza is from Prince Edward WTW. Prince Edward WTW is supplied with raw water from the upstream Harava 1, Harava 2 and Seke Dams all along the Manyame River. During the dry season when Prince Edward WTW is not operating at full capacity due to insufficient water in the upstream dams, Chitungwiza is supplied from the Morton Jaffray WTW system. 1.2 Transmission System The transmission main from Prince Edward WTW starts off as a ND 600 steel main followed by a ND 225 branch after the bridge feeding an area called Mayambara which is under Harava Rural District Council. The ND 600 main continues before splitting into a 450 mm diameter main and a ND 525 main before the Police Station. The ND 450 main feeds the reservoirs located on the northern part of Makoni Shopping Centre. The ND 525 main also feeds the reservoirs and the reticulation network. The reservoirs can hydraulically be described as floating reservoirs. The ND 600mm diameter main has three off-takes feeding the following areas; • ND 225 off-take for Area 1 - Mayambara; • ND 300 off-take for Area 2 - St Mary`s & Manyame Park; • ND 300 off-take for Area 3 - Zengeza 1, 2, 3 & 5; • Area 4- ND 375 - off take for area 4-Tilcor, Zengeza 2, 3 & 4. • The ND 525 main has 3 number off-takes feeding the following areas; • ND 300 off-take for Area 5- Unit H,D,J, with interconnection to Unit K; • ND 375 off-take for Area 6- Unit A, C, F, M, L & K. 1.2.1 Hydraulic Modeling A hydraulic model was constructed in conformity with the existing transmission and primary network. The model was constructed to simulate the flow on the bulk mains from the PE WTW to the distribution network up to Makoni Reservoirs. This was used to check the capacity of the mains for the medium term (2020) and long term (2030) hydraulic loading. Modelling Parameters A hydraulic model requires several input parameters in order to simulate the actual conditions under which the network will be operating. These parameters are; the physical characteristics of the network and its boundary conditions (pipe roughness, elevations) and the hydraulic loading (Demand). Gauff Ingenieure 1-3 Greater Harare Water and Sanitation Investment Plan Appendix 4.2 Chitungwiza In order to build a realistic representation of the system, the age and material of the mains were considered with the friction factors altered to reflect the material of pipe and the age of pipe. Most mains in Chitungwiza are more than 30 years old. Therefore, it was deemed suitable to assume that the condition of these mains would be poor in places and hence; mains friction factors were increased to help reflect this. The elevations for model junctions and reservoirs were interpolated/extrapolated off the contour dataset obtained from Google Earth. The dataset had contour lines with an elevation interval of five meters. This data is fairly adequate for the purpose of modelling the trunk mains. More accurate surveys for transmission mains and reservoirs will be conducted for the final design phase. The hydraulic loading (water Demand) used for modelling the network has been calculated using population figures taken from the recently published report for the Census 2012 by the Zimbabwe National Statistics Agency (ZIMSTAT) as outlined in Chapter 3. A detailed analysis of demand calculations is outlined in Chapter 6. Different specific consumption figures were applied to the consumer categories to obtain the total consumption. Since the network had to be sized for peak hour demand, the peak hour factors were applied to consumption figures. The demand in each zone was obtained by overlaying the wards layer with the proposed zones layer in ArcView 10.1. The wards lie either completely within a zone or only partially. The extent by which a particular ward is contained in a zone was estimated in terms of percentage. The zone received this percentage of demand for that ward. The wards that fell wholly within a particular zone were allocated 100% to that zone. The various demands from the wards that intersect the zone were aggregated to get the total demand for the zone. Modelling Scenarios Two scenarios were used to depict the worst case operating conditions of the network, as presented in the table below. Table 1-1: Network Modelling Scenarios Scenario Scenario Description Peak factor Scenario 1 Peak hour demand and lowest levels in reservoirs 2.0 Scenario 2 Lowest demand during the night time and highest 0.5 water levels in reservoirs Scenario 1 - Peak hour demand and lowest levels in reservoirs Scenario 1 simulated the peak hour demand and lowest levels in reservoirs. The peak hour demand factor of 2.0 was applied to the model and impact towards the performance of the mains analysed. For any network analysis case study, it is important to model the ‘worst- case’ scenario so that all potential issues can be predicted with mitigation measures put in place at the earliest possible opportunity. The calculated peak hour flow in each ward is tabulated below. Gauff Ingenieure 1-4 Greater Harare Water and Sanitation Investment Plan Appendix 4.2 Chitungwiza Table 1-2: Peak Hour Demand in each Ward-Chitungwiza Ward Area 2020 Demand 2030 Demand Average Demand Peak Demand Average Demand Peak Demand (l/s) (l/s) (l/s) (l/s) 1 St Marys 17.87 35.74 16.32 32.64 2 St Marys 23.76 47.52 21.56 43.12 3 St Marys 18.14 36.27 17.00 34.01 4 St Marys 48.75 97.49 45.70 91.40 5 St Marys 19.31 38.62 18.10 36.21 6 Zengeza 5 30.80 61.60 31.84 63.68 7 Zengeza 1 14.10 28.20 13.22 26.44 8 Zengeza 1 17.79 35.58 16.68 33.35 9 Zengeza 2 15.10 30.20 14.16 28.31 10 Zengeza 2 18.61 37.22 20.41 40.82 11 Zengeza 3 16.80 33.60 15.75 31.50 12 Zengeza 3 76.72 153.43 71.92 143.84 13 Zengeza 4 20.48 40.97 18.98 37.95 14 Zengeza 4 37.95 75.90 35.58 71.15 15 Seke Unit D 35.83 71.66 33.59 67.18 16 Seke Unit J 26.28 52.55 24.63 49.27 17 Seke Unit K 32.38 64.76 29.71 59.43 18 Seke Unit L 57.04 114.07 64.01 128.01 19 Seke Unit F+C 29.56 59.13 27.72 55.43 20 Seke Unit E+H 20.03 40.05 18.77 37.55 21 Seke Unit A+B 44.85 89.70 39.14 78.28 22 Seke Unit O 28.55 57.11 26.77 53.54 23 Seke Unit N+P 51.85 103.69 48.61 97.21 24 Seke Unit M 38.07 76.13 35.69 71.38 25 Seke Unit G 33.39 66.79 32.10 64.21 SP 1 Seke CL 24.37 48.73 33.28 66.55 SP 2 Nyatsime 6.51 13.02 153.75 307.50 Farm Scenario 2 - Lowest demand during the night time and highest water levels in reservoirs Scenario 2 simulated the lowest demand during the night time and highest water levels in reservoirs. The peak hour demand factor of 0.5 was applied to the model and impact towards the performance of the mains analysed. For any network analysis case study, it is important to model the ‘worst-case’ scenario so that all potential issues can be predicted with mitigation measures put in place at the earliest possible opportunity. The calculated night flow (lowest demand) in each ward is tabulated below. Gauff Ingenieure 1-5 Greater Harare Water and Sanitation Investment Plan Appendix 4.2 Chitungwiza Table 1-3: Lowest Demand in each Ward-Chitungwiza Ward Area 2020 Demand 2030 Demand Average Lowest Demand Average Lowest Demand Demand Demand (l/s) (l/s) (l/s) (l/s) 1 St Marys 17.87 8.16 16.32 8.16 2 St Marys 23.76 10.78 21.56 10.78 3 St Marys 18.14 8.50 17.00 8.50 4 St Marys 48.75 22.85 45.70 22.85 5 St Marys 19.31 9.05 18.10 9.05 6 Zengeza 5 30.80 15.92 31.84 15.92 7 Zengeza 1 14.10 6.61 13.22 6.61 8 Zengeza 1 17.79 8.34 16.68 8.34 9 Zengeza 2 15.10 7.08 14.16 7.08 10 Zengeza 2 18.61 10.21 20.41 10.21 11 Zengeza 3 16.80 7.88 15.75 7.88 12 Zengeza 3 76.72 35.96 71.92 35.96 13 Zengeza 4 20.48 9.49 18.98 9.49 14 Zengeza 4 37.95 17.79 35.58 17.79 15 Seke Unit D 35.83 16.80 33.59 16.80 16 Seke Unit J 26.28 12.32 24.63 12.32 17 Seke Unit K 32.38 14.86 29.71 14.86 18 Seke Unit L 57.04 32.01 64.01 32.01 19 Seke Unit F+C 29.56 13.86 27.72 13.86 20 Seke Unit E+H 20.03 9.39 18.77 9.39 21 Seke Unit A+B 44.85 19.57 39.14 19.57 22 Seke Unit O 28.55 13.39 26.77 13.39 23 Seke Unit N+P 51.85 24.31 48.61 24.31 24 Seke Unit M 38.07 17.85 35.69 17.85 25 Seke Unit G 33.39 16.05 32.10 16.05 SP 1 Seke CL 24.37 16.64 33.28 16.64 SP 2 Nyatsime 6.51 76.88 153.75 76.88 Farm Results of the Modelling Simulations In the restructured network for the year 2020 and 2030 design horizons, the model was run using a peak hour demand factor of 2.0, and impact towards the performance of the mains analysed. The pressures observed within the network were substandard and far below the acceptable limits stipulated in the design criteria. According to national and regional guidelines the minimum pressure should be at least 10 metres (1.0 bars) in the main supplying pipes. The minimum operating pressure in the transmission mains was around below Zero. Gauff Ingenieure 1-6 Greater Harare Water and Sanitation Investment Plan Appendix 4.2 Chitungwiza The velocities experienced within most mains were less than the stipulated velocity limit in the inception report except for the major supplying mains i.e. the ND 600 bulk main supplying water to Chitungwiza, the ND 525 main supplying the Makoni Reservoirs, the ND 300 feeding Guzha Township, ND 225 feeding Guzha Township and the ND 300 supplying St Mary’s/Manyame Park. Higher velocities were also observed in the ND 375 off-take on Marapara Road, ND 100 supplying Zengeza 4 and the ND 300 supplying Unit D, J and K. The thematic map below shows the velocities experienced in the network after applying the peak hour factor. The table overleaf shows the velocities and headloss per unit distance (m/km) experienced in the major mains supplying water to Chitungwiza after applying a peak hour factor. Table 1-4: Velocities and Headloss per Unit Distance at Peak Hour Demand Section of Main Velocity (m/s) Headloss (m/km) Length (m) ND 600 from PE WTWS 6.51 97.00 2,553 ND 525 to Makoni RES 3.70 37.34 925 ND 300 to Guzha Township 3.85 83.76 230 ND 225 to Guzha Township 2.14 37.90 1,236 ND 300 to St Mary’s/Manyama 3.85 83.76 230 ND 375 offtake on Marapara Road 2.83 33.89 2,994 ND 300 to Unit D,J and K 2.98 50.17 520 Gauff Ingenieure 1-7 Greater Harare Water and Sanitation Investment Plan Appendix 4.2 Chitungwiza ND 100 to Zengeza 4 2.42 145.11 315 ND 300 from Pumped main from Makoni 3.37 64 90 Reservoir It is clear from the above results that sections of the mains indicated do not have the required hydraulic capacity to handle the extra demand required for the 2030 design horizon. The results of the model are presented in appendix 8.2. A further simulation was performed in an attempt to find the optimal upgrades required to provide adequate levels of service. It was hoped that, these changes to the network would help to reduce the levels of headloss per unit distance experienced along the lengths of the existing mains whilst also providing sufficient hydraulic head within the network. By increasing the diameter of the mains at these particular sections of the network, the extreme level of headloss per unit distance experienced along their lengths would be reduced significantly thus reducing the risk of future mains failures. Table 1-5: Water Transmission Upgrade Measures Pipe Diameter Section Upgrade Length (mm) of Main Parameters (m) ND 600 from PE WTWS 700 DI 2.86 6.57 2,553 ND 525 to Makoni RES 600 2.96 8.33 925 ND 300 to Guzha Township 450 DI 1.47 3.19 230 ND 225 to Guzha Township 315 PVC 1.22 3.72 1,236 ND 300 to St Mary’s/Manyama 450 DI 1.69 4.11 1465 ND 375 offtake on Marapara Road 500 DI 1.08 11.37 2,994 ND 300 to Unit D,J and K 400 DI 1.41 3.37 2888 ND 100 to Zengeza 4 150 PVC 1.07 6.69 315 ND 300 from Pumped main from 400 DI 2.42 9.37 90 Makoni Reservoir From Table 1-6, it can be recommended that, instead of upgrading the ND 600 Steel bulk main supplying Chitungwiza from PE, a new ND 700 DI main be installed parallel to the existing ND 600 from PE. This will be used together with the existing ND 600 main to supply the existing water network and the proposed developments on Nyatsime farm and Seke CL area. A further scenario was analysed using the night flow factor of 0.5, and impact towards the performance of the mains analysed. The observed pressures are way above the acceptable limits stipulated in the design criteria. According to national and regional guidelines, the minimum pressure should be at least 10 metres (1.0 bars) in the main supplying pipes, whilst the maximum pressure should not exceed 60m. The model predicted that pressures of more than 60m will be experienced in the 2030 design horizon. Gauff Ingenieure 1-8 Greater Harare Water and Sanitation Investment Plan Appendix 4.2 Chitungwiza It is recommended that, pressure management measures be implemented by the installation of pressure reducing valves. This will subsequently reduce excessive pressures and UFW caused by pipe bursts due to excessive pressures. A detailed pressure management exercise is recommended which would establish the number of pressure reducing valves required to minimise the observed excessive pressure. The thematic map below shows the excessive pressures observed in most places in Chitungwiza after applying the night flow factor of 0.5. A further simulation was run using the peak hourly factor which would replicate the water demand in the proposed developmental areas. The model was used to help predict the pipe sizes that would be required in these areas in the 2020 and 2030 design horizons. The water transmission investment measures are presented in the table overleaf. It should be noted that, the transmission mains proposed satisfy the 2030 service requirements but will be implemented under the project in the medium term. Table 1-6: Water Transmission Investment Measures Item Unit Medium-term project Water Pipes ND 200 PVC (OD 225) m 7,157 ND 250 PVC (OD 280) m 4,742 ND 315 PVCI m 11,380 ND 450 DI m 12,633 1.3 Storage Reservoirs The reservoirs for Chitungwiza are located on the north eastern outskirts of the town north of Makoni Shopping Centre at the end of the network. The reservoir site has four ground Gauff Ingenieure 1-9 Greater Harare Water and Sanitation Investment Plan Appendix 4.2 Chitungwiza reservoirs of equal capacity and an elevated tank. They have a total storage capacity of approximately 46, 000 m3. A small booster pump station houses the pump sets used to transfer water to the elevated tank. From a visual inspection, the tanks are in a good state with no cracks, scaling concrete or rusting rebar. They are in good working order but, largely redundant since they never fill up because of their location in the network and the limited water supply from Harare. Considering the long term demand of around 85,000 m3, it is clear that the existing storage capacity will not be sufficient. Hence we recommend the following investment measures: • Construction of a new 22,000 m3 /d concrete reservoir at Makoni Reservoir Site; • Construction of a new 15,000 m3/d concrete reservoir at highest point on Nyatsime Farm Development. 1.4 Distribution Zones There are currently no defined water supply zones in Chitungwiza. Water is supplied via interconnected pipes which are fed directly by the ND 600 from the PE WTW. The excess water which is stored in the Makoni Reservoir is fed back into the system. Due to the topography of the ground in the City of Chitungwiza, it was not possible to formulate new supply zones. Subsequently, the existing layout of the water network was adopted. 1.5 Distribution Network The distribution network comprises of a combination of AC pipes in very old sections of the city, Polyethylene and PVC pipes in newer sections of the city (15 years old). The Municipality of Chitungwiza advised that, some sections in the distribution network continuously suffer from pipe bursts. This is attributed to inadequate design especially poor specification of the pipes with respect to pressure ratings and also probably poor workmanship. The areas most vulnerable are; Unit N (ND 150 AC Class 12, and ND 125 AC Class 12 and Unit K (ND 100 AC Class 12, and ND 75 AC Class 12). Some pipes have surpassed their life span especially, in the old suburbs (Zengeza 1, 2, 3, 4 and St Marys). No issues have been raised in the recently installed networks. The recently installed networks include the following areas: • ND 90 Polyethylene pipes in Zengeza; • ND 110 PVC pipes in St Mary’s (Manyame Park); • ND 90 PVC pipes in New Developments and infill areas; • ND 75 PVC pipes in New Developments and infill areas. It is worth noting that, there are control valves and bulk flow meters on all the branches, but most of them are not working. The branches come off the 525 mm Ø rising main to the storage reservoir resulting in low lying areas getting water ahead of the high level areas, hence the need to address the issue of control valves. Gauff Ingenieure 1-10 Greater Harare Water and Sanitation Investment Plan Appendix 4.2 Chitungwiza The oldest section of the distribution network was constructed in 1978 and the network has been expanding based on the growth of the city. The layout of the network is structured in eight independent supply zones, with the last supply zone to Unit O formed as a loop so that water can be supplied from both the service reservoirs and also from Unit N. The water supply to Chitungwiza is erratic and varies in terms of continuity of supply but has an approximate supply rate of 500 m3/hour. To manage supplies to the various suburbs, the municipality has a rationing criterion in which certain areas/zones get water on a particular day in a week. The table overleaf shows a summary of the water supply schedules for Chitungwiza. The water supply to Chitungwiza is erratic and varies in terms of continuity of supply but has an approximate supply rate of 500 m3/hour. To manage supplies to the various suburbs, the municipality has a rationing criterion in which certain areas/zones get water on a particular day in a week. The table overleaf shows a summary of the water supply schedules for Chitungwiza. Table 1-7: Water service on daily basis Supply Zones Supply day Area 1- Old St Mary’s and Manyame Park Monday Area 2- Zengeza 1 Tuesday Area 3- Industrial Area continuous Area 4- Unit H Thursday Area 5 – Unit A Saturday 1.5.1 Pilot Zone Investigations The pilot area water and sewer network investigations constitute part of task D in the ToR, which states that “…the water distribution network condition assessment will be done using sampling methods aimed at establishing parameter relationships that can be used to extrapolate network rehabilitation investment requirements.” Hence, the purpose of the pilot area investigations was to assess the condition of the water distribution and sewerage networks and recommend rehabilitation investment measures for the entire system using statistical methods. Methodology and Approach The pilot area was selected in liaison with the council following the selection criteria specified in the ToR. It was chosen to be conveniently small, but characteristically representative of the entire network so that extrapolations to the entire network could be done with reasonable levels of confidence. The activities carried out in the pilot area and the sequence of operations is shown in the figure below. Gauff Ingenieure 1-11 Greater Harare Water and Sanitation Investment Plan Appendix 4.2 Chitungwiza thorough inspection of thorough mapping of all valves, fire hydrants Liaison with the council the water and sewer to select a pilot area and other appurtenant network elements in the installations in the pilot pilot area area excavation , cutting and Selection and testing of Inspection service water inspection of service working water meters meters connection pipe samples spot checks in other areas Extrapolation of results in of the network and the pilot area to come up discussions with Presentation of results to with rehabilitation engineering department to the council identify other problem measures for the entire areas that need attention network Figure 1-3: Sequence of Activities in the Pilot Area The inspections and assessments in the pilot area provided relationships among age, material and condition of the network elements, which were used to extrapolate network rehabilitation investment requirements for the entire network. In addition to investigations in the pilot area, spot checks in other parts of the network were conducted to validate the findings in the pilot area and the subsequent extrapolations. Location and Characteristic of the Pilot Area The pilot area chosen for the investigation was St Marys. The area was chosen because it is the oldest suburb and is densely populated. It was assumed that, investigations in the area would fairly represent the condition of the distribution networks and service connections in Chitungwiza. Based on household flow meter testing conducted in the study area, all domestic meters are not working and will need to be replaced. Most flow meters do not register flows, with some completely vandalised. St Marys is supplied by a ND 225 main. The water distribution mains within the pilot zone are ND 75 AC. The water network is made up of the elements shown in the figure overleaf: Gauff Ingenieure 1-12 Greater Harare Water and Sanitation Investment Plan Appendix 4.2 Chitungwiza Network Pipes Service connections • 3,797m of ND 50 AC pipes • 504 No ND 15 service connections • 64 m of ND 75 AC pipes • 504 Kent water meters, representing • 1060m of ND 100 AC pipes 100% service coverage and metering Figure 1-4: Network Elements in the Pilot Area The sewer network is made up of 2,251 m of ND 150 Vitrified Clay (VC), 363 m of ND 225 AC and 730 m of ND 300 AC pipes laid parallel to the water pipes. The map in figure…. overleaf shows the location and characteristics of the pilot area. Gauff Ingenieure 1-13 292600 292800 293000 293200 Figure 1-5 Map of the Pilot Area (Water) m AC 50m m 50m 50m 50m m ± m AC 50m m 50m 50m 50m m AC 8009800 8009800 AC m AC m AC AC AC m AC 50m 1:2,500 AC Datum WGS 84 m AC 50m 50m m AC Urgent Water Supply and m AC 50m 50m m Sanitation Rehabilitation Project Medium to Long Term Investiment Plan AC 100 50m m m AC AC 75m 50m m AC 75m m m 50m 8009600 8009600 mA m AC AC C m 50m AC 100m m AC 50m m AC 50m 50m m m AC m AC 50m 100 100 AC m m 50m C mA mA m 100 50m m 225 mA AC C m m 50m m C mA AC C C m mA m AC 150 50m n y a m e River Ma C Lake Seke mA 75m 75m m 8009400 8009400 C mA AC Harava Lake 75m Legend É & Transition Chambers 150 C mm A 3 Q Wastewater TW m 75 mA Seke Reservoir U T Ú [ Sewer Pump Stations C Chitu_WaterPipes m AC 75m Rivers 75m m AC m AC Study Zone Boundary 75m Dams & Lakes m AC 75m mA C 75m m AC 75mm AC 0 0.5 1 2 km AC 75m 75m m m m 0 1:80,000 AC 10 292600 292800 293000 293200 Greater Harare Water and Sanitation Investment Plan Appendix 4.2 Chitungwiza Findings and Recommendations – Water Distribution Network All the network elements are over 30 years old. There have not been any major rehabilitation or replacement undertakings since the town was developed. In the oldest parts of town, water pipes and appurtenant structures date as far back as 1978. Water pipes St Marys is supplied by a ND 225 main. The water distribution mains within the pilot zone are ND 75 mm mains. The AC pipes appear to be in good condition despite the age – not very surprising considering that AC pipes have a lifespan of 50-70 years. Even though AC pipes undergo gradual degradation in the form of corrosion (i.e., internal calcium leaching due to conveyed water (lower Langelier index = more leaching) and/or external leaching due to groundwater), the council has not reported enough pipe failures to suggest that the pipes need replacement. The exposed pipes from the replaced pipes did indicate that the pipes were in fair condition except for those blocked as a result of siltation. Valves and fire hydrants There were no hydrants in the pilot area. Isolation valves were found randomly installed on the distribution mains. Generally, all the valves are in a bad shape; they are rusty and leaky. Valve chambers are generally in a very poor condition, damaged and filled with stones as shown in the photos below. Furthermore, there are no covers and those that do have, they have been vandalised. Therefore, the conclusion based on the above is that, all network appurtenant fittings and structures must be replaced as most network leakages occur there. Vandalised valve chamber Gauff Ingenieure 1-15 Greater Harare Water and Sanitation Investment Plan Appendix 4.2 Chitungwiza Significant amount of water is lost after the meter resulting in unnecessary water use/ wastage. If metered, these wastages lead to increased water bills, which may not be paid by the consumers. If unmetered, these wastages result in high NRW levels, as flat rate billing considers only a limited average amount of water usage. Wastage can be reduced and water conservation measures be implemented through rehabilitation of household installations and household education and awareness programs. Even though Household investments are normally not part of project funding, a provision in the investment plan for public awareness campaigns aimed at sensitizing consumers on the motivation and financial benefits associated with investing in internal plumbing repairs is made. It is further recommended that council should make it a policy to fix leaking taps and pass on the costs to the consumers as a way to minimise water losses. Vandalised water meter House connection Flow meter testing Service connections are taken off the 75 mm tertiary mains using cast iron saddles. Each saddle serves 4 ND 20 service connections. As can be seen from the photos below, the service connections are heavily corroded and incrusted. This was expected, given that these connections have been in service for over 30 years. Most of the leakages in the network occur on these lines. It is therefore recommend that, all house connections be replaced including the saddles. It is further recommend that, the replacement of service lines should be of HDPE. HDPE house connections have proved to be durable and reliable. HDPE pipes have a smooth internal surface that does not corrode or tuberculate and maintains its flow capability over time. HDPE service connection pipes have a cost benefit associated with their longevity. The polyethylene pipe industry conservatively estimates the service life for HDPE pipes to be 50-100 years. This relates to savings in replacement costs for a long period. Gauff Ingenieure 1-16 Greater Harare Water and Sanitation Investment Plan Appendix 4.2 Chitungwiza Water testing meter Encrusted pipes 1.5.2 Proposed Investment measures Network Rehabilitation Measures In order to bring the physical water losses down to around 20% by 2030, the network will be systematically rehabilitated (replacing pipes and valves in bad condition). The ToR stipulates that the network rehabilitation measures for the entire network shall be determined using statistical methods 1 . Pipe and valve condition assessments were conducted in a pilot area that could be deemed as representative of the entire network. The details of the pilot area investigations have been presented in Chapter 5. The findings of the investigation are summarised below: • The AC distribution pipes are reported to be in good condition despite their age; • All of the gate valves are in poor condition. Network leakages occur at these fittings; • The majority of service connections are corroded and incrusted. This is where most of the network leakages occur; • The majority of water meters are non-functional and few functional ones are not measuring water usage accurately; • Significant amount of water is wasted after the meter resulting in unnecessary water use/ wastage. In light of the above findings, the following measures are recommended: • Since the AC pipes are still in good condition, they should be left in service except for the broken pipes identified by council; • All network appurtenant structures such as valves and fire hydrants should be replaced; 1 Detailed network investigations will be conducted at feasibility or final design stage. Gauff Ingenieure 1-17 Greater Harare Water and Sanitation Investment Plan Appendix 4.2 Chitungwiza • All service connections and water meters should be replaced; • All bulk water meters should be replaced; • Under normal circumstances, line after the service meter and the plumbing system in a property is the responsibility of the property owner or water user. But, if the property is not metered, there is no incentive for the water user to keep their plumbing system in good condition and reduce water wastage. In a water supply scheme where most water users are not metered (or meters are not working) as is the case in Chitungwiza, there are huge water losses at the properties and this is usually part of the NRW since the customers are billed on normal usage estimates. Hence, we recommend that council should, firstly, meter all customers and then implement a water conservation programme that has elements of rehabilitating household plumbing installations and household education and awareness programmes. The finances for such a programme are part of the investment plan. Given the recommendations outlined above, the investment measures needed to rehabilitate the network and reduce physical losses are presented in the table below. The network rehabilitation measures proposed will be implemented under the medium term project. Table 8-8: Network Rehabilitation Measures Item Unit Medium-term project Replacement/Installation of section valves ND 50 Gate no. 409 ND 75 Gate no. 1,190 ND 100 Gate no. 544 ND 150 Gate no. 88 ND 200 Gate no. 4 ND 250 Gate No. 2 ND 300 Gate no. 1 ND 400 Butterfly no. 1 Replacement of service connection and water meters Service connections (20 m long) no. 56,000 Water meters no. 56,000 Extension of Water Supply Services to new Areas The water reticulation network will be extended to cover the new development areas. As outlined in Chapter 3, most of the additional population in the medium and long term will settle on Nyatsime Farms. There will also be some infill growth in the following areas; Seke CL. The water network requirements in the new development areas have been calculated on the basis of population and the per capita infrastructure requirements. The per capita infrastructure requirements were calculated using the existing network quantities and the population from the 2012 census. The parameters below were used to calculate the infrastructure requirements in extension areas • House hold size (assuming one connection per household): 6 people • Tertiary pipe network lengths per capita – ND 75: 1.2 m/ca. Gauff Ingenieure 1-18 Greater Harare Water and Sanitation Investment Plan Appendix 4.2 Chitungwiza • Tertiary pipe network lengths per capita – ND 100: 0.8 m/ca. The table below shows the investment measures needed to extend the water network to the new development areas. Table 1-9: Water Network Extension Measures Item Unit Medium term 2030 project Additional Population Water reticulated no. 29,359 132,575 Sewer reticulated no. 28,990 130,910 Tertiary Water Network Requirements ND 100 m 23,487 106,060 ND 75 m 29,359 132,575 Water Service Connection Domestic (15 mm) no. 4,893 22,096 Non-domestic (20 mm) (20%) of domestic no. 979 4,419 Gauff Ingenieure 1-19 Greater Harare Water and Sanitation Investment Plan Appendix 4.2 Chitungwiza 2 SEWERAGE 2.1 Sewer Reticulation System The wastewater infrastructure in Chitungwiza consists of both on-site and off-site sanitation systems. Building and housing guidelines, by-laws and standards stipulate that Low density properties depending on soil conditions, are not connected to the sewerage system. They are provided with on-site septic tanks and soak-away pits. High and medium density properties, on the other hand, are all connected to the sewerage system. The sewerage system in Chitungwiza consists of laterals, collector mains, pump stations and trunk mains that collectively convey wastewater to Zengeza Sewage Treatment Works. Figure ….overleaf shows the schematic layout of the sewerage system in Chitungwiza. Figure 2-1: Schematic Layout of the Sewerage System of Chitungwiza Gauff Ingenieure 2-20 288000 290000 292000 294000 296000 298000 300000 302000 Figure 2-2 Layout Map of Existing SewerDJH System 8012000 8012000 r Lake Seke ± 1:45,000 ve mA C Datum WGS 84 8010000 8010000 Ri 375m me n ya C ON mC 300m Ma St Marys Pump Station 1 Harava Lake Ú [ 22 5m mA C AC m St Marys Pump Station 2 Legend 0m 30 Ú [ 225mmAC É & 22 5m St Marys Pump Station 3 mA Ú Transition Chambers C [ 22 5m mA 225 mm AC C É Transition Chambers & C mA 40 0m 0m 30 30 mA 0m C mA C Wastewater TW AC m 5m 8008000 8008000 3 Q 22 É & Wastewater TW É & 45 0m Sewer Pump Stations mA C C mA AC 5m Ú [ Sewer Pump Stations 300mm 22 300mmAC C mA 0m Sewer Lines Projected 30 300mmAC AC mA C 450m Sewer Lines Projected m mA C 5m 450m 22 AC m Rivers 0m 45 AC m 525mmA C 5m 22 Rivers AC 22 m Roads 5m 0m 15 m AC AC 675 m mm 5m 22 AC Residential 8006000 8006000 A C mm 300 m AC AC Secondary AC 0m m 0m m 45 5m 675m mA C 15 62 Trunk 300mmAC Chitungwiza WWTW 3 Q Dams & Lakes AC AC 525mm mm C N O 300 C m Dams & Lakes AC 5m m 22 5m 67 37 Ú 5m C [ 22 7LOFRU6HZHU36 AC m AC 300m mC ON C C 600m 375mmCONC mA mAC m 5m 0m 52 20 8004000 8004000 *UHDWHU+DUDUH:DWHUDQG 6DQLWDWLRQ,QYHVWLPHQW3ODQ 8002000 8002000 288000 290000 292000 294000 296000 298000 300000 302000 Greater Harare Water and Sanitation Investment Plan Appendix 4.2 Chitungwiza 2.1.1 Existing Catchment Areas and Sewer Network Chitungwiza has currently seven catchment areas according to the drainage patterns of the city. The existing catchment areas are; Old St Mary’s, St Mary’s/Manyame Park, Zengeza 1 & 5, Zengeza 2, 3 & 4, Seke North & South and Industrial Catchment Areas. The following table summarises the characteristics of the catchment areas. Table 2-1: Catchment Areas Catchment Areas Suburbs covered General characteristics Old St Mary’s Wastewater from this catchment area discharges Old St Mary’s into a ND 225 AC pipe which subsequently drains into Pump Station No. 2. Pump Station No 2 pumps waste water flow to Pump Station No. 3 where it is pumped to Zengeza Wastewater Treatment Works. St Mary’s Manyame St Mary’s/Manyame Wastewater from this catchment area discharges Park Park. into a ND 375 AC pipe which subsequently drains into Pump Station No. 1. Pump Station No 1 pumps via a ND 400 AC pipe to Zengeza Wastewater Treatment Works. New St Mary’s St Mary’s, parts of Wastewater from this catchment area discharges Zengeza 1 and 5 into a ND 225 AC pipe which subsequently drains into Pump Station No. 3. Pump Station No 3 pumps via a ND 300 AC to Zengeza Wastewater Treatment Works. Zengeza 1 & 5 Zengeza 2, part of Wastewater from this catchment area discharges Zengeza 1 & 5 into a ND 300 AC pipe which subsequently drains into the ND 450 AC to Zengeza Wastewater Treatment Works. Zengeza Zengeza 2, 3 and 4, Wastewater from this catchment area discharges Seke Unit D and J into ND 225 and ND 450 AC pipes which subsequently drain into ND 675 AC collector main to Zengeza Wastewater Treatment Works. Seke North and Seke North and South Wastewater from this catchment area discharges South into a ND 525 AC pipe which subsequently drains to Zengeza Wastewater Treatment Work. Industrial Industrial Wastewater from this catchment area discharges into the Tilcor Pump Station which subsequently pumps wastewater flow to Zengeza Wastewater Treatment Works. The sewer network comprises collector mains ranging in size from ND 100 to ND 525 and trunk/outfall sewers up to ND 825. Most of the drawings showing the layout plans and longitudinal profiles of the existing collector, sub-trunk and trunk sewers could not be Gauff Ingenieure 2-22 Greater Harare Water and Sanitation Investment Plan Appendix 4.2 Chitungwiza located. Due to lack of sufficient information, it was not possible to establish the exact length of the existing network and number of man-holes. 2.1.2 Pilot Zone Investigations The detailed sewer network investigations were carried in the same pilot area as for the water distribution network. The same methodology and approach was followed. Findings and Recommendations – Sewerage Network The sewer collection system in the pilot area comprises of ND 150 Vitrified Clay (VC) and AC material. The sewer pipes are generally in good condition though; there is silt/solids accumulation due to insufficient sewage flow. The structural integrity of all inspected manholes is considered to be good. However, there seems to be insufficient flow in the sewers to flush away the solids (silt and human waste) as observed in the photos below. Given the findings elaborated above, it is recommend that measures should be put in place for routine cleaning of sewer pipes and ensuring that there is sufficient flow in the sewers by improving water supply services. Phase 1 of the UWSSRP has provided sufficient sewer cleaning equipment that the councils will be using to address the problem of sewer blockages. Investment should also be directed towards replacing those sewers that were reported by the council to have collapsed, including reconstructing the manholes that are damaged. Sewer manholes blocked due to siltation in pipes 2.1.3 Proposed Catchment Areas The sewerage system in Chitungwiza was optimised for the 2020 and 2030 design horizon. The optimization of the system looked at the effective way of conveying the sewage without pumping, which will effectively reduce the pumping costs. The outcome of this optimization process was the formulation of three main sewer catchment areas and the introduction of a new sewerage treatment plant which will serve part of Chitungwiza and the proposed developments on Nyatsime Farms earmarked to be developed in the 2020 and 2030 design horizons. Gauff Ingenieure 2-23 Greater Harare Water and Sanitation Investment Plan Appendix 4.2 Chitungwiza Catchment 1 comprising of St Mary’s and part of Zengeza, Catchment 2 comprising Zengeza and Seke, Industrial Catchment comprising the industrial area and Nyatsime catchment comprising of the proposed Nyastime Development. The following table summarises the characteristics of the proposed catchment areas. Table 2-2: Catchment Areas Catchment Areas Suburbs covered General characteristics Catchment 1 This area is a proposed catchment which will St Mary’s and part of serve St Mary’s and parts of Zengeza in the 2020 Zengeza. and 2030 design horizon. The assumption in formatting this catchment is that, the existing pumping regime will be done away with. All the wastewater for this catchment will discharge into a proposed ND 450 pipe which will run along the Manyame River. The ND 450 pipe will discharge into a ND 500 main, which will discharge into the proposed Waste Water Treatment Works downstream of the confluence of Manyame River and Nyatsime River. Catchment 2 Wastewater from this catchment area discharges Zengeza and Seke into two main outfall sewers; Zengeza area Areas discharges into the ND 525 AC sewer main which discharges into the ND 675 AC sewer main, which subsequently discharges into Zengeza Waste Water Treatment Works. The second direction of flow comes from Seke area. This area discharges into a ND 675 AC outfall sewer, which in turn discharges into an ND 825 AC outfall sewer before discharging into Zengeza Waste Water Treatment Works. Industrial Industrial Area Waste water from this catchment discharge into Catchment the Tilcor Pump Station, which subsequently pumps to Zengeza Waste Water Treatment Works Nyatsime Proposed Nyatsime This catchment is proposed to discharge into a Catchment Development. ND 500 DI main, which will discharge into the proposed Waste Water Treatment Works downstream of the Nyatsime River. The proposed sewer catchment areas were established according to the drainage patterns of Chitungwiza. Except for the Industrial catchment area, the proposed Nyatsime Farm Catchment, Catchments 1 and 2 were assumed to collect sewage flow by gravity. The Industrial catchment was assumed to continue to use pumps, to transport sewage to the existing waste water treatment works. Gauff Ingenieure 2-24 Greater Harare Water and Sanitation Investment Plan Appendix 4.2 Chitungwiza Sewage collected from each sewer catchment area was obtained by overlaying the wards layer with the proposed catchment areas layer in ArcView 10.1. Some of the wards lie completely within a catchment area or only partially. The extent by which a particular ward is contained in a catchment area was estimated in terms of percentage. The catchment area received this percentage of demand for that ward. The wards that fell wholly within a particular catchment area were allocated 100% to that catchment area. The various sewer flows from different wards that intersect the catchment area were aggregated to get the total demand for the catchment area. Figure 8-6 overleaf shows the proposed catchment areas. Figure 8-3: Proposed Sewer Catchment Areas 2.1.4 Hydraulic Modeling A hydraulic model was constructed in conformity with the proposed restructured network. A primary network grid was laid out for each proposed zone and sized for the medium term (2020) and long term (2030) hydraulic loading. Modelling Parameters A hydraulic model requires several input parameters in order to simulate the actual conditions under which the network will be operating. These parameters are; the physical characteristics of the network and its boundary conditions (pipe roughness, manhole inverts) and the sewer loading. In order to build a realistic representation of the system, the age and material of the mains were considered with the friction factors altered to reflect the material of pipe and the age of Gauff Ingenieure 2-25 Greater Harare Water and Sanitation Investment Plan Appendix 4.2 Chitungwiza pipe. Most of the mains in Chitungwiza are in excess of 30 years old, therefore, it was deemed suitable to assume that the condition of these mains would be poor in places and hence; mains friction factors were increased to help reflect this. The invert levels of the manholes on the collector mains were interpolated/extrapolated off the contour dataset obtained from Google Earth. The dataset has contour lines with an elevation interval of five meters. This data is fairly adequate for the purpose of higher level modelling of collector mains. More accurate surveys for collector mains, pump stations and ponds will be conducted for the final design. The hydraulic loading (Sewer Flow) used for modelling the network has been calculated using population figures taken from the recently published report for the Census 2012 by the Zimbabwe National Statistics Agency (ZIMSTAT) as outlined in Chapter 3 of the main report. A detailed analysis of the sewer loading calculations is outlined in Chapter 5 of the main report. The sewer flow loading in each zone was obtained by overlaying the wards layer with the proposed zones layer in ArcView 10.1. The wards lie either completely within a zone or only partially. The extent by which a particular ward is contained in a zone was estimated in terms of percentage. The zone received this percentage of demand for that ward. The wards that fell wholly within a particular zone were allocated 100% to that zone. The various flow loads from the wards that intersect the zone were aggregated to get the total demand for the zone. The restructured network was simulated using the maximum peak season demand. The peak season demand factors were added to the model and impact towards the performance of the collectors mains analysed. For any network analysis case study, it is important to model the ‘worst-case’ scenario so that all potential issues can be predicted with mitigation measures put in place at the earliest possible opportunity. The calculated peak season flow in each catchment area is tabulated in the table below. Table 2-3: Peak Season Sewer Flow for Proposed Catchment Areas-Chitungwiza Description Unit Design Parameter Factor 2020 Factor 2030 Demand Demand Catchment 1 m3/day 1.25 10,316.84 1.25 10,316.84 Catchment 2 m3/day 1.25 28,342.35 1.25 29,632.61 3 Industrial Catchment m /day 1.25 3,729 1.25 3,729 Nyatsime Catchment m3/day 1.25 338 1.25 8,826 Results of the Modelling Simulations In the restructured network for the year 2020 and 2030 scenarios, the observed velocities within the collector mains were fairly within acceptable limits stipulated in the design criteria except for ND 150 AC main collecting sewer flow from Seke South and the ND 225 concrete main collecting sewer flow from Seke North (See Appendix 8.3). Gauff Ingenieure 2-26 Greater Harare Water and Sanitation Investment Plan Appendix 4.2 Chitungwiza These mains surcharged during the simulation. The maximum flow ratio and maximum depth of over 1.0 experienced in these sections of mains, indicates that pipes are running at full bore and as such, the hydraulic grade line was above the diameter of the pipe. This indicates that, these sections of mains do not have enough hydraulic capacity to handle the demand for the 2030 scenario and needs to be upsized. A further simulation was performed in an attempt to find the optimal upgrades required to provide adequate levels of service. It is hoped that these changes to the network would help to reduce the surcharge experienced during the simulation. Table below shows the sections of mains that surcharged during the simulation and the recommended upgrades. Table 2-4: Sewer Trunk Upgrade Measures Section Pipe (mm) Length Max/Flow Upgrade Pipe Ratio (mm) Main from Seke South ND 150 AC 1,188 1.00 250 PVC Main from Seke North ND 225 954 1.00 315 PVC conc. Velocities in sewer mains should normally be kept within certain limits to avoid deposition of sediments on the lower end. To maintain self-cleaning velocities in the sewers a minimum velocity of 0.5 m/s is recommended and to prevent scour a maximum velocity range of 5-12 m/s is recommended, depending on the material. To follow the conservative approach a maximum velocity of 5 m/s is chosen for all materials, even if studies have shown that erosion effects observed at velocities greater than 4 m/s are only minimal. The maximum velocities experienced within the collector mains are below the 2 m/s stipulated in the inception report and above the 0.75m/s recommended for self-cleansing velocity. Pipes at the selected gradient should be capable of conveying the ultimate flows and give minimum velocities at peak daily flow. A further simulation was run which replicated the waste water flow in the proposed development areas. The model was used to help predict the sewer pipe sizes that will be required in these areas in the 2020 and 2030 design horizons. The sewer transmission investment measures are presented in the table below. It should be noted that the investment measures satisfy the 2030 service requirements but will be implemented under the project in the medium term. Table 2-5: Sewer Transmission Investment Measures Item Unit Medium term project Sewer Pipes ND 150 PVC M 8,965 ND 200 PVC (OD 225) M 8,246 ND 250 PVC (OD 280) M 6,139 ND 315 PVC M 3,169 ND 450 PVC M 4,040 ND 500 RC M 616 Gauff Ingenieure 2-27 Greater Harare Water and Sanitation Investment Plan Appendix 4.2 Chitungwiza 2.1.5 Extension of Sewerage Network to New Development Areas The sewer network will be extended to cover the new development areas. As outlined in Chapter 3, most of the additional population in the medium and long term will settle in Longlands, Braemar A, Dunnotar, Cawdor, Tantallon and Edinburgh which are loosely referred to as Nyatsime Farms. There will also be some infill growth in the existing areas. The sewer network requirements in the new development areas have been calculated on the basis of population and the per capita infrastructure requirements. The per capita infrastructure requirements were calculated using the existing network quantities and the population from the recent census. The parameters below were used to calculate the infrastructure requirements in extension areas • House hold size (assuming one connection per household): 6 people • Tertiary sewer collector lengths per capita: 1.2 m/ca. The table below shows the investment measures needed to extend the sewer network to the new development areas. Table 8-6: Tertiary Sewer Extension Investment Measures Item Unit Medium term 2030 project Additional Population Water reticulated no. 29,359 132,575 Sewer reticulated (MD & HD) no. 28,990 130,910 Tertiary Sewer collectors ND 150 M 34,788 157,092 ND 100 M 14,495 65,455 Sewer Service Connections no. 5,798 26,182 2.2 Sewage Pump Stations The Tilcor Industrial Area Pump Station is situated on the south of the Zengeza WWTW. This pump station is not operational and it is in a dilapidated state. There were two surface pumps installed in a dry well but due to ground water seepage, the well gets flooded and the building has been undermined by the water. The building doors and windows have warped and are no longer functional. The horizontal pumps have been removed and the starter panel has been tempered with and parts are missing. The medium term and long term investment measures required are also outlined in the same table; Medium Term Project Long Term (2030) • Replacement of • Replacement of submersible pumps submersible pumps including control gear including control gear. Gauff Ingenieure 2-28 Greater Harare Water and Sanitation Investment Plan Appendix 4.2 Chitungwiza 2.3 Zengeza WWTW Zengeza WWTW consist of two treatment facilities constructed in phases – the Modified Conventional Treatment Works and the Biological Nutrient Removal Works 2.3.1 Modified Conventional Treatment Works – Old Works The modified conventional treatment works consist of the following process units; Intake Works The inlet works consist of two parallel screen channels, which were supposed to be isolated by penstocks which are completely corroded. According to the original design, the two screen channels would comprise a coarse screen (with approximately 60mm spacing between bars) and a medium screen (with approximately 30mm spacing between bars), manually raked. However, only the medium screens are in place at present, but are highly corroded and damaged. Grit removal is supposed to take place in two parallel baffled grit chambers. The baffles (A.C. plates) are no longer in place and the weir penstocks are completely corroded and missing in some areas. The two grit removal chambers are nearly full with sand. Rusting Air-lift pipework with ND 150, discharges grit into a shallow grit separation box, with missing aluminium sluice gates. Anaerobic Ponds The pond system consists of 4 parallel sets of ponds, i.e. 3 ponds in series each. All ponds are concrete lined with a sloped floor and a sloped collection trough to allow for gravity flow of the settled sludge towards the scour valves (one per pond) for desludging. Two ponds are interconnected by sluice gates in order to be able to take-out of operation one of the two ponds for maintenance (cleaning) purposes. A third pond can be by-passed by making use of a separation chamber, which was supposed to be equipped with sluice gates. All the ponds are filled up with sand, sludge and weeds. All gates submerged steel plates (at the outlet of the ponds) and valves are corroded and some are missing. The ponds are surrounded by ND 150 A.C. pipes, which supply recycled effluent from the outlet of the biological trickling filters by means of the effluent pumping station back to the ponds for scum breaking purposes. The recycled effluent is distributed on top of the ponds by making use of numerous jet pipes (ND 50). However, these jet pipes are heavily corroded and not operational. Biological Trickling Filters The works comprises a total number of 5 trickling filters, approximately 38 m, in diameter and 4.0 m deep. The filters are filled with granite rocks of average grain size of around 50 to 80mm from local quarries. The trickling filters were constructed between 1975 and 1980. Gauff Ingenieure 2-29 Greater Harare Water and Sanitation Investment Plan Appendix 4.2 Chitungwiza They have, however, undergone major repair works to inlet columns and distributor arms, between 1997 and 1999. The ND 450 incoming pipes to the five trickling filters are partly broken and valves would be required to isolate individual trickling filters for maintenance purposes. The concrete structures of the trickling filters do show cracks and leakages and thus have to be sealed. Effluent Pumping There are 2 no. Effluent Pump Stations. The old Pump Station was constructed in 1975 and comprises a total of 4 pumps. The new Pump Station was constructed in 1995 and comprises a total of 5 pumps, out of which 3 are treated effluent pumps to Imbwa farm and 2 are recirculation pumps to anaerobic ponds for scum breaking purposes. Table 2-7: Condition Assessment of Conventional Works Structure Condition assessment notes Civil structures The civil structures including pavements are in a poor state. Buildings The administration building and superstructures of the pump stations are in a reasonable, to good condition and can be repaired relatively inexpensively Pipework All the pipework and related appurtenances are still intact and in good condition. Mechanical Equipment All pumps are in a poor condition. Electrical Equipment Most of the electric motors are in need of repairs or replacement 2.3.2 BNR WWTW The BNR Plant was constructed with some financial support from Japan in 2000. It has a nominal plant capacity of 20,000 m3/d. It consists of the following process units; • New Inlet Works complete with a grit system discharging grit to the existing Old Works grit removal system. • Primary sedimentation tanks, • Equalisation basin, • BNR Tank comprising; an anaerobic basin, anoxic basin, and an aerobic basin, • Final Sedimentation Tanks, • Maturation Ponds, • Sludge Thickeners, • Sludge Digesters. The plant was operated from the day of commissioning up to 2004. The condition assessment of the works is summarised in the following table. Table 2-8: Condition Assessment of BNR Plant Structure Condition assessment notes Gauff Ingenieure 2-30 Greater Harare Water and Sanitation Investment Plan Appendix 4.2 Chitungwiza Civil structures The civil structures including pavements are still in good condition. Buildings The administration building and superstructures of the pump stations are in a reasonable to good condition and can be repaired relatively inexpensively Pipework All the pipework and related appurtenances are still intact and in good condition. Mechanical Equipment All the mixers are in good condition. Electrical Equipment Most of the electric motors are in need of repair or replacement The estimated wastewater flows from the Chitungwiza catchment areas over the medium to long term horizon are as outlined below; • Peak season sewage flow for 2012- 34,210 m3/day, • Peak season sewage flow for 2020- 42,015 m3/day, and • Peak season sewage flow for 2030- 53,725 m3/day. The above implies that present sewage treatment facilities are hydraulically adequate to service existing areas that will not be affected by proposed development. However, in Chitungwiza, development over the medium and long term horizon will be concentrated in Longlands, Braemar A, Dunnotar, Cawdor, Tantallon and Edinburgh. The above areas have been assumed to drain into a new wastewater treatment works that will be part of the Greater Harare Medium to Long Term Investment Plan which is proposing the creation of an integrated sewage collection and treatment system covering; Mabvuku and Tafara, Ruwa, Ventersburg, Epworth, Harare South, Chitungwiza catchment area 1 and Nyastime Farms. 2.3.3 Proposed Investment Measures Therefore, the investment measures for wastewater treatment required in Chitungwiza for the 2030 horizon will be as detailed in the Greater Harare Medium to Long Term Investment Plan. Below is an outline of the various investment measures required in Chitungwiza. Medium Term project Long Term (2030) • Rehabilitation of the Biological Nutrient • Replacement of effluent pumps and Removal treatment works, control gear, • Replacement of mixers, aerators and • Rehabilitation of the modified pumps for the BNR conventional wastewater treatment works • Replacement of effluent pumps and control gear, • Replacement of mixers, aerators and pumps for the BNR Figure 2-4: Investment Measures at Wastewater Treatment Facilities Gauff Ingenieure 2-31 Greater Harare Water and Sanitation Investment Plan Appendix 4.2 Chitungwiza 3 ON-GOING WORKS In December 2011, the Ministry of Finance through the Zim-Fund engaged the services of an Implementing Entity to, among other services, design and supervise implementation of immediate measures works in Chitungwiza and five other project towns. The work covered the design of identified immediate measures with respect to existing water production and wastewater treatment plants and is being carried out at the moment. The following scope of works is covered under the UWSSRP regarding the water supply components in Chitungwiza. Table 3-1: Works of UWSSRP on Sewer System Scope of Works Location Objectives of intervention Sewage Works Rehabilitation of Inlet Works Increase flows to wastewater Zengeza WWTW treatment plants and improve effluent qualities Rehabilitation of Anaerobic Ponds Improve sewage treatment Zengeza WWTW and reduce incidence of disease Rehabilitation of Biological Filters Improve sewage treatment Zengeza WWTW and reduce incidence of disease Rehabilitation of Effluent Pump Stations Zengeza WWTW Improve effluent pumping to farms and reduce spillage into Nyatsime river Supply of Goods Supply of Laboratory Equipment Municipality Reduce incidence of disease Supply of vehicles, vacuum tankers, jetting Municipality Reduce and prevent sewage machines and rodding equipment overflows of sewer network (this is a public hazard that increases the risk of cholera), improve flow in sewage network Supply of Mandatory Spare Parts Municipality Improved management efficiency, revenue collection Gauff Ingenieure 3-32 Greater Harare Water and Sanitation Strategic Plan Investment Plan Report Greater Harare Water and Sanitation Investment Plan APPENDIX 4.3: WATER AND SEWERAGE INFRASTRUCTURE ASSESSMENT REPORT - EPWORTH Gauff Ingenieure Greater Harare Water and Sanitation Investment Plan Appendix 4.3 Epworth GREATER HARARE WATER AND SANITATION INVESTMENT PLAN APPENDIX 4.3: WATER AND SEWERAGE INFRASTRUCTURE ASSESSMENT REPORT EPWORTH Table of Contents 1 WATER SUPPLY.............................................................................................................................. 1-1 1.1 W ATER SOURCES ........................................................................................................................ 1-1 1.1.1 Description of water sources .............................................................................................. 1-1 1.1.2 Raw Water Pump Stations and Intakes .............................................................................. 1-1 1.1.3 Raw Water Transmission Mains ......................................................................................... 1-1 1.2 W ATER TREATMENT W ORKS ......................................................................................................... 1-1 1.3 BOOSTER PUMP STATIONS ........................................................................................................... 1-1 1.4 TRANSMISSION SYSTEM ............................................................................................................... 1-1 1.4.1 Existing Transmission System Description ......................................................................... 1-2 1.4.2 Investment Measures ......................................................................................................... 1-2 1.5 STORAGE RESERVOIRS ................................................................................................................ 1-3 1.5.1 Existing Reservoirs ............................................................................................................ 1-3 1.5.2 Proposed Investment Measures ......................................................................................... 1-3 1.6 DISTRIBUTION NETWORK .............................................................................................................. 1-3 1.6.1 Distribution zones and DMAs ............................................................................................. 1-3 1.6.2 NRW assessment .............................................................................................................. 1-4 1.6.3 Proposed Investment measures ......................................................................................... 1-5 1.7 EMERGENCY W ATER SUPPLIES ..................................................................................................... 1-6 2 SEWERAGE ..................................................................................................................................... 2-7 2.1 SEWAGE SUB CATCHMENTS ......................................................................................................... 2-7 2.2 SEWER RETICULATION SYSTEM ..................................................................................................... 2-7 2.3 TRANSMISSION SEWERS ............................................................................................................... 2-7 2.4 SEWAGE PUMP STATIONS............................................................................................................. 2-8 2.5 SEWAGE TREATMENT ................................................................................................................... 2-8 2.6 SEWERAGE BOUNDARY ................................................................................................................ 2-8 2.7 ON- SITE SANITATION SUPPORT .................................................................................................... 2-9 Gauff Ingenieure I Greater Harare Water and Sanitation Investment Plan Appendix 4.3 Epworth Index of Tables Table 1-1 Long Term Primary and Secondary Distribution Investments ..................................................... 1-3 Table 1-2 Demand Management Areas ..................................................................................................... 1-4 Table 2-1 Long Term Transmission Sewer Investments ........................................................................... 2-8 Index of Figures Figure 1-1 Epworth Transmission and Storage Schematic - Existing ......................................................... 1-1 Figure 1-2 Epworth Transmission and Distribution Schematic - Proposed.................................................. 1-2 Gauff Ingenieure II Greater Harare Water and Sanitation Investment Plan Appendix 4.3 Epworth 1 WATER SUPPLY 1.1 Water Sources 1.1.1 Description of water sources Epworth has only one source of water which is the City of Harare via the Ventersberg Tanks. For the supply route from Morton Jaffray WTW to Ventersberg refer to the City of Harare Report. 1.1.2 Raw Water Pump Stations and Intakes None 1.1.3 Raw Water Transmission Mains None 1.2 Water Treatment Works None 1.3 Booster Pump Stations There are no booster pumping stations in Epworth. 1.4 Transmission System Figure 1-1 below shows the transmission system for Epworth, in schematic form: Figure 1-1 Epworth Transmission and Storage Schematic - Existing DN500 1075m Ventersberg DN450 785 DN400 1285 WARD 1 DN300 DN400 785 2400m WARD 7 WARD 6 DN250 775 DN350 DN200 WARD 2 633m 1100m HARARE EPWORTH WARD 5 DN200 DN200 2075 2220 WARD 3 WARD 4 Gauff Ingenieure 1-1 Greater Harare Water and Sanitation Investment Plan Appendix 4.3 Epworth 1.4.1 Existing Transmission System Description Only one source of treated water is available to Epworth from the City of Harare’s Ventersberg Tanks, directly into the supply network via a 1075m long DN500 supply line. 1.4.2 Investment Measures Figure 1-2 below shows the proposed future transmission/ distribution system for Epworth, in schematic form: Figure 1-2 Epworth Transmission and Distribution Schematic - Proposed DN500 Proposed // Line 1075m Same dia. as existing Ventersberg DN450 unless indicated 785 DN400 1285 WARD 1 DN300 DN400 785 2400m WARD 7 WARD 6 DN250 DN200 775 DN350 (DN350) WARD 2 633m 1100m HARARE EPWORTH WARD 5 DN200 DN200 (DN300) 2220 2075 WARD 3 WARD 4 Short Term Investment Measures Epworth has seen a total absence of water for many years and even with water available has a very limited distribution network. The initial focus in Epworth will therefore be on achieving 24 hours supply in the areas with existing networks and rolling out a programme of water kiosks to provide full coverage with safe drinking water. The existing network will be quite adequate for this and large increases in demand are not expected to develop initially. Therefore no work is programmed to increase pipe sizes in the transmission and distribution system in the short term. Long Term Investment Measures As Epworth’s water supply situation normalizes it will be necessary to reinforce the primary and secondary distribution system as tabulated below as a large and growing population increasingly demands stand connections, without flow limiters to the water networks. Gauff Ingenieure 1-2 Greater Harare Water and Sanitation Investment Plan Appendix 4.3 Epworth As seen from Figure 1-2 above the principal Employed has been to provide for parallel mains to those already in place. It is assumed that the mains already in place will have multiple connections to the network. The new mains will be laid with limited, metered interconnections to the existing to allow for improved pressure and demand management. Table 1-1 Long Term Primary and Secondary Distribution Investments Note Description of Pipeline Investment Required Reason for Investment Refers Transmission/ Primary/ Secondary Distribution a Ventersberg to Ward 1 975m of DN500 Ductile Increased general flow ‘Overspill’ Area Iron parallel to existing requirements DN500 b From Ward 1 tee to Ward 2500m of DN400 (// to Increased general flow 7 to tee off to ward 2 existing DN400) requirements c Through Ward 2 to Ward 2500m of DN200 (// to Increased general flow 5 existing DN400) requirements d Tee at south of ward 1 to 2200m of DN350 (// to Increased general flow tee off to ward 3 and 4 existing DN350 and requirements DN200) e Line from ward 6, south 4200m of DN300 (// to Increased general flow into ward 4 existing DN200) requirements f Through part of Ward 7 785m of DN300 (// to Localised bottleneck in supply existing DN300) capacity after end of DN400 1.5 Storage Reservoirs 1.5.1 Existing Reservoirs Epworth has no existing storage reservoirs. 1.5.2 Proposed Investment Measures Epworth Council would like to construct an elevated tank at the Overspill area on the basis that this will allow them to better manage demand. However, discussion with the modellers for the Harare network indicates that this would be a very inefficient location for storage compared to the nearby and much larger Ventersberg tanks. Therefore within this investment plan no reservoirs are includes for within the Epworth Area. 1.6 Distribution Network 1.6.1 Distribution zones and DMAs The following Zones are logically identified from the network layout. Currently poor valves etc. mean that many of the zones are heavily interconnected and do not constitute demand Gauff Ingenieure 1-3 Greater Harare Water and Sanitation Investment Plan Appendix 4.3 Epworth management areas. Also in many cases there is very limited supply network in the Zone indicated: Table 1-2 Demand Management Areas DMA Source of Supply Comment Existing Town Areas Ward 1 DN500 from Ventersberg. All other DMZs are supplied through ward 1 Onward supply to wards 3 and 5 Ward 2 DN 400 from Ward 1 through ward 2 Ward 3 DN200 from Ward 2 Ward 5 Existing DN350 on boundary of Wards 1 In future ward 5 could be subdivided and 2 into northern and southern halves with separate supply each Future Supply may include supply through ward 2 Ward 4 DN200 from ward 6 Only a small area is currently developed. Major expansion expected in this ward Ward 6 DN200 southern part of ring from ward 5 Only a small area is currently developed. Major expansion in to DN300 northern part of ring from Ward 7 Rockview is expected Wards 7 DN400 from Ward 1 Only a small area of the ward has water network. 1.6.2 NRW assessment Bulk and Block Metering Bulk and block metering is absent and new metering will be needed throughout as soon as water is restored. Distribution Networks The Ruwa distribution networks were reportedly in relatively good condition when water was last regularly supplied. The condition cannot be assessed now as water has been entirely absent for many years. Incidents of vandalism have been noted, especially at locations where public water points used to be provided. Consumer Metering The Council Reports that almost all consumers either have never had a meter or have a faulty meter. Gauff Ingenieure 1-4 Greater Harare Water and Sanitation Investment Plan Appendix 4.3 Epworth 1.6.3 Proposed Investment measures Short Term Investment Measures – Non Revenue Water Currently there is near zero non revenue water in Epworth as no water is supplied. As soon as supplies are restored however the proportion of non revenue water is likely to be high. The majority of the effort at non revenue water reduction will take place in the short term investment timeframe. Investment measures proposed are: • A programme of valve replacement to allow proper demand zoning and management. This covers all valves within the system. • A programme of installation and or replacement of bulk and bock meters to allow proper accounting for water. This covers all meters within the system • A programme for the replacement of all consumer meters within the system, domestic and commercial. • A programme of technical assistance to assist in identification of losses and developing programmes for NRW reduction. This will include detailed network mapping, customer database cleanup and customer awareness programmes. • Following from improved metering and modelling it will be possible to identify areas of the tertiary distribution system where losses are high and target a programme of pipe and house connection replacement at these areas. At this stage the Council has not identified any specific area as highly problematic. • Level control valves for reservoirs will be replaced as necessary to prevent losses through overflows. As major expansions to the primary and secondary distribution network will not take place in the short term but expansions of supply to new house connections and many kiosks will take place, it is recommended that all connections in the short term be fitted with flow limiters to assist the Local Board in maintaining 24 hour supply and reasonable network pressures. Short Term Investment Measures – Reticulation Expansion Short term expansion of the tertiary water supply network will be concentrated in the Rock View area of Epworth where expansion is already underway. This is earmarked as a medium density development and is key to the Local Board’s revenue raising strategy. Once again it is recommended to install flow limiters to ensure 24 hour supply. Long Term Investment Measures – Non Revenue Water The long term measures in NRW reduction will largely involve a continuation of the activities in the short term. Specific investments allowed for are: • Replacement of all bulk and block meters. Experience indicates these have a life not exceeding 8-10 years and those installed in 2015-2017 will therefore need replacement before 2030. • Replacement of all consumer meters. Experience indicates these have a life not exceeding 8-10 years and those installed in 2015-2017 will therefore need replacement before 2030. Gauff Ingenieure 1-5 Greater Harare Water and Sanitation Investment Plan Appendix 4.3 Epworth Long Term Investment Measures – Reticulation Expansion Long term expansion of the tertiary water supply network will be in areas earmarked for growth of Epworth beyond its current boundaries and areas of settlement that are yet to be formalised. The bulk of the long term expansion into areas with no current supply networkwill occur in: • Ward 6 • Ward 4 • Ward 3 1.7 Emergency Water Supplies With the considerable water shortages that Epworth has been experiencing the Local Board has an ongoing programme to supply water through strategically located boreholes as follows: - 6 No Boreholes with handpumps were installed in a joint programme with a church Water Point with Hand Borehole Pump A once off testing of all boreholes was carried out and all were found to have high iron content but met requirements for potable water. Short Term Investment Measures Initially a major programme of construction of water kiosks throughout the coverage area of Epworth is required to ensure that the whole population has access to clean water. This is essential as restoration of sewerage will take many years and contamination of shallow wells will remain a problem. Discussions with the Local Board indicate that the rollout of Kiosks should follow some restoration of supplies to existing serviced areas. otherwise there may be strong resistance to the kiosks from residents who fear that the network will not be restored once kiosks are in place. Long Term Investment Measures Many areas will likely need to maintain their kiosks into the long term. Gauff Ingenieure 1-6 Greater Harare Water and Sanitation Investment Plan Appendix 4.3 Epworth 2 SEWERAGE 2.1 Sewage Sub Catchments A small area of Epworth, within Wards 1, 2, 5 and 7 currently has a sewerage network. Ponds were constructed to collect and treat the sewage from these areas but were quickly overbuilt and were never commissioned. Therefore the sewerage network was never commissioned either. 2.2 Sewer Reticulation System The sewerage system covering most areas that have water supply has never been commissioned. As soon as water supply is restored there are many properties that do have water connections and demand for a sewage system will grow. Discussions with the local board indicate that sewer pipes are likely to be in good condition whilst manholes will require sand removal and in about 50% of cases, reconstruction of the cover slab. Short Term Investment Measures In the short term, the inability to treat any sewage generated in Epworth means that the area must remian on on site sanitation systems. Long Term Investment Measures In the long term improvement to the sewer network in Epworth will commence with the activation of the sewer network that was previously installed but never commissioned. This will involve limited replacements, extensive grit removal and refurbishment of nearly all manholes on this system. Long term expansion of waterborne sanitation in Epworth will depend on the water supply network first being reinforced such that there is sufficient supply for all households with waterborne sanitation. Only once this occurs can the sewer network be expanded. 2.3 Transmission Sewers Epworth requires a single main sewer to link it to the Donny Brook to Lyndhurst Farm sewer. Node numbering refers to Figure 7-10: Short Term Investment Measures In the short term Epworth will have no outfall sewer and no treatment facilities and therefore no works will be done on sewerage. This will be delayed until the Long Term when the Harare South Trunk Sewer is in place. Long Term Investment Measures Gauff Ingenieure 2-7 Greater Harare Water and Sanitation Investment Plan Appendix 4.3 Epworth Table 2-1 Long Term Transmission Sewer Investments ID Model Nodes Investment Required Reason for Investment New Mains 1 J23 to J291 New 1450m of DN250 uPVC 2 J291 to J292 1260m of DN350 uPVC 3 J292 t J299 1020m of DN450 uPVC 2.4 Sewage Pump Stations Epworth has no sewage pumping and none is proposed. 2.5 Sewage Treatment Epworth has an existing pond set which was never commissioned and is now overbuilt and used as a sports field and so cannot now be commissioned. It is not proposed to install any treatment in Epworth but rather it shall be linked to the existing but not yet commissioned sewer line from Donny Brook to Lyndhurst farm. Epworth Sewage Ponds 2.6 Sewerage Boundary The concept of a sewerage boundary has been proposed. This forms a boundary outside which the town will not provide waterborne sanitation (potable water will generally be supplied). In the case of Epworth the following Sewerage Boundaries are proposed: Short Term The boundary shall contain only those areas where sewer lines have been laid in the past but which were not commissioned. Lined within this boundary will be commissioned but the network will not be extended outside of it. Long Term Gauff Ingenieure 2-8 Greater Harare Water and Sanitation Investment Plan Appendix 4.3 Epworth The sewage boundary in the long term shall be the outer boundary formed by Wards 1 to 7 with their current definition. Sewerage will not be provided outside of these boundaries. Furthermore, within these boundaries sewerage will not be provided to any area that requires pumping in order to reach the outfall pipe. 2.7 On- Site Sanitation Support Many areas of Epworth will remain without waterborne sanitation, even in the long term. Sewage system investments will take many years to implement and some area will remain outside of the sanitation boundary for the town even in the long term. In these areas support must be given for the proper use of on site sewage disposal and treatment systems. Support will include: • In areas of high water table where pit latrines and pour flush latrines are not practical, communities will need support to deploy and manage urine separation composting toilets. This type of toilet offers a good solution in these areas but as they require a more significant structure than pits or pour flush toilets they are often unaffordable. In addition users must be trained in their proper use and communities must find a source of ash which has to be added to the composting solids and is not readily available in Harare where people do not cook on wood stoves. • In other areas pour flush toilets are clearly the preference of the householders and are seen to be installed where ever sufficient water is available. These offer a cheap alternative to a full waterborne solution with significant benefits over pit latrines. Pour flush systems should only be encouraged in areas where water supply is piped in. Support to communities wishing to use this type of toilet may include: o Improvements to water supply such that the householders have sufficient water to operate pour flush systems o Training of builders in good practices for construction of pour flush toilets and soakaways. o Provision of subsidised components such as cover slabs and squat pans to improve the affordability of pour flush systems • Only where water supplies are very scarce will pit latrines be favoured by house holders. In future, reliance on pit latrines should therefore be limited to areas where no formal water supply system is in place. Support to communities on pit latrines may include: o Training of builders in good practices for construction of pit latrines. o Provision of subsidised components such as cover slabs, squat pans and ventilation pipes to improve the affordability of quality pit latrine systems o Training of householders in methods of maintaining the toilets and preventing the breeding of insects in the toilets. Gauff Ingenieure 2-9 Greater Harare Water and Sanitation Strategic Plan Investment Plan Report Greater Harare Water and Sanitation Investment Plan APPENDIX 4.4: WATER AND SEWERAGE INFRASTRUCTURE ASSESSMENT REPORT - NORTON Gauff Ingenieure Greater Harare Water and Sanitation Investment Plan Appendix 4.4 Norton GREATER HARARE WATER AND SANITATION INVESTMENT PLAN APPENDIX 4.4: WATER AND SEWERAGE INFRASTRUCTURE ASSESSMENT REPORT NORTON Table of Contents 1 WATER SUPPLY.............................................................................................................................. 1-1 1.1 W ATER SOURCES ........................................................................................................................ 1-1 1.1.1 Description of water sources .............................................................................................. 1-1 1.1.2 Supply Capacity ................................................................................................................. 1-1 1.1.3 Raw Water Pump Stations and Intakes and Transmission Mains ........................................ 1-1 1.1.4 Raw Water Investment Measures....................................................................................... 1-1 1.2 NORTON WTW ............................................................................................................................ 1-1 1.2.1 WTW Investment Measures ............................................................................................... 1-1 1.3 BOOSTER PUMP STATIONS ........................................................................................................... 1-1 1.3.1 Existing System ................................................................................................................. 1-1 1.3.2 Proposed Investment Measures ......................................................................................... 1-1 1.4 TRANSMISSION SYSTEM ............................................................................................................... 1-1 1.4.1 Existing Transmission System Description ......................................................................... 1-2 1.4.2 Investment Measures ......................................................................................................... 1-3 1.5 STORAGE RESERVOIRS ................................................................................................................ 1-5 1.5.1 Existing Reservoirs ............................................................................................................ 1-5 1.5.2 Proposed Investment Measures ......................................................................................... 1-6 1.6 DISTRIBUTION NETWORK .............................................................................................................. 1-6 1.6.1 Distribution zones and DMAs ............................................................................................. 1-6 1.6.2 NRW assessment .............................................................................................................. 1-7 1.6.3 Proposed Investment measures ......................................................................................... 1-8 1.7 EMERGENCY W ATER SUPPLIES ..................................................................................................... 1-9 2 SEWERAGE ................................................................................................................................... 2-11 2.1 SEWAGE SUB CATCHMENTS ....................................................................................................... 2-11 2.2 SEWER RETICULATION SYSTEM ................................................................................................... 2-13 2.3 TRANSMISSION SEWERS ............................................................................................................. 2-13 2.4 SEWAGE PUMP STATIONS........................................................................................................... 2-14 2.4.1 Existing Sewage Pump Station Condition ......................................................................... 2-14 2.4.2 Proposed Investment Measures ....................................................................................... 2-16 2.5 SEWAGE TREATMENT ................................................................................................................. 2-17 2.5.1 Existing Sewage Treatment Facilities ............................................................................... 2-17 2.5.2 Existing Works Capacity................................................................................................... 2-19 2.5.3 Investment Measures ....................................................................................................... 2-19 Gauff Ingenieure I Greater Harare Water and Sanitation Investment Plan Appendix 4.4 Norton 2.6 SEWERAGE BOUNDARY .............................................................................................................. 2-23 3 ON-GOING WORKS ....................................................................................................................... 3-25 3.1 NORTON W ATER SUPPLY PROJECT .............................................................................................. 3-25 3.2 GIZ FINANCING ......................................................................................................................... 3-26 Index of Tables Table 1-1 Short Term Primary and Secondary Distribution Investments..................................................... 1-3 Table 1-2 Long Term Primary and Secondary Distribution Investments ..................................................... 1-4 Table 1-3 Reservoir Storage - Norton ........................................................................................................ 1-5 Table 1-4 Proposed Reservoir Storage - Norton ........................................................................................ 1-6 Table 1-5 Demand Management Areas ..................................................................................................... 1-7 Table 2-1 Long Term Transmission Sewer Investments .......................................................................... 2-13 Table 2-2 Pump Station Data – Tangatara SPS New Pumps ................................................................... 2-17 Table 2-3 Pump Station Data – Maridale SPS New Pumps ..................................................................... 2-17 Table 2-4 Pump Station Data – New Norton WWTW Effluent Pump Station ............................................ 2-21 Table 2-5 Pump Station Data – Ward 6 Anaerobic Pond Pump Station.................................................... 2-22 Table 2-6 Pump Station Data – Facultative Pond Pump Station............................................................... 2-23 Index of Figures Figure 1-1 Norton Transmission and Storage Schematic - Existing ............................................................ 1-2 Figure 1-2 Norton Transmission and Storage Schematic - Proposed ......................................................... 1-3 Figure 2-1 Norton Existing Sewerage Catchments Schematic ................................................................. 2-11 Figure 2-2 Norton Proposed Sewerage Catchments Schematic............................................................... 2-12 Gauff Ingenieure II Greater Harare Water and Sanitation Investment Plan Appendix 4.4 Norton 1 WATER SUPPLY 1.1 Water Sources 1.1.1 Description of water sources Norton currently obtains all of its water from Morton Jaffray WTW. A DN300 steel treated water supply line 4.3km long feeds the town’s reservoirs on a hill to the east of the town from the WTW. 1.1.2 Supply Capacity The existing supply has a capacity of between 8 and 10MLD, depending on the pumping pressure at the Morton Jaffray WTW. Modelling for Harare indicates that pressures at Morton Jaffray will be about 12.5bar at the discharge manifold once the refurbishment is complete. On this basis the existing line can supply around 8MLD to Norton. Current supplies are also around this figure. 1.1.3 Raw Water Pump Stations and Intakes and Transmission Mains The town currently has no raw water supply of its own although a project has been underway for some time to develop one. This is discussed in Section 4. 1.1.4 Raw Water Investment Measures As discussed in Section 4 there are no investments recommended in raw water supplies. 1.2 Norton WTW The town currently has no water treatment works of its own although a project has been underway for some time to develop one. This is discussed in Section 4. 1.2.1 WTW Investment Measures As discussed in Section 4 there are no investments recommended in the water treatment works. 1.3 Booster Pump Stations 1.3.1 Existing System The current system in Norton is entirely gravity fed. This makes for easy operation but supply pressures have been declining with increased demands and as more demand areas have been added to the system. 1.3.2 Proposed Investment Measures Modelling of the Norton supply system has shown it is possible to keep the current set up of gravity only supply. Therefore no booster pump stations are recommended. 1.4 Transmission System Figure 1-1 below shows the transmission system for Norton, in schematic form: Gauff Ingenieure 1-1 Greater Harare Water and Sanitation Investment Plan Appendix 4.4 Norton Figure 1-1 Norton Transmission and Storage Schematic - Existing DN300 WARD 2 4700m NORTON TANKS 10ML MORTON DN600 JAFFRAY 2600m NORTON HARARE WARDS WARDS 1, 12, 13 & 6 DN250 3, 5, 7, 8, 300m 9, 10 & 11 DN160 WARD 4 2500m 1.4.1 Existing Transmission System Description The sole treated water supply to the whole of Norton is a single DN600 AC pipeline from the Norton Tanks to a distribution centre at the Council Engineering Offices in Ward 3. A major concern with this line once it enters the town boundary it has no servitude and has been overbuilt in areas. A tee off approximately half way along the line feeds Ward 2 which is a newly developed low density suburb. At ward 3 the DN600 splits into the various parts of the distribution system for Wards 1 and 3 and with onward transmission to Wards5, 6, 7, 8, 9,10 and 11. These wards together make up the whole of the original town of Norton for which the water supply system was designed. New expansion areas in Wards 12,13 and 6 have been attached to the distribution system for the old town and receive almost no water. Modelling confirms that the network simply does not have capacity to supply these areas. Similarly Ward 4 is supplied through the distribution system of ward 3 and then via a 2.5km DN160 main which is entirely too small to supply the area. Thus under the existing condition areas of the old town which used to have adequate supply now suffer from low pressures and short supply hours but do receive water, New development areas receive little or no water at very low pressures. As a result many people, especially in the new development areas now rely on shallow wells for their water supplies. Gauff Ingenieure 1-2 Greater Harare Water and Sanitation Investment Plan Appendix 4.4 Norton 1.4.2 Investment Measures Figure 1-2 below shows the proposed future transmission system for Ruwa, in schematic form: Figure 1-2 Norton Transmission and Storage Schematic - Proposed NORTON TANKS 10ML WARD 2 DN300 (DN450) MORTON 4700m DN600 JAFFRAY DN400 2600m 2975m NORTON HARARE WARDS WARDS 1, 12, 13 & 6 3, 5, 7, 8, 9, 10 & 11 DN600 CHEGUTU DN600 8000m EXPANSION 8000m DN160 AREA WARD 4 2500m Short Term Investment Measures In the short term the minimal intervention necessary is to supply sufficient water to the town for its populations minimal requirements and to reverse the trend of chronic low pressure in the network. The 8MLD that can be supplied by the existing line cannot sustain Norton so this supply must be expanded. At the same time regardless of available supplies pressures will be very low unless certain minimum interventions are carried out. The following short term measures are therefore proposed. Junction numbers in the table refer to Figure 7-12. Table 1-1 Short Term Primary and Secondary Distribution Investments Note Description of Investment Required Reason for Investment Refers Pipeline Transmission/ Primary and Secondary Distribution a Morton Jaffray to 3800m DN500 DI Increase supply capacity to Norton to Norton Tanks. meet the town’s long term needs b Termination of DN600 2975m of DN400 DI Provide sufficient supply to Wards 6, in Ward 3 to Ward 6 12 and 13 and improve pressures throughout. c Line J-98_3 to 98_5 2995m of DN200 New secondary pipe network for Ward Gauff Ingenieure 1-3 Greater Harare Water and Sanitation Investment Plan Appendix 4.4 Norton Note Description of Investment Required Reason for Investment Refers Pipeline uPVC 6 where development has commenced d Main connection 1365m of DN300 Improve supplies to Wards 12 and 13 between ward 6 and uPVC and allow these to be disconnected ward 13 from current connection to ward 10. This will improve pressures in all areas. e Connect existing 453m of DN150 Improve pressures in ward 4 DN225 in Ward 12 to temporarily. Ward 4 will still require Ward 4. Pipeline J98_1 flow limiters until the long term to J99_4 investment measures are in place but will receive improved flow. In the ultimate configuration this line would be valved off. f Norton Tanks to Ward 8000m of DN600 DI New line to provide proper rate of 4 supply to ward 4 and to provide the supply to allow for expansion of the network into the Chegutu expansion area. This line is considered essential to improve supplies to western Norton Long Term Investment Measures The focus of the long term investment measures will be to supply adequate water to meet normal demands are reasonable network pressures in all areas of Norton and to supply the increasing demand of the areas of new development in Wards 2, 4 12, 13 and the Chegutu expansion area: Table 1-2 Long Term Primary and Secondary Distribution Investments Note Description of Investment Reason for Investment Refers Pipeline Required Primary Distribution a Norton Tanks to 5150m of DN600 The new line feeds Wards 13 and 6 Norton Town Center DI releasing the old line to its design duty (Ward 3) of feeding wards 1, 2, 3, 4, 5, 7, 8, 9, 10 and 11. Once this line is in place demand management flow limiters may be removed in all Wards. Gauff Ingenieure 1-4 Greater Harare Water and Sanitation Investment Plan Appendix 4.4 Norton Note Description of Investment Reason for Investment Refers Pipeline Required Secondary Distribution c Extension of existing 1665m of DN200 Allows the completion of the expansion DN200 on boundary of uPVC of these wards wards 12 and 13 d New Link between 1390m of DN200 Allows for higher flow rates and J98_2 in ward 13 and pressures to ward 12 as it expands to J98_1 in Ward 12 full potential size. e New supply line into 850m of DN350DI With the installation of the DN600 there Ward 4 from the new will be sufficient supply for ward 4 but DN600 in (b) above. the existing pipework in ward 4 is J99_3 to J99_2 insufficient to distribute it. f New line through ward 2600m of All secondary pipework in Ward 4 is 4 J99_2 to J99_4 DN250uPVC currently undersized. g New supply line to the 3925m of New development area requires main Chegutu expansion DN450DI water supply area from Ward 4. J99_2 to J99_4 h New secondary supply 5760m of DN315 Secondary distribution to new expansion line in Chegutu area extension. J97_4 to J97_3 i Extension of the above 2285m of DN250 Secondary distribution to new expansion line, J97_3 to J97_2 area 1.5 Storage Reservoirs 1.5.1 Existing Reservoirs Existing storage reservoirs are located and supplied as shown in Figure 1-1 above. The following reservoirs exist in the town: Table 1-3 Reservoir Storage - Norton ID Location Capacity 1 Norton Tanks 2 x 5000m3 Gauff Ingenieure 1-5 Greater Harare Water and Sanitation Investment Plan Appendix 4.4 Norton Norton Tanks GIZ Installed Flow Meter into Norton Tanks 1.5.2 Proposed Investment Measures Short Term Investment Measures In the short term the existing 10ML of reservoir capacity will have to suffice as demand management methods are still in place. The storage time will drop well below the recommended 24 hours during this period. Long Term Investment Measures In the long term it will be necessary to build reservoir volume to get back to the required 24hours of storage. This will require the construction of an additional 26ML of storage at the same reservoir site. Table 1-4 Proposed Reservoir Storage - Norton ID Location Capacity 3 1 Norton Tanks 2 x 13,000m 1.6 Distribution Network 1.6.1 Distribution zones and DMAs The following Zones are logically identified from the network layout. Currently poor valves etc. mean that many of the zones are heavily interconnected and do not constitute demand management areas. Gauff Ingenieure 1-6 Greater Harare Water and Sanitation Investment Plan Appendix 4.4 Norton Table 1-5: Demand Management Areas DMA Source of Supply Comment Existing Town Areas Ward 1 Off-takes from existing DN600 - Ward 2 Off take half way along existing DN600 Ward 3 Off-takes from existing DN600 Ward 4 Via 2500m long DN160 from Supply line is totally insufficient Ward 3 for demand Ward 5 DN375 form Ward 3 Low pressures in ward Ward 6 Supplied out of Ward 5 network Investments plant to provide separate supply for Ward 6 Ward 7 DN225 from Ward 8 Low pressures in ward Ward 8 DN300 from Ward 7 Low pressures in ward Ward 9 DN225 from ward 8 Low pressures in ward Ward 10 DN225 from Ward 9 Low pressures in ward Ward 11 DN225 from Ward 9 Low pressures in ward Ward 12 DN250 from Ward 10 Line and pressures are absolutely insufficient to supply Ward 12 in this way. Ward 12 effectively receives no supply Ward 13 DN225 from Ward 12 Ward 13 effectively receives no supply New Supply Areas This area has not commenced formal Chegutu Expansion DN450 from Ward 4 development. Network expansion into the area will be a long term goal. 1.6.2 NRW assessment Bulk and Block Metering Bulk and block metering is absent for most of the town. Distribution Networks Gauff Ingenieure 1-7 Greater Harare Water and Sanitation Investment Plan Appendix 4.4 Norton The distribution network has certain parts which are known to be problematic and which will require significant rehabilitation. These tend to be the older areas of the town. The Council staff identified: • DN300AC line in Wards 8 and 9 suffers regular burst despite low pressures. • Western part of Ward 5 has GI pipes and very low supply pressures despite bing low lying. Consumer Metering The Council Reports that over 50% of consumer meters are faulty or inoperable. 1.6.3 Proposed Investment measures Short Term Investment Measures – Non Revenue Water The majority of the effort at non revenue water reduction will take place in the short term investment timeframe. Investment measures proposed are: • A programme of valve replacement to allow proper demand zoning and management. This covers all valves within the system. • A programme of installation and or replacement of bulk and bock meters to allow proper accounting for water. This covers all meters within the system • A programme for the replacement of all consumer meters within the system, domestic and commercial. • A programme of technical assistance to assist in identification of losses and developing programmes for NRW reduction. This will include detailed network mapping, customer database cleanup and customer awareness programmes. • Following from improved metering and modelling it will be possible to identify areas of the tertiary distribution system where losses are high and target a programme of pipe and house connection replacement at these areas. At this stage the Council has not identified any specific area as highly problematic. • Level control valves for reservoirs will be replaced as necessary to prevent losses through overflows. The use of flow limiters may be required in areas such as Ward 4 where there will remain insufficient supply in the short term. Short Term Investment Measures – Reticulation Expansion Short term expansion of the tertiary water supply network will be concentrated in the areas of Norton where developers are installing the networks. This investment will generally not require monetary outlay from the Council as the developers foot the bill. Where expansions occur before reinforcement of the primary distribution system there may be limited water to supply these areas and flow limiting devices may have to be fitted to house connections until more water is available. These areas include: • Ward 2 • Ward 6 • Ward 12 Gauff Ingenieure 1-8 Greater Harare Water and Sanitation Investment Plan Appendix 4.4 Norton • Ward 13 • Ward 4 • The Chegutu Expansion Area Long Term Investment Measures – Non Revenue Water The long term measures in NRW reduction will largely involve a continuation of the activities in the short term. Specific investments allowed for are: • Replacement of all bulk and block meters. Experience indicates these have a life not exceeding 8-10 years and those installed in 2015-2017 will therefore need replacement before 2030. • Replacement of all consumer meters. Experience indicates these have a life not exceeding 8-10 years and those installed in 2015-2017 will therefore need replacement before 2030. Long Term Investment Measures – Reticulation Expansion Long term expansion of the tertiary water supply network will be in areas earmarked for growth of Ruwa beyond its current boundaries. This investment will generally not require monetary outlay from the Council as the developers foot the bill. Control of development permits should be exercised to ensure that the Council is not committed to supplying water into these areas before it has adequately provisioned existing areas. The long term expansion areas include: • Ward 6 • Ward 12 • Ward 13 • The Chegutu Expansion Area 1.7 Emergency Water Supplies With the considerable water shortages that Ruwa has been experiencing the Council has an ongoing programme to supply water through strategically located water points and boreholes as follows: - 21 boreholes with hand pumps Gauff Ingenieure 1-9 Greater Harare Water and Sanitation Investment Plan Appendix 4.4 Norton Well maintained private shallow well. Note the proximity of the shallow well (foreground) to Council borehole with Handpump the pit latrine (background) The Council arranges for the department of health to test the boreholes. Short Term Investment Measures Maintenance of the existing emergency facilities. Long Term Investment Measures Normalisation of supplies should allow for the decommissioning of the emergency facilities. Gauff Ingenieure 1-10 Greater Harare Water and Sanitation Investment Plan Appendix 4.4 Norton 2 SEWERAGE 2.1 Sewage Sub Catchments Originally there was just one main sewerage catchment in Norton with two small sub- catchments supplied by small sewage pump stations. All wastewater was conveyed to the Town’s wastewater treatment works on a single location near lake Manyame. Recent expansion in the town to the west has led to development outside of this sewage catchment and consideration must now be given to strategically planning the future sewerage catchments of the town. Figure 2-1 Norton Existing Sewerage Catchments Schematic L. MANYAME NORTON WWTW WARD 6 &13 WARDS 1, 3, 4, 5, 6, 7, 8, 9, TANGATARA SPS 10, 11 MARRIDALE WARD 12 SPS WATERSHED GRAVITY MAIN HUNYANY P&P TREE PLANTATION PUMP & FORCE MAIN The schematic above shows the intended function of the Norton sewerage system. The main current concerns are that the Maridale SPS is not equipped with pumps and that Ward 6 and 13 have a sewerage system which is blanked off and has neither ponds nor pump station to discharge to. A system is required which collects from all areas that are currently sewered and that the Council intends to provide with sewerage services in future. The proposed system of sewerage catchments for Norton is shown in the figure below. Gauff Ingenieure 2-11 Greater Harare Water and Sanitation Investment Plan Appendix 4.4 Norton Figure 2-2 Norton Proposed Sewerage Catchments Schematic L. MANYAME WARD 6 ANAEROBIC NORTON WWTW PONDS WARD 6 &13 WARDS 1, 3, 4, 5, 6, 7, 8, 9, TANGATARA SPS 10, 11 WARD 12 NARIRA SPS NORTON NEW TREE CHEGUTU PLANTATION WATERSHED EXPANSION FACULTATIVE AREA PONDS WITH PUMP GRAVITY MAIN STATION PUMP & FORCE MAIN In the revised system those wards which originally fed into the Norton WWTW will continue to do so. Newly developing areas in Ward 12, 13 and 6 will drain by gravity to a WWTW in Ward 6 using anaerobic primary treatment only. Land is available in Ward 6 for this. As there is a shortage of space in Ward 6 which prevents the location of facultative ponds there, these will be placed at a location where they can serve the Chegutu expansion by gravity. The effluent from all of the existing WWTW and the facultative ponds will be pumped to a new irrigation area, located outside of the Manyame Catchment, on land west of the Chegutu district expansion area. This report has not recommended the refurbishment of the existing force main and irrigation system for the existing WWTW because these facilities are not controlled by the Norton Council. However a detailed feasibility study may revisit this decision and consider this refurbishment if proper control of the system by Norton can be guaranteed. The system is more complex than in other towns but has the following advantages over other systems considered: • No sewage will be able to drain into Lake Manyame without at least receiving primary treatment, even if sewage pump stations fail. • BNR Treatment and its associated high energy costs and maintenance burden is avoided. • Screened and settled sewage is pumped which is lower maintenance than raw sewage pumping Gauff Ingenieure 2-12 Greater Harare Water and Sanitation Investment Plan Appendix 4.4 Norton • Norton will own the irrigation area and not be reliant on other parties to manage it. 2.2 Sewer Reticulation System Norton’s sewer system varies in age but is generally considered to be in reasonable condition with no areas reported as causing significant maintenance problems. However general rehabilitation works will be expected on the system including targeted line replacements and manhole rehabilitation and cover programmes. 2.3 Transmission Sewers The current sewage transmission system meets current hydraulic requirements and according to the Council is reliable and does not present an undue maintenance burden. The system has been modelled assuming normalized water supplies to meet demands and in areas of existing development is adequate. In Figure 2-2 above the proposed sewerage catchment development is presented. If this is followed then all existing sewers have the capacity needed for the long term duty. For Norton, it is not planned that any expansion to the existing sewerage reticulation system will be carried out in the short term (See Section 2.6 Sewerage Boundary). Therefore there are no proposed short term measures to expand the main sewage transmission. Long Term Investment Measures In the long term Norton’s water shortages should be resolved an it is intended to remove flow limiting devices as significantly increased supply volumes become available with the construction of the two new DN600 supply lines into Norton as described above. At this stage it will be necessary to greatly expand the sewerage systems in Wards 6, 12 and in the new Chegutu Expansion area. The following lines are proposed. Manhole numbers given refer to Figure 7-13: Table 2-1 Long Term Transmission Sewer Investments ID Model Nodes Investment Required Reason for Investment Existing Mains Upgrades/Augmentation 1 MH03 to MH04 390m of DN450 Steel on Original pipe was replaced with new AC. Existing Pipe Bridge The new line is starting to show signs of similar failure (longitudinal cracking). It will need to be replaced and steel is preferred. New Mains 1 MH49-MH50- 1650m of DN230 Western expansion of sewerage boundary MH51 in ward 6 2 MH51-MH52- 1440m of DN315 Western expansion of sewerage boundary MH48 (new in ward 6 Ward 6 WWTW) Gauff Ingenieure 2-13 Greater Harare Water and Sanitation Investment Plan Appendix 4.4 Norton ID Model Nodes Investment Required Reason for Investment 3 MH053-MH54- 2420m of DN200 Western expansion of sewerage boundary MH55-MH47 in ward 6 4 MH24-MH45- 2700m of DN315 Western expansion of sewerage boundary MH46-MH47 in ward 6 5 MH47-MH48 525m of DN350 Western expansion of sewerage boundary (new Ward 6 in ward 6, 12 and 13 WWTW) 6 MH59-MH61- 1810m of DN200 Chegutu District Expansion Area MH60 7 MH56-MH45- 2709m of DN200 Chegutu District Expansion Area MH57-MH58 8 MH58-MH60 1200 of DN315 Chegutu District Expansion Area 9 MH60-MH62 1200 of DN315 Chegutu District Expansion Area outfall (new facultative line to treatment works ponds) 2.4 Sewage Pump Stations 2.4.1 Existing Sewage Pump Station Condition There are three sewage pump stations in Norton as follows: Tangatara SPS Tangatara SPS handles flows from a few houses in the Twin Lakes Area of Norton. Peak flows are <10l/s. The station pumps into a 785m long AC force main 150mm diameter. The SPS is not enclosed in a fenced area and its pump is considered by the Council to be unreliable as it is a temporary unit which is also used for many other duties. The 1AC force main suffers regular bursts and should be replaced. There are no standby power facilities and the station overflows at times of power failure. Details of the pumping equipment in the station was not available. Gauff Ingenieure 2-14 Greater Harare Water and Sanitation Investment Plan Appendix 4.4 Norton Tangatara Sewage Pumping Station Sewage Overflow from Burst Force Main Narira SPS Narira SPS handles flows from a few houses in the Narira Area of Norton. Peak flows are <10l/s. The station pumps into a 500m long AC force main 150mm diameter. The SPS is enclosed in a fenced area and its pump and force main are reliable. There are no standby power facilities and the station overflows at times of power failure. Large informal ponds have been dug to capture these overflows. Details of the pumping equipment in the station was not available. Narira Sewage Pumping Station Maridale SPS The Maridale SPS was built by a private developer to handles flows from the development in Ward 12. Modelled flows are 35l/second. It is however intended that this station will be abandoned in the long term and will therefore only continue to operate in the short term. Currently that station does not function because it has no pumps installed. No problems are reported with the Force Main which discharges to a manhole in Ward 9 from where sewage gravitates to the Norton WWTW. The SPS is not enclosed in a fenced area and there are no standby power facilities. As there is almost no water supplied to this area overflows of sewage are minimal but as soon as water returns these will be serious. Gauff Ingenieure 2-15 Greater Harare Water and Sanitation Investment Plan Appendix 4.4 Norton Maridale Sewage Pumping Station 2.4.2 Proposed Investment Measures Short Term Investment Measures The short term investment measures are as follows: Tangatara SPS • Enclose the site with a fence • Clean up the damage from spills • Replace 785m of DN150 AC force main with DN150 HDPE with ‘electrofusion’ joints • Replace the existing pump with one duty/ one standby pump suited to the actual duty of the station and permanently installed. All electrical equipment should be replaced at the same time. • Provide a standby generator Gauff Ingenieure 2-16 Greater Harare Water and Sanitation Investment Plan Appendix 4.4 Norton Table 2-2 Pump Station Data – Tangatara SPS New Pumps Characteristic Unit Value Pumps to MH037a No. of Pumps No. 2 (Duty/ Standby) Pumps Make and Model Sewage Submersible Flygt or similar Coupling Submersible Station Elevation m 1360 Discharge Elevation m 1367 Nominal Static Head m 7 Rising Main Length m 785 Rising Main Nominal Diameter mm 160 Rising main material HDPE PN10 Narira SPS • Provide a standby generator Table 2-3 Pump Station Data – Maridale SPS New Pumps Characteristic Unit Value Pumps to MH032 No. of Pumps No. 2 (Duty/ Standby) Pumps Make and Model Sewage Submersible Flygt or similar Coupling Submersible Station Elevation m 1373 Discharge Elevation m 1375 Nominal Static Head m 2 Rising Main Length m 970 Rising Main Nominal Diameter mm 225 Rising main material AC Long Term Investment Measures In the long term there will be no Sewage Pump Stations in Ruwa. 2.5 Sewage Treatment 2.5.1 Existing Sewage Treatment Facilities Norton has two sewage treatment plants at the same location known as the ‘Old Works’ and the ‘New Works’. Norton Old Works Gauff Ingenieure 2-17 Greater Harare Water and Sanitation Investment Plan Appendix 4.4 Norton The Norton Old Works consists of a traditional treatment process with the following components: • Intake works with coarse and fine bar screens, grit screening and flow measuring and flow diversion facilities. • 2 No. Primary sewage clarifiers with bridge mounted scrapers • 2No. Biological trickling filters • 2No. Humus tanks • Holding ponds for treated wastewater awaiting pumping to disposal • Disposal to a forest plantation owned by Hunyani Pulp and Paper but currently leased out. • Drying beds for clarifier sludge. In addition to the above, non treatment components include: • A pump station with the following functions; o Pumping of clarified wastewater to the filters o Recirculation to the filters o Pumping of sludge to the drying beds • High lift pump station at the ponds serving the new and old works • 7.8km AC main to the forest plantation serving the new and old works Norton New Works The Norton New Works consists of a traditional treatment process with the following components: • Intake works with coarse and fine bar screens, grit screening and flow measuring and flow diversion facilities. • 4 No. Primary sewage clarifiers of the ‘Dortmund’ upflow type, without scrapers. 2 of the four are generally finished but not yet commissioned • 3No. Biological trickling filters. Only one is commissioned and two are partly constructed. • 6No. Humus tanks of the dortmund type. Three are commissioned and three are generally finished but not commissioned. • Sludge drying beds • A partly completed digester. Construction quality on this is poor and the potential to complete it dubious. • Disposal system is the same as for the old works. In addition to the above, non treatment components include: • A pump station with the following functions; o Pumping of primary clarified wastewater to the trickling filter distribution box Gauff Ingenieure 2-18 Greater Harare Water and Sanitation Investment Plan Appendix 4.4 Norton o Pumping of sludge to the drying beds 2.5.2 Existing Works Capacity Calculations of the capacity of the new and old works have been carried out as part of the GIZ exercise which looked at, but eventually did not proceed with, rehabilitation of the works. The following capacities were provided based on actual sewage characteristics at the plant inflow: Old Works Limiting component is the Biological Trickling Filters with 3.2MLD capacity. Clarifier capacity is 6.6MLD. Works nominal capacity is 3.2MLD. New Works Limiting component is the Primary Clarifiers with 2.2MLD capacity in the two existing clarifies which can be economically raised to 4.4MD by commissioning the other two units. Filter capacity of the one complete unit is 4.7MLD. Therefore completion of the other two units is not required. The large filter capacity of this plant arises from design at a time when Norton had significant industry producing high COD wastewater. Combined Works Capacity The combined nominal capacity of the works is around 7.2MLD. Holding Ponds The existing holding ponds have an allowable loading rate of around 300kg BOD per day, equivalent to a flow of 2.4MLD from treated sewage from the works. Thus with any flow above this the pond will be overloaded and will remain anaerobic throughout. 2.5.3 Investment Measures Short Term Investment Measures In the short term it is proposed that the Norton Old and New Sewage Treatment works be fully rehabilitated as these will remain integral to sewage treatment in Norton in the future. The rehabilitation measures shall include: Old Works • Intake o Replace flow measurement devices o Provide grit drying slabs and skip from screenings • 2 No. Primary sewage clarifiers o Mechanical rehabilitation and o replacement of corroded steelwork • 2No. Biological trickling filters o Remove, clean and replace media o Reconstruct collapsed wall Gauff Ingenieure 2-19 Greater Harare Water and Sanitation Investment Plan Appendix 4.4 Norton o Renew distributor arms • 4No. Humus tanks o Mechanical rehabilitation and o replacement of corroded steelwork • Holding ponds for treated wastewater awaiting pumping to disposal o Clear vegetation from embankments o Clear vegetation from pond and dredge sediment o Fill low areas of embankment where overflow occurs • Drying beds for clarifier sludge. o Clean the drying beds o Replace sections of collapsed wall o Replace sludge carts In addition to the above, non treatment components include: • Pumps to the filters: o Replace 1 duty and 1 standby pump o Service all electrical equipment • New pumps as described below Norton New Works The Norton New Works consists of a traditional treatment process with the following components: • Intake works o Replace flow measurement devices o Provide grit drying slabs and skip from screenings • 4 No. Primary sewage clarifiers of the ‘Dortmund’ upflow type, without scrapers. 2 of the four are generally finished but not yet commissioned o Complete commissioning of 2 clarifiers • 3No. Biological trickling filters. Only one is commissioned and two are partly constructed. o No works • 6No. Humus tanks. Three are commissioned and three are generally finished but not commissioned. o No Works • Sludge drying beds o Replace sludge carts Gauff Ingenieure 2-20 Greater Harare Water and Sanitation Investment Plan Appendix 4.4 Norton • Digester o Construct a sludge digester for the sludge produced by the new and old works • New treated effluent pump station and force main o Install new treated effluent pumps and force main discharging at the proposed new irrigation site with characteristics as follows: Table 2-4 Pump Station Data – New Norton WWTW Effluent Pump Station Characteristic Unit Value Pumps to Irrigation Disposal Site at MH066 No. of Pumps No. 3 (2 Duty/ 1 Standby) Duty Flow (Station) m3/hr 325 Station Elevation m 1352 Discharge Elevation m 1392 Nominal Static Head m 40 Rising Main Length m 11,200 Rising Main Nominal Diameter mm 315 Rising main material HDPE PN10 Wastewater Disposal Area It is proposed to provide Norton with a new wastewater disposal area. This should be outside of the Manyame catchment where there is land available and a promising area has been located at the location of MH 66 on the mapping. This area is within the Chegutu expansion area but outside of the Town’s proposed Sewerage Boundary. At this location it is proposed that Norton shall establish 170Ha of forest plantation onto which its wastewater can be irrigated. The entire 170Ha shall be established as a short term measure as the effluent from the existing WWTW can be disposed of on 170Ha without the need for any storage pond to allow for lower application rates during the rainy season. In the long term the proposed new pond system in Norton will also discharge to this irrigation area but no additional land will be required as the ponds will provide significant rainy season storage. Long Term Investment Measures Norton WWTW Long term investment measures will involve the periodic maintenance of all mechanical equipment at the works. Ward 6 WWTW Gauff Ingenieure 2-21 Greater Harare Water and Sanitation Investment Plan Appendix 4.4 Norton As a long term measure it is proposed to construct an anaerobic pond at ward 6 for the purpose of primary treatment of wastewater arising from Wards 12, 13 and 6. Peak and average inflow to this works are predicted at 9.5 and 3.8MLD respectively. The works to be constructed will consist: • Inlet works with coarse and fine screens and grit screening as well as screening disposal • Anaerobic pond with 2 streams in parallel of 3 days retention time. Each pond should therefore have volume around 6,000m3. • Pump station and force main with characteristics described below: Table 2-5 Pump Station Data – Ward 6 Anaerobic Pond Pump Station Characteristic Unit Value Pumps to Facultative Ponds No. of Pumps No. 3 (2 Duty/ 1 Standby) Duty Flow (Station) m3/hr 400 Station Elevation m 1350 Discharge Elevation m 1368 Nominal Static Head m 18 Rising Main Length m 6600 Rising Main Nominal Diameter mm 315 Rising main material HDPE PN10 Facultative Ponds Near Chegutu Expansion Area As a long term measure it is proposed to construct an facultative ponds at a location where the Chegutu Expansion area can gravitate to the ponds. This location is between the Chegutu Expansion and Ward 12. The ponds shall provide treatment for wastewater from the Chegutu Expansion area and secondary treatment for the wastewater from the Ward 6 Anaerobic Ponds. The works to be constructed will consist: • Inlet works with coarse and fine screens and grit screening as well as screening disposal • Anaerobic pond with 2 streams in parallel of 3 days retention time. Each pond should therefore have volume around 5,000m3 as anaerobic treatment is only required for wastewater from the Chegutu Expansion Area. • Facultative pond for all wastewater (approximately 9MLD). The pond will require retention time of 20 days and approximate volume 180,000m3. Typical dimensions would be 600 x 300m which could be subdivided into two parallel streams. • Pump station and force main with characteristics described below: Gauff Ingenieure 2-22 Greater Harare Water and Sanitation Investment Plan Appendix 4.4 Norton Table 2-6 Pump Station Data – Facultative Pond Pump Station Characteristic Unit Value Pumps to Facultative Ponds No. of Pumps No. 3 (2 Duty/ 1 Standby) Duty Flow (Station) m3/hr 435 (designed for average WWF) Station Elevation m 1368 Discharge Elevation m 1392 Nominal Static Head m 24 Rising Main Length m 6300 Rising Main Nominal Diameter mm 315 Rising main material HDPE PN10 2.6 Sewerage Boundary The concept of a sewerage boundary has been proposed. This forms a boundary outside which the town will not provide waterborne sanitation (potable water will generally be supplied). In the case of Ruwa the following Sewerage Boundaries are proposed: Short Term In the short term the sewage boundary shall be the extent of the existing sewered catchments in all wards except Wards 13 and 6. To bring the small area of these two already developed to within the boundary would require significant investments in new WWTW which cannot be justified. Long Term In the long term the construction of the new Anaerobic ponds in Ward 6 and the Facultative ponds between the Chegutu Expansion Area and Ward 12 will allow for a significant increase in the area within the Sewage Boundary. This will therefore be increased to encompass all areas that are able to gravitate to the existing works, the new Ward 6 Anaerobic Ponds or the Facultative Ponds. Approximately 50% of the proposed Chegutu Expansion Area will fall outside of this sewerage boundary. 2.7 On- Site Sanitation Support Many areas of Norton will remain without waterborne sanitation, even in the long term. Sewage system investments will take many years to implement and some area will remain outside of the sanitation boundary for the town even in the long term. In these areas support must be given for the proper use of on site sewage disposal and treatment systems. Support will include: • In areas of high water table where pit latrines and pour flush latrines are not practical, communities will need support to deploy and manage urine separation composting toilets. This type of toilet offers a good solution in these areas but as they require a more significant structure than pits or pour flush toilets they are often Gauff Ingenieure 2-23 Greater Harare Water and Sanitation Investment Plan Appendix 4.4 Norton unaffordable. In addition users must be trained in their proper use and communities must find a source of ash which has to be added to the composting solids and is not readily available in Harare where people do not cook on wood stoves. • In other areas pour flush toilets are clearly the preference of the householders and are seen to be installed where ever sufficient water is available. These offer a cheap alternative to a full waterborne solution with significant benefits over pit latrines. Pour flush systems should only be encouraged in areas where water supply is piped in. Support to communities wishing to use this type of toilet may include: o Improvements to water supply such that the householders have sufficient water to operate pour flush systems o Training of builders in good practices for construction of pour flush toilets and soakaways. o Provision of subsidised components such as cover slabs and squat pans to improve the affordability of pour flush systems • Only where water supplies are very scarce will pit latrines be favoured by house holders. In future, reliance on pit latrines should therefore be limited to areas where no formal water supply system is in place. Support to communities on pit latrines may include: o Training of builders in good practices for construction of pit latrines. o Provision of subsidised components such as cover slabs, squat pans and ventilation pipes to improve the affordability of quality pit latrine systems o Training of householders in methods of maintaining the toilets and preventing the breeding of insects in the toilets. Gauff Ingenieure 2-24 Greater Harare Water and Sanitation Investment Plan Appendix 4.4 Norton 3 ON-GOING WORKS 3.1 Norton Water supply Project When supply difficulties first arouse with the Morton Jaffray Supply Norton commenced a project to bring Raw Water from Lake Chivero to their own water treatment works, from where it was to be pumped to the tanks. The project included the following components: 1. An intake on Lake Chivero based on the re-use of an existing intake tower. This tower has been identified as problematic because it has a fixed depth intake which cannot be moved to access the layers of best water and it is located within a bay that wind tends to fill will weed from other areas of the lake. 2. A raw water pump station and pipeline 3km long 3. A 20MLD FC Reactor type water treatment plant. 4. A treated water pump station and pipeline 1500m to the Norton tanks Money for the project was provided intermittently and at the time it was suspended the main works were the partial completion of the FC reactor WTW. None of the pump stations or pipework had been completed. A review of the project was carried out by GIZ with a view to a decision on whether it would be prudent to fund the completion of the works. GIZ concluded that the costs would be very high and that the raw water source quality was very low and therefore a risk to success and decided not to finance completion. The current review concurs with the GIZ findings and therefore we have recommended an increase in supplies to Norton from Morton Jaffray WTW as a more efficient investment than the completion of Norton’s independent water supply. Partially Complete FC Reactor Gauff Ingenieure 3-25 Greater Harare Water and Sanitation Investment Plan Appendix 4.4 Norton 3.2 GIZ Financing GIZ are funding some Non Revenue Water activities in Norton including a current programme of valve replacement and bulk and block metering. Gauff Ingenieure 3-26 Greater Harare Water and Sanitation Strategic Plan Investment Plan Report Greater Harare Water and Sanitation Investment Plan APPENDIX 4.5: WATER AND SEWERAGE INFRASTRUCTURE ASSESSMENT REPORT - RUWA Gauff Ingenieure Greater Harare Water and Sanitation Investment Plan Appendix 4.5 Ruwa GREATER HARARE WATER AND SANITATION INVESTMENT PLAN APPENDIX 5.4: WATER AND SEWERAGE INFRASTRUCTURE ASSESSMENT REPORT RUWA Table of Contents 1 WATER SUPPLY.............................................................................................................................. 1-1 1.1 W ATER SOURCES ........................................................................................................................ 1-1 1.1.1 Description of water sources .............................................................................................. 1-1 1.1.2 Yield assessment ............................................................................................................... 1-1 1.1.3 Raw Water Pump Stations and Intakes .............................................................................. 1-2 1.1.4 Raw Water Transmission Mains ......................................................................................... 1-4 1.1.5 Raw Water Investment Measures....................................................................................... 1-4 1.2 RUWA WTW ............................................................................................................................... 1-4 1.2.1 Works Description .............................................................................................................. 1-4 1.2.2 WTW Condition.................................................................................................................. 1-4 1.2.3 WTW Investment Measures ............................................................................................... 1-5 1.3 BOOSTER PUMP STATIONS ........................................................................................................... 1-6 1.3.1 Existing System ................................................................................................................. 1-6 1.3.2 Proposed Investment Measures ......................................................................................... 1-7 1.4 TRANSMISSION SYSTEM ............................................................................................................... 1-8 1.4.1 Existing Transmission System Description ......................................................................... 1-9 1.4.2 Investment Measures ......................................................................................................... 1-9 1.5 STORAGE RESERVOIRS .............................................................................................................. 1-11 1.5.1 Existing Reservoirs .......................................................................................................... 1-11 1.5.2 Proposed Investment Measures ....................................................................................... 1-12 1.6 DISTRIBUTION NETWORK ............................................................................................................ 1-12 1.6.1 Distribution zones and DMAs ........................................................................................... 1-12 1.6.2 NRW assessment ............................................................................................................ 1-14 1.6.3 Proposed Investment measures ....................................................................................... 1-14 1.7 EMERGENCY W ATER SUPPLIES ................................................................................................... 1-16 2 SEWERAGE ................................................................................................................................... 2-17 2.1 SEWAGE SUB CATCHMENTS ....................................................................................................... 2-17 2.2 SEWER RETICULATION SYSTEM ................................................................................................... 2-17 2.3 TRANSMISSION SEWERS ............................................................................................................. 2-17 2.4 SEWAGE PUMP STATIONS........................................................................................................... 2-19 2.4.1 Existing Sewage Pump Station Condition ......................................................................... 2-19 2.4.2 Proposed Investment Measures ....................................................................................... 2-22 2.5 SEWAGE TREATMENT ................................................................................................................. 2-23 2.5.1 Sewage Treatment Facilities ............................................................................................ 2-23 2.5.2 Investment Measures ....................................................................................................... 2-23 2.6 SEWERAGE BOUNDARY .............................................................................................................. 2-23 3 ON-GOING WORKS .................................................................. 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Gauff Ingenieure I Greater Harare Water and Sanitation Investment Plan Appendix 4.5 Ruwa Index of Tables Table 1-1 Pump Station Data – Green Sykes Raw Water PS .................................................................... 1-2 Table 1-2 Pump Station Data – Nora Intake PS......................................................................................... 1-3 Table 1-2 Pump Station Data – Nora Raw Water Booster No. 1 ................................................................ 1-3 Table 1-2 Pump Station Data – Nora Raw Water Booster No. 2 ................................................................ 1-3 Table 1-2 Pump Station Data – Mutare Road Booster PS – Old Pump Room ............................................ 1-6 Table 1-3 Pump Station Data – Mutare Road Booster PS – New Pump Room........................................... 1-7 Table 1-4 Long Booster Station Investment Measures ............................................................................... 1-8 Table 1-5 Short Term Primary and Secondary Distribution Investments................................................... 1-10 Table 1-6 Long Term Primary and Secondary Distribution Investments ................................................... 1-11 Table 1-7 Reservoir Storage - Ruwa ....................................................................................................... 1-11 Table 1-8 Demand Management Areas ................................................................................................... 1-13 Table 2-1 Short Term Transmission Sewer Investments .......................................................................... 2-17 Table 2-1 Short Term Transmission Sewer Investments .......................................................................... 2-19 Table 2-3 Pump Station Data – Ruwa Main SPS ..................................................................................... 2-21 Index of Figures Figure 1-1 Ruwa Water Supplies............................................................................................................... 1-1 Figure 1-5 Ruwa Transmission and Storage Schematic - Existing ............................................................. 1-9 Figure 1-6 Ruwa Transmission and Storage Schematic - Proposed ......................................................... 1-10 Gauff Ingenieure II Greater Harare Water and Sanitation Investment Plan Appendix 4.5 Ruwa 1 WATER SUPPLY 1.1 Water Sources 1.1.1 Description of water sources Ruwa currently obtains water from the following sources: • Nora Dam via DN450 uPVC/ DN515AC supply line which feeds into Green Sykes dam on the outskirts of the town. This has been constructed as part of a 25 year Build Operate Transfer (BOT) scheme. • City of Harare (treated water supply) via: o DN525 supply line from Donny Brook tanks to the ZIMRE estate and onwards into the supply network for Ruwa o DN350 supply line from the Ventersberg tanks which feeds the Mutare Road Ground Tanks via a booster station on the western outskirts of Ruwa. • Green Sykes dam on the outskirts of the town which is connected to the WTW via DN515 AC supply line. Figure 1-1 Ruwa Water Supplies DONNY BROOK RUWA GREEN SYKES DAM VENTERSBERG 450PVC DN300 BOOSTER 2 DN525AC BOOSTER 1 DN525AC INTAKE NORA DAM 1.1.2 Yield assessment The supplies from City of Harare have become increasingly unreliable and are now virtually non- existent. Thus over the past ten years Ruwa has focused on its project to bring the Gauff Ingenieure 1-1 Greater Harare Water and Sanitation Investment Plan Appendix 4.5 Ruwa town’s water needs from Nora dam, some 15.5km southeast of the town. This project has been largely completed in 2014. The ZINWA yield assessment for the ‘Nora Pick up Weir’ gives a 4% yield of around 10,000 ML per annum or 27MLD. Ruwa have installed a raw water system capable of transferring 21ML per day (24 hour pumping). 1.1.3 Raw Water Pump Stations and Intakes Intakes There are two raw water intakes for the town, at Nora Dam and at Green Sykes Dam as shown in the figure above. The characteristics of the stations are given in the tables below; Table 1-1 Pump Station Data – Green Sykes Raw Water PS Characteristic Unit Value No. of Pumps No. 3No. Pump locations 2No. Duty pumps 2No. Installed pumps at time of inspection Pumps Make and Model KSB ETA125/250 Full Size Impellers Motors Make and Model 37kW Coupling Belt drive Station Elevation m 1550 Discharge Elevation m 1582 Nominal Static Head m 32 Rising Main Length m 3850 Rising Main Nominal Diameter mm 525 Rising main material Asbestos Cement Green Sykes Raw Water Pump Station Green Sykes Raw Water Pump and pipework Gauff Ingenieure 1-2 Greater Harare Water and Sanitation Investment Plan Appendix 4.5 Ruwa Table 1-2 Pump Station Data – Nora Intake PS Characteristic Unit Value Pumps to Raw Water Booster No. 1 No. of Pumps No. 3No Pumps Make and Model KSB Omega 200-760A Rated 437m3/hr each Motors Make and Model 250kW 4P Coupling Direct Station Elevation m 1390 Discharge Elevation m 1463 Nominal Static Head m 73 Rising Main Length m 3500 Rising Main Nominal Diameter mm 525 Rising main material Asbestos Cement Table 1-3 Pump Station Data – Nora Raw Water Booster No. 1 Characteristic Unit Value Pumps to Raw Water Booster No. 2 No. of Pumps No. 3No Pumps Make and Model KSB Omega 200-760A Rated 437m3/hr each Motors Make and Model 250kW 4P Coupling Direct Station Elevation m 1463 Discharge Elevation m 1562 Nominal Static Head m 99 Rising Main Length m 600 Rising Main Nominal Diameter mm 525 Rising main material Asbestos Cement Table 1-4 Pump Station Data – Nora Raw Water Booster No. 2 Characteristic Unit Value Pumps to Green Sykes Dam No. of Pumps No. 3No Pumps Make and Model KSB Omega 150-650A Motors Make and Model 185kW 4P Coupling Direct Gauff Ingenieure 1-3 Greater Harare Water and Sanitation Investment Plan Appendix 4.5 Ruwa Station Elevation m 1562 Discharge Elevation m 1605 high point on line at 1900m from pump station 1560 elevation of discharge point Nominal Static Head m -2 Rising Main Length m 9700 Rising Main Nominal Diameter mm 450 Rising main material uPVC 1.1.4 Raw Water Transmission Mains Raw water transmission mains are as indicated in Figure 1-1 and in the tables above. The project for the Raw Water Supply was completed only in 2014 and so these lines are only just commissioned and in good condition. The capacity of the lines is adequate for the ultimate capacity of the raw water source. 1.1.5 Raw Water Investment Measures The raw water system is recently completed and adequately sized and no investment measures are proposed beyond the periodic maintenance of mechanical plant which will not be required until the implementation of long term investment measures. 1.2 Ruwa WTW 1.2.1 Works Description The Ruwa WTW is of the ‘FC Reactor’ type. This is a proprietary design of ‘Hydro Project Zimbabwe’ of Bulawayo. The FC reactor contains two functional units within a single vessel constructed of either steel of concrete. The base of unit functions as an upward flow clari-floculator and above this there is a filter which achieves filtration through a floating bed media composed of hardened kaylite pellets. Filtration is upwards and backwash is downwards, achieved by opening a valve at the base of the unit.. The system operates entirely under gravity and requires no circulation or backwash pumps. The FC reactor plant is used in many locations throughout Zimbabwe and the Ruwa Engineering staff are very happy with the performance of the units installed. There are two FC reactor units on the site: 1. The original 2.5MLD unit fabricated steel steel unit 2. A more recent 5MLD reinforced concrete unit Works was commenced on a 4000m3 clear water reservoir at the site of the WTW but this has not been completed. The FC reactor units therefore drain directly into supply. 1.2.2 WTW Condition The works is generally in good condition although the following issues were identified: 1. Corrosion of the 2.5ML steel FC reactor vessel. Gauff Ingenieure 1-4 Greater Harare Water and Sanitation Investment Plan Appendix 4.5 Ruwa 2. Chemical dosing arrangement is not functional and requires overhaul. Filter beds are losing hardened kaylite media which finds its way into supply and clogs supply meters. 3. Sludge drying bed construction is incomplete 4. Treated water reservoir is incomplete. Ruwa WTW: FC Reactor Units 2.5MLD (left) and Ruwa WTW: Broken Down Chemical Dosing 5MLD (right) 1.2.3 WTW Investment Measures Short Term Investment Measures 1. Expand the capacity of the Works to 20MLD with the construction of a new 12.5MLD FC Reactor unit. 2. Strip down and apply internal and external corrosion protection to the steel 2.5MLD FC reactor unit. 3. General servicing/ rehabilitation of both FC reactor units is required, including: a. Attend to seals which are allowing filter media to escape into supply b. Install strainers on discharge pipework to catch any filter media that does escape the reactor. c. Service all valves d. Improve safety and handrailing on walkways and ladders 4. Replace the existing chemical mixing and dosing facilities. As this is the only, very small power requirement of the plant, it is recommended that the current system be replaced with a solar powered dosing system. With a solar power source it will be possible to increase the automation of the chemical dosing system. 5. Complete the 4000m3 circular clear water reservoir and all connecting pipework. The works currently operate at low flow rate, discharging directly into supply. The 4000m3 clear water reservoir should be constructed to balance outflows and allow the plant to optimize production. Gauff Ingenieure 1-5 Greater Harare Water and Sanitation Investment Plan Appendix 4.5 Ruwa 6. Complete the construction of the sludge drying beds. The works are currently operating at low rate but when 20MLD of treatment capacity is on site the drying beds will be essential. Long Term Investment Measures No further expansion of the works is expected in the long term as at that time the ‘Kunzvi’ project will be on line. Kunzvi will deliver its treated water to Donny Brook reservoirs which already have a high capacity link to Ruwa. However the works will be maintained at 20MLD capacity even after commissioning of Kunzvi. Long term investment measures will be limited to repair and rehabilitation of mechanical plant, corrosion protection and servicing of the FC reactor units and the dosing equipment. 1.3 Booster Pump Stations 1.3.1 Existing System The system currently contains one booster pump station, split into two parts, located at the Mutare Road reservoir site. Table 1-5 Pump Station Data – Mutare Road Booster PS – Old Pump Room Characteristic Unit Value Pumps to 180m3 Elevated Tanks No. of Pumps No. 3 Pumps Make and Model Cochrane Stork Cen 80-250 Impeller Dia 245mm Motors Make and Model 7.5kW 380V Coupling Direct drive Station Elevation m 1560 Discharge Elevation m 1573 Nominal Static Head m 13m Rising Main Length m 20m Rising Main Nominal Diameter mm 300 Rising main material Steel Gauff Ingenieure 1-6 Greater Harare Water and Sanitation Investment Plan Appendix 4.5 Ruwa Table 1-6 Pump Station Data – Mutare Road Booster PS – New Pump Room Characteristic Unit Value Pumps to 1,000m3 New Damofalls Tanks(but with offtakes to supply) No. of Pumps No. 3 Pumps Make and Model not available Motors Make and Model 50kW Coupling Direct drive Station Elevation m 1560 Discharge Elevation m 1575 Nominal Static Head m 15 Rising Main Length m 1350 Rising Main Nominal Diameter mm 300 Rising main material Steel Mutare Road P/Stn: Existing Pumps to Elevated Mutare Road P/Stn: Works underway to new pumps to Tanks Damofalls 1.3.2 Proposed Investment Measures Modelling of the Ruwa system first investigated the possibility of supplying all areas of the town using gravity supplies and reasonably sized elevated tanks. Unfortunately the rather flat terrain in Ruwa is not conducive to such a system with the design resulting in oversized pipes with very low velocities and uneconomically high elevated tanks. Gauff Ingenieure 1-7 Greater Harare Water and Sanitation Investment Plan Appendix 4.5 Ruwa Therefore as water volumes normalize it will be necessary to introduce booster pumping into the network to maintain network pressures. The following investments in booster pumping will be required: Short Term Investment Measures The additional water supply availability in Ruwa inn the short term will require the construction or reconfiguration of the booster stations as follows: Table 1-7 Long Booster Station Investment Measures Pump Station Location Supplies to Type of Pumping Capacity Ruwa WTW Mutare Road Ground Water Transfer. 230l/s @25m head Reservoir Constant Speed Pumping Wards 9, Damofalls, New Booster pumping. 400l/s @25m head Expansions North and East Variable speed of Ruwa pumping preferred Mutare Road Wards 1 to 7 and new Booster pumping. 455l/s @20m head Reservoirs expansion areas Variable speed southeast, south and pumping preferred southwest of Ruwa Long Term Investment Measures Long term investment measures require only the periodic maintenance of the pumping equipment. 1.4 Transmission System Figure 1-2 below shows the transmission system for Ruwa, in schematic form: Gauff Ingenieure 1-8 Greater Harare Water and Sanitation Investment Plan Appendix 4.5 Ruwa Figure 1-2 Ruwa Transmission and Storage Schematic - Existing DN250 (1) Donny Brook DAMOFALLS WARD9 DN525 3700m ZIMRE DN315 MUTARE Rd (2) Ventersberg (4) DN315 9400m DN200 DN250 2000m Wards 1, 2, 3, 4, 5, (3b) DN250 6 &7 (3a) HARARE RUWA 1.4.1 Existing Transmission System Description Three sources of treated water are available to Ruwa when all things are functioning normally. These are the two City of Harare reservoirs at Ventersberg and Donny Brook and the Ruwa WTW. The City of Harare Supplies are as follows: • The original supply to Ruwa was a DN315 line from Ventersberg through a booster at Sunway City and then Via a DN200 Line to Ruwa’s Mutare Road Tanks. • Later a DN525 was added to supply the ZIMRE area without any intervening storage. • Currently no supply is received from Ventersberg and little from Donny Brook. • There are no reported problems with the pipelines themselves. The supply from Ruwa WTW Operates as Follows: • At the water treatment works there are a number of connections directly into the supply network of the northern part of Ward 9. • A DN315 AC line runs south with offtakes to Ward 9 and Damofalls before reducing to DN250 and terminating at the Mutare Road Ground Tanks • From Mutare Road Ground Tanks a single DN250 goes into supply in the southern area of the town with multiple off-takes. 1.4.2 Investment Measures Gauff Ingenieure 1-9 Greater Harare Water and Sanitation Investment Plan Appendix 4.5 Ruwa Figure 1-3 Ruwa Transmission and Storage Schematic - Proposed (1) DN500 DN250 (c) WARD9 ZIMRE DN315 DAMOFALLS DN525 3700m Mara Farm DN250 (e) MUTARE Rd (2) DN400 (4) (a) DN315 9400m DN200 2000m Wards 1, 2, 3, 4, 5, (3b DN250 6 &7 (3a DN400 (b) Athelney Farm (d) Short Term Investment Measures The Ruwa Transmission system is to be reinforced in the short term to the extent necessary to properly distribute the water that will become available from the expanded WTW. This requires additional capacity on a north south axis through the town allowing higher feed rate from the Ruwa WTW to Mutare Tanks and from Mutare Tanks to the expansion areas in the south of Ruwa in Wards 5 and 7. Table 1-8 Short Term Primary and Secondary Distribution Investments Note Description of Investment Required Reason for Investment Refers Pipeline Transmission/ Primary Distribution a Ruwa WTW to Mutare 4650m DN400 Ductile Increase supply availability in Rd Tanks. Iron Southern areas of Ruwa b Mutare Road Tanks to 3260m DN400 Ductile Augment supply the southern Southern Ruwa Iron expansion areas of Ruwa currently supplied through the distribution 775m DN315 uPVC network for existing areas. Long Term Investment Measures As Ruwa’s water supply situation normalizes it will be necessary to reinforce the primary and secondary distribution system as tabulated below: Gauff Ingenieure 1-10 Greater Harare Water and Sanitation Investment Plan Appendix 4.5 Ruwa Table 1-9 Long Term Primary and Secondary Distribution Investments Note Description of Investment Reason for Investment Refers Pipeline Required Transmission/ Primary Distribution a ZIMRE to WTW Tanks 4250m of DN500 Allow the existing DN525AC to be used Ductile Iron as a main treated water supply line to rather than just as supply to ZIMRE. This will meet Ruwa’s expanding treated water requirements in the long term Secondary Distribution b New line to supply east 3720m of DN200 Expansion of water supply into new of ward 5 and the new PVC residential areas expansion area (2030) of Athelney Farm. c New line to supply the 7900 of DN200 Expansion of water supply into new 2030 expansion area PVC residential areas of Mara Farm east of Ruwa WTW and Damofalls. 1.5 Storage Reservoirs 1.5.1 Existing Reservoirs Existing storage reservoirs are located and supplied as shown in Figure 1-2 above. The following reservoirs exist in the town: Table 1-10 Reservoir Storage - Ruwa ID Location Capacity 1 Ruwa WTW 4000m3 under construction 2 New Damofalls 1000m3 elevated on 10m stand 3a Mutare Road Ground 2000m3 Ground with - 3 x 50kW Pumps to (3b). - 3 x 50kW Pumps to (2) Not connected 3 3b Mutare Road Elev. 180m steel – condition suspect 4 Sunway City +-200m3 The above table covers the storage within the town only. Of great importance to Ruwa but belonging to Harare are the Donny Brook tanks which have a large diameter supply line to Ruwa and to a lesser extent the Ventersberg tanks which have a long DN300 supply line to Ruwa but which should also feed the growing Sunway City development. Little or no water is currently received through these lines. Gauff Ingenieure 1-11 Greater Harare Water and Sanitation Investment Plan Appendix 4.5 Ruwa New ‘Damofalls’ Tank in Ward 9 Mutare Road Elevated and Ground Tanks 1.5.2 Proposed Investment Measures Short Term Investment Measures The completion of the clear water reservoir at Ruwa WTW is the only proposed short term investment in storage. Long Term Investment Measures As Ruwa’s water supply situation normalizes the available storage as proportion of daily supply will likely drop significantly below the recommended 24hour minimum. Therefore as a long term measure it will be necessary to augment storage within Ruwa. The layout of the town is such that the existing WTW is at approximately the highest point but also it is the closest high point in the town which can be easily connected to the Donny Brook Tanks which will supply treated water above and beyond the 17.5MLD that the Ruwa WTW will ultimately be capable of. It is therefore makes sense to construct the town’s main storage at this location. It is proposed therefore, as a long term investment measure, to construct 40,000m3 (100 x 80 x 5m deep) of storage at the location of the Ruwa WTW. The Council should ensure land for this is secured now. 1.6 Distribution Network 1.6.1 Distribution zones and DMAs The following Zones are logically identified from the network layout. Currently poor valves etc. mean that many of the zones are heavily interconnected and do not constitute demand management areas. Gauff Ingenieure 1-12 Greater Harare Water and Sanitation Investment Plan Appendix 4.5 Ruwa Table 1-11 Demand Management Areas DMA Source of Supply Comment Existing Town Areas ZIMRE Area Via DN525 from Harare Interconnected to ward 9 via DN250. Donny Brook Tanks. This should be normally closed Ward 9 Ruwa WTW via numerous Ward 9 should be subdivided into offtakes from DN315 line three DMAs covering; running from Ruwa WTW to - the northern and southern parts Mutare Road Tanks of the ward west of the supply line and, - the Damofalls area east of the supply line. Ward 1 Mutare Road Tanks offtake from Existing DN250 running south from the tanks Ward 2 Mutare Road Tanks offtake from Existing DN250 running south from the tanks Ward 3 Mutare Road Tanks offtake from Existing DN250 running south from the tanks Wards 4 and 6 Mutare Road Tanks offtake from Existing DN250 running south from the tanks Ward 5 Mutare Road Tanks offtake This area is currently expanding from Proposed DN400/315 running south from the tanks Item (b) in Table 1-8 Ward 7 - North Mutare Road Tanks with This is the existing developed area of offtake from existing DN250 Ward 7 running south from the tanks Ward 7 - South Ward 5 Mutare Road Tanks offtake from Proposed DN400/315 running south from the tanks Item (b) in Table 1-8 Expansion Areas (Current and Future) Tarisa Farm Ruwa WTW via existing This is a currently expanding area and will continue to expand Dn250 line running east to eastwards up to 2030 west along the boundary between Tarisa Farm and Ward 9 Gauff Ingenieure 1-13 Greater Harare Water and Sanitation Investment Plan Appendix 4.5 Ruwa Mara Farm Ruwa WTW via new Expansion into Mara Farm area has secondary network, Item (e) commenced but only at small scale. in Table 1-9 Athelney Farm Mutare Road Tanks via new Expansion into Athelney Farm area secondary network, Item (d) has not commenced. in Table 1-9 Ruwa has a complex arrangement of multiple supply sources and multiple reservoirs, some of which boost into supply. To work efficiently this system will require good control and automation of reservoir levels and booster pumping pressures. Variable speed pumping is recommended on all booster pump stations and should be controlled by network pressures with lower pressures set for off peak hours when system frictional losses are lower. A system will be required to monitor the status of all reservoirs and to control the feed pumps from the Ruwa WTW to the tanks 1.6.2 NRW assessment Bulk and Block Metering Bulk and block metering is absent for most of the town. Distribution Networks The Ruwa distribution networks are relatively new as Ruwa is a new settlement. As such major issues with dilapidated pipes and house connections are not generally reported. However there has been a significant water supply deficit for many years which makes it almost impossible to assess the level of leakage in the tertiary distribution system. Consumer Metering The Council Reports that over 50% of consumer meters are faulty or inoperable. 1.6.3 Proposed Investment measures Short Term Investment Measures – Non Revenue Water The majority of the effort at non revenue water reduction will take place in the short term investment timeframe. Investment measures proposed are: • A programme of valve replacement to allow proper demand zoning and management. This covers all valves within the system. • A programme of installation and or replacement of bulk and bock meters to allow proper accounting for water. This covers all meters within the system • A programme for the replacement of all consumer meters within the system, domestic and commercial. Gauff Ingenieure 1-14 Greater Harare Water and Sanitation Investment Plan Appendix 4.5 Ruwa • A programme of technical assistance to assist in identification of losses and developing programmes for NRW reduction. This will include detailed network mapping, customer database cleanup and customer awareness programmes. • Following from improved metering and modelling it will be possible to identify areas of the tertiary distribution system where losses are high and target a programme of pipe and house connection replacement at these areas. At this stage the Council has not identified any specific area as highly problematic. • Level control valves for reservoirs will be replaced as necessary to prevent losses through overflows. With the planned expansion of the Ruwa WTW to 20MLD and the deferral of many network expansion measures into the long term interventions plan, it is not anticipated that flow limiters will be needed as a demand management measure. Short Term Investment Measures – Reticulation Expansion Short term expansion of the tertiary water supply network will be concentrated in the areas of Ruwa where developers are installing the networks. This investment will generally not require monetary outlay from the Council as the developers foot the bill. Where expansions occur before reinforcement of the primary distribution system there may be limited water to supply these areas and flow limiting devices may have to be fitted to house connections until more water is available. These areas include: • North-western area of Ward 9 • Sunway City • Southern portion of Ward 7 • Ward 5 • Tarisa Farm Long Term Investment Measures – Non Revenue Water The long term measures in NRW reduction will largely involve a continuation of the activities in the short term. Specific investments allowed for are: • Replacement of all bulk and block meters. Experience indicates these have a life not exceeding 8-10 years and those installed in 2015-2017 will therefore need replacement before 2030. • Replacement of all consumer meters. Experience indicates these have a life not exceeding 8-10 years and those installed in 2015-2017 will therefore need replacement before 2030. Long Term Investment Measures – Reticulation Expansion Long term expansion of the tertiary water supply network will be in areas earmarked for growth of Ruwa beyond its current boundaries. This investment will generally not require monetary outlay from the Council as the developers foot the bill. Control of development permits should be exercised to ensure that the Council is not committed to supplying water into these areas before it has adequately provisioned existing areas. The long term expansion areas include: Gauff Ingenieure 1-15 Greater Harare Water and Sanitation Investment Plan Appendix 4.5 Ruwa • Mara Farm • Athelney • Tarisa Farm 1.7 Emergency Water Supplies With the considerable water shortages that Ruwa has been experiencing the Council has an ongoing programme to supply water through strategically located water points and boreholes as follows: - 5 electrically powered boreholes with typical yields <1 lps. - 5 boreholes with hand pumps Water Point with Electric Borehole Pump The Council tests the boreholes at the time when the WTW is to be closed due to lack of water testing is carried out at the Tobacco Research Board Lab. At the last round of testing: - 10 boreholes were tested, none failed - 7 shallow wells were tested, 5 failed. Short Term Investment Measures Maintenance of the existing emergency facilities. Long Term Investment Measures Normalisation of supplies should allow for the decommissioning of the emergency facilities. Gauff Ingenieure 1-16 Greater Harare Water and Sanitation Investment Plan Appendix 4.5 Ruwa 2 SEWERAGE 2.1 Sewage Sub Catchments Ruwa has a single sewage catchment served by the Adleigh Ponds. This is divided into three sub-catchments, each served by a single sewage pump station. Runyaro SPS Sub-catchment This is a small area of Wards 1 and 2 which drains to the Runyaro SPS. This SPS has a short lift into a sewer line in the Ruwa Main SPS sub-catchment at Jun-93. Chiremba SPS Sub-catchment This covers wards 4 and 6 and areas of Ward 5 which drain to the Chiremba SPS. This SPS has a short lift into a sewer line in the Ruwa Main SPS sub catchment at Jun-102. Ruwa Main SPS Sub-catchment This covers the whole of Ruwa, including flows from the two above sub catchments with the balance of flow arriving all the way by gravity to the Ruwa Main SPS. Wards 5&7 Sub Catchment The new developments in Wards 5 and 7, south of the Chiremba SPS cannot feed any of the existing sub catchments by gravity. It would appear that the developer intends to install a sewage pump station at the southernmost extent of this area (Jun-31 in mapping) and pump up to a manhole within the Ruwa Main SPS sub-catchment. This pump station has not yet been installed. 2.2 Sewer Reticulation System Ruwa is a relatively new town and as such there are no significant problems reported with the sewer network. However, in the last decade water supplies have been short and flows therefore low and it is expected that a return to normal supply levels may show up areas where the existing system has deteriorated. 2.3 Transmission Sewers The main sewer network for Ruwa has been modelled using the expected flows at the 2030 time horizon to identify sewer lines which may need to be augmented or upgraded to accommodate the expansion of the town. It should be noted that all of the current network appears adequate for normal flows with the current population. The modelling has identified the following investments required within Ruwa. Node numbering refers to Figure 7-16: Short Term Investment Measures Table 2-1 Short Term Transmission Sewer Investments ID Model Nodes Investment Required Reason for Investment Existing Mains Upgrades/ Augmentation 1 J116 to J73 Replace 175m of DN300 with Allow for flows arising from northerly DN450 RC expansion of Ruwa into Tarisa Farm 2 J73-J65-J59 Replace 650m of DN300 with Allow for flows arising from northerly DN525 RC expansion of Ruwa into Tarisa Farm Gauff Ingenieure 2-17 Greater Harare Water and Sanitation Investment Plan Appendix 4.5 Ruwa ID Model Nodes Investment Required Reason for Investment 3 J59-J57 Replace 215m of DN525 215 Crossing of Mutare Road will with DN675 RC accommodate Ruwa’s northerly and easterly expansions New Mains A J58-J228 3165m of DN750 RC New sewer line from the location of the existing Ruwa Main SPS to the lowest point in Ruwa. This line will also provide gravity sewer of the expansion areas of Ward 7 and Sunway City. B J87 (Relnyaro 1228m of DN315 uPVC Links the existing SPS to the gravity SPS) to J29 sewage system C J106 (existing 50m of DN250 uPVC Links the existing SPS to the gravity Chilemba SPS) sewage system to J33 D J31 to J32 435m of DN250 uPVC Link the low points east and west of Ward 5. J32 to J228 3210m of DN400 uPVC Link the lowest point in ward 4 to the lowest point in ward 7. This line completes the new gravity network required in Ruwa to allow for the decommissioning of all SPS. Long Term Investment Measures The short term measures described above will remove Ruwa’s reliance on sewage pumping and add capacity in certain critical sections which will become overloaded because of existing development. Long term measures are required to accommodate increased flows from new development areas. Gauff Ingenieure 2-18 Greater Harare Water and Sanitation Investment Plan Appendix 4.5 Ruwa Table 2-2 Short Term Transmission Sewer Investments ID Model Nodes Investment Required Reason for Investment Existing Mains Upgrades/ Augmentation 1 J84 - J86 - J83 1640 of DN225 uPVC laid Additional flows arising from parallel to existing DN225 expansion into Mara Farm 2 J57-J58 1780m of DN525 RC laid Additional flows arising from parallel to existing DN525 expansion into Mara Farm 3 New Mains A J304 -J302-J84 2250m of DN200 uPVC Expansion into Mara Farm B J306-J305—J84 2250 of DN200 uPVC Expansion into Mara Farm C J302-J301-J300- 3075m of DN200 uPVC Expansion into Athalney Farm area J44 D J228 to J229 4550m of DN825 Main outfall from Ruwa to the exitsing but as yet not commissioned main sewer line between Donny Brook and Lyndhurst Farm. 2.4 Sewage Pump Stations 2.4.1 Existing Sewage Pump Station Condition There are three sewage pump stations in Ruwa as follows: Runyaro SPS Runyaro SPS (Jun-87 in modelling). Peak modelled inflows were 18l/s and pumping head is not clear but <15m for the short lift to Jun-93 in the Ruwa Main SPS sub catchment. The SPS has is enclosed within a fenced area and has an inlet works with coarse and fine bar screen and grit screening upstream of the pumps. pumping equipment consists of one submersible pump in a wet well. The station is prone to overflows as a result of power failures but is mechanically reliable. Spills are into the Ruwa stream and thence into the Manyame No standby power is available at the station. Gauff Ingenieure 2-19 Greater Harare Water and Sanitation Investment Plan Appendix 4.5 Ruwa Relnyaro SPS: Intake works and sewage spills Relnyaro SPS: Wet well and superstructure Chilemba SPS Chiremba SPS (Jun-106 in modelling). Peak modelled inflows were 6l/s and pumping head is not clear but are estimated around 40m for the lift to Jun-103 in the Ruwa Main SPS sub catchment. The SPS is enclosed within a fenced area and has an inlet works with coarse and fine bar screen and grit screening upstream of the pumps. Pumping equipment normally consists of two submersible pumps but has been replaced by a single end suction pump after failure of the submersibles. The station is prone to overflows as a result of power failures but is mechanically reliable. Spills are into the Ruwa stream and thence into the Manyame. The station has a relatively new standby generator. Chilemba SPS: Intake works Chilemba SPS: Temporary Pumping Arrangement Gauff Ingenieure 2-20 Greater Harare Water and Sanitation Investment Plan Appendix 4.5 Ruwa Ruwa Main SPS All sewage from Ruwa ends up at the main sewage pumps station. From here it should be pumped around 1250m to the Adleigh ponds located between Ruwa and Epworth. The SPS is enclosed within a walled area and has an inlet works with coarse and fine bar screen and grit screening upstream of the pumps. There are three inlet works consisting of coarse and fine screens and grit screening. Two feed into old wet wells and are not used whilst the one feeding the current pump station is in good condition and is in use. The pumping equipment in that station is as follows: Table 2-3 Pump Station Data – Ruwa Main SPS Characteristic Unit Value Pumps to Adleigh Ponds No. of Pumps No. 3 Pumps Make and Model Gorman Rupp T8A3-B /FM Std Impeller Motors Make and Model 55kW Coupling Belt drive Station Elevation m 1500 Discharge Elevation m 1515 Nominal Static Head m 15 Rising Main Length m 1250 Rising Main Nominal Diameter mm 250 Rising main material AC Ruwa Main SPS: Gorman Rupp Sewage Pumps Ruwa Main SPS: Inlet works left and center to old wet wells and right to new station The station is currently inoperable with one pump failed, two motors failed and one panel failed. With no pumps running, all of Ruwa’s sewage discharges untreated into the Manyame catchment. Gauff Ingenieure 2-21 Greater Harare Water and Sanitation Investment Plan Appendix 4.5 Ruwa Ruwa Stream Downstream of Ruwa Main SPS 2.4.2 Proposed Investment Measures Short Term Investment Measures The pollution to the Ruwa and Manyame streams from Ruwa’s discharge of untreated sewage is considerable and occurs just a few km upstream of the Prince Edwards Water Treatment Works supplying Chitungwiza. The current system of sewage pump stations has proved unreliable, prone to breakdowns and at risk from loss of power. Consultation with Ruwa Council confirms that they would like to replace the current system with a gravity only system. Ruwa’s Wards 5 and most of Ward 7, where the bulk of the short term development of the town will take place are both at lower elevation to the current Ruwa Main SPS and would require at least one, if not two new sewage pump stations to be serviced. The existing Adelaide ponds are in an area which forms part of Epworth and which has been zoned by Epworth for development. Ruwa has no direct access to the ponds and discharge no effluent to them. It is proposed therefore to link Ruwa by gravity to the existing line that has been constructed but never commissioned from Donny Brook to Lyndhurst Farm. However investment programming means that this connection will not be available until long term measures are implemented. As soon as the investment measures given in Table 2-1 items A to E are completed all of Ruwa will be served by gravity systems and all existing sewage pump stations can be decommissioned. The decommissioning would however retain the bar screening and grit screening facilities at these pump stations. In the short term the system will discharge to new ponds at the southern extreme of Ruwa and the connection to the Donny Brook to Lydhurst farm line will only take place in the longt term Long Term Investment Measures In the long term there will be no Sewage Pump Stations in Ruwa. Gauff Ingenieure 2-22 Greater Harare Water and Sanitation Investment Plan Appendix 4.5 Ruwa 2.5 Sewage Treatment 2.5.1 Sewage Treatment Facilities Ruwa currently uses the Adelaide stabilization ponds which are in an area which forms part of Epworth and which has been zoned by Epworth for development. Ruwa has no direct access to the ponds and discharge no effluent to them. 2.5.2 Investment Measures Short Term Investment Measures With the proposal to re-route all of Ruwa’s sewage by gravity to the existing Donny Brook to Lyndhurst farm sewer line these ponds will be decommissioned. Decommissioning will include for removal of all sludge and reclamation of the pond area to a condition suitable for redevelopment. However the outfall to the new sewer will not be available in the short trem so the town will need an interim sewage treatment arrangement. It is therefore proposed to construct new Ponds for the predicted 18MLD wastewater generated by the town in the 2020 horizon at the southern extreme of Ruwa. These ponds will require a 250Ha irrigation disposal system to dispose of wastewater. Long Term Investment Measures In the long term the 18MLD ponds will be decommissioned and Ruwa will be linked to the Harare South Trunk Sewer, releasing the land used for treatment and irrigation for redevelopment. 2.6 Sewerage Boundary The concept of a sewerage boundary has been proposed. This forms a boundary outside which the town will not provide waterborne sanitation (potable water will generally be supplied). In the case of Ruwa the following Sewerage Boundaries are proposed: Short and Long Term The boundary shall contain all areas of the current wards forming Ruwa plus: • Tarisa Farm. The limit of the sewer boundary on Tarisa Farm shall be the watershed of the Manyame catchment which cuts through the Farm. Areas to the north of this watershed shall be outside of the boundary. • Mara Farm. The limit of the sewer boundary on Mara Farm shall be the watershed of the Manyame catchment which cuts through the Farm. Areas to the north of this watershed shall be outside of the boundary. • Athelney Farm. 2.7 On- Site Sanitation Support Many areas of Epworth will remain without waterborne sanitation, even in the long term. Sewage system investments will take many years to implement and some area will remain outside of the sanitation boundary for the town even in the long term. In these areas support must be given for the proper use of on site sewage disposal and treatment systems. Support will include: Gauff Ingenieure 2-23 Greater Harare Water and Sanitation Investment Plan Appendix 4.5 Ruwa • In areas of high water table where pit latrines and pour flush latrines are not practical, communities will need support to deploy and manage urine separation composting toilets. This type of toilet offers a good solution in these areas but as they require a more significant structure than pits or pour flush toilets they are often unaffordable. In addition users must be trained in their proper use and communities must find a source of ash which has to be added to the composting solids and is not readily available in Harare where people do not cook on wood stoves. • In other areas pour flush toilets are clearly the preference of the householders and are seen to be installed where ever sufficient water is available. These offer a cheap alternative to a full waterborne solution with significant benefits over pit latrines. Pour flush systems should only be encouraged in areas where water supply is piped in. Support to communities wishing to use this type of toilet may include: o Improvements to water supply such that the householders have sufficient water to operate pour flush systems o Training of builders in good practices for construction of pour flush toilets and soakaways. o Provision of subsidised components such as cover slabs and squat pans to improve the affordability of pour flush systems • Only where water supplies are very scarce will pit latrines be favoured by house holders. In future, reliance on pit latrines should therefore be limited to areas where no formal water supply system is in place. Support to communities on pit latrines may include: o Training of builders in good practices for construction of pit latrines. o Provision of subsidised components such as cover slabs, squat pans and ventilation pipes to improve the affordability of quality pit latrine systems o Training of householders in methods of maintaining the toilets and preventing the breeding of insects in the toilets. Gauff Ingenieure 2-24 Greater Harare Water and Sanitation Strategic Plan Investment Plan Report Greater Harare Water and Sanitation Investment Plan APPENDIX 5: WATER DEMAND AND WASTEWATER FLOW PROJECTIONS Gauff Ingenieure Greater Harare Water and Sanitation Investment Plan 1 of 3 GREATER HARARE Appendix 5-1A: Proportion of Population in Housing Categories S/N City/Town Area Present 2020 2030 % in consumer category Population in consumer category % in consumer category Population in consumer category % in consumer category Population in consumer category LD MD HD (a) HD (b) LD MD HD (a) HD (b) Total LD MD HD (a) HD (b) LD MD HD (a) HD (b) Total LD MD HD (a) HD (b) LD MD HD (a) HD (b) Total [ha] [%] [%] [%] [%] [No] [No] [No] [No] [No] [%] [%] [%] [%] [No] [No] [No] [No] [No] [%] [%] [%] [No] [No] [No] [No] 1 *Harare 84,922 28% 3% 59% 9% 482,961 50,409 1,014,130 161,038 1,708,538 26% 3% 57% 14% 512,319 56,924 1,126,709 266,956 1,962,908 22% 3% 55% 20% 685,797 76,200 1,688,585 597,405 3,047,987 2 Chitungwiza 5,106 1% 2% 92% 5% 4,489 5,600 330,017 16,734 356,840 1% 2% 92% 5% 4,858 6,061 356,296 18,984 386,199 1% 2% 94% 4% 6,523 8,142 485,125 18,984 518,774 3 Epworth 3,509 9% 25% 6% 60% 14,880 42,100 9,612 100,870 167,462 10% 21% 7% 63% 20,480 42,100 13,612 127,844 204,036 8% 17% 32% 43% 20,480 42,100 79,896 106,243 248,719 4 Norton 6,005 24% 0% 76% 0% 16,112 - 51,479 - 67,591 24% 0% 76% 0% 22,552 - 72,054 - 94,606 24% 0% 76% 0% 35,019 - 111,884 - 146,903 5 Ruwa 4,007 12% 28% 60% 0% 6,733 15,935 33,665 - 56,333 12% 28% 60% 0% 13,468 31,874 67,339 - 112,682 12% 28% 60% 0% 20,913 49,494 104,564 - 174,971 Grand-total 103,549 525,175 114,044 1,438,903 278,642 2,356,764 573,677 136,959 1,636,010 413,784 2,760,430 768,732 175,936 2,470,054 722,632 4,137,355 Category 2012 2020 2030 Pop Prop (%) Pop Prop (%) Pop Prop (%) LD = Low Density LD 525,175 22% 573,677 21% 768,732 19% MD = Medium Density MD 114,044 5% 136,959 5% 175,936 4% HD (a) = High Density with in-house plumbing HD (a) 1,438,903 61% 1,636,010 59% 2,470,054 60% HD (b) = High Density unplanned without in-house plumbing HD (b) 278,642 12% 413,784 15% 722,632 17% Total 2,356,764 100% 2,760,431 100% 4,137,354 100% Gauff Ingenieure GmbH 09/06/2014 Greater Harare Water and Sanitation Investment Plan 2 of 3 GREATER HARARE Appendix 5-1B: Water Demand forecast S/N City/Town Area Present 2020 2030 Consumption Ave. Dem Peak Season Consumption Ave. Dem Peak Season Consumption Ave. Dem Peak Season Service Domestic Non-domestic Total (incl. NRW) Demand Service Domestic Non-domestic (incl. NRW) Demand Service Domestic Non-domestic Total (incl. NRW) Demand Coverage LD MD HD (a) HD (b) sub-Total Inst. Com. Ind. Sub-total Coverage LD MD HD (a) HD (b) sub-total Inst. Com. Ind. sub-total Total Coverage LD MD HD (a) HD (b) sub-total Inst. Com. Ind. sub-total 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 3 [ha] [%] [m /day] [m /day] [m /day] [m /day] [m /day] [m /day] [m /day] [m /day] [m /day] [m /day] [m /day] [m /day] [%] [m /day] [m /day] [m /day] [m /day] [m /day] [m /day] [m /day] [m /day] [m /day] [m /day] [m /day] [m /day] [%] [m /day] [m /day] [m /day] [m /day] [m /day] [m /day] [m /day] [m /day] [m /day] [m /day] [m /day] [m /day] 1 *Harare 84,922 109,699 8,253 83,897 82 201,930 30,290 9,130 28,446 67,866 269,796 465,166 581,457 112,808 9,817 89,048 7,355 219,028 32,854 11,087 34,542 78,483 297,511 396,681 495,851.83 127,044 11,300 134,742 23,896 296,982 44,547.36 13,043 40,638 98,228 395,210 494,013 617,516.26 2 Chitungwiza 5,106 1,347 1,120 26,671 507 29,645 4,447 1,681 1,811 7,938 37,583 54,469 68,086 1,215 1,061 28,504 759 31,538 4,731 2,018 2,587 9,336 40,874 54,499 68,123.40 1,305 1,221 38,810 759 42,095 6,314.29 2,581 3,787 12,682 54,777 68,471 85,589.28 3 Epworth 3,509 1,457 5,867 409 974 8,706 1,306 47 - 1,353 10,059 14,371 17,963 5,120 7,368 1,089 5,114 18,690 2,804 128 - 2,932 21,622 28,829 36,036.67 4,096 6,315 6,392 4,250 21,052 3,157.86 139 - 3,296 24,349 30,436 38,044.95 4 Norton 6,005 4,834 - 4,376 - 9,209 1,381 110 2,320 3,811 13,020 20,031 25,039 5,638 - 5,764 - 11,402 1,710 175 3,712 5,598 17,000 22,666 28,333.11 7,004 - 8,951 - 15,955 2,393.18 219 4,640 7,252 23,207 29,008 36,260.47 5 Ruwa 4,007 2,020 3,187 2,702 - 7,909 1,186 340 1,079 2,605 10,514 16,175 20,219 3,099 4,736 5,858 - 13,693 2,054 587 3,965 6,606 20,299 27,066 33,832.36 4,036 4,679 9,888 - 18,603 2,790.43 856 5,751 9,397 28,000 35,000 43,750.28 Grand-total 119,356 18,426 118,054 1,562 257,399 38,610 11,308 33,656 83,574 340,973 570,212 712,765 127,880 22,982 130,263 13,228 294,352 44,153 13,996 44,806 102,954 397,306 529,742 662,177 143,484 23,516 198,782 28,905 394,687 59,203 16,837 54,815 130,856 525,543 656,929 821,161 Peak Season Factor ( 1.25 Specific Consumption Institutional Consumption of domestic Specific Consumption Institutional Consumption of domestic Specific Consumption Institutional Consumption of domestic LD 300 Harare 15% LD 250 Harare 15% LD 200 Harare 15% MD 200 Satellite Towns 15% MD 175 Satellite Towns 15% MD 150 Satellite Towns 15% HD (a) 85 HD (a) 80 HD (a) 80 HD (b) 40 HD (b) 40 HD (b) 40 Physical Leakage in 2012 Physical Leakage in 2020 25.0% Physical Leakage in 2030 20.0% Harare 42% 40% LD = Low Density Chitungwiza 31% MD = Medium Density Epworth 30% HD (a) = High Density with in-house plumbing Norton 35% HD (b) = High Density unplanned without in-house plumbing Ruwa 35% Gauff Ingenieure GmbH 09/06/2014 Greater Harare Water and Sanitation Investment Plan 3 of 3 GREATER HARARE Appendix 5-1C: Wastewater Flow Estimates S/N City/Town Category Present 2020 2030 Wastewater flow Wastewater flow Wastewater flow LD MD HD Inst Com. Ind Total LD MD HD Inst Com. Ind. Total LD MD HD Inst Com. Ind. Total [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] 1 *Harare 38,014 6,624 89,131 22,842 6,262 19,481 182,354 34,660 6,313 94,493 23,108 9,040 23,656 191,270 34,435 6,407 130,965 30,470 12,361 27,830 242,468 2 Chitungwiza 842 980 28,338 4,447 1,681 1,584 37,872 759 928 30,285 4,731 2,018 2,263 40,985 815 1,069 41,236 6,314 2,581 3,313 55,328 3 Epworth - - - - - - - - - - - - - - 730 3,850 2,031 1,256 68 - 7,934 4 Norton 413 - 2,309 425 81 577 3,805 509 - 6,125 987 130 993 8,743 815 - 9,510 1,538 162 1,241 13,266 5 Ruwa 1,178 2,789 2,871 1,166 334 883 9,221 1,937 4,144 6,224 2,054 587 3,469 18,416 2,523 4,094 10,506 2,790 856 5,032 25,801 Total 40,447 10,393 122,648 28,880 8,358 22,525 233,251 37,865 11,385 137,126 30,880 11,776 30,382 259,413 39,317 15,420 194,247 42,369 16,027 37,417 344,798 Gauff Ingenieure GmbH 09/06/2014 Greater Harare Water and Sanitation Investment Plan 1 of 3 Harare Appendix 5-2A: Proportion of Population in Housing Categories Ward No. Ward Name Category Area Present 2020 2030 % in consumer category Population in consumer category % in consumer category Population in consumer category % in consumer category Population in consumer category LD MD HD (a) HD (b) LD MD HD (a) HD (b) Total LD MD HD (a) HD (b) LD MD HD (a) HD (b) Total LD MD HD (a) HD (b) LD MD HD (a) HD (b) Total [ha] [%] [%] [%] [%] [No] [No] [No] [No] [No] [%] [%] [%] [%] [No] [No] [No] [No] [No] [%] [%] [%] [No] [No] [No] [No] 1 Harare South (Rural) 19,385 5% 0% 5% 90% 5,680 5,680 102,239 113,599 3% 0% 3% 94% 5,680 5,680 166,157 177,517 1% 0% 48% 51% 5,680 360,801 387,841 754,322 2 Cranborne Park, Queensdale, Braeside, Arcadia, Hillside, Eastlea 2,261 100% 0% 0% 0% 37,024 37,024 100% 0% 0% 0% 38,144 38,144 100% 0% 0% 0% 42,624 42,624 3 Mbare 104 0% 0% 100% 0% 22,397 22,397 0% 0% 100% 0% 22,397 22,397 0% 0% 100% 0% 22,397 22,397 4 Rufaro, Remembrance Drive 115 0% 0% 100% 0% 15,027 15,027 0% 0% 100% 0% 15,027 15,027 0% 0% 100% 0% 15,027 15,027 5 Ridgeview, Lincoln Green, Belvedere North & South, Milton Park, Nonavale 2,012 100% 0% 0% 0% 21,981 21,981 100% 0% 0% 0% 21,981 21,981 100% 0% 0% 0% 21,981 21,981 6 CBD, Avenues 814 100% 0% 0% 0% 21,257 21,257 100% 0% 0% 0% 21,257 21,257 100% 0% 0% 0% 21,257 21,257 7 Kensington, Avondale, Alexander Park, Gunhill, Strathaven, Avondale West 1,762 100% 0% 0% 0% 29,372 29,372 100% 0% 0% 0% 29,372 29,372 100% 0% 0% 0% 29,372 29,372 8 Newlands, Highlands, Lewisam, Chisipite, Rietfontein, Colney Valley, Rolf Valley, The Grange 2,732 100% 0% 0% 0% 20,785 20,785 100% 0% 0% 0% 20,785 20,785 100% 0% 0% 0% 20,785 20,785 9 Greendale, Msasa , Bingley, Athlone, Mandara, Chikurubi, Wormshill, Greengrove, Lichendale 8,777 100% 0% 0% 0% 48,026 48,026 100% 0% 0% 0% 52,926 52,926 100% 0% 0% 0% 72,526 72,526 10 Sunningdale, Graniteside 548 0% 25% 75% 0% 5,511 16,531 22,042 0% 25% 75% 0% 5,511 16,531 22,042 0% 25% 75% 0% 5,511 16,531 22,042 11 Workington, Southerton, Mbare 772 0% 0% 100% 0% 20,835 20,835 0% 0% 100% 0% 20,835 20,835 0% 0% 100% 0% 20,835 20,835 12 Mbare 172 0% 0% 100% 0% 22,324 22,324 0% 0% 100% 0% 22,324 22,324 0% 0% 100% 0% 22,324 22,324 13 Aspindale, Lochinvar, Southerton 1,202 0% 0% 100% 0% 23,123 23,123 0% 0% 100% 0% 24,123 24,123 0% 0% 100% 0% 24,123 24,123 14 Kambuzuma 593 0% 10% 90% 0% 3,052 27,465 30,517 0% 10% 90% 0% 3,052 27,465 30,517 0% 10% 90% 0% 3,052 27,465 30,517 15 Warren Park, Warren Park D, Westlea 1,934 0% 5% 95% 0% 3,309 62,873 66,182 0% 5% 95% 0% 3,309 64,873 68,182 0% 5% 95% 0% 3,309 64,873 68,182 16 Tynwald, Nkwisi Park, Sanganayi Park, Ashdown Park, ST Andrews' Park, Haig Park, Sherwood Pa 2,768 75% 25% 0% 0% 34,948 11,650 46,598 75% 25% 0% 0% 37,048 12,525 49,573 75% 25% 0% 0% 45,448 15,150 60,598 17 Little Norfolk, Mount Pleasant, Groombridge, Borodale West, Northwood, Vainona 3,327 100% 0% 0% 0% 26,412 26,412 100% 0% 0% 0% 26,972 26,972 100% 0% 0% 0% 29,212 29,212 18 Borrodale, Colray, Greystone Park, Helensvale, Quinnington, Chiltern Hills, Borrodale Brook, Philad 7,750 100% 0% 0% 0% 32,789 32,789 100% 0% 0% 0% 34,889 34,889 100% 0% 0% 0% 43,289 43,289 19 Mabvuku 122 0% 0% 100% 0% 21,138 21,138 0% 0% 100% 0% 21,138 21,138 0% 0% 100% 0% 21,138 21,138 20 Tafara 681 0% 0% 100% 0% 24,145 24,145 0% 0% 100% 0% 29,145 29,145 0% 0% 100% 0% 34,145 34,145 21 Mabvuku 2,096 0% 0% 100% 0% 23,036 23,036 5% 0% 95% 0% 1,400 28,036 29,436 17% 0% 83% 0% 7,000 33,036 40,036 22 Logan Park, Hatfield, Park Meadowland, Chadcombe, Msasa Park 2,655 90% 10% 0% 0% 40,151 4,461 44,612 88% 12% 0% 0% 40,151 5,511 45,662 82% 18% 0% 0% 40,151 8,661 48,812 23 Grobie Park, Induna, Waterfalls, Midlands, Malvern, Park Town, Prospect, Ardbennie, Houghton Pa 3,030 100% 0% 0% 0% 63,955 63,955 100% 0% 0% 0% 63,955 63,955 100% 0% 0% 0% 63,955 63,955 24 Highfield, Paradise, Ardbennie 462 0% 0% 100% 0% 29,488 29,488 0% 0% 100% 0% 33,088 33,088 0% 0% 100% 0% 33,088 33,088 25 Highfield 305 0% 20% 80% 0% 5,972 23,886 29,858 0% 20% 80% 0% 5,972 23,886 29,858 0% 20% 80% 0% 5,972 23,886 29,858 26 Willowvale, Highfield 712 0% 0% 100% 0% 36,275 36,275 0% 0% 100% 0% 36,275 36,275 0% 0% 100% 0% 36,275 36,275 27 Glen Norah C 394 0% 0% 100% 0% 32,409 32,409 0% 0% 100% 0% 32,409 32,409 0% 0% 100% 0% 32,409 32,409 28 Glen View 7, Glen Norah 274 0% 0% 100% 0% 27,419 27,419 0% 0% 100% 0% 27,419 27,419 0% 0% 100% 0% 27,419 27,419 29 Glen Norah 106 0% 0% 100% 0% 13,237 13,237 0% 0% 100% 0% 13,237 13,237 0% 0% 100% 0% 13,237 13,237 30 Glen View 410 0% 0% 100% 0% 53,508 53,508 0% 0% 100% 0% 56,308 56,308 0% 0% 100% 0% 56,308 56,308 31 Glen View No. 1, 3 & 9 171 0% 15% 85% 0% 3,446 19,529 22,975 0% 14% 86% 0% 3,446 20,729 24,175 0% 14% 86% 0% 3,446 20,729 24,175 32 Glenview No. 6 320 0% 0% 100% 0% 37,210 37,210 0% 0% 100% 0% 39,210 39,210 0% 0% 100% 0% 39,210 39,210 33 Budiriro 1, 2 & 3 587 0% 0% 100% 0% 60,116 60,116 0% 0% 100% 0% 63,616 63,616 0% 0% 100% 0% 63,616 63,616 34 Mufakose 884 0% 0% 100% 0% 18,532 18,532 0% 0% 100% 0% 18,532 18,532 0% 0% 100% 0% 18,532 18,532 35 Marimba 369 0% 0% 100% 0% 23,937 23,937 0% 0% 100% 0% 23,937 23,937 0% 0% 100% 0% 23,937 23,937 36 New Marimba Park, Mufakose 280 0% 0% 100% 0% 12,993 12,993 0% 0% 100% 0% 12,993 12,993 0% 0% 100% 0% 12,993 12,993 37 Mufakose, Crowborough, Crowborough North, Kuwadzana 1,036 0% 0% 100% 0% 70,754 70,754 0% 0% 100% 0% 90,754 90,754 0% 0% 100% 0% 95,754 95,754 38 Kuwadzana 362 0% 0% 100% 0% 34,466 34,466 0% 0% 100% 0% 34,466 34,466 0% 0% 100% 0% 34,466 34,466 39 Dzivaresekwa 213 0% 0% 100% 0% 24,507 24,507 0% 0% 100% 0% 24,507 24,507 0% 0% 100% 0% 24,507 24,507 40 Glaudina, Dzivaresekwa Extension, Dzivaresekwa 1,882 0% 10% 90% 0% 4,532 40,785 45,317 0% 7% 93% 0% 5,407 68,264 73,671 0% 9% 91% 0% 8,032 80,785 88,817 41 Tynwald North, New Bluff Hill, New Bluff Hill Park, Bluff Hill, Adylinn, Marlborough, New Marlboroug 5,887 100% 0% 0% 0% 55,881 55,881 100% 0% 0% 0% 61,481 61,481 100% 0% 0% 0% 83,881 83,881 42 Hatcliffe 2,300 5% 0% 95% 0% 2,267 43,077 45,344 10% 0% 90% 0% 4,787 43,077 47,864 26% 0% 74% 0% 14,867 43,077 57,944 43 Budiriro 5 1,260 0% 0% 100% 0% 61,120 61,120 0% 0% 100% 0% 78,120 78,120 0% 0% 100% 0% 83,120 83,120 44 Kuwadzana Phase 4 Extension 409 0% 0% 100% 0% 26,926 26,926 0% 0% 100% 0% 36,926 36,926 0% 0% 100% 0% 36,926 36,926 45 Kuwadzana Phase 3, Tynwald South 421 0% 0% 100% 0% 28,900 28,900 0% 1% 99% 0% 350 38,900 39,250 0% 3% 97% 0% 1,400 38,900 40,300 46 Tafara 267 0% 0% 100% 0% 10,482 10,482 0% 0% 100% 0% 12,482 12,482 0% 0% 100% 0% 12,482 12,482 SP 1 Harare Extension - Zwimba 35 5% 20% 0% 75% 2,119 8,476 31,787 42,382 3% 18% 0% 79% 2,119 11,841 52,787 66,747 1% 7% 46% 46% 2,119 21,667 140,988 140,798 305,572 SP 2 Harare Extension - Zwimba 24 100% 0% 0% 0% 8,931 8,931 100% 0% 0% 0% 11,731 11,731 100% 0% 0% 0% 37,765 37,765 SP 3 Harare Extension - Mazowe 20 100% 0% 0% 0% 13,308 13,308 100% 0% 0% 0% 16,108 16,108 100% 0% 0% 0% 42,142 42,142 SP 4 Harare Extension - Goromonzi 6 100% 0% 0% 0% 12,174 12,174 100% 0% 0% 0% 15,632 15,632 100% 0% 0% 0% 41,008 41,008 SP 5 Harare Extension - Goromonzi 7 100% 0% 0% 0% 5,901 5,901 100% 0% 0% 0% 5,901 5,901 100% 0% 0% 0% 20,735 20,735 SP 6 Harare Extension - Goromonzi 25 0% 0% 0% 100% 27,012 27,012 0% 0% 0% 100% 48,012 48,012 0% 0% 33% 67% 33,246 68,766 102,012 Grand-total 84,922 482,961 50,409 1,014,130 161,038 1,708,538 512,319 56,924 1,126,709 266,956 1,962,908 685,797 76,200 1,688,585 597,405 3,047,987 Category 2012 2020 2030 Population Prop (%) Population Prop (%) Population Prop (%) LD = Low Density LD 482,961 28% 512,319 26% 685,797 22% MD = Medium Density MD 50,409 3% 56,924 3% 76,200 3% HD (a) = High Density with in-house plumbing HD 1,014,130 59% 1,126,709 57% 1,688,585 55% HD (b) = High Density unplanned without in-house plumbing Inf. 161,038 9% 266,956 14% 597,405 20% Total 1,708,538 100% 1,962,908 100% 3,047,987 100% Gauff Ingenieure GmbH 09/06/2014 Greater Harare Water and Sanitation Investment Plan 2 of 3 Harare Appendix 5-2B: Water Demand forecast Ward No Ward Name Category Area Present 2020 2030 Consumption Ave. Dem Peak Season Consumption Ave. Dem Peak Season Consumption Ave. Dem Peak Season Service Domestic Non-domestic Total (incl. NRW) Demand Service Domestic Non-domestic (incl. NRW) Demand Service Domestic Non-domestic Total (incl. NRW) Demand Coverage LD MD HD (a) HD (b) sub-Total Inst. Com. Ind. Sub-total Coverage LD MD HD (a) HD (b) sub-total Inst. Com. Ind. sub-total Total Coverage LD MD HD (a) HD (b) sub-total Inst. Com. Ind. sub-total [ha] [%] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [%] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [%] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] 1 Harare South (Rural) 19,385 2% 34.08 - 9.66 81.79 126 19 2,415.00 - 2,434 2,559 4,413 5,515.85 50% 710 - 227 3,323 4,260 639 2,933 - 3,572 7,832 10,443 13,053.15 100% 1,136 - 28,864 15,514 45,514 6,827.06 3,450 - 10,277 55,791 69,738 87,173.09 2 Cranborne Park, Queensdale, Braeside, Arcadia, Hillside, Eastlea 2,261 80% 8,886 - - - 8,886 1,333 96 - 1,429 10,314 17,784 22,229.42 90% 8,582 - - - 8,582 1,287 116 - 1,404 9,986 13,315 16,643.54 90% 7,672 - - - 7,672 1,150.85 137 - 1,288 8,960 11,200 14,000.10 3 Mbare 104 100% - - 1,904 - 1,904 286 11 - 297 2,201 3,794 4,743.04 100% - - 1,792 - 1,792 269 14 - 283 2,074 2,766 3,457.41 100% - - 1,792 - 1,792 268.76 16 - 285 2,077 2,596 3,245.16 4 Rufaro, Remembrance Drive 115 100% - - 1,277 - 1,277 192 45 - 237 1,514 2,611 3,263.49 100% - - 1,202 - 1,202 180 55 - 235 1,438 1,917 2,395.96 100% - - 1,202 - 1,202 180.32 65 - 245 1,447 1,809 2,261.41 5 Ridgeview, Lincoln Green, Belvedere North & South, Milton Park, Nonavale 2,012 90% 5,935 - - - 5,935 890 16 1,341 2,248 8,182 14,108 17,634.50 90% 4,946 - - - 4,946 742 20 1,628 2,390 7,336 9,781 12,226.23 90% 3,957 - - - 3,957 593.49 23 1,916 2,532 6,489 8,111 10,139.18 6 CBD, Avenues 814 100% 6,377 - - - 6,377 957 5,068 955 6,979 13,357 23,029 28,785.63 100% 5,314 - - - 5,314 797 6,154 1,160 8,111 13,425 17,900 22,374.78 100% 4,251 - - - 4,251 637.71 7,240 1,364 9,242 13,493 16,867 21,083.13 7 Kensington, Avondale, Alexander Park, Gunhill, Strathaven, Avondale West 1,762 100% 8,812 - - - 8,812 1,322 101 - 1,423 10,234 17,646 22,057.01 100% 7,343 - - - 7,343 1,101 123 - 1,224 8,567 11,423 14,278.71 100% 5,874 - - - 5,874 881.16 144 - 1,026 6,900 8,625 10,781.26 8 Newlands, Highlands, Lewisam, Chisipite, Rietfontein, Colney Valley, Rolf Valley, The Grange 2,732 80% 4,988 - - - 4,988 748 109 - 857 5,845 10,078 12,597.63 85% 4,417 - - - 4,417 663 132 - 794 5,211 6,948 8,685.42 90% 3,741 - - - 3,741 561.20 155 - 716 4,458 5,572 6,965.15 9 Greendale, Msasa , Bingley, Athlone, Mandara, Chikurubi, Wormshill, Greengrove, Lichendale 8,777 75% 10,806 - - - 10,806 1,621 151 7,560 9,332 20,138 34,720 43,400.24 80% 10,585 - - - 10,585 1,588 183 9,180 10,951 21,536 28,715 35,893.87 90% 13,055 - - - 13,055 1,958.20 216 10,800 12,974 26,029 32,536 40,669.65 10 Sunningdale, Graniteside 548 100% - 1,102 1,405 - 2,507 376 - 3,224 3,600 6,107 10,530 13,162.53 100% - 964 1,322 - 2,287 343 - 3,915 4,258 6,545 8,726 10,907.95 100% - 827 1,322 - 2,149 322.37 - 4,606 4,928 7,077 8,846 11,058.10 11 Workington, Southerton, Mbare 772 100% - - 1,771 - 1,771 266 4 7,334 7,603 9,374 16,162 20,202.89 100% - - 1,667 - 1,667 250 5 8,905 9,160 10,827 14,436 18,044.45 100% - - 1,667 - 1,667 250.02 5 10,477 10,732 12,399 15,499 19,373.43 12 Mbare 172 100% - - 1,898 - 1,898 285 - - 285 2,182 3,762 4,702.95 100% - - 1,786 - 1,786 268 - - 268 2,054 2,738 3,423.01 100% - - 1,786 - 1,786 267.89 - - 268 2,054 2,567 3,209.08 13 Aspindale, Lochinvar, Southerton 1,202 100% - - 1,965 - 1,965 295 36 2,328 2,659 4,625 7,974 9,967.02 100% - - 1,930 - 1,930 289 44 2,827 3,161 5,090 6,787 8,484.00 100% - - 1,930 - 1,930 289.48 52 3,326 3,667 5,597 6,996 8,745.41 14 Kambuzuma 593 100% - 610 2,335 - 2,945 442 58 - 499 3,444 5,939 7,423.20 100% - 534 2,197 - 2,731 410 70 - 480 3,211 4,281 5,351.77 100% - 458 2,197 - 2,655 398.25 82 - 481 3,136 3,920 4,899.50 15 Warren Park, Warren Park D, Westlea 1,934 100% - 662 5,344 - 6,006 901 22 - 923 6,929 11,946 14,932.47 100% - 579 5,190 - 5,769 865 26 - 892 6,661 8,881 11,101.12 100% - 496 5,190 - 5,686 852.93 31 - 884 6,570 8,213 10,265.94 16 Tynwald, Nkwisi Park, Sanganayi Park, Ashdown Park, ST Andrews' Park, Haig Park, Sherwood Park 2,768 100% 10,484 2,330 - - 12,814 1,922 34 - 1,956 14,770 25,466 31,832.60 100% 9,262 2,192 - - 11,454 1,718 41 - 1,759 13,213 17,617 22,021.59 100% 9,090 2,273 - - 11,362 1,704.32 48 - 1,753 13,115 16,393 20,491.64 17 Little Norfolk, Mount Pleasant, Groombridge, Borodale West, Northwood, Vainona 3,327 75% 5,943 - - - 5,943 891 113 - 1,004 6,947 11,978 14,971.96 80% 5,394 - - - 5,394 809 137 - 946 6,341 8,454 10,567.73 80% 4,674 - - - 4,674 701.09 161 - 862 5,536 6,920 8,650.43 18 Borrodale, Colray, Greystone Park, Helensvale, Quinnington, Chiltern Hills, Borrodale Brook, Philadelphia 7,750 75% 7,378 - - - 7,378 1,107 72 - 1,179 8,556 14,752 18,439.82 80% 6,978 - - - 6,978 1,047 87 - 1,134 8,112 10,816 13,519.68 80% 6,926 - - - 6,926 1,038.94 103 - 1,142 8,068 10,085 12,606.13 19 Mabvuku 122 100% - - 1,797 - 1,797 270 11 - 280 2,077 3,581 4,476.49 100% - - 1,691 - 1,691 254 13 - 267 1,958 2,610 3,263.12 100% - - 1,691 - 1,691 253.66 16 - 269 1,960 2,450 3,062.81 20 Tafara 681 100% - - 2,052 - 2,052 308 44 - 352 2,404 4,145 5,181.19 100% - - 2,332 - 2,332 350 53 - 403 2,735 3,646 4,557.74 100% - - 2,732 - 2,732 409.74 63 - 472 3,204 4,005 5,006.33 21 Mabvuku 2,096 100% - - 1,958 - 1,958 294 4 144 442 2,400 4,138 5,172.34 100% 350 - 2,243 - 2,593 389 5 175 569 3,162 4,216 5,269.61 100% 1,400 - 2,643 - 4,043 606.43 6 206 818 4,861 6,076 7,595.35 22 Logan Park, Hatfield, Park Meadowland, Chadcombe, Msasa Park 2,655 85% 10,239 758 - - 10,997 1,650 46 - 1,696 12,693 21,884 27,355.01 85% 8,532 820 - - 9,352 1,403 56 - 1,459 10,811 14,414 18,018.12 90% 7,227 1,169 - - 8,396 1,259.46 66 - 1,326 9,722 12,153 15,190.70 23 Grobie Park, Induna, Waterfalls, Midlands, Malvern, Park Town, Prospect, Ardbennie, Houghton Park 3,030 75% 14,390 - - - 14,390 2,158 98 - 2,256 16,646 28,700 35,874.85 80% 12,791 - - - 12,791 1,919 118 - 2,037 14,828 19,771 24,713.56 90% 11,512 - - - 11,512 1,726.79 139 - 1,866 13,378 16,723 20,903.25 24 Highfield, Paradise, Ardbennie 462 100% - - 2,506 - 2,506 376 19 - 395 2,901 5,002 6,252.65 100% - - 2,647 - 2,647 397 23 - 420 3,067 4,089 5,111.49 100% - - 2,647 - 2,647 397.06 27 - 424 3,071 3,839 4,798.31 25 Highfield 305 100% - 1,194 2,030 - 3,225 484 16 - 500 3,725 6,422 8,027.73 100% - 1,045 1,911 - 2,956 443 20 - 463 3,419 4,559 5,698.92 100% - 896 1,911 - 2,807 421.00 23 - 445 3,251 4,064 5,079.97 26 Willowvale, Highfield 712 100% - - 3,083 - 3,083 463 123 5,561 6,146 9,230 15,913 19,891.74 100% - - 2,902 - 2,902 435 150 6,752 7,337 10,239 13,652 17,065.27 100% - - 2,902 - 2,902 435.30 176 7,944 8,555 11,457 14,321 17,901.78 27 Glen Norah C 394 100% - - 2,755 - 2,755 413 14 - 427 3,182 5,486 6,857.37 100% - - 2,593 - 2,593 389 17 - 406 2,998 3,998 4,997.39 100% - - 2,593 - 2,593 388.91 20 - 409 3,001 3,752 4,689.69 28 Glen View 7, Glen Norah 274 100% - - 2,331 - 2,331 350 13 - 363 2,694 4,644 5,805.20 100% - - 2,194 - 2,194 329 16 - 345 2,539 3,385 4,231.38 100% - - 2,194 - 2,194 329.03 19 - 348 2,542 3,177 3,971.41 29 Glen Norah 106 100% - - 1,125 - 1,125 169 - - 169 1,294 2,231 2,788.61 100% - - 1,059 - 1,059 159 - - 159 1,218 1,624 2,029.67 100% - - 1,059 - 1,059 158.84 - - 159 1,218 1,522 1,902.82 30 Glen View 410 100% - - 4,548 - 4,548 682 51 - 733 5,281 9,106 11,382.08 100% - - 4,505 - 4,505 676 62 - 737 5,242 6,989 8,736.86 100% - - 4,505 - 4,505 675.70 73 - 748 5,253 6,566 8,207.84 31 Glen View No. 1, 3 & 9 171 100% - 689 1,660 - 2,349 352 - - 352 2,702 4,658 5,822.28 100% - 603 1,658 - 2,261 339 - - 339 2,601 3,467 4,334.29 100% - 517 1,658 - 2,175 326.28 - - 326 2,502 3,127 3,908.60 32 Glenview No. 6 320 100% - - 3,163 - 3,163 474 11 - 486 3,649 6,291 7,863.68 100% - - 3,137 - 3,137 471 14 - 484 3,621 4,828 6,035.41 100% - - 3,137 - 3,137 470.52 16 - 487 3,624 4,530 5,662.04 33 Budiriro 1, 2 & 3 587 100% - - 5,110 - 5,110 766 20 - 786 5,896 10,165 12,706.64 100% - - 5,089 - 5,089 763 24 - 787 5,876 7,835 9,794.00 100% - - 5,089 - 5,089 763.39 28 - 791 5,881 7,351 9,188.42 34 Mufakose 884 100% - - 1,575 - 1,575 236 27 - 263 1,839 3,170 3,962.33 100% - - 1,483 - 1,483 222 33 - 255 1,738 2,317 2,896.25 100% - - 1,483 - 1,483 222.38 39 - 261 1,744 2,179 2,724.28 35 Marimba 369 100% - - 2,035 - 2,035 305 - - 305 2,340 4,034 5,042.76 100% - - 1,915 - 1,915 287 - - 287 2,202 2,936 3,670.34 100% - - 1,915 - 1,915 287.24 - - 287 2,202 2,753 3,440.94 36 New Marimba Park, Mufakose 280 100% - - 1,104 - 1,104 166 - - 166 1,270 2,190 2,737.21 100% - - 1,039 - 1,039 156 - - 156 1,195 1,594 1,992.26 100% - - 1,039 - 1,039 155.92 - - 156 1,195 1,494 1,867.74 37 Mufakose, Crowborough, Crowborough North, Kuwadzana 1,036 100% - - 6,014 - 6,014 902 23 - 925 6,939 11,964 14,955.60 100% - - 7,260 - 7,260 1,089 28 - 1,117 8,378 11,170 13,962.56 100% - - 7,660 - 7,660 1,149.05 33 - 1,182 8,843 11,053 13,816.41 38 Kuwadzana 362 100% - - 2,930 - 2,930 439 20 - 459 3,389 5,843 7,303.66 100% - - 2,757 - 2,757 414 24 - 438 3,195 4,260 5,324.95 100% - - 2,757 - 2,757 413.59 28 - 442 3,199 3,999 4,998.79 39 Dzivaresekwa 213 100% - - 2,083 - 2,083 312 - - 312 2,396 4,130 5,162.84 100% - - 1,961 - 1,961 294 - - 294 2,255 3,006 3,757.74 100% - - 1,961 - 1,961 294.08 - - 294 2,255 2,818 3,522.88 40 Glaudina, Dzivaresekwa Extension, Dzivaresekwa 1,882 100% - 906 3,467 - 4,373 656 6 - 662 5,035 8,681 10,851.38 100% - 946 5,461 - 6,407 961 7 - 968 7,376 9,834 12,292.78 100% - 1,205 6,463 - 7,668 1,150.14 8 - 1,159 8,826 11,033 13,790.99 41 Tynwald North, New Bluff Hill, New Bluff Hill Park, Bluff Hill, Adylinn, Marlborough, New Marlborough, Avon 5,887 90% 15,088 - - - 15,088 2,263 97 - 2,360 17,448 30,083 37,604.11 90% 13,833 - - - 13,833 2,075 118 - 2,193 16,026 21,368 26,710.51 90% 15,099 - - - 15,099 2,264.79 139 - 2,404 17,502 21,878 27,347.36 42 Hatcliffe 2,300 50% 340 - 1,831 - 2,171 326 10 - 335 2,506 4,321 5,401.17 75% 898 - 2,585 - 3,482 522 12 - 534 4,016 5,355 6,693.80 90% 2,676 - 3,102 - 5,778 866.64 14 - 880 6,658 8,323 10,403.27 43 Budiriro 5 1,260 100% - - 5,195 - 5,195 779 86 - 865 6,060 10,449 13,060.94 100% - - 6,250 - 6,250 937 104 - 1,042 7,291 9,722 12,152.03 100% - - 6,650 - 6,650 997.44 123 - 1,120 7,770 9,712 12,140.01 44 Kuwadzana Phase 4 Extension 409 100% - - 2,289 - 2,289 343 31 - 374 2,663 4,591 5,739.35 100% - - 2,954 - 2,954 443 38 - 481 3,435 4,580 5,724.81 100% - - 2,954 - 2,954 443.11 44 - 487 3,442 4,302 5,377.40 45 Kuwadzana Phase 3, Tynwald South 421 100% - - 2,457 - 2,457 368 - - 368 2,825 4,871 6,088.31 100% - 61 3,112 - 3,173 476 - - 476 3,649 4,866 6,082.06 100% - 210 3,112 - 3,322 498.30 - - 498 3,820 4,775 5,969.22 46 Tafara 267 100% - - 891 - 891 134 9 - 143 1,034 1,782 2,227.63 100% - - 999 - 999 150 11 - 161 1,159 1,546 1,932.13 100% - - 999 - 999 149.78 13 - 163 1,161 1,452 1,814.39 SP 1 Harare Extension - Zwimba 35 0% - - - - - - - - - 0 - - 100% 530 2,072 - 2,111 4,713 707 - - 707 5,420 7,227 9,034.03 100% 424 3,250 11,279 5,632 20,585 3,087.72 - - 3,088 23,673 29,591 36,988.33 SP 2 Harare Extension - Zwimba 24 0% - - - - - - - - - 0 - - 100% 2,933 - - - 2,933 440 - - 440 3,373 4,497 5,621.10 100% 7,553 - - - 7,553 1,132.95 - - 1,133 8,686 10,857 13,571.80 SP 3 Harare Extension - Mazowe 20 0% - - - - - - - - - 0 - - 100% 4,027 - - - 4,027 604 - - 604 4,631 6,175 7,718.42 100% 8,428 - - - 8,428 1,264.26 - - 1,264 9,693 12,116 15,144.78 SP 4 Harare Extension - Goromonzi 6 0% - - - - - - - - - 0 - - 100% 3,908 - - - 3,908 586 - - 586 4,494 5,992 7,490.33 100% 8,202 - - - 8,202 1,230.24 - - 1,230 9,432 11,790 14,737.25 SP 5 Harare Extension - Goromonzi 7 0% - - - - - - - - - 0 - - 100% 1,475 - - - 1,475 221 - - 221 1,697 2,262 2,827.56 100% 4,147 - - - 4,147 622.05 - - 622 4,769 5,961 7,451.64 SP 6 Harare Extension - Goromonzi 25 0% - - - - - - - - - 0 - - 100% - - - 1,920 1,920 288 - - 288 2,209 2,945 3,680.92 100% - - 2,660 2,751 5,410 811.55 - - 812 6,222 7,777 9,721.67 Grand-total 84,922 109,699 8,253 83,897 82 201,930 30,290 9,130 28,446 67,866 269,796 465,166 581,457 112,808 9,817 89,048 7,355 219,028 32,854 11,087 34,542 78,483 297,511 396,681 495,852 127,044 11,300 134,742 23,896 296,982 44,547 13,043 40,638 98,228 395,210 494,013 617,516 Peak Season Factor (psf) 1.25 Specific Consumption Institutional Consumption 15% of domestic Specific Consumption Institutional Consumption 15% of domestic Specific Consumption Institutional Consumption 15% of domestic LD 300 LD 250 LD 200 MD 200 MD 175 MD 150 HD (a) 85 HD (a) 80 HD (a) 80 HD (b) 40 HD (b) 40 HD (b) 40 Physical Leakage in 2012 42.0% Physical Leakage in 2020 25.0% Physical Leakage in 2030 20.0% LD = Low Density MD = Medium Density HD (a) = High Density with in-house plumbing HD (b) = High Density unplanned without in-house plumbing Gauff Ingenieure GmbH 09/06/2014 Greater Harare Water and Sanitation Investment Plan 3 of 3 Harare Appendix 5-2C: Wastewater Flow Estimates Ward Ward Name Category Present 2020 2030 no. Cov. Wastewater flow Cov. Wastewater flow Cov. Wastewater flow LD MD HD Inst Com. Ind Total LD MD HD Inst Com. Ind. Total LD MD HD Inst Com. Ind. Total [m 3/day] [m 3/day] [m 3/day] [m 3/day] [m 3/day] [m 3/day] [m 3/day] [m 3/day] [m 3/day] [m 3/day] [m 3/day] [m 3/day] [m 3/day] [m 3/day] [m 3/day] [m 3/day] [m 3/day] [m 3/day] [m 3/day] [m 3/day] [m 3/day] 1 Harare South (Rural) 1% 0 - 0 0 24 - 25 50% 222 - 121 320 1,466 - 2,128 100% 710 - 30,668 6,827 3,450 - 41,655 2 Cranborne Park, Queensdale, Braeside, Arcadia, Hillside, Eastlea 100% 5,554 - - 1,333 96 - 6,982 100% 5,364 - - 1,287 116 - 6,768 100% 4,795 - - 1,151 137 - 6,083 3 Mbare 100% - - 2,023 286 11 - 2,320 100% - - 1,904 269 14 - 2,186 100% - - 1,904 269 16 - 2,189 4 Rufaro, Remembrance Drive 100% - - 1,357 192 45 - 1,594 100% - - 1,277 180 55 - 1,513 100% - - 1,277 180 65 - 1,522 5 Ridgeview, Lincoln Green, Belvedere North & South, Milton Park, Nonavale 90% 3,338 - - 801 15 1,056 5,210 90% 2,782 - - 668 18 1,282 4,750 90% 2,226 - - 534 21 1,509 4,289 6 CBD, Avenues 100% 3,986 - - 957 5,068 836 10,846 100% 3,321 - - 797 6,154 1,015 11,287 100% 2,657 - - 638 7,240 1,194 11,728 7 Kensington, Avondale, Alexander Park, Gunhill, Strathaven, Avondale West 100% 5,507 - - 1,322 101 - 6,930 100% 4,589 - - 1,101 123 - 5,814 100% 3,672 - - 881 144 - 4,697 8 Newlands, Highlands, Lewisam, Chisipite, Rietfontein, Colney Valley, Rolf Valley, The Grange 10% 312 - - 75 11 - 397 10% 276 - - 66 13 - 355 10% 234 - - 56 16 - 305 9 Greendale, Msasa , Bingley, Athlone, Mandara, Chikurubi, Wormshill, Greengrove, Lichendale 20% 1,351 - - 324 30 1,323 3,028 20% 1,323 - - 318 37 1,607 3,284 20% 1,632 - - 392 43 1,890 3,957 10 Sunningdale, Graniteside 100% - 964 1,493 376 - 2,821 5,654 100% - 844 1,405 343 - 3,425 6,018 100% - 723 1,405 322 - 4,030 6,481 11 Workington, Southerton, Mbare 100% - - 1,882 266 4 6,417 8,568 100% - - 1,771 250 5 7,792 9,818 100% - - 1,771 250 5 9,167 11,194 12 Mbare 100% - - 2,016 285 - - 2,301 100% - - 1,898 268 - - 2,165 100% - - 1,898 268 - - 2,165 13 Aspindale, Lochinvar, Southerton 100% - - 2,088 295 36 2,037 4,457 100% - - 2,050 289 44 2,474 4,858 100% - - 2,050 289 52 2,910 5,302 14 Kambuzuma 100% - 534 2,480 442 58 - 3,514 100% - 467 2,335 410 70 - 3,282 100% - 401 2,335 398 82 - 3,216 15 Warren Park, Warren Park D, Westlea 100% - 579 5,678 901 22 - 7,180 100% - 507 5,514 865 26 - 6,913 100% - 434 5,514 853 31 - 6,833 16 Tynwald, Nkwisi Park, Sanganayi Park, Ashdown Park, ST Andrews' Park, Haig Park, Sherwood Park MD 100% 6,553 2,039 - 1,922 34 - 10,547 100% 5,789 1,918 - 1,718 41 - 9,466 100% 5,681 1,988 - 1,704 48 - 9,422 17 Little Norfolk, Mount Pleasant, Groombridge, Borodale West, Northwood, Vainona 70% 2,600 - - 624 79 - 3,303 70% 2,360 - - 566 96 - 3,022 70% 2,045 - - 491 113 - 2,648 18 Borrodale, Colray, Greystone Park, Helensvale, Quinnington, Chiltern Hills, Borrodale Brook, Philadelphia 10% 461 - - 111 7 - 579 10% 436 - - 105 9 - 550 10% 433 - - 104 10 - 547 19 Mabvuku 100% - - 1,909 270 11 - 2,189 100% - - 1,797 254 13 - 2,064 100% - - 1,797 254 16 - 2,066 20 Tafara 100% - - 2,181 308 44 - 2,532 100% - - 2,477 350 53 - 2,880 100% - - 2,902 410 63 - 3,375 21 Mabvuku 100% - - 2,080 294 4 126 2,504 100% 219 - 2,383 389 5 153 3,149 100% 875 - 2,808 606 6 180 4,476 22 Logan Park, Hatfield, Park Meadowland, Chadcombe, Msasa Park 10% 640 66 - 165 5 - 876 10% 533 72 - 140 6 - 751 10% 452 102 - 126 7 - 687 23 Grobie Park, Induna, Waterfalls, Midlands, Malvern, Park Town, Prospect, Ardbennie, Houghton Park 10% 899 - - 216 10 - 1,125 10% 799 - - 192 12 - 1,003 10% 719 - - 173 14 - 906 24 Highfield, Paradise, Ardbennie 100% - - 2,663 376 19 - 3,058 100% - - 2,812 397 23 - 3,232 100% - - 2,812 397 27 - 3,236 25 Highfield 100% - 1,045 2,157 484 16 - 3,702 100% - 914 2,030 443 20 - 3,408 100% - 784 2,030 421 23 - 3,259 26 Willowvale, Highfield 100% - - 3,276 463 123 4,866 8,727 100% - - 3,083 435 150 5,908 9,577 100% - - 3,083 435 176 6,951 10,646 27 Glen Norah C 100% - - 2,927 413 14 - 3,354 100% - - 2,755 389 17 - 3,160 100% - - 2,755 389 20 - 3,163 28 Glen View 7, Glen Norah 100% - - 2,476 350 13 - 2,839 100% - - 2,331 329 16 - 2,676 100% - - 2,331 329 19 - 2,679 29 Glen Norah 100% - - 1,195 169 - - 1,364 100% - - 1,125 159 - - 1,284 100% - - 1,125 159 - - 1,284 30 Glen View 100% - - 4,832 682 51 - 5,566 100% - - 4,786 676 62 - 5,524 100% - - 4,786 676 73 - 5,535 31 Glen View No. 1, 3 & 9 100% - 603 1,764 352 - - 2,719 100% - 528 1,762 339 - - 2,629 100% - 452 1,762 326 - - 2,541 32 Glenview No. 6 100% - - 3,361 474 11 - 3,846 100% - - 3,333 471 14 - 3,817 100% - - 3,333 471 16 - 3,820 33 Budiriro 1, 2 & 3 100% - - 5,429 766 20 - 6,215 100% - - 5,407 763 24 - 6,194 100% - - 5,407 763 28 - 6,199 34 Mufakose 100% - - 1,674 236 27 - 1,937 100% - - 1,575 222 33 - 1,830 100% - - 1,575 222 39 - 1,836 35 Marimba 100% - - 2,162 305 - - 2,467 100% - - 2,035 287 - - 2,322 100% - - 2,035 287 - - 2,322 36 New Marimba Park, Mufakose 100% - - 1,173 166 - - 1,339 100% - - 1,104 156 - - 1,260 100% - - 1,104 156 - - 1,260 37 Mufakose, Crowborough, Crowborough North, Kuwadzana 100% - - 6,390 902 23 - 7,315 100% - - 7,714 1,089 28 - 8,831 100% - - 8,139 1,149 33 - 9,321 38 Kuwadzana 100% - - 3,113 439 20 - 3,572 100% - - 2,930 414 24 - 3,367 100% - - 2,930 414 28 - 3,372 39 Dzivaresekwa 100% - - 2,213 312 - - 2,526 100% - - 2,083 294 - - 2,377 100% - - 2,083 294 - - 2,377 40 Glaudina, Dzivaresekwa Extension, Dzivaresekwa 100% - 793 3,683 656 6 - 5,138 100% - 828 5,802 961 7 - 7,599 100% - 1,054 6,867 1,150 8 - 9,080 41 Tynwald North, New Bluff Hill, New Bluff Hill Park, Bluff Hill, Adylinn, Marlborough, New Marlborough, Avonlea, Emerald Hill, Ashb70% 6,601 - - 1,584 68 - 8,253 70% 6,052 - - 1,452 83 - 7,587 70% 6,606 - - 1,585 97 - 8,288 42 Hatcliffe 100% 213 - 1,945 326 10 - 2,493 100% 561 - 2,746 522 12 - 3,841 100% 1,673 - 3,295 867 14 - 5,848 43 Budiriro 5 100% - - 5,520 779 86 - 6,385 100% - - 6,640 937 104 - 7,682 100% - - 7,065 997 123 - 8,185 44 Kuwadzana Phase 4 Extension 100% - - 2,432 343 31 - 2,806 100% - - 3,139 443 38 - 3,620 100% - - 3,139 443 44 - 3,626 45 Kuwadzana Phase 3, Tynwald South 100% - - 2,610 368 - - 2,979 100% - 54 3,307 476 - - 3,836 100% - 184 3,307 498 - - 3,989 46 Tafara 100% - - 947 134 9 - 1,089 100% - - 1,061 150 11 - 1,222 100% - - 1,061 150 13 - 1,224 SP 1 Harare Extension - Zwimba 35 0% - - - - - - - 10% 33 181 - 71 - - 285 10% 26 284 1,198 309 - - 1,818 SP 2 Harare Extension - Zwimba 24 0% - - - - - - - 0% - - - - - - - 0% - - - - - - - SP 3 Harare Extension - Mazowe 20 0% - - - - - - - 0% - - - - - - - 0% - - - - - - - SP 4 Harare Extension - Goromonzi 6 0% - - - - - - - 0% - - - - - - - 0% - - - - - - - SP 5 Harare Extension - Goromonzi 7 0% - - - - - - - 0% - - - - - - - 0% - - - - - - - SP 6 Harare Extension - Goromonzi 25 0% - - - - - - - 30% - - - 86 - - 86 50% - - 1,413 406 - - 1,819 Total 38,014 6,624 89,131 22,842 6,262 19,481 182,354 34,660 6,313 94,493 23,108 9,040 23,656 191,270 34,435 6,407 130,965 30,470 12,361 27,830 242,468 Gauff Ingenieure GmbH 09/06/2014 Water Supply and Sanitation Investment Plan 1 of 3 CHITUNGWIZA Appendix 5-3A: Proportion of Population in Housing Categories Ward No. Ward Name Category Area Present 2020 2030 % in consumer category Population in consumer category % in consumer category Population in consumer category % in consumer category Population in consumer category LD MD HD (a) HD (b) LD MD HD (a) HD (b) Total LD MD HD (a) HD (b) LD MD HD (a) HD (b) Total LD MD HD (a) HD (b) LD MD HD (a) HD (b) Total [ha] [%] [%] [%] [%] [No] [No] [No] [No] [No] [%] [%] [%] [%] [No] [No] [No] [No] [No] [%] [%] [%] [No] [No] [No] [No] 1 St Marys Mixed (HD/LD) 112 10% 0% 90% 0% 826 7,436 8,262 10% 0% 90% 0% 850 7,436 8,286 12% 0% 88% 0% 967 7,436 8,403 2 St Marys Mixed (HD/LD) 112 10% 0% 90% 0% 1,117 10,052 11,169 10% 0% 90% 0% 1,141 10,052 11,193 11% 0% 89% 0% 1,258 10,052 11,310 3 St Marys HD 110 0% 0% 100% 0% 10,057 10,057 0% 0% 100% 0% 10,057 10,057 0% 0% 100% 0% 10,057 10,057 4 St Marys HD 251 0% 0% 100% 0% 27,560 27,560 0% 0% 100% 0% 27,560 27,560 0% 0% 100% 0% 27,560 27,560 5 St Marys HD 56 0% 0% 100% 0% 10,620 10,620 0% 0% 100% 0% 10,620 10,620 0% 0% 100% 0% 10,620 10,620 6 Zengeza 5 HD 903 0% 0% 100% 0% 17,339 17,339 0% 3% 97% 0% 461 17,339 17,800 0% 13% 87% 0% 2,542 17,339 19,881 7 Zengeza 1 HD 28 0% 0% 100% 0% 7,988 7,988 0% 0% 100% 0% 7,988 7,988 0% 0% 100% 0% 7,988 7,988 8 Zengeza 1 HD 60 0% 0% 100% 0% 10,119 10,119 0% 0% 100% 0% 10,119 10,119 0% 0% 100% 0% 10,119 10,119 9 Zengeza 2 HD 87 0% 0% 100% 0% 8,229 8,229 0% 0% 100% 0% 8,229 8,229 0% 0% 100% 0% 8,229 8,229 10 Zengeza 2 HD 163 0% 0% 100% 0% 8,788 8,788 2% 0% 98% 0% 171 9,738 9,909 9% 0% 91% 0% 940 9,738 10,678 11 Zengeza 3 HD 82 0% 0% 100% 0% 9,392 9,392 0% 0% 100% 0% 9,392 9,392 0% 0% 100% 0% 9,392 9,392 12 Zengeza 3 HD 491 0% 0% 100% 0% 15,129 15,129 0% 0% 100% 0% 15,129 15,129 0% 0% 100% 0% 15,129 15,129 13 Zengeza 4 Mixed (HD/LD) 163 5% 0% 95% 0% 474 9,015 9,489 5% 0% 95% 0% 490 9,015 9,505 6% 0% 94% 0% 548 9,015 9,563 14 Zengeza 4 HD 183 0% 0% 100% 0% 15,484 15,484 0% 0% 100% 0% 16,884 16,884 0% 0% 100% 0% 16,884 16,884 15 Seke Unit D HD 231 0% 0% 100% 0% 13,781 13,781 0% 0% 100% 0% 13,781 13,781 0% 0% 100% 0% 13,781 13,781 16 Seke Unit J HD 181 0% 0% 100% 0% 14,730 14,730 0% 0% 100% 0% 14,730 14,730 0% 0% 100% 0% 14,730 14,730 17 Seke Unit K Mixed (HD/LD) 140 5% 0% 95% 0% 762 14,480 15,242 5% 0% 95% 0% 774 14,480 15,254 5% 0% 95% 0% 829 14,480 15,309 18 Seke Unit L Mixed (HD/Inf.) 478 0% 0% 80% 20% 15,774 3,943 19,717 0% 0% 88% 12% 27,801 3,943 31,744 0% 0% 90% 10% 35,974 3,943 39,917 19 Seke Unit F+C HD 156 0% 0% 100% 0% 16,712 16,712 0% 0% 100% 0% 16,712 16,712 0% 0% 100% 0% 16,712 16,712 20 Seke Unit E+H HD 65 0% 0% 100% 0% 11,308 11,308 0% 0% 100% 0% 11,308 11,308 0% 0% 100% 0% 11,308 11,308 21 Seke Unit A+B Mixed (HD/MD) 198 0% 30% 70% 0% 5,600 13,066 18,666 0% 30% 70% 0% 5,600 13,066 18,666 0% 30% 70% 0% 5,600 13,066 18,666 22 Seke Unit O Mixed (HD/Inf.) 129 0% 0% 80% 20% 12,150 3,037 15,187 0% 0% 76% 24% 12,150 3,787 15,937 0% 0% 76% 24% 12,150 3,787 15,937 23 Seke Unit N+P Mixed (HD/Inf.) 231 0% 0% 80% 20% 22,458 5,615 28,073 0% 0% 78% 22% 22,458 6,365 28,823 0% 0% 78% 22% 22,458 6,365 28,823 24 Seke Unit M Mixed (HD/Inf.) 158 0% 0% 80% 20% 16,558 4,139 20,697 0% 0% 77% 23% 16,558 4,889 21,447 0% 0% 77% 23% 16,558 4,889 21,447 25 Seke Unit G Mixed (HD/LD) 340 10% 0% 90% 0% 1,310 11,792 13,102 11% 0% 89% 0% 1,432 11,792 13,224 14% 0% 86% 0% 1,981 11,792 13,773 SP 1 Seke CL HD 0% 0% 100% 0% 11,902 11,902 0% 0% 100% 0% 20,000 20,000 SP 2 Nyatsime Farm HD 0 0% 0% 100% 0% 112,558 112,556 Grand-total 5,106 4,489 5,600 330,017 16,734 356,840 4,858 6,061 356,296 18,984 386,199 6,523 8,142 485,125 18,984 518,772 Category 2012 2020 2030 Population Prop (%) Population Prop (%) Population Prop (%) LD = Low Density LD 4,489 1% 4,858 1% 6,523 1% MD = Medium Density MD 5,600 2% 6,061 2% 8,142 2% HD (a) = High Density with in-house plumbing HD (a) 330,017 92% 356,296 92% 485,125 94% HD (b) = High Density unplanned without in-house plumbing HD (b) 16,734 5% 18,984 5% 18,984 4% Total 356,840 100% 386,199 100% 518,774 100% Gauff Ingenieure GmbH 09/06/2014 Water Supply and Sanitation Investment Plan 2 of 3 CHITUNGWIZA Appendix 5-3B: Water Demand forecast Ward No Ward Name Category Area Present 2020 2030 Consumption Ave. Dem Peak Season Consumption Ave. Dem Peak Season Consumption Ave. Dem Peak Season Service Domestic Non-domestic Total (incl. NRW) Demand Service Domestic Non-domestic (incl. NRW) Demand Service Domestic Non-domestic Total (incl. NRW) Demand Coverage LD MD HD (a) HD (b) sub-Total Inst. Com. Ind. Sub-total Coverage LD MD HD (a) HD (b) sub-total Inst. Com. Ind. sub-total Total Coverage LD MD HD (a) HD (b) sub-total Inst. Com. Ind. sub-total [ha] [%] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [%] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [%] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] 1 St Marys HD, LD 112 100% 248 - 632 - 880 132 - - 132 1,012 1,466 1,833.04 100% 213 - 595 - 807 121 - 121 928 1,238 1,547.48 100% 193 - 595 - 788 118.24 - 118 907 1,133 1,416.44 2 St Marys HD, LD 112 100% 335 - 854 - 1,190 178 - - 178 1,368 1,983 2,478.17 100% 285 - 804 - 1,089 163 - 163 1,253 1,670 2,088.04 100% 252 - 804 - 1,056 158.36 - 158 1,214 1,518 1,897.07 3 St Marys HD 110 100% - - 855 - 855 128 19 - 148 1,002 1,453 1,816.09 100% - - 805 - 805 121 19 140 945 1,260 1,574.43 100% - - 805 - 805 120.68 19 140 945 1,181 1,476.03 4 St Marys HD 251 100% - - 2,343 - 2,343 351 - 351 2,694 3,904 4,880.42 100% - - 2,205 - 2,205 331 - 331 2,536 3,381 4,225.87 100% - - 2,205 - 2,205 330.72 - 331 2,536 3,169 3,961.75 5 St Marys HD 56 100% - - 903 - 903 135 14 149 1,052 1,525 1,905.93 100% - - 850 - 850 127 14 141 991 1,321 1,651.68 100% - - 850 - 850 127.44 14 141 991 1,239 1,548.45 6 Zengeza 5 HD 903 100% - - 1,474 - 1,474 221 - 221 1,695 2,456 3,070.45 100% - 81 1,387 - 1,468 220 - 220 1,688 2,251 2,813.27 100% - 381 1,387 - 1,768 265.26 - 265 2,034 2,542 3,177.63 7 Zengeza 1 HD 28 100% - - 679 - 679 102 - 102 781 1,132 1,414.54 100% - - 639 - 639 96 - 96 735 980 1,224.83 100% - - 639 - 639 95.86 - 96 735 919 1,148.28 8 Zengeza 1 HD 60 100% - - 860 - 860 129 - 129 989 1,434 1,791.91 100% - - 810 - 810 121 - 121 931 1,241 1,551.58 100% - - 810 - 810 121.43 - 121 931 1,164 1,454.61 9 Zengeza 2 HD 87 100% - - 699 - 699 105 30 135 835 1,209 1,511.87 100% - - 658 - 658 99 30 129 787 1,050 1,312.06 100% - - 658 - 658 98.75 30 129 787 984 1,230.05 10 Zengeza 2 HD 163 100% - - 747 - 747 112 50 162 909 1,318 1,647.14 100% 43 - 779 - 822 123 50 173 995 1,327 1,658.75 100% 188 - 779 - 967 145.06 50 195 1,162 1,453 1,816.08 11 Zengeza 3 HD 82 100% - - 798 - 798 120 8 128 926 1,342 1,677.76 100% - - 751 - 751 113 8 121 872 1,163 1,453.53 100% - - 751 - 751 112.70 8 121 872 1,090 1,362.68 12 Zengeza 3 HD 491 100% - - 1,286 - 1,286 193 - 1,811 2,004 3,290 4,768 5,959.45 100% - - 1,210 - 1,210 182 - 2,587 2,768 3,979 5,305 6,631.10 100% - - 1,210 - 1,210 181.55 - 2,587 2,768 3,979 4,973 6,216.66 13 Zengeza 4 HD, LD 163 100% 142 - 766 - 908 136 59 195 1,104 1,600 1,999.87 100% 123 - 721 - 844 127 59 186 1,029 1,373 1,715.73 100% 110 - 721 - 831 124.62 59 184 1,015 1,268 1,585.32 14 Zengeza 4 HD 183 100% - - 1,316 - 1,316 197 415 613 1,929 2,796 3,494.59 100% - - 1,351 - 1,351 203 415 618 1,969 2,625 3,281.30 100% - - 1,351 - 1,351 202.61 415 618 1,969 2,461 3,076.22 15 Seke Unit D HD 231 100% - - 1,171 - 1,171 176 617 793 1,964 2,846 3,557.95 100% - - 1,102 - 1,102 165 617 782 1,885 2,513 3,141.25 100% - - 1,102 - 1,102 165.37 617 782 1,885 2,356 2,944.92 16 Seke Unit J HD 181 100% - - 1,252 - 1,252 188 11 199 1,451 2,103 2,628.21 100% - - 1,178 - 1,178 177 11 188 1,366 1,821 2,276.79 100% - - 1,178 - 1,178 176.76 11 188 1,366 1,708 2,134.49 17 Seke Unit K HD, LD 140 100% 229 - 1,231 - 1,459 219 32 251 1,710 2,478 3,097.79 100% 194 - 1,158 - 1,352 203 32 234 1,586 2,115 2,643.92 100% 166 - 1,158 - 1,324 198.63 32 230 1,554 1,943 2,428.91 18 Seke Unit L HD, Informal 478 40% - - 536 63 599 90 71 161 761 1,102 1,377.86 100% - - 2,224 158 2,382 357 71 429 2,810 3,747 4,683.89 100% - - 2,878 158 3,036 455.35 71 527 3,562 4,453 5,566.01 19 Seke Unit F+C HD 156 100% - - 1,421 - 1,421 213 - 213 1,634 2,368 2,959.42 100% - - 1,337 - 1,337 201 - 201 1,538 2,050 2,562.51 100% - - 1,337 - 1,337 200.54 - 201 1,538 1,922 2,402.35 20 Seke Unit E+H HD 65 100% - - 961 - 961 144 - 144 1,105 1,602 2,002.46 100% - - 905 - 905 136 - 136 1,040 1,387 1,733.89 100% - - 905 - 905 135.70 - 136 1,040 1,300 1,625.53 21 Seke Unit A+B HD, MD 198 100% - 1,120 1,111 - 2,231 335 - 335 2,565 3,718 4,647.10 100% - 980 1,045 - 2,025 304 - 304 2,329 3,105 3,881.79 100% - 840 1,045 - 1,885 282.79 - 283 2,168 2,710 3,387.61 22 Seke Unit O HD, Informal 129 90% - - 929 109 1,039 156 8 164 1,202 1,743 2,178.42 100% - - 972 151 1,123 169 8 176 1,300 1,733 2,166.44 100% - - 972 151 1,123 168.52 8 176 1,300 1,625 2,031.03 23 Seke Unit N+P HD, Informal 231 90% - - 1,718 202 1,920 288 36 325 2,245 3,253 4,066.48 100% - - 1,797 255 2,051 308 36 344 2,395 3,194 3,992.36 100% - - 1,797 255 2,051 307.69 36 344 2,395 2,994 3,742.84 24 Seke Unit M HD, Informal 158 80% - - 1,126 132 1,258 189 - 189 1,447 2,097 2,621.65 100% - - 1,325 196 1,520 228 - 228 1,748 2,331 2,913.72 100% - - 1,325 196 1,520 228.03 - 228 1,748 2,185 2,731.61 25 Seke Unit G HD 340 100% 393 - 1,002 - 1,395 209 309 519 1,914 2,774 3,467.20 100% 358 - 943 - 1,301 195 309 504 1,806 2,408 3,009.73 100% 396 - 943 - 1,340 200.93 309 510 1,850 2,312 2,890.26 SP 1 Seke CL 0% - - - - - - - - 0 - - 100% - - 952 - 952 143 - 143 1,095 1,460 1,824.97 100% - - 1,600 - 1,600 240.00 - - 240 1,840 2,300 2,875.00 SP 2 Nyatsime Farm 0% - - - - - - - 0 - - 100% - - - - - - 338 338 338 450 562.50 100% - - 9,005 - 9,005 1,350.70 900 1,200 3,451 12,455 15,569 19,461.46 Grand-total 1,347 1,120 26,671 507 29,645 4,447 1,681 1,811 7,938 37,583 54,469 68,086 1,215 1,061 28,504 759 31,538 4,731 2,018 2,587 9,336 40,874 54,499 68,123 1,305 1,221 38,810 759 42,095 6,314 2,581 3,787 12,682 54,777 68,471 85,589 Peak Season Factor (psf) 1.25 Specific Consumption Institutional Consumption 15% of domestic Specific Consumption Institutional Consumption 15% of domestic Specific Consumption Institutional Consumption 15% of domestic LD 300 LD 250 LD 200 MD 200 MD 175 MD 150 HD (a) 85 HD (a) 80 HD (a) 80 HD (b) 40 HD (b) 40 HD (b) 40 Physical Leakage in 2012 31.0% Physical Leakage in 2020 25.0% Physical Leakage in 2030 20.0% LD = Low Density MD = Medium Density HD (a) = High Density with in-house plumbing HD (b) = High Density unplanned without in-house plumbing Gauff Ingenieure GmbH 09/06/2014 Water Supply and Sanitation Investment Plan 3 of 3 CHITUNGWIZA Appendix 5-3C: Wastewater Flow Estimates Ward Ward Name Category Present 2020 2030 no. Wastewater flow Wastewater flow Wastewater flow LD MD HD Inst Com. Ind Total LD MD HD Inst Com. Ind. Total LD MD HD Inst Com. Ind. Total [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] 1 St Marys HD, LD 155 - 672 132 - - 958 133 - 632 121 - - 886 121 - 632 118 - - 871 2 St Marys HD, LD 209 - 908 178 - - 1,296 178 - 854 163 - - 1,196 157 - 854 158 - - 1,170 3 St Marys HD - - 908 128 19 - 1,056 - - 855 121 19 - 995 - - 855 121 19 - 995 4 St Marys HD - - 2,489 351 - - 2,840 - - 2,343 331 - - 2,673 - - 2,343 331 - - 2,673 5 St Marys HD - - 959 135 14 - 1,108 - - 903 127 14 - 1,044 - - 903 127 14 - 1,044 6 Zengeza 5 HD - - 1,566 221 - - 1,787 - 71 1,474 220 - - 1,765 - 334 1,474 265 - - 2,073 7 Zengeza 1 HD - - 721 102 - - 823 - - 679 96 - - 775 - - 679 96 - - 775 8 Zengeza 1 HD - - 914 129 - - 1,043 - - 860 121 - - 982 - - 860 121 - - 982 9 Zengeza 2 HD - - 743 105 30 - 878 - - 699 99 30 - 828 - - 699 99 30 - 828 10 Zengeza 2 HD - - 794 112 50 - 956 27 - 828 123 50 - 1,028 118 - 828 145 50 - 1,140 11 Zengeza 3 HD - - 848 120 8 - 976 - - 798 113 8 - 919 - - 798 113 8 - 919 12 Zengeza 3 HD - - 1,366 193 - 1,584 3,144 - - 1,286 182 - 2,263 3,731 - - 1,286 182 - 2,263 3,731 13 Zengeza 4 HD, LD 89 - 814 136 59 - 1,098 77 - 766 127 59 - 1,029 69 - 766 125 59 - 1,019 14 Zengeza 4 HD - - 1,398 197 415 - 2,011 - - 1,435 203 415 - 2,053 - - 1,435 203 415 - 2,053 15 Seke Unit D HD - - 1,245 176 617 - 2,037 - - 1,171 165 617 - 1,954 - - 1,171 165 617 - 1,954 16 Seke Unit J HD - - 1,330 188 11 - 1,529 - - 1,252 177 11 - 1,440 - - 1,252 177 11 - 1,440 17 Seke Unit K HD, LD 143 - 1,308 219 32 - 1,701 121 - 1,231 203 32 - 1,586 104 - 1,231 199 32 - 1,565 18 Seke Unit L HD, Informal - - 570 90 71 - 731 - - 2,363 357 71 - 2,792 - - 3,058 455 71 - 3,584 19 Seke Unit F+C HD - - 1,509 213 - - 1,722 - - 1,421 201 - - 1,621 - - 1,421 201 - - 1,621 20 Seke Unit E+H HD - - 1,021 144 - - 1,165 - - 961 136 - - 1,097 - - 961 136 - - 1,097 21 Seke Unit A+B HD, MD - 980 1,180 335 - - 2,495 - 858 1,111 304 - - 2,272 - 735 1,111 283 - - 2,128 22 Seke Unit O HD, Informal - - 988 156 8 - 1,151 - - 1,033 169 8 - 1,209 - - 1,033 169 8 - 1,209 23 Seke Unit N+P HD, Informal - - 1,825 288 36 - 2,150 - - 1,909 308 36 - 2,253 - - 1,909 308 36 - 2,253 24 Seke Unit M HD, Informal - - 1,196 189 - - 1,385 - - 1,407 228 - - 1,635 - - 1,407 228 - - 1,635 25 Seke Unit G HD 246 - 1,065 209 309 - 1,829 224 - 1,002 195 309 - 1,731 248 - 1,002 201 309 - 1,760 SP 1 Seke CL - - - - - - - - - 1,012 143 - - 1,154 - - 1,700 240 - - 1,940 SP 2 Nyatsime Farm - - - - - - - - - - - 338 - 338 - - 9,567 1,351 900 1,050 12,868 Total 842 980 28,338 4,447 1,681 1,584 37,872 759 928 30,285 4,731 2,018 2,263 40,985 815 1,069 41,236 6,314 2,581 3,313 55,328 Gauff Ingenieure GmbH 09/06/2014 Greater Harare Water and Sanitation Investment Plan 1 of 3 Epworth Appendix 5-4A: Proportion of Population in Housing Categories Ward No. Ward Name Category Area Present 2020 2030 % in consumer category Population in consumer category % in consumer category Population in consumer category % in consumer category Population in consumer category LD MD HD (a) HD (b) LD MD HD (a) HD (b) Total LD MD HD (a) HD (b) LD MD HD (a) HD (b) Total LD MD HD (a) HD (b) LD MD HD (a) HD (b) Total [ha] [%] [%] [%] [%] [No] [No] [No] [No] [No] [%] [%] [%] [%] [No] [No] [No] [No] [No] [%] [%] [%] [No] [No] [No] [No] 1 Muguta LD/Inf 80 25% 0% 0% 75% 7,884 23,653 31,537 23% 0% 0% 77% 7,884 26,153 34,037 23% 0% 38% 38% 7,884 13,077 13,076 34,037 2 Makomo MD/Inf 117 0% 90% 0% 10% 13,447 1,494 14,941 0% 90% 0% 10% 13,447 1,494 14,941 0% 90% 10% 0% 13,447 1,494 14,941 3 Dombo la Mwari MD/(HD/Inf 288 0% 30% 60% 10% 4,806 9,612 1,602 16,020 0% 24% 68% 8% 4,806 13,612 1,602 20,020 0% 24% 76% 0% 4,806 15,214 20,020 4 Chizungu LD/Inf 156 30% 0% 0% 70% 6,996 16,324 23,320 23% 0% 0% 77% 9,796 32,798 42,594 23% 0% 39% 39% 9,796 16,399 16,399 42,594 5 Maseko MD/Inf 215 0% 90% 0% 10% 14,646 1,627 16,273 0% 90% 0% 10% 14,646 1,627 16,273 0% 90% 10% 0% 14,646 1,627 16,273 6 Overspill MD/Inf 485 0% 5% 0% 95% 1,291 24,528 25,819 8% 4% 0% 89% 2,800 1,291 32,528 36,619 8% 4% 44% 44% 2,800 1,291 16,264 16,264 36,619 7 Ward 7 MD/Inf 281 0% 20% 0% 80% 7,910 31,642 39,552 0% 20% 0% 80% 7,910 31,642 39,552 0% 20% 40% 40% 7,910 15,821 15,821 39,552 SP-1 Ext W3/W4 0 0% 0% 0% 100% 44,683 44,683 Grand-total 1,622 14,880 42,100 9,612 100,870 167,462 20,480 42,100 13,612 127,844 204,036 20,480 42,100 79,896 106,243 248,719 Category 2012 2020 2030 Population Prop (%) Population Prop (%) Population Prop (%) LD = Low Density LD 14,880 9% 20,480 10% 20,480 8% MD = Medium Density MD 42,100 25% 42,100 21% 42,100 17% HD (a) = High Density with in-house plumbing HD (a) 9,612 6% 13,612 7% 79,896 32% HD (b) = High Density unplanned without in-house plumbing HD (b) 100,870 60% 127,844 63% 106,243 43% Total 167,462 100% 204,036 100% 248,719 100% Gauff Ingenieure GmbH 09/06/2014 Greater Harare Water and Sanitation Investment Plan 2 of 3 Epworth Appendix 5-4B: Water Demand forecast Ward No Ward Name Category Area Present Present 2030 Consumption Ave. Dem Peak Season Consumption Ave. Dem Peak Season Consumption Ave. Dem Peak Season Service Domestic Non-domestic Total (incl. NRW) Demand Service Domestic Non-domestic (incl. NRW) Demand Service Domestic Non-domestic Total (incl. NRW) Demand Coverage LD MD HD (a) HD (b) sub-Total Inst. Com. Ind. Sub-total Coverage LD MD HD (a) HD (b) sub-total Inst. Com. Ind. sub-total Total Coverage LD MD HD (a) HD (b) sub-total Inst. Com. Ind. sub-total [ha] [%] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [%] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [%] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] 1 Muguta LD/Inf 802 35% 827.82 - - 331.14 1,159 174 25 199 1,358 2,089 2,611.55 100% 1,971 - - 1,046 3,017 453 38 490 3,507 4,676 5,845.31 100% 1,577 - 1,046 523 3,146 471.90 41 512 3,658 4,573 5,716.25 2 Makomo MD/Inf 275 90% - 2,420 - 53.78 2,474 371 - 371 2,845 4,378 5,471.89 100% - 2,353 - 60 2,413 362 8 369 2,782 3,710 4,637.39 100% - 2,017 120 - 2,137 320.49 8 329 2,465 3,081 3,851.81 3 Dombo la Mwari MD/(HD/Inf 877 50% - 481 409 32.04 921 138 11 149 1,071 1,647 2,058.79 100% - 841 1,089 64 1,994 299 17 316 2,310 3,080 3,849.51 100% - 721 1,217 - 1,938 290.70 18 309 2,247 2,808 3,510.22 4 Chizungu LD/Inf 30 30% 629.64 - - 195.89 826 124 - 124 949 1,461 1,825.69 100% 2,449 - - 1,312 3,761 564 10 574 4,335 5,780 7,225.18 100% 1,959 - 1,312 656 3,927 589.06 11 600 4,527 5,659 7,073.43 5 Maseko MD/Inf 20 90% - 2,636 - 58.57 2,695 404 11 415 3,110 4,784 5,980.54 100% - 2,563 - 65 2,628 394 32 426 3,054 4,072 5,089.75 100% - 2,197 130 - 2,327 349.06 34 383 2,710 3,388 4,234.59 6 Overspill MD/Inf 36 5% - 13 - 49.06 62 9 - 9 71 110 137.04 100% 700 226 - 1,301 2,227 334 14 348 2,575 3,433 4,291.00 100% 560 194 1,301 651 2,705 405.80 15 420 3,126 3,907 4,883.92 7 Ward 7 MD/Inf 501 20% - 316 - 253.14 570 85 - 85 655 1,008 1,259.55 100% - 1,384 - 1,266 2,650 397 12 409 3,059 4,079 5,098.53 100% - 1,187 1,266 633 3,085 462.75 13 475 3,560 4,451 5,563.14 Ext W3/W4 - - - - - - - - 0 - - 100% - - - - - - - - 0 - - 100% - - - 1,787 1,787 268.10 - 268 2,055 2,569 3,211.59 Grand-total 1,457 5,867 409 974 8,706 1,306 47 - 1,353 10,059 15,476 19,345 5,120 7,368 1,089 5,114 18,690 2,804 128 - 2,932 21,622 28,829 36,037 4,096 6,315 6,392 4,250 21,052 3,158 139 - 3,296 24,349 30,436 38,045 Peak Season Factor (psf) 1.25 Specific Consumption Institutional Consumption 15% of domestic Specific Consumption Institutional Consumption 15% of domestic Specific Consumption Institutional Consumption 15% of domestic LD 300 LD 250 LD 200 MD 200 MD 175 MD 150 HD (a) 85 HD (a) 80 HD (a) 80 HD (b) 40 HD (b) 40 HD (b) 40 Physical Leakage in 2012 35.0% Physical Leakage in 2020 25.0% Physical Leakage in 2030 20.0% LD = Low Density MD = Medium Density HD (a) = High Density with in-house plumbing HD (b) = High Density unplanned without in-house plumbing Gauff Ingenieure GmbH 09/06/2014 Greater Harare Water and Sanitation Investment Plan 3 of 3 Epworth Appendix 5-4C: Wastewater Flow Estimates Ward Ward Name Category Present 2020 2030 no. Cov. Wastewater flow Cov. Wastewater flow Cov. Wastewater flow LD MD HD Inst Com. Ind Total LD MD HD Inst Com. Ind. Total LD MD HD Inst Com. Ind. Total [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] 1 Muguta LD/Inf 0% - - - - - - - 0% - - - - - - - 35% 345 - 389 165 14 - 913 2 Makomo MD/Inf 0% - - - - - - - 0% - - - - - - - 90% - 1,588 114 288 7 - 1,998 3 Dombo la Mwari MD/(HD/Inf 0% - - - - - - - 0% - - - - - - - 50% - 315 647 145 9 - 1,116 4 Chizungu LD/Inf 0% - - - - - - - 0% - - - - - - - 30% 367 - 418 177 3 - 965 5 Maseko MD/Inf 0% - - - - - - - 0% - - - - - - - 90% - 1,730 124 314 31 - 2,199 6 Overspill MD/Inf 0% - - - - - - - 0% - - - - - - - 5% 18 8 69 20 1 - 116 7 Ward 7 MD/Inf 0% - - - - - - - 0% - - - - - - - 20% - 208 269 93 3 - 572 Ext W3/W4 0% - - - - - - - 0% - - - - - - - 20% - - - 54 - - 54 Total - - - - - - - - - - - - - - 730 3,850 2,031 1,256 68 - 7,934 Gauff Ingenieure GmbH 09/06/2014 Greater Harare Water and Sanitation Investment Plan 1 of 3 NORTON Appendix 5-5A: Proportion of Population in Housing Categories Ward No. Ward Name Category Area Present 2020 2030 % in consumer category Population in consumer category % in consumer category Population in consumer category % in consumer category Population in consumer category LD MD HD (a) HD (b) LD MD HD (a) HD (b) Total LD MD HD (a) HD (b) LD MD HD (a) HD (b) Total LD MD HD (a) HD (b) LD MD HD (a) HD (b) Total [ha] [%] [%] [%] [%] [No] [No] [No] [No] [No] [%] [%] [%] [%] [No] [No] [No] [No] [No] [%] [%] [%] [No] [No] [No] [No] 1 Twinlakes LD 764 100% 0% 0% 0% 4,630 4,630 100% 0% 0% 0% 4,812 4,812 100% 0% 0% 0% 4,812 4,812 2 Galloway LD 896 100% 0% 0% 0% 535 535 100% 0% 0% 0% 2,285 2,285 100% 0% 0% 0% 5,785 5,785 3 Nharira LD 415 100% 0% 0% 0% 3,169 3,169 100% 0% 0% 0% 3,169 3,169 100% 0% 0% 0% 3,169 3,169 4 Knowe LD 1,931 100% 0% 0% 0% 7,778 7,778 100% 0% 0% 0% 11,278 11,278 100% 0% 0% 0% 16,983 16,983 5 Ngoni HD 57 0% 0% 100% 0% 2,522 2,522 0% 0% 100% 0% 2,522 2,522 0% 0% 100% 0% 2,522 2,522 6 Damofalls HD 638 0% 0% 100% 0% 2,350 2,350 30% 0% 70% 0% 1,008 2,350 3,358 55% 0% 45% 0% 2,870 2,350 5,220 7 Katanga HD 25 0% 0% 100% 0% 4,256 4,256 0% 0% 100% 0% 4,256 4,256 0% 0% 100% 0% 4,256 4,256 8 Katanga HD 36 0% 0% 100% 0% 3,809 3,809 0% 0% 100% 0% 3,809 3,809 0% 0% 100% 0% 3,809 3,809 9 Katanga HD 38 0% 0% 100% 0% 3,735 3,735 0% 0% 100% 0% 3,735 3,735 0% 0% 100% 0% 3,735 3,735 10 Katanga Phase 1 & 2 HD 82 0% 0% 100% 0% 3,455 3,455 0% 0% 100% 0% 3,455 3,455 0% 0% 100% 0% 3,455 3,455 11 Katanga Phase 1 & 2 HD 144 0% 0% 100% 0% 5,438 5,438 0% 0% 100% 0% 9,438 9,438 0% 0% 100% 0% 9,438 9,438 12 Maridale HD 395 0% 0% 100% 0% 17,836 17,836 0% 0% 100% 0% 25,334 25,334 0% 0% 100% 0% 25,336 25,336 13 Johannesburg, Marshlands HD 584 0% 0% 100% 0% 8,078 8,078 0% 0% 100% 0% 17,155 17,155 8% 0% 92% 0% 1,400 17,158 18,558 SP-1 Chegutu14 - 0 0 0% 0% 100% 0% 39,825 39,825 SP-2 0 - 0 0 0 Grand-total 6,005 16,112 - 51,479 - 67,591 22,552 - 72,054 - 94,606 35,019 - 111,884 - 146,903 Category 2012 2020 2030 Population Prop (%) Population Prop (%) Population Prop (%) LD = Low Density LD 16,112 24% 22,552 24% 35,019 24% MD = Medium Density MD - 0% - 0% - 0% HD (a) = High Density with in-house plumbing HD (a) 51,479 76% 72,054 76% 111,884 76% HD (b) = High Density unplanned without in-house plumbing HD (b) - 0% - 0% - 0% Total 67,591 100% 94,606 100% 146,903 100% Gauff Ingenieure GmbH 09/06/2014 Greater Harare Water and Sanitation Investment Plan 2 of 3 NORTON Appendix 5-5B: Water Demand forecast Ward No Ward Name Category Area Present 2020 2030 Consumption Ave. Dem Peak Season Consumption Ave. Dem Peak Season Consumption Ave. Dem Peak Season Service Domestic Non-domestic Total (incl. NRW) Demand Service Domestic Non-domestic (incl. NRW) Demand Service Domestic Non-domestic Total (incl. NRW) Demand Coverage LD MD HD (a) HD (b) sub-Total Inst. Com. Ind. Sub-total Coverage LD MD HD (a) HD (b) sub-total Inst. Com. Ind. sub-total Total Coverage LD MD HD (a) HD (b) sub-total Inst. Com. Ind. sub-total [ha] [%] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [%] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [%] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] 1 Twinlakes 764 100% 1,389.00 - - - 1,389 208 30.00 1,040.00 1,278 2,667 4,104 5,129.52 100% 1,203 - - - 1,203 180 48 1,664 1,892 3,095 4,127 5,159.08 100% 962 - - - 962 144.36 60 2,080 2,284 3,247 4,058 5,073.06 2 Galloway 896 100% 160.50 - - - 161 24 - - 24 185 284 354.95 100% 571 - - - 571 86 - - 86 657 876 1,094.90 100% 1,157 - - - 1,157 173.55 - - 174 1,331 1,663 2,078.98 3 Nharira 415 100% 950.70 - - - 951 143 9.00 1,210.00 1,362 2,312 3,557 4,446.74 100% 792 - - - 792 119 14 1,936 2,069 2,861 3,815 4,769.15 100% 634 - - - 634 95.07 18 2,420 2,533 3,167 3,959 4,948.23 4 Knowe 1,931 100% 2,333.40 - - - 2,333 350 - 20.00 370 2,703 4,159 5,198.87 100% 2,820 - - - 2,820 423 - 32 455 3,274 4,366 5,457.38 100% 3,397 - - - 3,397 509.49 - 40 549 3,946 4,933 6,165.77 5 Ngoni 57 100% - - 214 - 214 32 15.00 - 47 262 402 502.93 100% - - 202 - 202 30 24 - 54 256 341 426.71 100% - - 202 - 202 30.26 30 - 60 262 328 409.41 6 Damofalls 638 100% - - 200 - 200 30 9.00 - 39 239 367 459.06 100% 252 - 188 - 440 66 14 - 80 520 694 867.33 100% 574 - 188 - 762 114.30 18 - 132 894 1,118 1,397.34 7 Katanga 25 100% - - 362 - 362 54 - - 54 416 640 800.05 100% - - 340 - 340 51 - - 51 392 522 652.59 100% - - 340 - 340 51.07 - - 51 392 489 611.80 8 Katanga 36 100% - - 324 - 324 49 - - 49 372 573 716.02 100% - - 305 - 305 46 - - 46 350 467 584.05 100% - - 305 - 305 45.71 - - 46 350 438 547.54 9 Katanga 38 100% - - 317 - 317 48 26.25 - 74 391 602 752.59 100% - - 299 - 299 45 42 - 87 386 514 642.70 100% - - 299 - 299 44.82 53 - 97 396 495 618.94 10 Katanga Phase 1 & 2 82 100% - - 294 - 294 44 12.75 - 57 350 539 673.99 100% - - 276 - 276 41 20 - 62 338 451 563.77 100% - - 276 - 276 41.46 26 - 67 343 429 536.50 11 Katanga Phase 1 & 2 144 100% - - 462 - 462 69 7.50 - 77 539 829 1,036.66 100% - - 755 - 755 113 12 - 125 880 1,174 1,467.16 100% - - 755 - 755 113.26 15 - 128 883 1,104 1,380.15 12 Maridale 395 100% - - 1,516 - 1,516 227 - - 227 1,743 2,682 3,352.83 100% - - 2,027 - 2,027 304 - - 304 2,331 3,108 3,884.55 100% - - 2,027 - 2,027 304.03 - - 304 2,331 2,914 3,642.05 13 Johannesburg, Marshlands 584 100% - - 687 - 687 103 - 50.00 153 840 1,292 1,614.66 100% - - 1,372 - 1,372 206 - 80 286 1,658 2,211 2,763.77 100% 280 - 1,373 - 1,653 247.90 - 100 348 2,001 2,501 3,125.84 SP-1 Chegutu14 - 100% - - - - - - - - - 0 - - 100% - - - - - - - - - 0 - - 100% - - 3,186 - 3,186 477.90 - - 478 3,664 4,580 5,724.84 SP-2 - 100% - - - - - - - - - 0 - - 100% - - - - - - - - - 0 - - 100% - - - - - - - - - 0 - - Grand-total 4,834 - 4,376 - 9,209 1,381 110 2,320 3,811 13,020 20,031 25,039 5,638 - 5,764 - 11,402 1,710 175 3,712 5,598 17,000 22,666 28,333 7,004 - 8,951 - 15,955 2,393 219 4,640 7,252 23,207 29,008 36,260 Peak Season Factor (psf) 1.25 Specific Consumption Institutional Consumption 15% of domestic Specific Consumption Institutional Consumption 15% of domestic Specific Consumption Institutional Consumption 15% of domestic LD 300 LD 250 LD 200 MD 200 MD 175 MD 150 HD (a) 85 HD (a) 80 HD (a) 80 HD (b) 40 HD (b) 40 HD (b) 40 Physical Leakage in 2012 35.0% Physical Leakage in 2020 25.0% Physical Leakage in 2030 20.0% LD = Low Density MD = Medium Density HD (a) = High Density with in-house plumbing HD (b) = High Density unplanned without in-house plumbing Gauff Ingenieure GmbH 09/06/2014 Greater Harare Water and Sanitation Investment Plan 3 of 3 NORTON Appendix 5-5C: Wastewater Flow Estimates Ward Ward Name Category Present 2020 2030 no. Cov. Wastewater flow Cov. Wastewater flow Cov. Wastewater flow LD MD HD Inst Com. Ind Total LD MD HD Inst Com. Ind. Total LD MD HD Inst Com. Ind. Total [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] 1 Twinlakes 25% 217 - - 52 8 228 504 25% 188 - - 45 12 364 609 25% 150 - - 36 15 455 656 2 Galloway 0% - - - - - - - 0% - - - - - - - 0% - - - - - - - 3 Nharira 33% 196 - - 47 3 349 595 33% 163 - - 39 5 559 766 33% 131 - - 31 6 699 867 4 Knowe 0% - - - - - - - 0% - - - - - - - 0% - - - - - - - 5 Ngoni 100% - - 228 32 15 - 275 100% - - 214 30 24 - 269 100% - - 214 30 30 - 275 6 Damofalls 100% - - 212 30 9 - 251 100% 158 - 200 66 14 - 438 100% 359 - 200 114 18 - 691 7 Katanga 100% - - 384 54 - - 439 100% - - 362 51 - - 413 100% - - 362 51 - - 413 8 Katanga 100% - - 344 49 - - 393 100% - - 324 46 - - 369 100% - - 324 46 - - 369 9 Katanga 100% - - 337 48 26 - 411 100% - - 317 45 42 - 404 100% - - 317 45 53 - 415 10 Katanga Phase 1 & 2 100% - - 312 44 13 - 369 100% - - 294 41 20 - 356 100% - - 294 41 26 - 361 11 Katanga Phase 1 & 2 100% - - 491 69 8 - 568 100% - - 802 113 12 - 927 100% - - 802 113 15 - 930 12 Maridale 0% - - - - - - - 100% - - 2,153 304 - - 2,457 100% - - 2,154 304 - - 2,458 13 Johannesburg, Marshlands 0% - - - - - - - 100% - - 1,458 206 - 70 1,734 100% 175 - 1,458 248 - 88 1,969 SP-1 - - - - - - - - - - - - - - 100% - - 3,385 478 - - 3,863 SP-2 - - - - - - - - - - - - - - - - - - - - - Total 413 - 2,309 425 81 577 3,805 509 - 6,125 987 130 993 8,743 815 - 9,510 1,538 162 1,241 13,266 Gauff Ingenieure GmbH 09/06/2014 Greater Harare Water and Sanitation Investment Plan 1 of 3 RUWA Appendix 5-6A: Proportion of Population in Housing Categories Ward No. Ward Name Category Area Present 2020 2030 % in consumer category Population in consumer category % in consumer category Population in consumer category % in consumer category Population in consumer category LD MD HD (a) HD (b) LD MD HD (a) HD (b) Total LD MD HD (a) HD (b) LD MD HD (a) HD (b) Total LD MD HD (a) HD (b) LD MD HD (a) HD (b) Total [ha] [%] [%] [%] [%] [No] [No] [No] [No] [No] [%] [%] [%] [%] [No] [No] [No] [No] [No] [%] [%] [%] [No] [No] [No] [No] 1 Runyararo HD 110 100% 6,518 6,518 0% 0% 100% 0% 8,518 8,518 0% 0% 100% 0% 8,518 8,518 2 Runyararo, Sebassa HD 156 100% 5,373 5,373 0% 0% 100% 0% 7,373 7,373 0% 0% 100% 0% 7,373 7,373 3 Mash Holdings HD 53 100% 3,731 3,731 0% 0% 100% 0% 3,731 3,731 0% 0% 100% 0% 3,731 3,731 4 Eight Five Six HD 22 100% 2,368 2,368 0% 0% 100% 0% 2,368 2,368 0% 0% 100% 0% 2,368 2,368 5 Kaymer Farm HD 269 100% 2,329 2,329 0% 0% 100% 0% 14,929 14,929 0% 0% 100% 0% 32,329 32,329 6 H of Galway HD 54 100% 2,896 2,896 0% 0% 100% 0% 2,896 2,896 0% 0% 100% 0% 2,896 2,896 7 Hofmoor Estate, Boulders, New Inverneil, Ednora LD 1,338 100% 4,493 4,493 100% 0% 0% 0% 6,796 6,796 54% 0% 46% 0% 14,580 12,500 27,080 8 Zimre Park MD 532 100% 13,695 13,695 0% 100% 0% 0% 14,955 14,955 0% 100% 0% 0% 14,955 14,955 9 Everangus, Sebastopol, Tara Township LD/MD/HD 1,473 15% 15% 70% 2,240 2,240 10,450 14,930 14% 29% 57% 0% 5,600 12,110 23,450 41,160 12% 36% 52% 0% 5,600 16,240 23,450 45,290 Ext W3 Athelney Farm - 0 0 0% 0% 100% 0% 4,000 4,000 Ext W5/W7 Mara Farms - 0 0% 0% 100% 0% 10,000 10,000 Ext W9 Tarisa farm - 0 0% 0% 100% 0% 9,956 9,956 0% 0% 100% 0% 16,430 16,430 Grand-total 4,007 6,733 15,935 33,665 - 56,333 12,396 27,065 73,221 - 112,682 20,180 31,195 123,595 - 174,970 Category 2012 2020 2030 Population Prop (%) Population Prop (%) Population Prop (%) LD = Low Density LD 6,733 12% 12,396 11% 20,180 12% MD = Medium Density MD 15,935 28% 27,065 24% 31,195 18% HD (a) = High Density with in-house plumbing HD 33,665 60% 73,221 65% 123,595 71% HD (b) = High Density unplanned without in-house plumbing Total 56,333 100% 112,682 100% 174,970 100% Gauff Ingenieure GmbH 09/06/2014 Greater Harare Water and Sanitation Investment Plan 2 of 3 RUWA Appendix 5-6B: Water Demand forecast Ward No. Ward Name Category Area Present 2020 2030 Ave. Dem Peak Season Consumption Ave. Dem Peak Season Consumption Ave. Dem Peak Season Service Domestic Non-domestic Total (incl. NRW) Demand Service Domestic Non-domestic (incl. NRW) Demand Service Domestic Non-domestic Total (incl. NRW) Demand Coverage LD MD HD (a) HD (b) sub-Total Inst. Com. Ind. Sub-total Coverage LD MD HD (a) HD (b) sub-total Inst. Com. Ind. sub-total Total Coverage LD MD HD (a) HD (b) sub-total Inst. Com. Ind. sub-total [ha] [%] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [%] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [%] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] 1 Runyararo HD 110 100% - - 554.03 - 554 83 46.80 129.00 259 813 1,251 1,563.34 100% - - 681 - 681 102 94 215 411 1,092 1,456 1,820.43 100% - - 681 - 681 102.22 125 301 528 1,209 1,512 1,889.78 2 Runyararo, Sebassa HD 156 65% - - 296.86 - 297 45 15.75 - 60 357 549 686.80 100% - - 590 - 590 88 32 - 120 710 946 1,183.03 100% - - 590 - 590 88.48 42 - 130 720 900 1,125.49 3 Mash Holdings HD 53 100% - - 317.14 - 317 48 7.50 - 55 372 573 715.78 100% - - 298 - 298 45 11 - 55 354 472 589.59 100% - - 298 - 298 44.77 15 - 60 358 448 559.77 4 Eight Five Six HD 22 100% - - 201.28 - 201 30 - - 30 231 356 445.14 100% - - 189 - 189 28 - - 28 218 290 363.09 100% - - 189 - 189 28.42 - - 28 218 272 340.40 5 Kaymer Farm HD 269 100% - - 197.97 - 198 30 9.00 - 39 237 364 455.11 100% - - 1,194 - 1,194 179 23 - 202 1,396 1,861 2,326.61 100% - - 2,586 - 2,586 387.95 36 - 424 3,010 3,763 4,703.54 6 H of Galway HD 54 100% - - 246.16 - 246 37 3.75 - 41 287 441 551.60 100% - - 232 - 232 35 5 - 40 272 362 452.80 100% - - 232 - 232 34.75 8 - 42 274 342 428.02 7 Hofmoor Estate, Boulders, New Inverneil, Ednora LD 1,338 100% 1,348 - - - 1,348 202 57.90 700.00 960 2,308 3,551 4,438.43 100% 1,699 - - - 1,699 255 145 1,750 2,150 3,849 5,131 6,414.33 100% 2,916 - 1,000 - 3,916 587.40 232 2,450 3,269 7,185 8,981 11,226.56 8 Zimre Park MD 532 100% - 2,739 - - 2,739 411 98.25 - 509 3,248 4,997 6,246.35 100% - 2,617 - - 2,617 393 138 - 530 3,147 4,196 5,245.41 100% - 2,243 - - 2,243 336.49 197 - 533 2,776 3,470 4,337.87 9 Everangus, Sebastopol, Tara Township LD/MD/HD 1,473 100% 672 448 888.25 - 2,008 301 101.25 250.00 652 2,661 4,093 5,116.80 100% 1,400 2,119 1,876 - 5,395 809 142 2,000 2,951 8,346 11,128 13,910.48 100% 1,120 2,436 1,876 - 5,432 814.80 203 3,000 4,017 9,449 11,812 14,764.53 Ext W3 Athelney Farm - 0% - - - - - - - - - 0 - - 0% - - - - - - - - - 0 - - 100% - - 320 - 320 48.00 - - 48 368 460 575.00 Ext W5/W7 Mara Farms - 0% - - - - - - - - - 0 - - 0% - - - - - - - - - 0 - - 100% - - 800 - 800 120.00 - - 120 920 1,150 1,437.50 Ext W9 Tarisa farm - 0% - - - - - - - - - 0 - - 100% - - 796 - 796 119 - - 119 916 1,221 1,526.59 100% - - 1,314 - 1,314 197.16 - - 197 1,512 1,889 2,361.81 Grand-total 4,007 2,020 3,187 2,702 - 7,909 1,186 340 1,079 2,605 10,514 16,175 20,219 3,099 4,736 5,858 - 13,693 2,054 587 3,965 6,606 20,299 27,066 33,832 4,036 4,679 9,888 - 18,603 2,790 856 5,751 9,397 28,000 35,000 43,750 Peak Season Factor (psf) 1.25 Specific Consumption Institutional Consumption 15% of domestic Specific Consumption Institutional Consumption 15% of domestic Specific Consumption Institutional Consumption 15% of domestic LD 300 LD 250 LD 200 MD 200 MD 175 MD 150 HD (a) 85 HD (a) 80 HD (a) 80 HD (b) 40 HD (b) 40 HD (b) 40 Physical Leakage in 2012 35.0% Physical Leakage in 2020 25.0% Physical Leakage in 2030 20.0% LD = Low Density MD = Medium Density HD (a) = High Density with in-house plumbing HD (b) = High Density unplanned without in-house plumbing Gauff Ingenieure GmbH 09/06/2014 Greater Harare Water and Sanitation Investment Plan 3 of 3 RUWA Appendix 5-6C: Wastewater Flow Estimates Ward Ward Name Category Present 2020 2030 no. Cov. Wastewater flow Cov. Wastewater flow Cov. Wastewater flow LD MD HD Inst Com. Ind Total LD MD HD Inst Com. Ind. Total LD MD HD Inst Com. Ind. Total % [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] [m3/day] 1Runyararo 100% - - 589 83 47 113 831 100% - - 724 102 94 188 1,108 100% - - 724 102 125 263 1,214 2Runyararo, Sebassa 100% - - 315 45 16 - 376 100% - - 627 88 32 - 747 100% - - 627 88 42 - 757 3Mash Holdings 100% - - 337 48 8 - 392 100% - - 317 45 11 - 372 100% - - 317 45 15 - 377 4Eight Five Six 100% - - 214 30 - - 244 100% - - 201 28 - - 230 100% - - 201 28 - - 230 5Kaymer Farm 100% - - 210 30 9 - 249 100% - - 1,269 179 23 - 1,471 100% - - 2,748 388 36 - 3,172 6H of Galway 100% - - 262 37 4 - 302 100% - - 246 35 5 - 286 100% - - 246 35 8 - 288 7Hofmoor Estate, Boulders, New Inverneil, Ednora 90% 758 - - 182 52 551 1,544 100% 1,062 - - 255 145 1,531 2,993 100% 1,823 - 1,063 587 232 2,144 5,848 8Zimre Park 100% - 2,397 - 411 98 - 2,906 100% - 2,290 - 393 138 - 2,820 100% - 1,963 - 336 197 - 2,496 9Everangus, Sebastopol, Tara Township 100% 420 392 944 301 101 219 2,377 100% 875 1,854 1,993 809 142 1,750 7,424 100% 700 2,132 1,993 815 203 2,625 8,467 Ext W3 Athelney Farm - - - - - - - - - - - - - - 100% - - 340 48 - - 388 Ext W5/W7 Mara Farms - - - - - - - - - - - - - - 100% - - 850 120 - - 970 Ext W9 Tarisa farm - - - - - - - 100% - - 846 119 - - 966 100% - - 1,397 197 - - 1,594 Total 1,178 2,789 2,871 1,166 334 883 9,221 1,937 4,144 6,224 2,054 587 3,469 18,416 2,523 4,094 10,506 2,790 856 5,032 25,801 Gauff Ingenieure GmbH 09/06/2014 APPENDIX 8: INSTITUTIONAL CAPACITY ASSESSMENT Gauff Ingenieure Greater Harare Water and Sanitation Investment Plan Investment Plan Report Appendix 8 Appendix 8: Institutional Capacity Assessment Table A8.1: Proposed Reduction of Current Harare Water Department Establishment Numbers (2338 to 1924) Job Title Department Activity Number Grade Director, Harare Water and Water and Overall 1 Sewerage Services Sewerage Management company Finance and Administration Finance In charge of 1 Manager financial services Distribution and Customer Distribution In charge of 1 services Manager and distribution and Commercial commercial Operations operations Planning and Technical Services Technical In charge of 1 Manager Operations technical operations Production Manager Water In charge of 1 Operations production of water Waste Water Manager Waste water In charge of 1 operations WWTP and WW reticulation Maintenance Manager Maintenance In charge of Services workshops Quality Assurance Manager Quality control In charge of QC 1 services labs for both water and sewerage and trade effluents Internal Auditor Audit 1 8 Internal Audit Clerk Audit 1 3 Chief Information Systems Officer Information ICT services 1 10 Systems support Officer Information ICT services 1 9 Technician Information ICT services 1 8 Chief Human Capital Human Human Resources 1 10 Resource Services Human Capital Officers Human Human Resources 1 9 Resource Services Senior Human Capital Clerks Human Human Resources 2 4 Resource Services Human Capital Clerks Human Human Resources 2 3 Resource Services Payroll Officer Human Human Resources 1 9 Resource Services Senior Payroll Clerk Human Human Resources 2 4 Resource Services Payroll Clerks Human Human Resources 1 3 Resource Services Financial Accountant Finance & Finance 1 9 Admin Gauff Ingenieure 1 Greater Harare Water and Sanitation Investment Plan Investment Plan Report Appendix 8 Job Title Department Activity Number Grade Management Accountant Finance & Finance services 1 9 Admin Procurement and Stores Officer Finance & Finance services 1 9 Admin Senior Administration Officer Finance & Administration 1 10 Admin services Accounting Officers Finance & Finance 4 6 Admin Accounts Clerks Finance & Finance 4 4 Admin Registry Supervisor Finance & Administration 1 5 Admin Transport Supervisor Finance & Administration 1 5 Admin Senior Administration Clerk Finance & Administration 2 4 Admin Administrative Clerk Finance & Administration 1 3 Admin Secretary and administrative Administration Support 1 6 assistant to Director HW Secretary to Finance Director Administration Support 1 5 Switch Board Operator Finance & Support 1 3 Admin Typists Finance & Support 2 3 Admin Drivers Finance & Support 2 3 Admin Commissionaire Finance & Support 1 2 Admin Waiter Finance & Support 4 2 Admin Messenger / Cleaner Finance & Support 6 1 Admin Production Engineer Production In charge water 1 10 Treatment Works Sr/Principal Engineer Production 1 9 Chief Civil Engineering Production 2 7 Technician Civil Engineering technician Production 2 5 Secretary to Production director Administration support 1 3 Senior Superintendent Production Morton Jaffray 1 9 Shift Supervisors Production Morton Jaffray 5 7 Superintendent Production Morton Jaffray 1 7 Water Works Attendant Production Morton Jaffray 28 6 Assistant Water Works Attendant Production Morton Jaffray 13 4 Senior Operators Production Morton Jaffray 90 4 Senior Clerical officer Production Morton Jaffray 1 4 Heavy vehicle Driver Production Morton Jaffray 6 4 Gauff Ingenieure 2 Greater Harare Water and Sanitation Investment Plan Investment Plan Report Appendix 8 Job Title Department Activity Number Grade Cooks Supervisor Production Morton Jaffray 1 4 Operators Production Morton Jaffray 54 3 Cooks Production Morton Jaffray 6 2 Senior Superintended Production Prince Edward 1 9 WW Water works attendant Production Prince Edward 11 6 WW Assistant WW attendant Production Prince Edward 3 4 WW Water bailiff Production Prince Edward 1 4 WW Senior clerical officer Production Prince Edward 1 4 WW Light Vehicle Driver Production Prince Edward 2 4 WW Senior Operator Production Prince Edward 26 4 WW Operator Production Prince Edward 20 3 WW Cooks Production Prince Edward 3 2 WW General Labourer Production Prince Edward 2 1 WW Distribution Engineer Distribution & Distribution 1 10 Commercial Works Superintended Distribution Water Workshop 1 9 (T) Foreman Distribution Water Workshop 2 7 (T) Skilled Worker 1 (Plumber) Distribution Water Workshop 7 6 (T) Skilled Worker 1 (Fitter and Distribution Water Workshop 1 6 Turner) (T) Skilled Worker 2 Meter Assembly Distribution Water Workshop 1 5 (T) Pump Station Attendant Distribution Water Workshop 4 5 (T) Skilled Worker 2: Bitumen Painter Distribution Water Workshop 1 5 (T) Skilled Worker 3: (Plumber) Distribution Water Workshop 7 4 (T) Skilled Worker 3: (Bricklayer) Distribution Water Workshop 2 4 (T) Senior Clerical Officer Distribution Water Workshop 1 4 (T) Heavy Vehicle Driver Distribution Water Workshop 2 4 (T) Senior Operator Distribution Water Workshop 33 4 (T) Operator Distribution Water Workshop 73 3 Gauff Ingenieure 3 Greater Harare Water and Sanitation Investment Plan Investment Plan Report Appendix 8 Job Title Department Activity Number Grade (T) Works Superintended Distribution Maintenance W W 1 9 Foreman (Plumber) Distribution Maintenance WW 3 7 Foreman (Boilermaker) Distribution Maintenance WW 1 7 Skilled Worker 1: (Plumber) Distribution Maintenance WW 9 6 Skilled Worker 1: (Boilermaker) Distribution Maintenance WW 1 6 Skilled Worker 2: (Water met. Distribution Maintenance WW 1 5 Ass) Skilled worker 2: (Welder) Distribution Maintenance WW 2 5 Skilled Worker 3 (Plumber) Distribution Maintenance WW 9 4 Skilled Worker 3 (Bricklayer) Distribution Maintenance WW 2 4 Store man Distribution Maintenance WW 1 4 Senior Clerical Officer Distribution Maintenance WW 1 4 Heavy vehicle driver Distribution Maintenance WW 4 4 Senior Operator Distribution Maintenance WW 30 4 Operator Distribution Maintenance WW 100 3 Senior Superintended Distribution Warren Control 1 9 Superintended Distribution Warren Control 2 7 Water Works attendant Distribution Warren Control 13 6 Asst. Water Works attendant Distribution Warren Control 6 4 Light Vehicle Driver Distribution Warren Control 4 4 Senior Clerical Officer Distribution Warren Control 1 4 Senior Operator Distribution Warren Control 13 4 Operator Distribution Warren Control 10 3 Cooks Distribution Warren Control 2 2 General Labour Distribution Warren Control 2 1 Works Superintended Distribution Hartfield/Waterfalls 1 9 Foreman Distribution Hartfield/Waterfalls 1 7 Skilled Worker 1: (Plumber) Distribution Hartfield/Waterfalls 1 6 Heavy Vehicle driver Distribution Hartfield/Waterfalls 1 4 Skilled Worker 3: (Plumber) Distribution Hartfield/Waterfalls 2 4 Senior Operator Distribution Hartfield/Waterfalls 8 4 Clerical Officer Distribution Hartfield/Waterfalls 1 3 Operator Distribution Hartfield/Waterfalls 28 3 Snr/Principal Engineer Distribution 1 9 Chief Civil Eng. Technician Distribution 1 7 Chief Technical Officer Distribution 1 6 Civil Eng. Technician Distribution 1 5 Customer Services Officer Distribution 1 5 Senior Operator Distribution 8 4 Technician Assistant Distribution 4 4 Clerical Officer Distribution 1 3 Commercial Services Officer Distribution Commercial 1 10 and Gauff Ingenieure 4 Greater Harare Water and Sanitation Investment Plan Investment Plan Report Appendix 8 Job Title Department Activity Number Grade Commercial Chief Billing Officer Commercial Billing 1 7 Billing Officer Commercial Billing 8 5 Billing Clerk Commercial Billing 10 4 Customer Relations Supervisor Commercial Customer 1 7 Relations Clerical Officers Commercial Customer 8 3 Relations Data Capture Supervisor Commercial Data Capture 1 7 Data Capture Clerks Commercial Data capture 5 3 Chief Meter Reader Commercial Meter Reading 1 6 Ass. Chief Meter Reader Commercial Meter Reading 2 5 Heavy Vehicle Driver Commercial Meter Reading 2 4 SW Plumber Commercial Meter Reading 3 4 Meter Reader Supervisor Commercial Meter Reading 4 4 Meter Reader Commercial Meter reading 60 3 Clerical Officer Commercial Meter Reading 2 3 Area Customer Services Officer Commercial Billing Districts 2 7 Billing Supervisor (Districts) Commercial Billing Districts 11 6 Billing Officer Commercial Billing Districts 22 5 Billing Clerks Commercial Billing Districts 29 4 Meter Readers Supervisor Commercial Billing Districts 14 4 Meter Readers Commercial Billing Districts 129 3 Late Payment Officer Commercial Late payment 1 7 Late Payment Supervisor Commercial Late payment 2 6 Senior Clerical Officers Commercial Late payment 5 4 Snr/Principal Engineer Waste Water 1 9 Chief Civil Eng Technician Waste Water 2 7 Senior Civil Eng Technician Waste Water 2 6 Civil Eng Technician Waste Water 2 5 Maintenance Engineer Waste Water 1 10 Sewerage works superintended Waste Water Suburban 1 9 sewerage works (SSW) Foreman: Sewerage Waste Water SSW 2 7 Skilled worker 1: (Plumber) Waste Water SSW 8 6 Skilled worker 1: (Fitter and Waste Water SSW 1 6 Turner) Pump station attendant Waste Water SSW 5 5 Skilled worker 2: (Bitumen Waste Water SSW 1 5 Painter) Skilled worker 3: (Plumber) Waste Water SSW 9 4 Skilled Worker 3: (Bricklayer) Waste water SSW 2 4 Heavy Duty Vehicle Driver Waste Water SSW 2 4 Senior clerical Officer Waste water SSW 1 4 Gauff Ingenieure 5 Greater Harare Water and Sanitation Investment Plan Investment Plan Report Appendix 8 Job Title Department Activity Number Grade Senior Operator Waste water SSW 36 3 Operator Wastewater SSW 80 3 Works Superintended Waste water Sewerage 1 9 Workshop Foreman (Plumber) Wastewater Sewerage 2 7 Workshop Foreman (Boiler maker) Waste water Sewerage 1 7 Workshop Foreman (Bricklayer) Waste water Sewerage 1 7 Workshop Skilled worker 1: (Plumber) Waste water Sewerage 5 6 Workshop Skilled worker 1 (Boilermaker) Waste water Sewerage 1 6 Workshop Skilled worker 1: (Bricklayer) Waste water Sewerage 1 6 Workshop Skilled Worker 3: (Plumber) Waste water Sewerage 10 4 Workshop Heavy Duty Operator Waste water Sewerage 4 4 Workshop Senior clerical officer Waste water Sewerage 1 4 Workshop Heavy Vehicle driver Waste water Sewerage 3 4 Workshop Senior Operator Waste water Sewerage 24 4 Workshop Operator Waste water Sewerage 65 3 Workshop Plant Engineer Waste water In charge Sewage 1 10 Treatment works Senior Superintended Waste water Crowborough 1 9 Works Attendant Waste water Crowborough 5 6 Asst. Works Attendant Waste water Crowborough 5 5 Senior Operator Waste water Crowborough 52 4 Light Vehicle Driver Waste water Crowborough 2 4 Operator Waste water Crowborough 22 3 General Labourer Waste water Crowborough 12 1 Works Attendant Waste water Firle 10 6 Asst. Works Attendant Waste water Firle 10 5 Senior Operator Waste water Firle 105 4 Light Vehicle Driver Waste water Firle 4 4 Operator Waste water Firle 45 3 General Labourer Waste water Firle 25 1 Senior Superintended Waste water Farm 1 9 Works Attendant Waste water Farm 10 6 Asst. Works Attendant Waste water Farm 10 5 Senior Operator Waste water Farm 110 4 Gauff Ingenieure 6 Greater Harare Water and Sanitation Investment Plan Investment Plan Report Appendix 8 Job Title Department Activity Number Grade Light Vehicle Driver Waste water Farm 4 4 Operator Waste water Farm 50 3 General Labourer Waste water Farm 30 1 Snr/Principal Chemist Quality Chemistry Lab 1 9 Assurance Chief Chem Lab Technician Quality Chemistry Lab 1 7 Assurance Senior Lab technicians Quality Chemistry Lab 2 6 Assurance Lab Technicians Quality Chemistry Lab 5 5 Assurance Technician Assistants Quality Chemistry Lab 4 4 Assurance Handy men Quality Chemistry Lab 4 1 Assurance Microbiologist Quality Microbiology lab 1 9 Assurance Chief Microbio Lab Technician Quality Microbiology lab 1 7 Assurance Senior Lab technicians Quality Microbiology lab 2 6 Assurance Lab Technicians Quality Microbiology lab 4 5 Assurance Technician Assistants Quality Microbiology lab 4 4 Assurance Handy men Quality Microbiology lab 4 1 Assurance Planning Engineer Planning and Planning 1 10 Technical Services (P&TS) Snr/Principal Engineer (Civil) P&TS Planning 1 9 Snr/Principal Engineer (Mech) P&TS Planning 1 9 Snr/Principal Engineer (Elect) P&TS Planning 1 9 Chief Technician Engineer (Civil) P&TS Planning 1 7 Chief Technician Engineer (Mech) P&TS Planning 1 7 Chief Technician Engineer (Elect) P&TS Planning 1 7 Senior Technician Engineer (Civil) P&TS Planning 2 6 Senior Technician Engineer P&TS Planning 2 6 (Mech) Senior Technician Engineer P&TS Planning 2 6 (Elect) Technician Draughtsman (Civil) P&TS Planning 4 4 Technician Draughtsman (Mech) P&TS Planning 1 4 Technician Draughtsman (Elect) P&TS Planning 1 4 Technical Services Engineer P&TS Technical Services 1 10 Snr/Principal Engineer (TS) P&TS Technical Services 1 9 Technician (TS) P&TS Technical Services 1 4 Gauff Ingenieure 7 Greater Harare Water and Sanitation Investment Plan Investment Plan Report Appendix 8 Job Title Department Activity Number Grade Total 1924 Gauff Ingenieure 8 Greater Harare Water and Sanitation Investment Plan Investment Plan Report Appendix 8 Table A8.2: New Proposal for Greater Harare City Autonomous Water and Sewerage Company. (Company independent of Town Council (after 2018)) but forming nucleus for GHWSC Job Title Department Activity Proposed Grade Number Managing Director for Water and Water and Overall 1 12 Sewerage Services Sewerage Management company Finance and Administration Director Finance In charge of 1 11 financial services Distribution and Customer services Distribution In charge of 1 11 Director and distribution and Commercial commercial Operations operations Planning and Technical Operations Technical In charge of 1 11 Director Operations technical operations Production Director Water In charge of 1 11 Operations production of water Waste Water Director Waste water In charge of 1 11 operations WWTP and WW reticulation Maintenance Director Maintenance In charge of 11 Services workshops Quality Assurance Director Quality control In charge of QC 1 11 services labs for both water and sewerage and trade effluents Chief Legal Operations Officer Legal Services In charge of legal 1 11 services Legal Operations officer Legal services 1 8 Legal Services Clerk Legal Services 1 3 Chief Internal Auditor Audit Audit services 1 10 Internal Auditor Audit 1 8 Internal Audit Clerk Audit 1 3 Chief Information Systems Officer Information ICT services 1 10 Systems support Officer Information ICT services 1 9 Technician Information ICT services 1 8 Chief Human Capital Human Human Resources 1 10 Resource Services Human Capital Officers Human Human Resources 1 9 Resource Services Senior Human Capital Clerks Human Human Resources 2 4 Resource Services Human Capital Clerks Human Human Resources 2 3 Resource Services Payroll Officer Human Human Resources 1 9 Resource Services Senior Payroll Clerk Human Human Resources 2 4 Resource Services Gauff Ingenieure 9 Greater Harare Water and Sanitation Investment Plan Investment Plan Report Appendix 8 Job Title Department Activity Proposed Grade Number Payroll Clerks Human Human Resources 1 3 Resource Services Water Works superintendent Water In charge water 1 9 supply Sewage works superintendent Sewerage Sewerage services 1 9 Water and Sewer Reticulation Water and 1 9 Superintended Sewage Environment Officer Garbage 1 9 collection Financial Accountant Finance & Finance 1 9 Admin Management Accountant Finance & Finance services 1 9 Admin Procurement and Stores Officer Finance & Finance services 1 9 Admin Senior Administration Officer Finance & Administration 1 10 Admin services Accounting Officers Finance & Finance 4 6 Admin Accounts Clerks Finance & Finance 4 4 Admin Registry Supervisor Finance & Administration 1 5 Admin Transport Supervisor Finance & Administration 1 5 Admin Senior Administration Clerk Finance & Administration 2 4 Admin Administrative Clerk Finance & Administration 1 3 Admin Secretary and administrative Administration Support 1 6 assistant to MD Billing Officer Finance Billing 1 6 Revenue collection officer Finance Revenue 1 6 Secretary to Finance Director Administration Support 1 5 Switch Board Operator Finance & Support 1 3 Admin Typists Finance & Support 2 3 Admin Drivers Finance & Support 2 3 Admin Commissionaire Finance & Support 1 2 Admin Waiter Finance & Support 4 2 Admin Messenger / Cleaner Finance & Support 6 1 Admin Production Engineer Production In charge water 1 10 Treatment Works Sr/Principal Engineer Production 1 9 Gauff Ingenieure 10 Greater Harare Water and Sanitation Investment Plan Investment Plan Report Appendix 8 Job Title Department Activity Proposed Grade Number Chief Civil Engineering Technician Production 2 7 Civil Engineering technician Production 2 5 Secretary to Production director Administration support 1 3 Senior Superintendent Production Morton Jaffray 1 9 Shift Supervisors Production Morton Jaffray 5 7 Superintendent Production Morton Jaffray 1 7 Water Works Attendant Production Morton Jaffray 28 6 Assistant Water Works Attendant Production Morton Jaffray 13 4 Senior Operators Production Morton Jaffray 90 4 Senior Clerical officer Production Morton Jaffray 1 4 Heavy vehicle Driver Production Morton Jaffray 6 4 Cooks Supervisor Production Morton Jaffray 1 4 Operators Production Morton Jaffray 54 3 Cooks Production Morton Jaffray 6 2 Senior Superintended Production Prince Edward 1 9 WW Water works attendant Production Prince Edward 11 6 WW Assistant WW attendant Production Prince Edward 3 4 WW Water bailiff Production Prince Edward 1 4 WW Senior clerical officer Production Prince Edward 1 4 WW Light Vehicle Driver Production Prince Edward 2 4 WW Senior Operator Production Prince Edward 26 4 WW Operator Production Prince Edward 20 3 WW Cooks Production Prince Edward 3 2 WW General Labourer Production Prince Edward 2 1 WW Distribution Engineer Distribution & Distribution 1 10 Commercial Works Superintended Distribution Water Workshop 1 9 (T) Foreman Distribution Water Workshop 2 7 (T) Skilled Worker 1 (Plumber) Distribution Water Workshop 7 6 (T) Skilled Worker 1 (Fitter and Turner) Distribution Water Workshop 1 6 (T) Skilled Worker 2 Meter Assembly Distribution Water Workshop 1 5 (T) Pump Station Attendant Distribution Water Workshop 4 5 Gauff Ingenieure 11 Greater Harare Water and Sanitation Investment Plan Investment Plan Report Appendix 8 Job Title Department Activity Proposed Grade Number (T) Skilled Worker 2: Bitumen Painter Distribution Water Workshop 1 5 (T) Skilled Worker 3: (Plumber) Distribution Water Workshop 7 4 (T) Skilled Worker 3: (Bricklayer) Distribution Water Workshop 2 4 (T) Senior Clerical Officer Distribution Water Workshop 1 4 (T) Heavy Vehicle Driver Distribution Water Workshop 2 4 (T) Senior Operator Distribution Water Workshop 33 4 (T) Operator Distribution Water Workshop 73 3 (T) Works Superintended Distribution Maintenance W W 1 9 Foreman (Plumber) Distribution Maintenance WW 3 7 Foreman (Boilermaker) Distribution Maintenance WW 1 7 Skilled Worker 1: (Plumber) Distribution Maintenance WW 9 6 Skilled Worker 1: (Boilermaker) Distribution Maintenance WW 1 6 Skilled Worker 2: (Water met. Ass) Distribution Maintenance WW 1 5 Skilled worker 2: (Welder) Distribution Maintenance WW 2 5 Skilled Worker 3 (Plumber) Distribution Maintenance WW 9 4 Skilled Worker 3 (Bricklayer) Distribution Maintenance WW 2 4 Store man Distribution Maintenance WW 1 4 Senior Clerical Officer Distribution Maintenance WW 1 4 Heavy vehicle driver Distribution Maintenance WW 4 4 Senior Operator Distribution Maintenance WW 30 4 Operator Distribution Maintenance WW 100 3 Senior Superintended Distribution Warren Control 1 9 Superintended Distribution Warren Control 2 7 Water Works attendant Distribution Warren Control 13 6 Asst. Water Works attendant Distribution Warren Control 6 4 Light Vehicle Driver Distribution Warren Control 4 4 Senior Clerical Officer Distribution Warren Control 1 4 Senior Operator Distribution Warren Control 13 4 Operator Distribution Warren Control 10 3 Cooks Distribution Warren Control 2 2 General Labour Distribution Warren Control 2 1 Works Superintended Distribution Hartfield/Waterfalls 1 9 Foreman Distribution Hartfield/Waterfalls 1 7 Skilled Worker 1: (Plumber) Distribution Hartfield/Waterfalls 1 6 Heavy Vehicle driver Distribution Hartfield/Waterfalls 1 4 Skilled Worker 3: (Plumber) Distribution Hartfield/Waterfalls 2 4 Senior Operator Distribution Hartfield/Waterfalls 8 4 Gauff Ingenieure 12 Greater Harare Water and Sanitation Investment Plan Investment Plan Report Appendix 8 Job Title Department Activity Proposed Grade Number Clerical Officer Distribution Hartfield/Waterfalls 1 3 Operator Distribution Hartfield/Waterfalls 28 3 Snr/Principal Engineer Distribution 1 9 Chief Civil Eng. Technician Distribution 1 7 Chief Technical Officer Distribution 1 6 Civil Eng. Technician Distribution 1 5 Customer Services Officer Distribution 1 5 Senior Operator Distribution 8 4 Technician Assistant Distribution 4 4 Clerical Officer Distribution 1 3 Commercial Services Officer Distribution Commercial 1 10 and Commercial Chief Billing Officer Commercial Billing 1 7 Billing Officer Commercial Billing 8 5 Billing Clerk Commercial Billing 10 4 Customer Relations Supervisor Commercial Customer 1 7 Relations Clerical Officers Commercial Customer 8 3 Relations Data Capture Supervisor Commercial Data Capture 1 7 Data Capture Clerks Commercial Data capture 5 3 Chief Meter Reader Commercial Meter Reading 1 6 Ass. Chief Meter Reader Commercial Meter Reading 2 5 Heavy Vehicle Driver Commercial Meter Reading 2 4 SW Plumber Commercial Meter Reading 3 4 Meter Reader Supervisor Commercial Meter Reading 4 4 Meter Reader Commercial Meter reading 60 3 Clerical Officer Commercial Meter Reading 2 3 Area Customer Services Officer Commercial Billing Districts 2 7 Billing Supervisor (Districts) Commercial Billing Districts 11 6 Billing Officer Commercial Billing Districts 22 5 Billing Clerks Commercial Billing Districts 29 4 Meter Readers Supervisor Commercial Billing Districts 14 4 Meter Readers Commercial Billing Districts 129 3 Late Payment Officer Commercial Late payment 1 7 Late Payment Supervisor Commercial Late payment 2 6 Senior Clerical Officers Commercial Late payment 5 4 Snr/Principal Engineer Waste Water 1 9 Chief Civil Eng Technician Waste Water 2 7 Senior Civil Eng Technician Waste Water 2 6 Civil Eng Technician Waste Water 2 5 Maintenance Engineer Waste Water 1 10 Sewerage works superintended Waste Water Suburban 1 9 Gauff Ingenieure 13 Greater Harare Water and Sanitation Investment Plan Investment Plan Report Appendix 8 Job Title Department Activity Proposed Grade Number sewerage works (SSW) Foreman: Sewerage Waste Water SSW 2 7 Skilled worker 1: (Plumber) Waste Water SSW 8 6 Skilled worker 1: (Fitter and Turner) Waste Water SSW 1 6 Pump station attendant Waste Water SSW 5 5 Skilled worker 2: (Bitumen Painter) Waste Water SSW 1 5 Skilled worker 3: (Plumber) Waste Water SSW 9 4 Skilled Worker 3: (Bricklayer) Waste water SSW 2 4 Heavy Duty Vehicle Driver Waste Water SSW 2 4 Senior clerical Officer Waste water SSW 1 4 Senior Operator Waste water SSW 36 3 Operator Wastewater SSW 80 3 Works Superintended Waste water Sewerage 1 9 Workshop Foreman (Plumber) Wastewater Sewerage 2 7 Workshop Foreman (Boiler maker) Waste water Sewerage 1 7 Workshop Foreman (Bricklayer) Waste water Sewerage 1 7 Workshop Skilled worker 1: (Plumber) Waste water Sewerage 5 6 Workshop Skilled worker 1 (Boilermaker) Waste water Sewerage 1 6 Workshop Skilled worker 1: (Bricklayer) Waste water Sewerage 1 6 Workshop Skilled Worker 3: (Plumber) Waste water Sewerage 10 4 Workshop Heavy Duty Operator Waste water Sewerage 4 4 Workshop Senior clerical officer Waste water Sewerage 1 4 Workshop Heavy Vehicle driver Waste water Sewerage 3 4 Workshop Senior Operator Waste water Sewerage 24 4 Workshop Operator Waste water Sewerage 65 3 Workshop Plant Engineer Waste water In charge Sewage 1 10 Treatment works Senior Superintended Waste water Crowborough 1 9 Works Attendant Waste water Crowborough 5 6 Asst. Works Attendant Waste water Crowborough 5 5 Senior Operator Waste water Crowborough 52 4 Light Vehicle Driver Waste water Crowborough 2 4 Operator Waste water Crowborough 22 3 Gauff Ingenieure 14 Greater Harare Water and Sanitation Investment Plan Investment Plan Report Appendix 8 Job Title Department Activity Proposed Grade Number General Labourer Waste water Crowborough 12 1 Works Attendant Waste water Firle 10 6 Asst. Works Attendant Waste water Firle 10 5 Senior Operator Waste water Firle 105 4 Light Vehicle Driver Waste water Firle 4 4 Operator Waste water Firle 45 3 General Labourer Waste water Firle 25 1 Senior Superintended Waste water Farm 1 9 Works Attendant Waste water Farm 10 6 Asst. Works Attendant Waste water Farm 10 5 Senior Operator Waste water Farm 110 4 Light Vehicle Driver Waste water Farm 4 4 Operator Waste water Farm 50 3 General Labourer Waste water Farm 30 1 Snr/Principal Chemist Quality Chemistry Lab 1 9 Assurance Chief Chem Lab Technician Quality Chemistry Lab 1 7 Assurance Senior Lab technicians Quality Chemistry Lab 2 6 Assurance Lab Technicians Quality Chemistry Lab 5 5 Assurance Technician Assistants Quality Chemistry Lab 4 4 Assurance Handy men Quality Chemistry Lab 4 1 Assurance Microbiologist Quality Microbiology lab 1 9 Assurance Chief Microbio Lab Technician Quality Microbiology lab 1 7 Assurance Senior Lab technicians Quality Microbiology lab 2 6 Assurance Lab Technicians Quality Microbiology lab 4 5 Assurance Technician Assistants Quality Microbiology lab 4 4 Assurance Handy men Quality Microbiology lab 4 1 Assurance Planning Engineer Planning and Planning 1 10 Technical Services (P&TS) Snr/Principal Engineer (Civil) P&TS Planning 1 9 Snr/Principal Engineer (Mech) P&TS Planning 1 9 Snr/Principal Engineer (Elect) P&TS Planning 1 9 Chief Technician Engineer (Civil) P&TS Planning 1 7 Chief Technician Engineer (Mech) P&TS Planning 1 7 Gauff Ingenieure 15 Greater Harare Water and Sanitation Investment Plan Investment Plan Report Appendix 8 Job Title Department Activity Proposed Grade Number Chief Technician Engineer (Elect) P&TS Planning 1 7 Senior Technician Engineer (Civil) P&TS Planning 2 6 Senior Technician Engineer (Mech) P&TS Planning 2 6 Senior Technician Engineer (Elect) P&TS Planning 2 6 Technician Draughtsman (Civil) P&TS Planning 4 4 Technician Draughtsman (Mech) P&TS Planning 1 4 Technician Draughtsman (Elect) P&TS Planning 1 4 Technical Services Engineer P&TS Technical Services 1 10 Snr/Principal Engineer (TS) P&TS Technical Services 1 9 Technician (TS) P&TS Technical Services 1 4 Total 1933 Table A8.3: New Proposals for Epworth Town Council Semi-autonomous Water and Sewerage Company. (Company under Greater Harare Water after 2018 Job Title Department Activity Proposed Grade Number Branch Manager for Water and Overall 1 10 Water and Sewerage Sewerage semi- Management Services autonomous body Financial Operations Finance In charge of 1 9 Supervisor (Accountant) financial services Commercial Operations Commercial In charge of 1 9 Officer Operations commercial operations Technical Operations Technical In charge of 1 9 Officer Operations technical operations Water Operations Water In charge water 1 7 Supervisor supply Sewage Operations Sewerage Sewerage 1 7 Supervisor services Secretary and Administration Support 1 6 administrative assistant Billing Officer Commercial 1 6 Revenue collection officer Commercial 1 6 Payroll clerk and Time Administration 1 5 Keeper Assistant Accountant Finance 1 5 Meter reading supervisor / Commercial 1 5 Pipe fitter Customer Relations Commercial 1 5 Officer Cashier Finance 1 5 Meter readers / Pipe Commercial Meter reading / 6 4 fitters Pipe Fitting Gauff Ingenieure 16 Greater Harare Water and Sanitation Investment Plan Investment Plan Report Appendix 8 Plumbers Sewerage 3 4 Drivers Administration 3 3 Stores Clerk Administration 1 3 Assistant Plumbers / Sewerage 2 2 Attendants General Hands Sewerage 5 1 Total 33 Table A8.4: New Proposal for Norton Town Council Semi-Autonomous Water and Sewerage Company. (Company under Greater Harare Water 2018) Job Title Department Activity Proposed Grade Number Branch Manager Water and Water and Overall 1 10 Sewerage Services Sewerage Management semi- autonomous body Financial Operations Finance In charge of 1 9 Supervisor (Accountant) financial services Commercial Operations Commercial In charge of 1 9 Officer Operations commercial operations Technical Operations Technical In charge of 1 9 Officer Operations technical operations Water Purification Water In charge water 1 8 superintendent supply Sewage works Sewerage Sewerage 1 8 superintendent services Credit Controller Finance Revenue 1 8 collection Stores Controller / Buyer Finance Support 1 8 Systems Administrator Finance Billing 1 8 Secretary and Administration Support 1 6 administrative assistant Billing Officer Finance Billing 1 6 Revenue collection officer Finance Revenue 1 6 Accountant Finance Revenue 2 6 collection Computer Operator Finance Billing 1 6 Payroll clerk Administration Payroll 1 5 Plumbing Foreman / Pipe Water supervisor 1 5 fitter Sewerage Supervisor Sewage supervisor 1 5 Meter reading supervisor / Commercial supervisor 1 5 Pipe fitter Customer Relations Officer Commercial Support 1 5 Cashier Finance Support 1 5 Meter readers / Pipe fitters Commercial 13 4 Gauff Ingenieure 17 Greater Harare Water and Sanitation Investment Plan Investment Plan Report Appendix 8 Plumbers / Pipe fitters Water 2 4 Water Linesmen Water 8 4 Sewer Linesmen Sewage 14 4 Receptionist / Typist Administration Support 1 3 Drivers Administration 3 3 Stores Clerk Administration 1 3 Water Operators Water 1 3 Sewer Operators Sewage 17 3 Guards Administration Support 69 3 Assistant Plumbers / Sewerage 2 2 Attendants General Hands Sewerage 5 1 Total 157 Table A8.5: New Proposal for Ruwa Town Council Semi-Autonomous Water and Sewerage Company. (Company under Greater Harare Water 2018) Job Title Department Activity Proposed Grade Number Branch Manager Water and Water and Overall 1 10 Sewerage Services Sewerage Management semi- autonomous body Financial Operations Finance In charge of 1 9 Supervisor (Accountant) financial services Commercial Operations Officer Commercial In charge of 1 9 Operations commercial operations Technical Operations Officer Technical In charge of 1 9 Operations technical operations Water Works superintendent Water In charge water 1 8 supply Sewage works superintendent Sewerage Sewerage 1 8 services Water and Sewer Reticulation Water and 1 8 Superintended Sewage Environment Officer Garbage 1 8 collection Credit Controller Finance Revenue 1 8 collection Systems Administrator Finance Billing 1 8 Secretary and administrative Administration Support 1 6 assistant Billing Officer Finance Billing 1 6 Revenue collection officer Finance Revenue 1 6 Secretaries Technical and Support 2 5 Financial Stores Controller Finance 1 5 Gauff Ingenieure 18 Greater Harare Water and Sanitation Investment Plan Investment Plan Report Appendix 8 Payroll clerk Administration Payroll 1 5 Senior Plumber Sewage Sewage 1 5 Plumbing Foreman / Pipe fitter Water supervisor 1 5 Senior Water Works Operator Water 1 5 Senior Sewage Works Sewage supervisor 1 5 Operator Meter reading supervisor / Commercial supervisor 1 5 Pipe fitter Customer Relations Officer Commercial Support 1 5 Cashier Finance Support 2 5 Meter readers / Pipe fitters Commercial 11 4 Water Supervisor Water 1 4 Sewer Cleaning Supervisor Sewage 1 4 Drivers Administration 3 3 Water Works Operators Water 10 3 Sewer Works Operators Sewage 11 3 Water Linesmen Water 2 2 Sewer Linesmen Sewage 2 2 Assistant Plumbers / Sewerage 2 2 Attendants General Hands Support 14 1 Total 82 Table A8.6: New Proposal for Chitungwiza Town Council Semi-Autonomous Water and Sewerage Company. (Company under Greater Harare Water 2018) Job Title Department Activity Proposed Grade Number Branch Manager Water and Water and Overall 1 12 Sewerage Services Sewerage Management semi- autonomous body Financial Operations Finance In charge of 1 11 Supervisor (Accountant) financial services Commercial Operations Commercial In charge of 1 11 Manager Operations commercial operations Technical Operations Technical In charge of 1 11 Manager Operations technical operations Water Works Engineer Water In charge water 1 10 supply Sewage works Engineer Sewerage Sewerage 1 10 services Systems Administrator ICT Commercial 1 9 Professional Head Commercial Commercial 2 8 Water and Sewer Water and 2 7 Reticulation Superintended Sewage Gauff Ingenieure 19 Greater Harare Water and Sanitation Investment Plan Investment Plan Report Appendix 8 Job Title Department Activity Proposed Grade Number Accountant Finance Revenue 3 7 collection Secretary and Administration Support 1 6 administrative assistant Billing Officer Finance Billing 2 6 Revenue collection officer Finance Revenue 2 6 Customer Relations Officer Commercial Support 1 5 Secretaries Technical and Support 2 5 Financial Plumbing Foreman / Pipe Water supervisor 3 5 fitter Meter reading supervisor / Commercial supervisor 37 5 Pipe fitter / clerk Meter readers / Pipe Commercial 33 4 fitters/Fitter Water Supervisor/Foreman Water 3 4 Sewer Cleaning Sewage 37 4 Supervisor/Plumber Drivers Administration 3 3 Water Works Operators Water 7 3 Sewer Works Operators Sewage 9 3 Assistant Plumbers / Sewerage 20 2 Attendants Guards Support 4 2 General Hands Support 30 1 Total 208 Total Numbers for Greater Harare Water and Sewerage Company: • Harare Head Office and Harare Branch 1,933 • Epworth Branch 33 • Norton Branch 157 • Ruwa Branch 82 • Chitungwiza Branch 208 TOTAL 2,413 Gauff Ingenieure 20 Greater Harare Water and Sanitation Strategic Plan Investment Plan Report Greater Harare Water and Sanitation Investment Plan APPENDIX 9: COST ESTIMATES Gauff Ingenieure Greater Harare Water and Sanitation Strategic Plan Investment Plan Report Greater Harare Water and Sanitation Investment Plan APPENDIX 9: DETAILED INVESTMENT COST ESTIMATES Gauff Ingenieure Long Term Projects Medium Term Projects Greater Harare Water and Sanitation Investment Plan Covered under Chinese Exim Bank loan FS/FD Construction Covered under Zim-Fund Phase 1 FS/FD Construction Appendix 9-1: Detailed Investment Cost Estimates - HARARE Item Unit Medium Term (upto 2020) Long Term (upto 2030) 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Qty Rate [USD] Amount Qty Rate [USD] Amount [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] A. WATER DEMAND MANAGEMENT/NRW REDUCTION PROGRAMME 109,054,350 - - - - 23,904,070 23,904,070 23,904,070 23,904,070 15,271,195 263,875 1,847,125 12,327,125 12,327,125 12,327,125 12,327,125 5,608,898 4,025,649 5,608,898 A.1 Rehabilitation/replacement of treated water transmission network 12,313,800 - - - - 2,462,760 2,462,760 2,462,760 2,462,760 2,462,760 - - - - - - - - - i Replacement of pipes ND 150 (OD 160) PVC m 13,000 45 585,000 117,000 117,000 117,000 117,000 117,000 - - ND 200 (OD 225) PVC m 2,700 75 202,500 40,500 40,500 40,500 40,500 40,500 - - ND 225 (OD 280) PVC m 4,300 90 387,000 77,400 77,400 77,400 77,400 77,400 - - ND 250 (OD 280) PVC m 740 90 66,600 13,320 13,320 13,320 13,320 13,320 - - ND 300 (OD 315) PVC m 13,320 120 1,598,400 319,680 319,680 319,680 319,680 319,680 - - ND 375 (ND 400) PVC m 1,590 200 318,000 63,600 63,600 63,600 63,600 63,600 - - ND 400 DI m 530 200 106,000 21,200 21,200 21,200 21,200 21,200 - - ND 450 DI m 7,160 250 1,790,000 358,000 358,000 358,000 358,000 358,000 - - ND 525 (ND 500) DI m 2,210 300 663,000 132,600 132,600 132,600 132,600 132,600 - - ND 600 DI m 2,000 450 900,000 180,000 180,000 180,000 180,000 180,000 - - ND 750 DI m 6,000 700 4,200,000 840,000 840,000 840,000 840,000 840,000 - - - - ii Replacement of gate/butterfly valves - - ND 400 nos 3 4,000 12,000 2,400 2,400 2,400 2,400 2,400 - - ND 450 nos 10 5,700 57,000 11,400 11,400 11,400 11,400 11,400 - - ND 500 nos 2 7,000 14,000 2,800 2,800 2,800 2,800 2,800 - - ND 600 nos 2 11,000 22,000 4,400 4,400 4,400 4,400 4,400 - - ND 750 nos 4 16,000 64,000 12,800 12,800 12,800 12,800 12,800 - - ND 800 nos 1 20,300 20,300 4,060 4,060 4,060 4,060 4,060 - - ND 1000 nos 5 27,700 138,500 27,700 27,700 27,700 27,700 27,700 - - - - iii Replacement of bulk water meters: - - ND 375 nos 10 10,000 100,000 20,000 20,000 20,000 20,000 20,000 - - ND 400 nos 2 12,000 24,000 4,800 4,800 4,800 4,800 4,800 - - ND 450 nos 9 15,000 135,000 27,000 27,000 27,000 27,000 27,000 - - ND 525 (ND 500) nos 5 17,000 85,000 17,000 17,000 17,000 17,000 17,000 - - ND 600 nos 7 18,000 126,000 25,200 25,200 25,200 25,200 25,200 - - ND 700 nos 1 22,000 22,000 4,400 4,400 4,400 4,400 4,400 - - ND 750 nos 3 27,000 81,000 16,200 16,200 16,200 16,200 16,200 - - ND 800 nos 1 40,000 40,000 8,000 8,000 8,000 8,000 8,000 - - ND 975 nos 2 45,000 90,000 18,000 18,000 18,000 18,000 18,000 - - ND 1000 nos 1 84,000 84,000 16,800 16,800 16,800 16,800 16,800 - - ND 1300 nos 2 100,500 201,000 40,200 40,200 40,200 40,200 40,200 - - ND 1500 nos 1 116,000 116,000 23,200 23,200 23,200 23,200 23,200 - - iv Replacement of air valves nos 45 1,100 49,500 9,900 9,900 9,900 9,900 9,900 - - v Reconstruction of broken chambers and covers nos 80 200 16,000 3,200 3,200 3,200 3,200 3,200 - - A.2 Rehabilitation/replacement of water distribution network 92,240,550 - - - - 20,541,310 20,541,310 20,541,310 20,541,310 11,908,435 263,875 1,847,125 12,327,125 12,327,125 12,327,125 12,327,125 5,608,898 4,025,649 5,608,898 i Replacement of pipes ND 75 (OD 80) PVC m 8,250 22 181,500 36,300 36,300 36,300 36,300 36,300 - - ND 100 (OD 110) PVC m 28,380 30 851,400 170,280 170,280 170,280 170,280 170,280 - - ND 150 (OD 160) PVC m 26,620 45 1,197,900 239,580 239,580 239,580 239,580 239,580 - - ND 200 (OD 225) PVC m 1,000 75 75,000 15,000 15,000 15,000 15,000 15,000 - - ND 225 (OD 280) PVC m 1,100 90 99,000 19,800 19,800 19,800 19,800 19,800 - - ND 300 (OD 280) PVC m 15,070 120 1,808,400 361,680 361,680 361,680 361,680 361,680 - - ND 400 DI m 3,000 200 600,000 120,000 120,000 120,000 120,000 120,000 - - - - ii Replacement of air valves nos 76 800 60,800 12,160 12,160 12,160 12,160 12,160 - - iii Replacement of fire hydrants nos 152 200 30,400 6,080 6,080 6,080 6,080 6,080 - - - - iv Replacement of gate/butterfly valves - - ND 80 nos 10 200 2,000 400 400 400 400 400 - - ND 100 nos 45 250 11,250 2,250 2,250 2,250 2,250 2,250 - - ND 150 nos 30 450 13,500 2,700 2,700 2,700 2,700 2,700 - - ND 200 nos 10 800 8,000 1,600 1,600 1,600 1,600 1,600 - - ND 250 nos 5 1,500 7,500 1,500 1,500 1,500 1,500 1,500 - - ND 300 nos 12 2,000 24,000 4,800 4,800 4,800 4,800 4,800 - - ND 350 nos 5 3,200 16,000 3,200 3,200 3,200 3,200 3,200 - - ND 375 (ND 400) nos 5 4,000 20,000 4,000 4,000 4,000 4,000 4,000 - - v Replacement of pressure reducing valves: - - ND 50 nos 20 1,700 34,000 6,800 6,800 6,800 6,800 6,800 - - ND 80 nos 20 2,200 44,000 8,800 8,800 8,800 8,800 8,800 - - ND 100 nos 15 4,000 60,000 12,000 12,000 12,000 12,000 12,000 - - ND 150 nos 25 5,000 125,000 25,000 25,000 25,000 25,000 25,000 - - ND 200 nos 15 5,500 82,500 16,500 16,500 16,500 16,500 16,500 - - ND 250 nos 5 6,500 32,500 6,500 6,500 6,500 6,500 6,500 - - ND 300 nos 8 8,000 64,000 12,800 12,800 12,800 12,800 12,800 - - vi Replacement of bulk water meters: - - ND 50 nos 1 500 500 100 100 100 100 100 - - ND 75 nos 3 800 2,400 480 480 480 480 480 - - ND 100 nos 18 1,000 18,000 3,600 3,600 3,600 3,600 3,600 - - ND 150 nos 38 2,000 76,000 15,200 15,200 15,200 15,200 15,200 - - ND 200 nos 16 3,000 48,000 9,600 9,600 9,600 9,600 9,600 - - ND 225 (ND 250) nos 2 4,000 8,000 1,600 1,600 1,600 1,600 1,600 - - ND 300 nos 8 7,000 56,000 11,200 11,200 11,200 11,200 11,200 - - ND 325 (ND 300) nos 1 7,000 7,000 1,400 1,400 1,400 1,400 1,400 - - vii Replacement of non-return valves nos 100 1,000 100,000 20,000 20,000 20,000 20,000 20,000 - - viii Clean and service sluice valves Sum 1 2,000 2,000 400 400 400 400 400 - - ix Reconstruction of broken chambers and covers Sum 1 14,000 14,000 - - - - x Replacement of service connections - - a Domestic (ND 15) (OD 20) nos. 209,600 150 31,440,000 6,288,000 6,288,000 6,288,000 6,288,000 6,288,000 - - b Non-Domestic (ND 25) nos. 52,400 250 13,100,000 2,620,000 2,620,000 2,620,000 2,620,000 2,620,000 - - - - - xi Replacement of service water meters a Domestic (ND 15) nos. 209,600 150 31,440,000 - - - 7,860,000 7,860,000 7,860,000 7,860,000 1,458,256 208,322 1,458,256 9,318,256 9,318,256 9,318,256 9,318,256 4,428,078 3,178,144 4,428,078 b Non-Domestic (ND 25) nos. 52,400 200 10,480,000 - - - 2,620,000 2,620,000 2,620,000 2,620,000 388,868 55,553 388,868 3,008,868 3,008,868 3,008,868 3,008,868 1,180,821 847,505 1,180,821 - A.3 NRW Reduction programme 4,500,000 - - - 900,000 900,000 900,000 900,000 900,000 - - - - - - - - - D:\Projects\Zimbabwe\InvestmentPlans\WorldBank_GHWSIP_Project\CostEstimates\RealCostEstimates_No Inflation\Investment Programme - HARARE_Real 140522.xlsx 1 of 16 Long Term Projects Medium Term Projects Greater Harare Water and Sanitation Investment Plan Covered under Chinese Exim Bank loan FS/FD Construction Covered under Zim-Fund Phase 1 FS/FD Construction Appendix 9-1: Detailed Investment Cost Estimates - HARARE Item Unit Medium Term (upto 2020) Long Term (upto 2030) 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Qty Rate [USD] Amount Qty Rate [USD] Amount [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] i Network Mapping, Network investigations and repair/replacement programme Sum 1 3,000,000 3,000,000 600,000 600,000 600,000 600,000 600,000 ii Customer database cleanup and awareness campaigns Sum 1 1,500,000 1,500,000 300,000 300,000 300,000 300,000 300,000 B. WATER SUPPLY SERVICE IMPROVEMENTS 22,612,854 47,848,302 - - - 10,506,427 10,506,427 - - - - - - - 23,924,151 23,924,151 - - - B.1 Rehabilitation of MORTON JAFRAY WTW including source works 10,964,937 30,873,426 - - - 5,482,469 5,482,469 - - - - - - - 15,436,713 15,436,713 - - - i Rehabilitation of Lake Chivero Intake a Rehabilitation/Replacement of Periscope Lifting Mechanism nos 4 15,000 60,000 4 30,000 120,000 30,000 30,000 60,000 60,000 b Rehabilitation/Replacement of Butterfly Valves and Actuators , DN 1200 nos 31,200 - 4 102,625 410,500 - - 205,250 205,250 c Replacement of Desludging Pumps, DN 50 with lifting mechanism nos 12,000 - 12,000 - - - - - d Rehabilitation/Replacement of Penstock Gates, 3mx3m nos 2 8,000 16,000 2 30,000 60,000 8,000 8,000 30,000 30,000 e Replacement of Screens and liftin mechanism, 75 mm mesh, 1200 mm dia nos 12,000 - 4 12,000 48,000 - - 24,000 24,000 f Replacement/Rehabilitation of Transformer, 100 kVA nos 16,000 - 9,600 - - - - - g Replacement/Rehabilitation of LV Switchboard nos 12,000 - 1 7,200 7,200 - - 3,600 3,600 h Replacement of Small Power and Lighting sum 12,000 - 1 7,200 7,200 - - 3,600 3,600 i Rehabilitation/Rehabilitation of Intake Building sum 1 10,000 10,000 1 6,000 6,000 5,000 5,000 3,000 3,000 - - - - ii Rehabilitation of Lake Manyame Intake - - - - a Rehabilitation/Replacement of Periscope Lifting Mechanism nos 4 4,500 18,000 4 10,000 40,000 9,000 9,000 20,000 20,000 b Rehabilitation/Replacement of Butterfly Valves and Actuators , DN 1200 nos 4 15,000 60,000 4 102,625 410,500 30,000 30,000 205,250 205,250 c Replacement of Desludging Pump, Turbine Type, 10 kW nos 1 23,000 23,000 1 23,000 23,000 11,500 11,500 11,500 11,500 d Replacement of Forebay Pumps, Turbine Type, 10 kW nos 2 23,000 46,000 2 23,000 46,000 23,000 23,000 23,000 23,000 e Rehabilitation/Replacement of Penstock Gates nos 4 2,500 10,000 4 4,500 18,000 5,000 5,000 9,000 9,000 f Replacement/Rehabilitation of Screens and lifting mechanism, 75 mm mesh, 1200 mm dia nos 4 12,000 48,000 4 3,000 12,000 24,000 24,000 6,000 6,000 g Replacement/Service/Replacement of Transformer, 100 kVA nos 1 16,000 16,000 1 8,000 8,000 8,000 8,000 4,000 4,000 h Replacement of LV Switchboard nos 1 6,000 6,000 1 1,800 1,800 3,000 3,000 900 900 i Replacement of Small Power and Lighting sum 1 3,500 3,500 1 6,000 6,000 1,750 1,750 3,000 3,000 j Repairs/Repairs of Building and Security Fence sum 1 20,000 20,000 1 20,000 20,000 10,000 10,000 10,000 10,000 k Replacement of Desludging Pumps and Hoist, DN 150 in Shaft 5 nos 2 7,500 15,000 2 7,500 15,000 7,500 7,500 7,500 7,500 - - iii Raw water transmission and pumping - - a Replacement/Rehabilitation of Inflow from Lake Chivero Butterfly Valve with Actuator, DN 600 nos 33,808 - 1 10,000 10,000 - - 5,000 5,000 b Replacement/Rehabilitation of Inflow from Lake Chivero Butterfly Valve with Actuator, DN 1300 nos 106,010 - 1 15,000 15,000 - - 7,500 7,500 c Replacement/Rehabilitation of Inflow from Lake Chivero Butterfly Valve with Actuator, DN 1400 nos 110,610 - 1 20,000 20,000 - - 10,000 10,000 d Replacement/Rehabilitation of Raw Water Pumping Butterfly Valve with Actuator, DN 1400 nos 110,610 - 1 20,000 20,000 - - 10,000 10,000 e Replacement/Rehabilitation of Inflow from Lake Manyame Butterfly Valve with Actuator, DN 1800 nos 144,159 - 1 20,000 20,000 - - 10,000 10,000 f Replacement/Rehabilitation of Needle Valve, DN 1200 nos 150,822 - 2 150,822 301,644 - - 150,822 150,822 g Replacement/Replacement of Inflow Valve Actuator Control Switchboard nos 8,000 - 1 1,600 1,600 - - 800 800 h Replacement/Rehabilitationof Inflow Valve Chamber Small Power and Lighting sum 3,500 - 1 3,500 3,500 - - 1,750 1,750 iii Replacement/Rehabilitation of Riser Shaft Hoist, 7.5 t nos 20,000 - 1 20,000 20,000 - - 10,000 10,000 j Replacement of Butterfly Valve with Gear-Operated Handle to Clr Nr 07, DN 900 nos 65,001 - 1 20,000 20,000 - - 10,000 10,000 - - k Replacement of Raw Water Pumps, Q = 5,400, H = 60 m nos. 5 200,000 1,000,000 5 200,000 1,000,000 500,000 500,000 500,000 500,000 l Replacement of RW Water Pump Controls sum 1 20,000 20,000 1 20,000 20,000 10,000 10,000 10,000 10,000 m Replacement/Rehabilitation of Raw Water Pump Suction Gate Valves with Actuators, DN 700 nos. 5 12,000 60,000 5 12,000 60,000 30,000 30,000 30,000 30,000 n /Replacement of Raw Water Pump Delivery Gate Valves with Actuators, DN 700 nos. 5 12,000 60,000 5 12,000 60,000 30,000 30,000 30,000 30,000 o Replacement of Non-Return Valves, DN 700 nos. 5 20,000 100,000 5 20,000 100,000 50,000 50,000 50,000 50,000 p Replacement of Pressure Gauges nos. 10 2,000 20,000 10 2,000 20,000 10,000 10,000 10,000 10,000 q Installation/Replacement of Air Valves nos 5 3,572 17,861 5 3,572 17,861 8,930 8,930 8,930 8,930 r Replacement/Rehabilitation of Raw Water Pump 3.3 kV Starter Switchboard nos. 1 437,500 437,500 1 437,500 437,500 218,750 218,750 218,750 218,750 s Replacement/Rehabilitation of Raw Water Pump 3.3 kV Starter Consoles nos. 5 30,000 150,000 5 30,000 150,000 75,000 75,000 75,000 75,000 t Replacement/Rehabilitation of Raw Water Pump 3.3 kV Remote Starter Panels nos. 5 15,000 75,000 5 15,000 75,000 37,500 37,500 37,500 37,500 u Replacement/Rehabilitation of Raw Water Pump 380 V LV Switchboard nos. 1 16,000 16,000 1 16,000 16,000 8,000 8,000 8,000 8,000 v Replacement/Replacement of Small Power and Lighting sum 1 12,000 12,000 1 12,000 12,000 6,000 6,000 6,000 6,000 w Maintenance/Replacement overhead Wire Rope Hoist, 3 t nos. 2 6,000 12,000 2 6,000 12,000 6,000 6,000 6,000 6,000 x Replacement of Dewatering Pumps nos. 2 4,500 9,000 2 4,500 9,000 4,500 4,500 4,500 4,500 y Replacement of Ventilation Fan nos. 1 3,000 3,000 1 3,000 3,000 1,500 1,500 1,500 1,500 - - iv Chemical Preparation and Dosing Unit 1* - - a Replacement/Replacement of Alum Mixers nos 3,000 - 4 3,000 12,000 - - 6,000 6,000 b Replacement of Alum Dosing Pumps, Q = 1383 l/h; H = 3 bar nos 6,000 - 5 6,000 30,000 - - 15,000 15,000 c Replacement/Maintenance/Replacement of Lime Preparation Tanks, 2600 mm dia. nos 6,000 - 3 6,000 18,000 - - 9,000 9,000 d Replacement of Lime Mixers* nos 3,000 - 3 3,000 9,000 - - 4,500 4,500 e Replacement of Lime Dosing Pumps* nos 6,000 - 3 6,000 18,000 - - 9,000 9,000 f Replacement of PAC Mixers nos 3,000 - 2 3,000 6,000 - - 3,000 3,000 g Replacement of PAC Dosing Pumps nos 6,000 - 2 6,000 12,000 - - 6,000 6,000 h Replacement of Silica Mixers nos 3,000 - 6 3,000 18,000 - - 9,000 9,000 iv Replacement of Silica Dosing Pumps nos 6,000 - 2 6,000 12,000 - - 6,000 6,000 j Replacement of Chlorinator Unit (Post-chlorination), 20 kg/h* sum 20,000 - 1 20,000 20,000 - - 10,000 10,000 k Installation of new Chlorinator Unit (Pre-Chlorination), 20 kg/h sum 4,500 - 1 4,500 4,500 - - 2,250 2,250 l Installation/Rehabilitation of a new Sulphuric Acid Dosing Unit sum 24,000 - 1 24,000 24,000 - - 12,000 12,000 m Replacement of Small Power and Lighting sum 4,500 - 1 4,500 4,500 - - 2,250 2,250 n Replacement/Rehabilitation of Chemical LV Switchboards and MCCs sum 5,280 - 3 5,280 15,840 - - 7,920 7,920 - - v Chemical Preparation and Dosing Unit 2 and Unit 3* - - a Rehabilitation/Replacement of Alum Mixers nos 3,000 - 3 3,000 9,000 - - 4,500 4,500 b Rehabilitation/Replacement of Silica Mixer nos 3,000 - 1 3,000 3,000 - - 1,500 1,500 c Replacement of Alum Dosing Pumps, Q = 4383 l/h; H = 3 bar nos 6,000 - 7 6,000 42,000 - - 21,000 21,000 d Replacement of Alum Transfer Pumps nos 6,000 - 5 6,000 30,000 - - 15,000 15,000 e Replacement of Lime Mixers and Screw Conveyors nos 4,000 - 3 4,000 12,000 - - 6,000 6,000 f Replacement of Lime Dosing Pumps nos 6,000 - 4 6,000 24,000 - - 12,000 12,000 g Replacement of PAC Mixers nos 3,000 - 2 3,000 6,000 - - 3,000 3,000 h Replacement of PAC Dosing Pumps nos 6,000 - 2 6,000 12,000 - - 6,000 6,000 i Replacement of Silica Mixers nos 3,000 - 1 3,000 3,000 - - 1,500 1,500 j Replacement of Silica Dosing Pumps nos 6,000 - 2 6,000 12,000 - - 6,000 6,000 k Replacement of Granular Silica and Alum Mixers nos 4,000 - 4 4,000 16,000 - - 8,000 8,000 l Replacement of Silica and Alum Transfer Pumps nos 6,000 - 6 6,000 36,000 - - 18,000 18,000 m Replacement of Chlorinator Unit (Post-chlorination), 20 kg/h* sum 30,000 - 30,000 - - - - - n Installation of new Chlorinator Unit (Pre-Chlorination), 20 kg/h sum 13,500 - 1 13,500 13,500 - - 6,750 6,750 o Replacement/Rehabilitation the Sulphuric Acid Dosing Unit sum 24,000 - 1 24,000 24,000 - - 12,000 12,000 p Replacement of Small Power and Lighting sum 6,000 - 1 6,000 6,000 - - 3,000 3,000 q Replacement/Maintenance/Replacement of Chemical LV Switchboards and MCCs sum 30,000 - 1 30,000 30,000 - - 15,000 15,000 - - vi Rehabilitation of Unit 1 Clarifiers - - a Rehabilitation of Circular Clarifiers (nr 01 and nr 02)* nos 40,000 - 40,000 - - - - - b Rehabilitation of Accelerator Type of Circular Clarifier (nr 03)* nos 40,000 - 40,000 - - - - - c Rehabilitation of Vertical Flow Patterson Candy Clarifiers (nr 04, nr 05 & nr 06) nos 3 22,809 68,427 3 22,809 68,427 34,214 34,214 34,214 34,214 d Rehabilitation/Modification of Degremont Pulsator Type Clarifier (nr 07) nr 1 135,941 135,941 1 756,667 756,667 67,970 67,970 378,333 378,333 e Replacement/Maintenence/Replacement of Small Power and Lighting sum 1 4,500 4,500 1 4,500 4,500 2,250 2,250 2,250 2,250 - - D:\Projects\Zimbabwe\InvestmentPlans\WorldBank_GHWSIP_Project\CostEstimates\RealCostEstimates_No Inflation\Investment Programme - HARARE_Real 140522.xlsx 2 of 16 Long Term Projects Medium Term Projects Greater Harare Water and Sanitation Investment Plan Covered under Chinese Exim Bank loan FS/FD Construction Covered under Zim-Fund Phase 1 FS/FD Construction Appendix 9-1: Detailed Investment Cost Estimates - HARARE Item Unit Medium Term (upto 2020) Long Term (upto 2030) 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Qty Rate [USD] Amount Qty Rate [USD] Amount [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] vii Rehabilitation and Modification of Unit 2 and 3 Clarifiers - - a Rehabilitation/Modification of Unit 2 Degremont Type of Clarifier (nr 08)* no 12,394 - 1 2,270,000 2,270,000 - - 1,135,000 1,135,000 b Rehabilitation/Modification of Unit 2 Degremont Type of Clarifiers (nr 09 & nr 10) sum 2 12,394 24,789 1 2,270,000 2,270,000 12,394 12,394 1,135,000 1,135,000 c Rehabilitation/Modification of Unit 3 Degremont Type of Clarifiers (nr 11, nr 12 & nr 13) sum 3 12,394 37,183 1 2,270,000 2,270,000 18,591 18,591 1,135,000 1,135,000 d Replacement of Small Power and Lighting sum 1 3,000 3,000 1 10,000 10,000 1,500 1,500 5,000 5,000 - - - - viii Rehabilitation of Unit 1 Filters - - - - a Maintenance/Rehabilitation of the Patterson Candy Rapd Gravity Filters (7.6mx5.9mx2.7m dept) - 12 nr* nos 70,384 - 12 70,384 844,608 - - 422,304 422,304 b Rehabilitation of Degremont Filters (10.4mx4.9mx1.45m dept) nos 88,886 - 14 88,886 1,244,408 - - 622,204 622,204 c Replacement/Maintenance/Replacement of Backwash Pumps, Q = 450 m3/h; H =14 m nos 53,000 - 2 53,000 106,000 - - 53,000 53,000 d Replacement of BW Water Pump Controls sum 10,000 - 1 10,000 10,000 - - 5,000 5,000 e Replacement of Foot Valves, DN 300 nos. 2,500 - 2 2,500 5,000 - - 2,500 2,500 f Replacement of Delivery Gate Valves, DN 300 nos. 5,502 - 2 5,502 11,004 - - 5,502 5,502 g Replacement of Non-Return Valves, DN 300 nos. 20,000 - 2 20,000 40,000 - - 20,000 20,000 h Replacement of Pressure Gauges nos. 4 13,799 55,196 4 13,799 55,196 27,598 27,598 27,598 27,598 i Installation/Replacement of Air Valves nos 2 3,000 6,000 2 3,000 6,000 3,000 3,000 3,000 3,000 j Installation/Replacement of Overhead Electric Wire Rope Hoist, 5 t nos. 2 20,000 40,000 2 20,000 40,000 20,000 20,000 20,000 20,000 k Replacement of Air Scour Blowers, Q = 2,800 m3/h; Diff Press = 0.4 bar nos 25,000 - 2 25,000 50,000 - - 25,000 25,000 l Replacement of Delivery Gate Valves, DN 150 nos 2 1,309 2,618 2 1,309 2,618 1,309 1,309 1,309 1,309 m Replacement of Safety Valves nos 2 8,000 16,000 2 8,000 16,000 8,000 8,000 8,000 8,000 n Replacement of Pressure Gauges nos. 4 2,000 8,000 4 2,000 8,000 4,000 4,000 4,000 4,000 o Replacement of Small Power and Lighting sum 1 4,500 4,500 1 4,500 4,500 2,250 2,250 2,250 2,250 p Replacement of Backwash Switchboard nos 1 16,000 16,000 1 16,000 16,000 8,000 8,000 8,000 8,000 - - ix Rehabilitation of Unit 2 and Unit 3 Filters - - a Rehabilitation of Degremont Filters (17.5mx8.7mx2.5m dept) nos 36 140,180 5,046,492 36 140,180 5,046,492 2,523,246 2,523,246 2,523,246 2,523,246 b Replacement of Backwash Pumps and fittings, Q = 1080 m3/h; H =14 m nos 85,000 - 5 85,000 425,000 - - 212,500 212,500 c Rehabilitation of BW Water Pump Controls sum 6,000 - 1 6,000 6,000 - - 3,000 3,000 d Replacement of Suction Butterfly Valves, DN 300 nos. 3,631 - 5 3,631 18,157 - - 9,078 9,078 e Replacement of Delivery Gate Valves, DN 300 nos. 5,502 - 2 5,502 11,004 - - 5,502 5,502 f Replacement of Non-Return Valves, DN 300 nos. 20,000 - 2 20,000 40,000 - - 20,000 20,000 g Replacement of Pressure Gauges nos. 2,000 - 4 2,000 8,000 - - 4,000 4,000 h Installation/Replacement of Air Valves nos 1,737 - 2 1,737 3,473 - - 1,737 1,737 ix Installation/Rehabilitation of Overhead Electric Wire Rope Hoist, 5 t nos. 2 9,000 18,000 2 9,000 18,000 9,000 9,000 9,000 9,000 j Replacement/Replacement of Air Scour Blowers and fittings, Q = 3,050 m3/h; Diff Press = 0.4 bar nos 30,000 - 5 30,000 150,000 - - 75,000 75,000 k Replacement of Delivery Gate Valves, DN 200 nos 2,226 - 2 2,226 4,452 - - 2,226 2,226 l Replacement of Safety Valves nos 4,500 - 2 4,500 9,000 - - 4,500 4,500 m Replacement of Non-Return Valves, DN 200 nos. 20,000 - 2 20,000 40,000 - - 20,000 20,000 n Rehabilitate /Replacement of Air Compressors for Valve Actuators nos 20,000 - 3 20,000 60,000 - - 30,000 30,000 o Replacement/Replacement of Small Power and Lighting sum 6,000 - 1 6,000 6,000 - - 3,000 3,000 p Replacement/Rehabilitation of Filter Switchboards and MCCs nos 12,000 - 1 12,000 12,000 - - 6,000 6,000 - - x Rehabilitation/Replacement and Maintenance of HL Pumps: Unit 1 (Pump Nrs 1 - 3) - - a Replacement of HL Water Pumps, Q = 1125, H = 172 m* nos. 160,000 - 3 160,000 480,000 - - 240,000 240,000 b Installation/Replacement of HL Water Pump Controls sum 20,000 - 1 20,000 20,000 - - 10,000 10,000 c Rehabilitation of HL Water Pumps Gate Valves with Actuators, DN 600* nos. 30,734 - 3 30,734 92,203 - - 46,101 46,101 d Rehabilitation of HL Water Pump Delivery Gate Valves with Actuators, DN 450* nos. 15,367 - 3 15,367 46,101 - - 23,051 23,051 e Rehabilitation of Non-Return Valves, DN 450* nos. 17,388 - 3 17,388 52,164 - - 26,082 26,082 f Replacement of Pressure Gauges nos. 2,000 - 6 2,000 12,000 - - 6,000 6,000 g Installation/Replacement of Air Valves nos 2,000 - 2 2,000 4,000 - - 2,000 2,000 h Rehabilitation of HL Pump 3.3 kV Starter Switchboard* nos. 157,500 - 1 157,500 157,500 - - 78,750 78,750 i Rehabilitation of HL Pump 3.3 kV Starter Console* nos. 63,000 - 1 63,000 63,000 - - 31,500 31,500 j Replacement of HL Pump 3.3 kV Remote Starter Panels* nos. 12,000 - 3 12,000 36,000 - - 18,000 18,000 k Replacement of HL Water Pump 380 V LV Switchboard* nos. 21,000 - 1 21,000 21,000 - - 10,500 10,500 l Replacement of Small Power and Lighting sum 1 6,000 6,000 1 6,000 6,000 3,000 3,000 3,000 3,000 m Replacement/Rehabilitation overhead Wire Rope Hoist, 10 t nos. 1 3,000 3,000 1 3,000 3,000 1,500 1,500 1,500 1,500 n Maintenance/Replacement of Dewatering Pumps nos. 2 4,500 9,000 2 4,500 9,000 4,500 4,500 4,500 4,500 o Maintenance/Replacement of Ventilation Fans nos. 1 3,000 3,000 1 3,000 3,000 1,500 1,500 1,500 1,500 - - xi Rehabilitation/Replacement and Maintenance of HL Pumps: Unit 2 (Pump Nrs 4 - 6) - - - a Replacement of HL Water Pumps, Q = 2630, H = 145 m* nos. 180,000 - 3 180,000 540,000 - - 270,000 270,000 b Installation/Replacement of HL Water Pump Controls sum 20,000 - 1 20,000 20,000 - - 10,000 10,000 c Rehabilitation of HL Water Pumps Suction Gate Valves with Actuators, DN 600* nos. 30,734 - 3 30,734 92,203 - - 46,101 46,101 d Rehabilitation of HL Water Pump Delivery Gate Valves with Actuators, DN 450* nos. 15,367 - 3 15,367 46,101 - - 23,051 23,051 e Rehabilitation of Non-Return Valves, DN 600* nos. 17,388 - 3 17,388 52,164 - - 26,082 26,082 f Rehabilitation of Pressure Gauges nos. 2,000 - 6 2,000 12,000 - - 6,000 6,000 g Installation/Replacement of Air Valves nos 2,000 - 2 2,000 4,000 - - 2,000 2,000 h Replacement of HL Pump 3.3 kV Starter Switchboard* nos. 450,000 - 1 450,000 450,000 - - 225,000 225,000 i Replacement of HL Pump 3.3 kV Starter Console* nos. 36,000 - 1 36,000 36,000 - - 18,000 18,000 j Replacement of HL Pump 3.3 kV Remote Starter Panels* nos. 12,000 - 3 12,000 36,000 - - 18,000 18,000 k Replacement of HL Water Pump 380 V LV Switchboard nos. 14,400 - 1 14,400 14,400 - - 7,200 7,200 l Replacement of Small Power and Lighting sum 1 8,800 8,800 1 8,800 8,800 4,400 4,400 4,400 4,400 m Replacement/Rehabilitation overhead Wire Rope Hoist, 12.5 t nos. 1 9,000 9,000 1 9,000 9,000 4,500 4,500 4,500 4,500 n Replacement/Replacement of Dewatering Pumps nos. 2 4,500 9,000 2 4,500 9,000 4,500 4,500 4,500 4,500 o Replacement of Ventilation Fans nos. 1 3,000 3,000 1 3,000 3,000 1,500 1,500 1,500 1,500 - - xii Rehabilitation/Replacement and Maintenance of HL Pumps: Unit 3 (Pump Nrs 7 - 10: 2 Stage) - - a Replacement of HL Water Pumps, Q = 3161, H = 67 m/Q = 3161, H = 124 m* nos. 200,000 - 8 200,000 1,600,000 - - 800,000 800,000 b Installation/Rehabilitation of HL Water Pump Controls sum 20,000 - 1 20,000 20,000 - - 10,000 10,000 c Rehabilitation of HL Water Pumps Suction Butterfly Valves, DN 600* nos. 17,639 - 4 17,639 70,555 - - 35,278 35,278 d Rehabilitation of HL Water Pump Delivery Gate Valves with Actuators, DN 600* nos. 30,734 - 4 30,734 122,937 - - 61,469 61,469 e Rehabilitation of Non-Return Valves, DN 600* nos. 22,841 - 4 22,841 91,365 - - 45,683 45,683 f Replacement of Pressure Gauges nos. 2,000 - 16 2,000 32,000 - - 16,000 16,000 g Rehabilitation of Air Valves nos 2,000 - 2 2,000 4,000 - - 2,000 2,000 h Rehabilitation of HL Pump 3.3 kV Starter Switchboard* nos. 210,000 - 1 210,000 210,000 - - 105,000 105,000 i Replacement of HL Pump 3.3 kV Starter Console* nos. 21,000 - 8 21,000 168,000 - - 84,000 84,000 j Rehabilitation of HL Pump 3.3 kV Remote Starter Panels* nos. 12,000 - 4 12,000 48,000 - - 24,000 24,000 k Rehabilitation of HL Water Pump 380 V LV Switchboard nos. 9,600 - 1 9,600 9,600 - - 4,800 4,800 l Replacement of Small Power and Lighting sum 1 8,000 8,000 1 8,000 8,000 4,000 4,000 4,000 4,000 m Replacement overhead Wire Rope Hoist, 12.5 t nos. 1 12,000 12,000 1 12,000 12,000 6,000 6,000 6,000 6,000 n Replacement of Dewatering Pumps nos. 3 4,500 13,500 3 4,500 13,500 6,750 6,750 6,750 6,750 o Replacement of Ventilation Fans nos. 6 3,000 18,000 6 3,000 18,000 9,000 9,000 9,000 9,000 - - xiii Rehabilitation/Replacement of High Lift (HL) Pumps: Unit 4 (Pump Nrs 11 - 14: 2 Stage) Sum - - a Replacement of HL Water Pumps, Q = 3161, H = 67 m/Q = 3161, H = 124 m* nos. 200,000 - 8 200,000 1,600,000 - - 800,000 800,000 b Installation/Rehabilitation of HL Water Pump Controls sum 20,000 - 1 20,000 20,000 - - 10,000 10,000 c Rehabilitation of HL Water Pumps Suction Butterfly Valves, DN 600* nos. 1,800 - 4 1,800 7,200 - - 3,600 3,600 d Rehabilitation of HL Water Pump Delivery Gate Valves with Actuators, DN 600* nos. - - 4 - - - - - - e Rehabilitation of Non-Return Valves, DN 600* nos. - - 4 - - - - - - f Replacement of Pressure Gauges nos. 2,000 - 16 2,000 32,000 - - 16,000 16,000 g Replacement of Air Valves nos 2,000 - 2 2,000 4,000 - - 2,000 2,000 D:\Projects\Zimbabwe\InvestmentPlans\WorldBank_GHWSIP_Project\CostEstimates\RealCostEstimates_No Inflation\Investment Programme - HARARE_Real 140522.xlsx 3 of 16 Long Term Projects Medium Term Projects Greater Harare Water and Sanitation Investment Plan Covered under Chinese Exim Bank loan FS/FD Construction Covered under Zim-Fund Phase 1 FS/FD Construction Appendix 9-1: Detailed Investment Cost Estimates - HARARE Item Unit Medium Term (upto 2020) Long Term (upto 2030) 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Qty Rate [USD] Amount Qty Rate [USD] Amount [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] h Rehabilitation of HL Pump 3.3 kV Starter Switchboard* nos. 144,000 - 1 144,000 144,000 - - 72,000 72,000 i Replacement of HL Pump 3.3 kV Starter Console* nos. - - 8 - - - - - - j Rehabilitation of HL Pump 3.3 kV Remote Starter Panels* nos. - - 4 - - - - - - k Rehabilitation of HL Water Pump 380 V LV Switchboard nos. 96,000 - 1 96,000 96,000 - - 48,000 48,000 l Replacement of Small Power and Lighting sum 1 8,000 8,000 1 8,000 8,000 4,000 4,000 4,000 4,000 m Replacement/Rehabilitation overhead Wire Rope Hoist, 12.5 t nos. 1 12,000 12,000 1 12,000 12,000 6,000 6,000 6,000 6,000 n Replacement of Dewatering Pumps nos. 3 4,500 13,500 3 4,500 13,500 6,750 6,750 6,750 6,750 o Replacement of Ventilation Fans nos. 6 3,000 18,000 6 3,000 18,000 9,000 9,000 9,000 9,000 - - xiv Clear water valves, flowmeters and level gauges - - a Replacement of Gate Valve, DN 1000 on Old DN 1300 Transmission Line nos 150,822 - 1 150,822 150,822 - - 75,411 75,411 b Replacement of Gate Valve, DN 1000 on New DN 1300 Transmission Line nos 150,822 - 1 150,822 150,822 - - 75,411 75,411 c Replacement of Gate Valve, DN 1000 on DN 975 Distribution Line nos 150,822 - 1 150,822 150,822 - - 75,411 75,411 d Replacement of Gate Valve, DN 750 on DN 750 Distribution Line nos 76,000 - 1 76,000 76,000 - - 38,000 38,000 e Replacement of Gate Valve, DN 1000 on DN 1300 Interconnection Line nos 150,822 - 1 150,822 150,822 - - 75,411 75,411 f Replacement of Flowmeter on Raw Water Pipe from L. Chivero to Mix Ch., DN 1400 (Unit 1) nos 51,237 - 1 51,237 51,237 - - 25,618 25,618 g Replacement of Flowmeter on Raw Water Pipe from L. Chivero to Clr Nr 07, DN 900 (Unit 1) nos 21,919 - 1 21,919 21,919 - - 10,959 10,959 h Replacement of Flowmeter on Backwash Pipe to Patterson Candy Filters, DN 200 (Unit 1) nos 3,000 - 1 3,000 3,000 - - 1,500 1,500 i Replacement of Flowmeter on Backwash Pipe to Degremont Filters, DN 300 (Unit 1) nos 7,000 - 1 7,000 7,000 - - 3,500 3,500 j Replacement of Flowmeter on Raw Water Main Pipe from L. Manyame, DN 2200 (Units 2&3) nos 116,820 - 1 116,820 116,820 - - 58,410 58,410 k Replacement of Flowmeter on Raw Water Main Pipe from L. Chivero, DN 1300 (Units 2&3) nos 34,878 - 1 34,878 34,878 - - 17,439 17,439 l Replacement of Flowmeter on Backwash Pipe to Unit 2 Filters, DN 400 ((Units 2&3) nos 8,650 - 1 8,650 8,650 - - 4,325 4,325 m Replacement of Flowmeter on Backwash Pipe to Unit 3 Filters, DN 400 ((Units 2&3) nos 8,650 - 1 8,650 8,650 - - 4,325 4,325 n Replacement of Flowmeter on Clear Water Transmission Lines, DN 1300 (Units 2&3) nos 34,878 - 1 34,878 34,878 - - 17,439 17,439 o Replacement of Flowmeter on Clear Water Distribution Line, DN 750 (Units 2&3) nos 17,015 - 1 17,015 17,015 - - 8,508 8,508 p Replacement of Flowmeter on Clear Water Distribution Line, DN 700 (Units 2&3) nos 17,015 - 1 17,015 17,015 - - 8,508 8,508 q Replacement of Level Gauges on Clear Water Tanks sum 40,000 - 1 40,000 40,000 - - 20,000 20,000 - - xv Rehabilitation of the Washwater Recovery Plant - - a Rehabilitation of Secondary Clarifier nos 1 40,000 40,000 1 40,000 40,000 20,000 20,000 20,000 20,000 b Replacement of Turbine Pumps, Q = 1,800 m3/h, H = 18 m nos. 5 48,000 240,000 5 48,000 240,000 120,000 120,000 120,000 120,000 c Replacement of Raw Water Pump Delivery Gate Valves, DN 500 nos. 5 11,465 57,325 5 11,465 57,325 28,662 28,662 28,662 28,662 d Replacement of Non-Return Valves, DN 500 nos. 5 19,061 95,306 5 19,061 95,306 47,653 47,653 47,653 47,653 e Replacement of Pressure Gauges nos. 5 2,000 10,000 5 2,000 10,000 5,000 5,000 5,000 5,000 f Replacementn of Raw Water Pump 380 V LV Switchboard nos. 1 12,000 12,000 1 12,000 12,000 6,000 6,000 6,000 6,000 g Replacement of Small Power and Lighting sum 1 3,000 3,000 1 3,000 3,000 1,500 1,500 1,500 1,500 h Replacement overhead Wire Rope Hoist, 7.5 t nos. 2 10,000 20,000 2 10,000 20,000 10,000 10,000 10,000 10,000 i Replacement of Dewatering Pumps nos. 2 4,500 9,000 2 4,500 9,000 4,500 4,500 4,500 4,500 j Replacement of Alum Dosing System sum 1 15,000 15,000 1 15,000 15,000 7,500 7,500 7,500 7,500 k Replacement of the Farm Irrigation System sum 1 60,000 60,000 1 60,000 60,000 30,000 30,000 30,000 30,000 - - xvi Replacement/Rehabilitation of Transformers - - a Replacement of Transformer for the RW Pump Station: 4 MVA, 33/3.3 kV nos. 120,000 - 120,000 - - - - - b Rehabilitation/Replacement of Transformer for the RW Pump Station: 150 kVA, 3.3/.40 kV nos. 18,000 - 18,000 - - - - - c Rehabilitation of Transformer for HL Pump Station 01: 1 MVA, 33/3.3 kV nos. 1 20,000 20,000 1 20,000 20,000 10,000 10,000 10,000 10,000 d Replacement of Transformer for the HL Pump Station 01: 100 kVA, 3.3/.40 kV nos. 2 15,000 30,000 2 15,000 30,000 15,000 15,000 15,000 15,000 e Replacement of Transformer for the HL Pump Station 01: 200 kVA, 3.3/.40 kV nos. 1 20,000 20,000 1 20,000 20,000 10,000 10,000 10,000 10,000 f Replacement of Transformer for the HL Pump Stations 02 & 03: 6.3 MVA, 33/3.3 kV nos. 4 180,000 720,000 4 180,000 720,000 360,000 360,000 360,000 360,000 g Replacement of Transformer for the HL Pump Station 02: 1600 kVA, 3.3/.40 kV nos. 2 60,000 120,000 2 60,000 120,000 60,000 60,000 60,000 60,000 h Replacement of Transformer for the Waste Water Stations: 2 MVA, 33/3.3 kV nos. 1 100,000 100,000 1 100,000 100,000 50,000 50,000 50,000 50,000 - - xvii Miscellaneous - - a Security lights and fence Sum 1 80,000 80,000 1 80,000 80,000 40,000 40,000 40,000 40,000 b Standby generators Sum 1 63,000 63,000 1 63,000 63,000 31,500 31,500 31,500 31,500 c Rehabilitation of buildings and roads Sum 1 500,000 500,000 1 500,000 500,000 250,000 250,000 250,000 250,000 d Replacement of boats Sum 1 21,000 21,000 1 21,000 21,000 10,500 10,500 10,500 10,500 e Replacement of vehicles, tractors and plant Sum 1 600,000 600,000 1 600,000 600,000 300,000 300,000 300,000 300,000 f Laboratory equipment Sum 1 20,000 20,000 1 20,000 20,000 10,000 10,000 10,000 10,000 g SCADA and Radio communication systems Sum 1 125,000 125,000 1 125,000 125,000 62,500 62,500 62,500 62,500 - B.2 Rehabilitation of PE WTW including source works 3,012,058 6,779,552 - - - 1,506,029 1,506,029 - - - - - - - 3,389,776 3,389,776 - - - i Rehabilitation of Dam Intake - - - - a Replacement of Intake Gate Valves, DN 1000 nos 4 30,000 120,000 4 30,000 120,000 60,000 60,000 60,000 60,000 b Rehabilitation/Maintennce Replacement of Butterfly Valves and Actuators , DN 1200 nos 4 15,000 60,000 4 15,000 60,000 30,000 30,000 30,000 30,000 c Replacement/Maintenance/Replacement of Desludging Pumps, DN 50 with lifting mechanism nos 2 3,500 7,000 2 3,500 7,000 3,500 3,500 3,500 3,500 d Replacement of Screens and liftin mechanism, 75 mm mesh, 1200 mm dia nos 4 2,000 8,000 4 2,000 8,000 4,000 4,000 4,000 4,000 e Replacement/Maintenance/Rehabilitation of Transformer, 100 kVA nos 1 15,000 15,000 1 15,000 15,000 7,500 7,500 7,500 7,500 f Replacement/Maintenence of LV Switchboard nos 1 3,600 3,600 1 3,600 3,600 1,800 1,800 1,800 1,800 g Replacement/Maintenance/Replacement of Small Power and Lighting sum 1 3,500 3,500 1 3,500 3,500 1,750 1,750 1,750 1,750 - - - - ii Raw Water Pumps, Fittings and MV Switchboards and MCCs - - - - a Replacement of Raw Water Pumps, Q = 2700, H = 24 m* nos. 150,000 - 4 150,000 600,000 - - 300,000 300,000 b Replacement of RW Water Pump Controls sum 1 20,000 20,000 1 20,000 20,000 10,000 10,000 10,000 10,000 c Replacement of Raw Water Pump Suction Butterfly Valves with Actuators, DN 500* nos. 21,975 - 4 21,975 87,898 - - 43,949 43,949 d Replacement of Raw Water Pump Delivery Butterfly Valves with Actuators, DN 500* nos. 21,975 - 4 21,975 87,898 - - 43,949 43,949 e Replacement of Non-Return Valves, DN 500 nos. 4 20,000 80,000 4 20,000 80,000 40,000 40,000 40,000 40,000 f Replacement of Pressure Gauges nos. 8 2,000 16,000 8 2,000 16,000 8,000 8,000 8,000 8,000 g Installation of Air Valves nos 4 3,000 12,000 4 3,000 12,000 6,000 6,000 6,000 6,000 h Replacement/Rehabilitation of Raw Water Pump 3.3 kV Starter Feeder Switchboard nos. 1 210,000 210,000 1 210,000 210,000 105,000 105,000 105,000 105,000 ii Replacement/Rehabilitation of Raw Water Pump 3.3 kV Starter Consoles nos. 4 21,000 84,000 4 21,000 84,000 42,000 42,000 42,000 42,000 j Replacement of Raw Water Pump 3.3 kV Remote Starter Panels nos. 4 20,000 80,000 4 20,000 80,000 40,000 40,000 40,000 40,000 k Replacement of Raw Water Pump 380 V LV Switchboard nos. 1 16,000 16,000 1 16,000 16,000 8,000 8,000 8,000 8,000 l Replacement of Small Power and Lighting sum 1 6,000 6,000 1 6,000 6,000 3,000 3,000 3,000 3,000 m Maintenance overhead Wire Rope Hoist, 7.5 t nos. 2 20,000 40,000 2 20,000 40,000 20,000 20,000 20,000 20,000 n Replacement of Dewatering Pumps nos. 2 4,500 9,000 2 4,500 9,000 4,500 4,500 4,500 4,500 o Replacement of Ventilation Fan nos. 1 6,000 6,000 1 6,000 6,000 3,000 3,000 3,000 3,000 - - iii Chemical preparation and dosing plant - - a Replacement of Alum Mixers nos 3 3,000 9,000 3 3,000 9,000 4,500 4,500 4,500 4,500 b Replacement of Alum Dosing Pumps, 0 - 45 l/min nos 3 6,000 18,000 2 6,000 12,000 9,000 9,000 6,000 6,000 c Replacement of Air Agitation System for Alum sum 1 12,000 12,000 1 12,000 12,000 6,000 6,000 6,000 6,000 d Replacement of Lime Mixers, 0 - 45 l/min nos 3 3,000 9,000 2 3,000 6,000 4,500 4,500 3,000 3,000 e Replacement of Lime Dosing Pumps nos 3 6,000 18,000 3 6,000 18,000 9,000 9,000 9,000 9,000 f Replacement of PAC Plant sum 1 25,000 25,000 1 25,000 25,000 12,500 12,500 12,500 12,500 g Replacement of Silica Mixers nos 1 3,000 3,000 1 3,000 3,000 1,500 1,500 1,500 1,500 h Replacement of Silica Dosing Pumps nos 3 6,000 18,000 2 6,000 12,000 9,000 9,000 6,000 6,000 i Replacement of Chlorinator Unit (Post-chlorination), 20 kg/h sum 1 30,000 30,000 1 30,000 30,000 15,000 15,000 15,000 15,000 j Replacement of Chlorination Unit (Pre-Chlorination) sum 1 30,000 30,000 1 30,000 30,000 15,000 15,000 15,000 15,000 k Replacement of Small Power and Lighting sum 1 3,500 3,500 1 3,500 3,500 1,750 1,750 1,750 1,750 l Replacement of Chemical LV Switchboards and MCC nos 1 20,000 20,000 1 20,000 20,000 10,000 10,000 10,000 10,000 D:\Projects\Zimbabwe\InvestmentPlans\WorldBank_GHWSIP_Project\CostEstimates\RealCostEstimates_No Inflation\Investment Programme - HARARE_Real 140522.xlsx 4 of 16 Long Term Projects Medium Term Projects Greater Harare Water and Sanitation Investment Plan Covered under Chinese Exim Bank loan FS/FD Construction Covered under Zim-Fund Phase 1 FS/FD Construction Appendix 9-1: Detailed Investment Cost Estimates - HARARE Item Unit Medium Term (upto 2020) Long Term (upto 2030) 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Qty Rate [USD] Amount Qty Rate [USD] Amount [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] - - iv Vertical flow clarifiers (LxWxD: 18m x 9m x 9m) - - a Replacement of Decanting Troughs/Maintenance/Rehabilitation of Vertical Flow Clarifiers* nos 22,050 - 28 22,050 617,400 - - 308,700 308,700 b Extension of the Under-Sized Clarifier nos 291,600 - 1 291,600 291,600 - - 145,800 145,800 c Replacement/Maintenance/Replacement of Small Power and Lighting sum 1 3,500 3,500 1 3,500 3,500 1,750 1,750 1,750 1,750 - - v Rapid Gravity Sand Filters - - a Rehabilitation of Degremont Filters* nos 34,146 - 16 34,146 546,336 - - 273,168 273,168 b Replacement of Backwash Pumps, Q = 425 m3/h; H =15 m (3 nr)* nos 54,000 - 3 54,000 162,000 - - 81,000 81,000 c Replacement/Rehabilitation of BW Water Pump Controls sum 1 10,000 10,000 1 10,000 10,000 5,000 5,000 5,000 5,000 d Replacement/Rehabilitation of Suction Gate Valves, DN 250* nos. 1,500 - 3 1,500 4,500 - - 2,250 2,250 e Replacement/Rehabilitation of Delivery Gate Valves, DN 200* nos. 2,000 - 3 2,000 6,000 - - 3,000 3,000 f Replacement/Rehabilitation of Non-Return Valves, DN 200* nos. 20,000 - 3 20,000 60,000 - - 30,000 30,000 g Replacement/Replacement of Pressure Gauges nos. 6 2,000 12,000 6 2,000 12,000 6,000 6,000 6,000 6,000 h Installation/Replacement of Air Valves nos 3 3,000 9,000 3 3,000 9,000 4,500 4,500 4,500 4,500 i Installation/Rehabilitation of Overhead Electric Wire Rope Hoist, 3 t nos. 1 6,000 6,000 1 6,000 6,000 3,000 3,000 3,000 3,000 j Replacement/Rehabilitation of Air Scour Blowers and fittings, Q = 3,179 m3/h; Diff Press = 1.0 bar nos 2 4,000 8,000 2 4,000 8,000 4,000 4,000 4,000 4,000 k Replacement/Rehabilitation of Delivery Gate Valves, DN 200 nos 2 1,500 3,000 2 1,500 3,000 1,500 1,500 1,500 1,500 l Replacement/Replacement of Safety Valves nos 2 2,500 5,000 2 2,500 5,000 2,500 2,500 2,500 2,500 m Replacement/Replacement of Small Power and Lighting sum 1 3,500 3,500 1 3,500 3,500 1,750 1,750 1,750 1,750 n Replacement/Replacement of the BW Switchboard nos 1 20,000 20,000 1 20,000 20,000 10,000 10,000 10,000 10,000 - - vi Rehabilitation/Replacement High Lift Pumps (Pump Nrs 1 - 3)* - - a Replacement (1 nr)/Maintenance/Replacement of HL Water Pumps, Q = 1125, H = 172 m* nos. 160,000 - 4 160,000 640,000 - - 320,000 320,000 b Installation/Maintenance/Rehabilitation of HL Water Pump Controls sum 4 12,000 48,000 4 12,000 48,000 24,000 24,000 24,000 24,000 c Maintenance/Replacement of HL Water Pumps Suction Gate Valves with Actuators, DN 600* nos. 15,000 - 4 15,000 60,000 - - 30,000 30,000 d Maintenance/Replacement of HL Water Pump Delivery Gate Valves with Actuators, DN 500* nos. 12,000 - 4 12,000 48,000 - - 24,000 24,000 e Maintenance/Replacement of Non-Return Valves, DN 500* nos. 45,000 - 4 45,000 180,000 - - 90,000 90,000 f Maintenance/Replacement of Pressure Gauges nos. 4 2,000 8,000 4 2,000 8,000 4,000 4,000 4,000 4,000 g Installation/Maintenance/Replacement of Air Valves nos 4 3,000 12,000 4 3,000 12,000 6,000 6,000 6,000 6,000 h Maintenance/Rehabilitation of HL Pump 3.3 kV Starter Feeder Switchboard* nos. - 1 210,000 210,000 - - 105,000 105,000 i Maintenance/Replacement of HL Pump 3.3 kV Starter Console* nos. 21,000 - 4 21,000 84,000 - - 42,000 42,000 j Maintenance/Replacement of HL Pump 3.3 kV Remote Starter Panels* nos. 12,000 - 4 12,000 48,000 - - 24,000 24,000 k Maintenance/Rehabilitation of HL Water Pump 380 V LV Switchboard* nos. 9,600 - 1 9,600 9,600 - - 4,800 4,800 l Replacement/Maintenance/Replacement of Small Power and Lighting sum 1 8,000 8,000 1 8,000 8,000 4,000 4,000 4,000 4,000 m Maintenance/Replacement/Rehabilitation overhead Wire Rope Hoist, 10 t nos. 1 9,000 9,000 1 9,000 9,000 4,500 4,500 4,500 4,500 n Replacement/Maintenance/Replacement of Dewatering Pumps nos. 2 4,500 9,000 2 4,500 9,000 4,500 4,500 4,500 4,500 o Replacement/Maintenance/Replacement of Ventilation Fans nos. 1 3,000 3,000 1 3,000 3,000 1,500 1,500 1,500 1,500 - - - - vii Clear water valves, flowmeters and level gauges - - - - a Replacement/Rehabilitation of Valves Sum 1 225,000 225,000 1 225,000 225,000 112,500 112,500 112,500 112,500 b Replacement/Rehabilitation of Flowmeters Sum 1 85,000 85,000 1 85,000 85,000 42,500 42,500 42,500 42,500 c Replacement/Rehabilitation of Level Gauges Sum 1 60,000 60,000 1 60,000 60,000 30,000 30,000 30,000 30,000 - - - - viii Sludge pump house - - - - a Replacement of Sludge Pumps, Q = 350 m3/h, H = 40 m nos. 3 55,000 165,000 3 55,000 165,000 82,500 82,500 82,500 82,500 b Replacement/Rehabilitation of Sludge Pump Suction Gate Valves, DN 300 nos. 3 5,502 16,506 5 5,502 27,510 8,253 8,253 13,755 13,755 c Replacement of Sludge Water Pump Delivery Gate Valves, DN 250 nos. 3 4,064 12,193 5 4,064 20,321 6,096 6,096 10,161 10,161 d Replacement of Non-Return Valves, DN 250 nos. 3 11,065 33,195 5 11,065 55,325 16,597 16,597 27,662 27,662 e Replacement of Pressure Gauges nos. 6 2,000 12,000 5 2,000 10,000 6,000 6,000 5,000 5,000 f Replacement of Sludge Pump 380 V Incomer Switchboard nos. 1 8,000 8,000 1 8,000 8,000 4,000 4,000 4,000 4,000 g Replacement of Sludge Pump 380 V LV Switchboard and MCC nos. 1 12,000 12,000 1 12,000 12,000 6,000 6,000 6,000 6,000 h Replacement of Small Power and Lighting sum 1 6,000 6,000 1 6,000 6,000 3,000 3,000 3,000 3,000 i Replacement overhead Wire Rope Hoist, 3 t nos. 1 10,000 10,000 1 10,000 10,000 5,000 5,000 5,000 5,000 j Replacement of Dewatering Pumps nos. 2 4,500 9,000 2 4,500 9,000 4,500 4,500 4,500 4,500 k Replacement of Screen, DN 400 nos. 1 4,500 4,500 1 4,500 4,500 2,250 2,250 2,250 2,250 l Replacement of the Main Valve , DN 250 nos. 1 4,064 4,064 1 4,064 4,064 2,032 2,032 2,032 2,032 - - - - - x Miscellaneous - - - - a Rehabilitation/Replacement of transformers Sum 1 375,000 375,000 1 375,000 375,000 187,500 187,500 187,500 187,500 b Rehabilitation/Replacement of security lights and fence Sum 1 30,000 30,000 1 30,000 30,000 15,000 15,000 15,000 15,000 c Replacement/Replacement of Existing Generator, 87 kVA Sum 1 25,000 25,000 1 25,000 25,000 12,500 12,500 12,500 12,500 d Maintenance/Rehabilitation of Office and Workshop Buildings Incl. Electrical and Mechanical Works Sum 1 45,000 45,000 1 45,000 45,000 22,500 22,500 22,500 22,500 e Repaving/Rehabilitation of Compound Roads Sum 1 120,000 120,000 1 120,000 120,000 60,000 60,000 60,000 60,000 f Supply and Delivery/Replacement of Boat Sum 1 21,000 21,000 1 21,000 21,000 10,500 10,500 10,500 10,500 g Supply and Delivery/Replacement of operational Vehicles Sum 1 225,000 225,000 1 225,000 225,000 112,500 112,500 112,500 112,500 h Supply and Delivery/Replacement of Tractors and Plant Sum 1 175,000 175,000 1 175,000 175,000 87,500 87,500 87,500 87,500 i Supply and Delivery/Replacement of Laboratory Equipment Sum 1 40,000 40,000 1 40,000 40,000 20,000 20,000 20,000 20,000 j Supply and Delivery/Replacement of SCADA and Radio Communication Systems Sum 1 125,000 125,000 1 125,000 125,000 62,500 62,500 62,500 62,500 B.3 Rehabilitation of Warren Control station 2,343,456 8,658,409 - - - 1,171,728 1,171,728 - - - - - - - 4,329,205 4,329,205 - - - i Chemical preparation and dosing plant - - - a Rehabilitation/Replacement of Chlorination Unit , 20 kg/h sum 1 30,000 30,000 1 30,000 30,000 15,000 15,000 15,000 15,000 b Rehabilitation/Replacement of Ammonia Unit , 5 kg/h sum 1 20,000 20,000 1 20,000 20,000 10,000 10,000 10,000 10,000 c Replacement of Small Power and Lighting sum 1 3,500 3,500 1 3,500 3,500 1,750 1,750 1,750 1,750 d Replacement of Lifting Hoist and Adapters, 3 t nos 3 3,500 10,500 3 3,500 10,500 5,250 5,250 5,250 5,250 e Replacement of Chemical LV Switchboards and MCC nos 1 8,000 8,000 1 8,000 8,000 4,000 4,000 4,000 4,000 f Replacement of Chlorination Chamber nos 1 6,500 6,500 1 6,500 6,500 3,250 3,250 3,250 3,250 - - - - ii Replacement/Rehabilitation of High Lift Booster Pumps (Pump Nrs 1 - 14) - - - - a Replacement of HL Water Pumps, Q = 2520, H = 120 m* nos. 14 180,000 2,520,000 - - 1,260,000 1,260,000 b Replacement of HL Water Pump Controls sum 1 20,000 20,000 - - 10,000 10,000 c Replacement of HL Water Pumps Suction Gate Valves, DN 600 nos. 14 26,725 374,156 - - 187,078 187,078 d Replacement of HL Water Pump Delivery Gate Valves with Actuators, DN 600 nos. 14 51,224 717,133 - - 358,566 358,566 e Replacement of HL Water Pump NRVs, DN 600 nos. 14 38,069 532,963 - - 266,482 266,482 f Replacement of Pressure Gauges nos. 28 2,000 56,000 - - 28,000 28,000 g Installation/Replacement of Air Valves, DN 100 nos 14 2,000 28,000 - - 14,000 14,000 h Rehabilitation/Replacement of HL Pump 3.3 kV Starter Feeder Switchboard nos. 1 1,147,701 1,147,701 - - 573,850 573,850 i Replacement of HL Pump 3.3 kV Starter Console nos. 14 35,000 490,000 - - 245,000 245,000 j Installation of HL Pump 3.3 kV Remote Starter Panels nos. 14 20,000 280,000 - - 140,000 140,000 k Replacement of HL Water Pump 380 V LV Switchboard nos. 1 56,000 56,000 - - 28,000 28,000 l Replacement of Small Power and Lighting sum 1 20,000 20,000 - - 10,000 10,000 m Replacement overhead Wire Rope Hoist, 12.5 t nos. 2 20,000 40,000 - - 20,000 20,000 n Replacement of Dewatering Pumps nos. 2 4,500 9,000 - - 4,500 4,500 o Replacement of Ventilation Fans nos. 8 3,000 24,000 - - 12,000 12,000 - - - - iii Clear water valves, flowmeters and level gauges - - - - a Replacement of Butterfly Valve, DN 1500 nos - - - - b Replacement of Butterfly Valve with Actuators, DN 1500 nos - - - - c Replacement of Butterfly Valve, DN 1400 nos - - - - D:\Projects\Zimbabwe\InvestmentPlans\WorldBank_GHWSIP_Project\CostEstimates\RealCostEstimates_No Inflation\Investment Programme - HARARE_Real 140522.xlsx 5 of 16 Long Term Projects Medium Term Projects Greater Harare Water and Sanitation Investment Plan Covered under Chinese Exim Bank loan FS/FD Construction Covered under Zim-Fund Phase 1 FS/FD Construction Appendix 9-1: Detailed Investment Cost Estimates - HARARE Item Unit Medium Term (upto 2020) Long Term (upto 2030) 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Qty Rate [USD] Amount Qty Rate [USD] Amount [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] d Replacement of Butterfly Valve with Actuator, DN 800 nos - - - - e Replacement of Butterfly Valve with Actuator, DN 1000 nos - - - - f Replacement of Butterfly Valve, DN 1000 nos - - - - g Replacement of Flowmeters, DN1500 nos 2 57,384 114,769 2 57,384 114,769 57,384 57,384 57,384 57,384 h Replacement of Flowmeters, DN1400 nos 2 51,237 102,473 2 51,237 102,473 51,237 51,237 51,237 51,237 iii Replacement of Flowmeters, DN800 (to Emerald Hill) nos 1 19,797 19,797 1 19,797 19,797 9,899 9,899 9,899 9,899 j Replacement of Flowmeters, DN 975 (to Alexandra Park) nos 1 19,797 19,797 1 19,797 19,797 9,899 9,899 9,899 9,899 k Replacement of Flowmeters, DN 750 (to Alexandra Park) nos 1 17,015 17,015 1 17,015 17,015 8,508 8,508 8,508 8,508 l Replacement of Level Gauges on Clear Water Reservoir nos 2 10,000 20,000 2 10,000 20,000 10,000 10,000 10,000 10,000 m Replacement of Mechanical Level Gauge on Clear Water Reservoir nos 1 6,000 6,000 1 6,000 6,000 3,000 3,000 3,000 3,000 - - - - iv Replacement/Rehabilitation of Power Transformers - - - - a Rehabilitation/Replacement of Transformers : 10 MVA, 33/3.3 kV nos. 3 250,000 750,000 3 250,000 750,000 375,000 375,000 375,000 375,000 b Rehabilitation/Replacement of Transformers : 300 kVA, 3.3/0.40 kV nos. 3 25,000 75,000 3 25,000 75,000 37,500 37,500 37,500 37,500 c Replacement of Transformer Secondary Cables, XLPE/SWA, 25 mm2 m 9,000 60 540,000 9,000 60 540,000 270,000 270,000 270,000 270,000 - - - - v Miscellaneous - - - - a Security lights and fence sum 1 15,000 15,000 1 15,000 15,000 7,500 7,500 7,500 7,500 b Standby generators sum 1 40,000 40,000 1 40,000 40,000 20,000 20,000 20,000 20,000 c Buildings sum 1 105 105 1 105 105 53 53 53 53 d Vehicles, plant and equipment sum 1 400,000 400,000 1 400,000 400,000 200,000 200,000 200,000 200,000 e SCADA and radio communication systems sum 1 145,000 145,000 1 145,000 145,000 72,500 72,500 72,500 72,500 B.4 Rehabilitation of ALEXANDER PARK Booster Station 2,692,403 1,536,915 - - - 546,202 546,202 - - - - - - - 768,457 768,457 - - - i Replacement/Rehabilitation/Replacement of Booster Pumps (Pump House No. 01) a Replacement/Replacement of Booster Pumps, Q = 1250, H = 55 m nos. 3 80,000 240,000 3 80,000 240,000 120,000 120,000 120,000 120,000 b Rehabilitation/Replacement of Booster Pumps, Q = 1250, H = 55 m nos. 1 48,000 48,000 1 80,000 80,000 24,000 24,000 40,000 40,000 c Replacement/Replacement of Booster Pump Controls sum 1 12,000 12,000 1 12,000 12,000 6,000 6,000 6,000 6,000 d Rehabilitation/Replacement of Booster Pump Suction Gate Valves, DN 400 nos. 4 10,356 41,425 4 17,261 69,042 20,713 20,713 34,521 34,521 e Rehabilitation/Replacement of Booster Pump Delivery Gate Valves, DN 400 nos. 4 10,356 41,425 4 17,261 69,042 20,713 20,713 34,521 34,521 f Rehabilitation/Replacement of Booster Water Pump NRVs, DN 400 nos. 4 12,443 49,770 4 20,738 82,950 24,885 24,885 41,475 41,475 g Replacement/Replacement of Pressure Gauges nos. 8 2,000 16,000 8 2,000 16,000 8,000 8,000 8,000 8,000 h Installation/Replacement of Air Valves, DN 100 nos 4 3,000 12,000 4 3,000 12,000 6,000 6,000 6,000 6,000 i Rehabilitation/Replacement of Feeder Switchboard nos. 1 21,000 21,000 1 35,000 35,000 10,500 10,500 17,500 17,500 j Rehabilitation/Replacement of Booster Pump Starter Console nos. 4 3,600 14,400 4 6,000 24,000 7,200 7,200 12,000 12,000 k Rehabilitation/Replacement of 380 V LV Switchboard nos. 1 2,400 2,400 1 8,000 8,000 1,200 1,200 4,000 4,000 l Rehabilitation/Replacement of Small Power and Lighting sum 2 7,200 14,400 2 12,000 24,000 7,200 7,200 12,000 12,000 m Installation/Replacement overhead Wire Rope Hoist, 5 t nos. 2 4,800 9,600 2 8,000 16,000 4,800 4,800 8,000 8,000 n Replacement/Replacement of Dewatering Pumps nos. 1 4,500 4,500 1 4,500 4,500 2,250 2,250 2,250 2,250 o Rehabilitation/Replacement of Ventilation Fans nos. 8 1,800 14,400 8 3,000 24,000 7,200 7,200 12,000 12,000 - - - - ii Rehabilitation/Replacement of Booster Pumps (Pump House No. 02) - - - - a Rehabilitation/Replacement of Booster Pumps, Q = 1035, H = 95 m nos. 2 84,000 168,000 2 140,000 280,000 84,000 84,000 140,000 140,000 b Replacement/Replacement of Booster Pump Controls sum 1 12,000 12,000 1 12,000 12,000 6,000 6,000 6,000 6,000 c Rehabilitation/Replacement of Booster Pump Suction Butterfly Valves, DN 400 nos. 2 6,835 13,670 2 11,392 22,784 6,835 6,835 11,392 11,392 d Rehabilitation/Replacement of Booster Pump Delivery Gate Valves, DN 400 nos. 2 10,356 20,713 2 17,261 34,521 10,356 10,356 17,261 17,261 f Rehabilitation/Replacement of Booster Water Pump NRVs, DN 400 nos. 2 10,800 21,600 2 18,000 36,000 10,800 10,800 18,000 18,000 g Replacement/Replacement of Pressure Gauges nos. 4 2,000 8,000 4 2,000 8,000 4,000 4,000 4,000 4,000 h Installation/Replacement of Air Valves, DN 100 nos 2 3,000 6,000 2 3,000 6,000 3,000 3,000 3,000 3,000 i Rehabilitation/Replacement of 380 V LV Switchboard nos. 1 2,400 2,400 1 8,000 8,000 1,200 1,200 4,000 4,000 j Rehabilitation/Replacement of Small Power and Lighting sum 1 7,200 7,200 1 12,000 12,000 3,600 3,600 6,000 6,000 k Installation/Replacement overhead Wire Rope Hoist, 3 t nos. 1 4,800 4,800 1 8,000 8,000 2,400 2,400 4,000 4,000 l Rehabilitation/Replacement of Gravity Drainage System nos. 1 4,500 4,500 1 4,500 4,500 2,250 2,250 2,250 2,250 m Install/Replacement of Ventilation Fan nos. 1 1,800 1,800 1 3,000 3,000 900 900 1,500 1,500 - - - - iii Rehabilitation/Replacement of Valves - - - - a Rehabilitation/Replacement of Butterfly Valve, DN 525 (outflow from Pump House 01) nos 1 11,465 11,465 1 19,108 19,108 5,732 5,732 9,554 9,554 b Rehabilitation/Replacement of NRV, DN 525 (outflow from Pump House 01) nos 1 19,061 19,061 1 31,769 31,769 9,531 9,531 15,884 15,884 c Rehabilitation/Replacementof Gate Valve, DN 525 (main inflow) nos 3 17,371 52,114 1 28,952 28,952 26,057 26,057 14,476 14,476 Installation/Replacement of Level Gauges on Clear Water Reservoir nos 1 10,000 10,000 1 10,000 10,000 5,000 5,000 5,000 5,000 iv Installation/Replacement of Flowmeters - - - - a Installation /Replacement of Inflow Flowmeter, DN 600 (from Warren) nos 1 13,669 13,669 1 13,669 13,669 6,835 6,835 6,835 6,835 b Installation /Replacement of Inflow Flowmeter, DN 750 (from Warren) nos 1 17,262 17,262 1 17,262 17,262 8,631 8,631 8,631 8,631 c Installation/Replacement of Outflow Flowmeters, DN 450 (to Hatcliff) nos 1 10,000 10,000 4 10,000 40,000 5,000 5,000 20,000 20,000 d Installation/Replacement of Outflow Flowmeters, DN 525 (to Crow Hill) nos 1 11,329 11,329 4 11,329 45,315 5,664 5,664 22,658 22,658 - - - - v Miscellaneous - - - - a Rehabilitation/Replacement of Transformer : 500 kVA, 11/0.40 kV (Pump House 02) nos. 1 18,000 18,000 1 30,000 30,000 9,000 9,000 15,000 15,000 b Rehabilitation/Maintenance/Replacement of Transformers : 750 kVA, 11/0.40 kV (Pump House 01) nos. 2 21,000 42,000 2 35,000 70,000 21,000 21,000 35,000 35,000 c Installation/Replacement of security fence and lights sum 1 18,000 18,000 1 18,000 18,000 9,000 9,000 9,000 9,000 d Installatio/Replacement of Generator, 60 kVA (for dewatering pumps and security lights) nos 1 25,000 25,000 1 25,000 25,000 12,500 12,500 12,500 12,500 e Maintenance/Rehabilitation of Office and Workshop Buildings Incl. Electrical and Mechanical Works sum 1 8,500 8,500 1 12,500 12,500 4,250 4,250 6,250 6,250 d Supply and Delivery/Replacement of SCADA and Radio Communication Systems sum 1 24,000 24,000 1 24,000 24,000 12,000 12,000 12,000 12,000 B.5 Rehabilitation of Letombo Booster Station 1,600,000 - - - 800,000 800,000 - - - - - - - - - - - - Replacement of booster pumps, clear water valves, flowmeters, and other miscellaneous items Sum 1 1,600,000 1,600,000 800,000 800,000 B.6 Rehabilitation of storage Reservoirs including lift stations 2,000,000 - - - 1,000,000 1,000,000 - - - - - - - - - - - - Sum 1 2,000,000 2,000,000 1,000,000 1,000,000 C. EXTENSION OF WATER SUPPLY SERVICES 55,761,426 401,777,404 7,774,489 7,774,489 7,774,489 8,444,489 8,444,489 49,621,335 49,621,335 57,680,032 15,833,187 15,833,187 15,833,187 15,833,187 55,134,854 55,134,854 55,134,854 15,833,187 15,833,187 C.1 Proposed Kunzvi Water Supply Scheme - 151,445,535 - - - - - 41,846,845 41,846,845 41,846,845 - - - - 8,635,000 8,635,000 8,635,000 - - i Kunzvi Dam a Construction of Dam sum - 40,000,000 - ii Water Production, Treatment and Transmission Facilities a Raw water intake and pump station Sum 1 7,000,000 7,000,000 2,333,333.33 2,333,333.33 2,333,333.33 b Raw water transmission main (ND 1200) m 8,050 890 7,164,500 2,388,166.67 2,388,166.67 2,388,166.67 c Water Treatment Plant (150 ML/day) ML/day 150 450,000 67,500,000 15,075,000 15,075,000 15,075,000 7,425,000 7,425,000 7,425,000 d First treated water pump station Sum 1 5,000,000 5,000,000 1,116,667 1,116,667 1,116,667 550,000 550,000 550,000 e Treated water transmission main (ND 1200) m 39,432 890 35,094,480 11,698,160 11,698,160 11,698,160 f Second treated water pump station Sum 1 6,000,000 6,000,000 1,340,000 1,340,000 1,340,000 660,000 660,000 660,000 g Miscellaneous (access roads, surge relief structures, special pipe surports, power supply etc) Sum 1 3,500,000 3,500,000 1,166,666.67 1,166,666.67 1,166,666.67 - - iii Transmission Pipelines downstream of Donny Brook Reservoirs - - a ND 900 from Donny Brook to Greendale pipeline m 9,413 620 5,836,060 1,945,353.33 1,945,353.33 1,945,353.33 b ND 350 from Greendale to Highlands and Crowhill m 6,303 190 1,197,570 399,190.00 399,190.00 399,190.00 c ND 350 from Greendale to Shamva Rd m 12,750 190 2,422,500 807,500.00 807,500.00 807,500.00 d ND 600 from Donnybrook to Vernterberg m 7,100 350 2,485,000 828,333.33 828,333.33 828,333.33 D:\Projects\Zimbabwe\InvestmentPlans\WorldBank_GHWSIP_Project\CostEstimates\RealCostEstimates_No Inflation\Investment Programme - HARARE_Real 140522.xlsx 6 of 16 Long Term Projects Medium Term Projects Greater Harare Water and Sanitation Investment Plan Covered under Chinese Exim Bank loan FS/FD Construction Covered under Zim-Fund Phase 1 FS/FD Construction Appendix 9-1: Detailed Investment Cost Estimates - HARARE Item Unit Medium Term (upto 2020) Long Term (upto 2030) 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Qty Rate [USD] Amount Qty Rate [USD] Amount [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] e Warren to Munity and Kuwadzana and Dzivaresekwa - ND 300 m 3,116 160 498,609 166,203.12 166,203.12 166,203.12 ND 600 m 4,927 350 1,724,354 574,784.70 574,784.70 574,784.70 ND 700 m 1,553 440 683,399 227,799.81 227,799.81 227,799.81 f Warren to Lonchinvar and Marimba Park - ND 350 m 576 190 109,496 36,498.57 36,498.57 36,498.57 ND 400 m 1,176 210 246,981 82,327.03 82,327.03 82,327.03 ND 500 m 5,311 250 1,327,773 442,591.04 442,591.04 442,591.04 g to Adylinn (See map) - ND 400 m 454 210 95,379 31,792.89 31,792.89 31,792.89 ND 450 m 2,148 240 515,551 171,850.35 171,850.35 171,850.35 ND 650 m 1,049 440 461,574 153,858.02 153,858.02 153,858.02 h ND 600 Off Warren-Letombo line to Waterfalls (off-take) m 2,715 350 950,134 316,711.23 316,711.23 316,711.23 i ND 600 Off Warren-Letombo line to Hatfield (off-take) m 1,481 350 518,425 172,808.36 172,808.36 172,808.36 j ND 525 from Ventersburg to Ruwa WTP m 4,050 275 1,113,750 371,250.00 371,250.00 371,250.00 C.2 Construction of new storage reservoirs - 92,000,000 - - - - - - - - - - - - 30,666,667 30,666,667 30,666,667 - - i Additional capacity at Adylinn m3 22,000 400 8,800,000 2,933,333 2,933,333 2,933,333 ii Additional capacity at Epsilon m3 7,500 400 3,000,000 1,000,000 1,000,000 1,000,000 iii Additional capacity at Bluff Hill m3 12,000 400 4,800,000 1,600,000 1,600,000 1,600,000 iv Additional capacity at Meyrick Park m3 2,000 400 800,000 266,667 266,667 266,667 v Additional capacity at Kopje 3 18,000 400 7,200,000 m 2,400,000 2,400,000 2,400,000 vi Additional capacity at Ventersberg 3 30,000 400 12,000,000 m 4,000,000 4,000,000 4,000,000 vii Additional capacity at Hatfield m3 36,000 400 14,400,000 4,800,000 4,800,000 4,800,000 vii Additional capacity at Waterfalls m3 50,000 400 20,000,000 6,666,667 6,666,667 6,666,667 viii Additional capacity at Kuwadzana 3 45,000 400 18,000,000 m 6,000,000 6,000,000 6,000,000 iv New Shamva Rd Tank m3 7,500 400 3,000,000 - - 1,000,000 1,000,000 1,000,000 C.3 Extension of distribution system in expansion areas 54,421,426 158,331,869 7,774,489 7,774,489 7,774,489 7,774,489 7,774,489 7,774,489 7,774,489 15,833,187 15,833,187 15,833,187 15,833,187 15,833,187 15,833,187 15,833,187 15,833,187 15,833,187 15,833,187 i Pipes ND 75 PVC m 408,312 22 8,982,859 1,187,929 22 26,134,428 1,283,266 1,283,266 1,283,266 1,283,266 1,283,266 1,283,266 1,283,266 2,613,443 2,613,443 2,613,443 2,613,443 2,613,443 2,613,443 2,613,443 2,613,443 2,613,443 2,613,443 ND 110 PVC m 326,649 30 9,799,482 950,343 30 28,510,285 1,399,926 1,399,926 1,399,926 1,399,926 1,399,926 1,399,926 1,399,926 2,851,029 2,851,029 2,851,029 2,851,029 2,851,029 2,851,029 2,851,029 2,851,029 2,851,029 2,851,029 ND 160 PVC m 146,992 45 6,614,651 427,654 45 19,244,443 944,950 944,950 944,950 944,950 944,950 944,950 944,950 1,924,444 1,924,444 1,924,444 1,924,444 1,924,444 1,924,444 1,924,444 1,924,444 1,924,444 1,924,444 ii Section valves ND 75 Gate nos. 4,083 200 816,624 11,879 200 2,375,857 116,661 116,661 116,661 116,661 116,661 116,661 116,661 237,586 237,586 237,586 237,586 237,586 237,586 237,586 237,586 237,586 237,586 ND 100 Gate nos. 3,266 250 816,624 9,503 250 2,375,857 116,661 116,661 116,661 116,661 116,661 116,661 116,661 237,586 237,586 237,586 237,586 237,586 237,586 237,586 237,586 237,586 237,586 ND 150 Gate nos. 1,470 450 661,465 4,277 450 1,924,444 94,495 94,495 94,495 94,495 94,495 94,495 94,495 192,444 192,444 192,444 192,444 192,444 192,444 192,444 192,444 192,444 192,444 iii Fire hydrants ND 80 nos. 947 200 189,457 2,756 200 551,199 27,065 27,065 27,065 27,065 27,065 27,065 27,065 55,120 55,120 55,120 55,120 55,120 55,120 55,120 55,120 55,120 55,120 iv Service connections ND 15 nos. 68,052 150 10,207,794 197,988 150 29,698,214 1,458,256 1,458,256 1,458,256 1,458,256 1,458,256 1,458,256 1,458,256 2,969,821 2,969,821 2,969,821 2,969,821 2,969,821 2,969,821 2,969,821 2,969,821 2,969,821 2,969,821 ND 25 nos. 13,610 250 3,402,598 39,598 250 9,899,405 486,085 486,085 486,085 486,085 486,085 486,085 486,085 989,940 989,940 989,940 989,940 989,940 989,940 989,940 989,940 989,940 989,940 v Service water meters Domestic (ND 15) nos. 68,052 150 10,207,794 197,988 150 29,698,214 1,458,256 1,458,256 1,458,256 1,458,256 1,458,256 1,458,256 1,458,256 2,969,821 2,969,821 2,969,821 2,969,821 2,969,821 2,969,821 2,969,821 2,969,821 2,969,821 2,969,821 Non-Domestic (ND 25) nos. 13,610 200 2,722,078 39,598 200 7,919,524 388,868 388,868 388,868 388,868 388,868 388,868 388,868 791,952 791,952 791,952 791,952 791,952 791,952 791,952 791,952 791,952 791,952 C.4 Other new bulk water management facilities 1,340,000 - - - - 670,000 670,000 - - - - - - - - - - - - i Automatic Control System for pumps and reservoirs Station 50 25,000 1,250,000 625,000 625,000 - ii Water quality monitoring equipment Sum 3 30,000 90,000 45,000 45,000 - D. SEWERAGE SERVICE IMPROVEMENTS 46,102,489 23,032,306 - - - 13,517,894 13,517,894 6,355,567 6,355,567 6,355,567 - - - - 11,516,153 11,516,153 - - - D.1 Rehabilitation of Firle WWTW 5,879,230 11,483,621 - - - 2,939,615 2,939,615 - - - - - - - 5,741,811 5,741,811 - - - i Rehabilitation of Inlet Works: Unit 1 to Unit 4 a Replacement of the Main Intake Sluice Gate, 1.8m x 2.0m* nos - 1 4,000 4,000 - - 2,000 2,000 b Replacement of the Main Intake Screens, 1.8m x 3.0m (approx)* nos - 3 4,500 13,500 - - 6,750 6,750 c Replacement of Intake Sluice Gates, 1.5m x 1.5m* nos - 13 2,000 26,000 - - 13,000 13,000 d Installation of mechanical screen nos - 1 25,000 25,000 - - 12,500 12,500 e Replacement of Intake Screens* nos - 4 3,500 14,000 - - 7,000 7,000 f Replacement of Air Lift Pumps* nos - 6 4,500 27,000 - - 13,500 13,500 g Replacement of Detritors* nos - 2 9,000 18,000 - - 9,000 9,000 h Replacement of Elevators* nos - 2 6,500 13,000 - - 6,500 6,500 i Replacement of Flowmeters* nos - 2 12,000 24,000 - - 12,000 12,000 j Replacement of Compressors for Air Pumps* nos - 2 15,000 30,000 - - 15,000 15,000 k Replacement of LV Switchboard nos 1 12,000 12,000 1 12,000 12,000 6,000 6,000 6,000 6,000 l Replacement of Small Power and Lighting sum 1 4,500 4,500 1 4,500 4,500 2,250 2,250 2,250 2,250 - - - - ii Rehabilitation of Inlet Works: Unit 5 - - - - a Replacement of Intake Sluice Gates, 1.5m x 1.5m* sum 4,500 - 1 4,500 4,500 - - 2,250 2,250 b Replacement of Detritors* nos 9,000 - 4 9,000 36,000 - - 18,000 18,000 c Replacement of Elevators* nos 6,500 - 2 6,500 13,000 - - 6,500 6,500 d Replacement of Flowmeters* nos 12,000 - 2 12,000 24,000 - - 12,000 12,000 e Replacement of LV Switchboard nos 1 12,000 12,000 1 12,000 12,000 6,000 6,000 6,000 6,000 f Replacement of Air Lift Pumps* nos 4,500 - 6 4,500 27,000 - - 13,500 13,500 g Replacement of Small Power and Lighting sum 1 4,500 4,500 1 4,500 4,500 2,250 2,250 2,250 2,250 h Installation of mechanical screen nos 25,000 - 1 25,000 25,000 - - 12,500 12,500 - - - - iii Extension of inlet works Sum 1 1,440,000 1,440,000 - - 720,000 720,000 - - - - iv PSTs and Trickling Filters (Units 1 to 4) - - - - a Rehabilitation of the Division Box* sum 1 30,000 30,000 - - 15,000 15,000 b Rehabilitation of the Primary Sedimentation Tanks* nos 16 17,628 282,054 - - 141,027 141,027 c Rehabilitation of the Trickling Filters* nos 8 107,553 860,426 - - 430,213 430,213 - - - - v Raw sludge pumps (Units 1 to 4) - - - - a Replacement of Raw Sludge Pumps, Q = 95 m3, H = 20 m nos. 2 10,800 21,600 2 10,800 21,600 10,800 10,800 10,800 10,800 b Replacement of RW Water Pump Controls sum 1 4,800 4,800 1 4,800 4,800 2,400 2,400 2,400 2,400 c Rehabilitation of Raw SludgePump Suction Gate Valves, DN 150* nos. 2 785 1,571 2 785 1,571 785 785 785 785 d Replacement of Raw Sludge Pump Delivery Gate Valves, DN 100* nos. 2 459 919 2 459 919 459 459 459 459 e Replacement of Non-Return Valves, DN 100 nos. 2 20,000 40,000 2 20,000 40,000 20,000 20,000 20,000 20,000 f Replacement of Pressure Gauges nos. 4 2,000 8,000 4 2,000 8,000 4,000 4,000 4,000 4,000 g Installation of Air Valves nos 2 3,000 6,000 2 3,000 6,000 3,000 3,000 3,000 3,000 h Replacement/Maintenance/Rehabilitation of Raw Water Pump 380 V LV Switchboard nos. 1 8,000 8,000 1 8,000 8,000 4,000 4,000 4,000 4,000 D:\Projects\Zimbabwe\InvestmentPlans\WorldBank_GHWSIP_Project\CostEstimates\RealCostEstimates_No Inflation\Investment Programme - HARARE_Real 140522.xlsx 7 of 16 Long Term Projects Medium Term Projects Greater Harare Water and Sanitation Investment Plan Covered under Chinese Exim Bank loan FS/FD Construction Covered under Zim-Fund Phase 1 FS/FD Construction Appendix 9-1: Detailed Investment Cost Estimates - HARARE Item Unit Medium Term (upto 2020) Long Term (upto 2030) 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Qty Rate [USD] Amount Qty Rate [USD] Amount [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] i Replacement of Small Power and Lighting sum 1 6,000 6,000 1 6,000 6,000 3,000 3,000 3,000 3,000 j Repalcement/Maintenance/Rehabilitation overhead Wire Rope Hoist, 5 t nos. 1 5,000 5,000 1 5,000 5,000 2,500 2,500 2,500 2,500 k Replacement of Dewatering Pumps nos. 1 4,500 4,500 1 4,500 4,500 2,250 2,250 2,250 2,250 l Replacement of Humas Pumps and Fittings, Q = 1620 m3/h, H = 40 m nos 1 65,000 65,000 1 65,000 65,000 32,500 32,500 32,500 32,500 m Replacement of Irrigation Pumps and Fittings, Q = 40 m3/h, H = 10 m nos 1 9,000 9,000 1 9,000 9,000 4,500 4,500 4,500 4,500 - - - - vi BNR Reactor (Units 3 & 4) - - - - a Rehabilitation of BNR Unit* sum 4 107,000 428,000 4 107,000 428,000 214,000 214,000 214,000 214,000 b Replacement of RAS Pump, kW = 11 nos 4 25,000 100,000 4 25,000 100,000 50,000 50,000 50,000 50,000 c Replacement/Rehabilitation of RAS Pump Delivery Valves, DN 250 nos. 4 4,064 16,257 4 4,064 16,257 8,128 8,128 8,128 8,128 d Replacement/Rehabilitation of RAS Pump Non-Return Valves, DN 250 nos. 4 4,064 16,257 4 4,064 16,257 8,128 8,128 8,128 8,128 e Replacement of Ras Pump Pressure Gauges nos. 4 2,000 8,000 4 2,000 8,000 4,000 4,000 4,000 4,000 f Installation/Rehabilitation of RAS Pump Air Valves nos 4 3,000 12,000 4 3,000 12,000 6,000 6,000 6,000 6,000 g Replacement of WAS Pump, kW = 5.5 nos 2 18,000 36,000 2 18,000 36,000 18,000 18,000 18,000 18,000 h Replacement/Rehabilitation of WAS Pump Delivery Valves, DN 150 nos. 2 1,309 2,618 2 1,309 2,618 1,309 1,309 1,309 1,309 i Replacement/Rehabilitation of WAS Pump Non-Return Valves, DN 150 nos. 2 1,309 2,618 2 1,309 2,618 1,309 1,309 1,309 1,309 j Replacement of Was Pump Pressure Gauges nos. 2 2,000 4,000 2 2,000 4,000 2,000 2,000 2,000 2,000 k Installation/Maintenance/Rehabilitation of WAS Pump Air Valves nos 2 1,500 3,000 2 1,500 3,000 1,500 1,500 1,500 1,500 l Replacement/Maintenance/Rehabilitation of RAS & Was Pump 380 V LV Switchboard nos. 1 16,000 16,000 1 16,000 16,000 8,000 8,000 8,000 8,000 m Replacement of Small Power and Lighting sum 1 2,500 2,500 1 2,500 2,500 1,250 1,250 1,250 1,250 n Maintenance/Maintenance/Rehabilitation overhead Wire Rope Hoist, 3.0 t nos. 2 3,500 7,000 2 3,500 7,000 3,500 3,500 3,500 3,500 - - - - - - vii Rehabilitation/Maintenance/Rehabilitation of Clarifiers nos 5 27,600 138,000 5 16,560 82,800 69,000 69,000 41,400 41,400 - - - - viii PSTs (Unit 5) - - - - a Maintenance/Rehabilitation of the Division Box* sum 1 30,000 30,000 - - 15,000 15,000 b Maintenance/Rehabilitation of the Primary Sedimentation Tanks* nos 16 17,628 282,054 - - 141,027 141,027 - - - - ix Raw Sludge Pumps (Unit 5) - - - - a Replacement of Raw Sludge Pumps, Q = 95 m3/h, H = 20 m nos. 4 18,000 72,000 4 10,800 43,200 36,000 36,000 21,600 21,600 b Maintenance/Replacement of Raw Sludge Water Pump Controls sum 1 10,000 10,000 1 6,000 6,000 5,000 5,000 3,000 3,000 c Replacement/Rehabilitation of Raw SludgePump Suction Gate Valves, DN 150* nos. 1,309 - 2 785 1,571 - - 785 785 d Replacement/Rehabilitation of Raw Sludge Pump Delivery Gate Valves, DN 100* nos. 766 - 2 459 919 - - 459 459 e Replacement of Non-Return Valves, DN 100 nos. 2 2,982 5,964 2 20,000 40,000 2,982 2,982 20,000 20,000 f Replacement of Pressure Gauges nos. 4 2,000 8,000 4 2,000 8,000 4,000 4,000 4,000 4,000 g Installation/Rehabilitation of Air Valves nos 2 3,000 6,000 2 3,000 6,000 3,000 3,000 3,000 3,000 h Replacement/Rehabilitation of Raw Sludge Pump 380 V LV Switchboard nos. 1 16,000 16,000 1 9,600 9,600 8,000 8,000 4,800 4,800 i Replacement of Small Power and Lighting sum 1 3,500 3,500 1 3,500 3,500 1,750 1,750 1,750 1,750 j Repalcement/Rehabilitation overhead Wire Rope Hoist, 5 t nos. 1 5,000 5,000 1 3,000 3,000 2,500 2,500 1,500 1,500 k Replacement of Dewatering Pump nos. 1 4,500 4,500 1 4,500 4,500 2,250 2,250 2,250 2,250 - - - - x BNR Reactor (Unit 5) - - - - a Rehabilitation of BNR Unit* sum - 4 135,000 540,000 - - 270,000 270,000 b Replacement of RAS Pump, kW = 37 nos 8 35,000 280,000 8 35,000 280,000 140,000 140,000 140,000 140,000 c Rehabilitation of RAS Pump Delivery Valves, DN 400 nos. 8 17,261 138,085 8 10,356 82,851 69,042 69,042 41,425 41,425 d Replacement/Rehabilitation of RAS Pump Non-Return Valves, DN 400 nos. 8 20,738 165,900 8 12,443 99,540 82,950 82,950 49,770 49,770 e Replacement of Ras Pump Pressure Gauges nos. 8 2,000 16,000 8 2,000 16,000 8,000 8,000 8,000 8,000 f Installation/Rehabilitation of RAS Pump Air Valves nos 8 3,000 24,000 8 3,000 24,000 12,000 12,000 12,000 12,000 g Replacement of WAS Pump, kW = 13.5 nos 4 18,000 72,000 4 18,000 72,000 36,000 36,000 36,000 36,000 h Replacement/Rehabilitation of WAS Pump Delivery Valves, DN 150 nos. 4 1,309 5,236 4 785 3,142 2,618 2,618 1,571 1,571 i Replacement/Rehabilitation of WAS Pump Non-Return Valves, DN 150 nos. 4 2,982 11,928 4 1,789 7,157 5,964 5,964 3,578 3,578 j Replacement of Was Pump Pressure Gauges nos. 4 2,000 8,000 4 2,000 8,000 4,000 4,000 4,000 4,000 k Installation/Rehabilitation of WAS Pump Air Valves nos 4 1,500 6,000 4 1,500 6,000 3,000 3,000 3,000 3,000 l Replacement/Rehabilitation of RAS & Was Pump 380 V LV Switchboard nos. 4 16,000 64,000 4 9,600 38,400 32,000 32,000 19,200 19,200 m Replacement of Small Power and Lighting sum 1 2,500 2,500 1 2,500 2,500 1,250 1,250 1,250 1,250 n Rehabilitation overhead Wire Rope Hoist, 3.0 t nos. 4 3,500 14,000 4 2,100 8,400 7,000 7,000 4,200 4,200 - - - - - - xi Rehabilitation/Maintenance/Rehabilitation of Clarifiers nos 12 27,600 331,200 12 16,560 198,720 165,600 165,600 99,360 99,360 - - - - xi Effluent Pump Station A - - - - Replacement of Effluent Pumps, Q = 2000, H = 65 m* nos. - 6 160,000 960,000 - - 480,000 480,000 Installation of Effluent Pumps Controls sum 15,000 - 1 9,000 9,000 - - 4,500 4,500 Rehabilitation of Effluent Pumps Suction Gate Valves, DN 400* nos. - 6 10,356 62,138 - - 31,069 31,069 Rehabilitation of Effluent Pumps Delivery Gate Valves with Actuators, DN 400* nos. - 6 10,356 62,138 - - 31,069 31,069 Rehabilitation of Effluent Pumps Non-Return Valves, DN 400* nos. - 6 12,443 74,655 - - 37,328 37,328 Rehabilitation of Effluent PumpsPressure Gauges* nos. - 12 2,000 24,000 - - 12,000 12,000 Installation of Effluent Pumps Air Valves* nos - 6 600 3,600 - - 1,800 1,800 Rehabilitation of Effluent Pump 3.3 kV Starter Feeder Switchboard* nos. - 1 126,000 126,000 - - 63,000 63,000 Rehabilitation of Effluent Pump 3.3 kV Starter Console* nos. - 6 10,500 63,000 - - 31,500 31,500 Rehabilitation of Effluent Pump 3.3 kV Remote Starter Panels* nos. - 6 12,000 72,000 - - 36,000 36,000 Rehabilitation of HL Effluent Pump 380 V LV Switchboard* nos. - 1 9,600 9,600 - - 4,800 4,800 Replacement of Small Power and Lighting sum 6,000 - 1 8,000 8,000 - - 4,000 4,000 Rehabilitation overhead Wire Rope Hoist, 10 t nos. 8,000 - 1 4,800 4,800 - - 2,400 2,400 eplacement of Dewatering Pumps nos. 4,500 - 2 4,500 9,000 - - 4,500 4,500 Rehabilitation of Ventilation Fans nos. 3,000 - 1 1,800 1,800 - - 900 900 - - - xii Effluent Pump Station B - - - Replacement of Effluent Pumps, Q = 2000, H = 65 m* nos. 3 160,000 480,000 4 160,000 640,000 240,000 240,000 320,000 320,000 Installation/Rehabilitation Effluent Pumps Controls sum 1 10,000 10,000 1 6,000 6,000 5,000 5,000 3,000 3,000 Rehabilitation of Effluent Pumps Suction Gate Valves, DN 700* nos. 3 69,663 208,989 4 76,549 306,196 104,495 104,495 153,098 153,098 Replacement/Rehabilitation of Effluent Pumps Delivery Gate Valves with Actuators, DN 700* nos. 3 69,663 208,989 4 76,549 306,196 104,495 104,495 153,098 153,098 Replacement/Rehabilitation of Effluent Pumps Non-Return Valves, DN 700* nos. 3 38,069 114,206 4 22,841 91,365 57,103 57,103 45,683 45,683 Replacement/Rehabilitation of Effluent PumpsPressure Gauges* nos. 6 2,000 12,000 8 1,200 9,600 6,000 6,000 4,800 4,800 Installation/Replacement of Effluent Pumps Air Valves nos 3 2,000 6,000 4 1,200 4,800 3,000 3,000 2,400 2,400 Repalcement/Rehabilitation of Effluent Pump 3.3 kV Starter Feeder Switchboard* nos. - 1 144,000 144,000 - - 72,000 72,000 Replacement/Rehabilitation of Effluent Pump 3.3 kV Starter Console* nos. 3 35,000 105,000 4 21,000 84,000 52,500 52,500 42,000 42,000 Replacement/Rehabilitation of Effluent Pump 3.3 kV Remote Starter Panels* nos. 3 20,000 60,000 4 12,000 48,000 30,000 30,000 24,000 24,000 Replacement/Rehabilitation of HL Effluent Pump 380 V LV Switchboard* nos. - 1 9,600 9,600 - - 4,800 4,800 Replacement of Small Power and Lighting sum 1 6,000 6,000 1 8,000 8,000 3,000 3,000 4,000 4,000 Replacement/Rehabilitation overhead Wire Rope Hoist, 10 t nos. 1 8,000 8,000 1 4,800 4,800 4,000 4,000 2,400 2,400 Replacement of Dewatering Pumps nos. 2 4,500 9,000 2 4,500 9,000 4,500 4,500 4,500 4,500 Replacement of Ventilation Fans nos. 1 3,000 3,000 1 3,000 3,000 1,500 1,500 1,500 1,500 Replacement of Gate Valve, DN 900 nos. 1 104,064 104,064 1 104,064 104,064 52,032 52,032 52,032 52,032 D:\Projects\Zimbabwe\InvestmentPlans\WorldBank_GHWSIP_Project\CostEstimates\RealCostEstimates_No Inflation\Investment Programme - HARARE_Real 140522.xlsx 8 of 16 Long Term Projects Medium Term Projects Greater Harare Water and Sanitation Investment Plan Covered under Chinese Exim Bank loan FS/FD Construction Covered under Zim-Fund Phase 1 FS/FD Construction Appendix 9-1: Detailed Investment Cost Estimates - HARARE Item Unit Medium Term (upto 2020) Long Term (upto 2030) 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Qty Rate [USD] Amount Qty Rate [USD] Amount [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] Replacement of NRV, DN 900 nos. 1 38,069 38,069 1 38,069 38,069 19,034 19,034 19,034 19,034 Replacement of Gate Valve, DN 700 nos. 1 69,663 69,663 1 69,663 69,663 34,832 34,832 34,832 34,832 - - - - - - xiii Digesters: Unit 1 to Unit 4 and Unit 5 - - - - - - Rehabilitation/Maintenance/Rehabilitation of Primary Digesters nos. 19 50,774 964,697 19 30,464 578,818 482,348 482,348 289,409 289,409 Rehabilitation/Maintenance/Rehabilitation of Secondary Digesters nos. 5 29,500 147,500 5 17,700 88,500 73,750 73,750 44,250 44,250 - - - - - xiv Digester Sludge Control Pumps - - - - a Replacement of Mixing Pumps, Q = 72, H = 13 m* nos. 5 16,000 80,000 - - 40,000 40,000 b Installation/Rehabilitation Mixing Pumps Controls sum 1 4,000 4,000 1 2,400 2,400 2,000 2,000 1,200 1,200 c Rehabilitation of Mixing Pumps Suction Gate Valves, DN 150* nos. - 5 785 3,927 - - 1,964 1,964 d Rehabilitation of Mixing Pumps Delivery Gate Valves, DN 150* nos. - 5 785 3,927 - - 1,964 1,964 e Rehabilitation of Mixing Pumps Non-Return Valves, DN 150* nos. - 5 1,789 8,946 - - 4,473 4,473 f Replacement of Mixing PumpsPressure Gauges* nos. - 10 1,200 12,000 - - 6,000 6,000 g Rehabilitation of Mixing Pumps Air Valves* nos - 5 1,200 6,000 - - 3,000 3,000 h Replacement of Injection Pumps, Q = 108, H = 39 m* nos. - 3 25,000 75,000 - - 37,500 37,500 i Installation/Rehabilitation Injection Pumps Controls sum 1 4,000 4,000 1 2,400 2,400 2,000 2,000 1,200 1,200 j Rehabilitation of Injection Pumps Suction Gate Valves, DN 150* nos. - 3 785 2,356 - - 1,178 1,178 k Rehabilitation of Injection Pumps Delivery Gate Valves, DN 150 nos. - 3 785 2,356 - - 1,178 1,178 l Rehabilitation of Injection Pumps Non-Return Valves, DN 150 nos. - 3 1,789 5,368 - - 2,684 2,684 m Rehabilitation of Injection Pumps Pressure Gauges nos. - 6 1,200 7,200 - - 3,600 3,600 n Rehabilitation of Injection Pumps Air Valves nos - 3 1,200 3,600 - - 1,800 1,800 o Rehabilitation of Mixing and Injection Pumps 380 V LV Switchboard* nos. - 1 9,600 9,600 - - 4,800 4,800 p Replacement of Small Power and Lighting sum 1 6,000 6,000 1 6,000 6,000 3,000 3,000 3,000 3,000 q Replacement/Rehabilitation overhead Wire Rope Hoist, 3 t nos. 1 8,000 8,000 1 4,800 4,800 4,000 4,000 2,400 2,400 r Replacement of Dewatering Pumps nos. 2 4,500 9,000 2 4,500 9,000 4,500 4,500 4,500 4,500 - - - - xv Heat Exchanger A - - - - a Replacement of Boilers* nos - 2 100,000 200,000 - - 100,000 100,000 b Replacement of Heat Effluent Pumps, kW = 11* nos. - 2 12,000 24,000 - - 12,000 12,000 c Installation/Rehabilitation Heat Effluent Pumps Controls sum 1 4,000 4,000 1 2,400 2,400 2,000 2,000 1,200 1,200 d Rehabilitation of Heat Effluent Pumps Suction Gate Valves, DN 150* nos. - 2 785 1,571 - - 785 785 e Rehabilitation of Heat Effluent Pumps Delivery Gate Valves, DN 150* nos. - 2 785 1,571 - - 785 785 f Rehabilitation of Heat Effluent Pumps Non-Return Valves, DN 150* nos. - 2 2,982 5,964 - - 2,982 2,982 g Replacement of Heat Effluent Pumps Pressure Gauges* nos. - 4 1,200 4,800 - - 2,400 2,400 h Rehabilitation of Heat Effluent Pumps Air Valves* nos - 2 1,200 2,400 - - 1,200 1,200 i Replacement of Recirculation Pumps, kW = 2.2* nos. - 2 9,000 18,000 - - 9,000 9,000 j Installation/Rehabilitation Recirculation Pumps Controls sum 1 4,000 4,000 1 2,400 2,400 2,000 2,000 1,200 1,200 k Rehabilitation of Recirculation Pumps Suction Gate Valves, DN 150* nos. - 2 785 1,571 - - 785 785 l Rehabilitation of Recirculation Pumps Delivery Gate Valves, DN 150* nos. - 2 785 1,571 - - 785 785 m Rehabilitation of Recirculation Pumps Non-Return Valves, DN 150* nos. - 2 2,982 5,964 - - 2,982 2,982 n Rehabilitation of Recirculation Pumps Pressure Gauges nos. - 4 1,200 4,800 - - 2,400 2,400 o Rehabilitation of Recirculation Pumps Air Valves nos - 2 1,200 2,400 - - 1,200 1,200 p Rehabilitation of Heat Effluent and Circulation Pumps 380 V LV Switchboard* nos. - 1 9,600 9,600 - - 4,800 4,800 q Replacement of Small Power and Lighting sum 1 6,000 6,000 1 6,000 6,000 3,000 3,000 3,000 3,000 r Replacement/Rehabilitation overhead Wire Rope Hoist, 3 t nos. 1 8,000 8,000 1 4,800 4,800 4,000 4,000 2,400 2,400 s Replacement of Dewatering Pumps nos. 2 4,500 9,000 1 4,500 4,500 4,500 4,500 2,250 2,250 - - - - - xvi Heat Exchanger B - - - - a Maintenance/Replacement of Boilers* nos - 4 80,000 320,000 - - 160,000 160,000 b Replacement of Heat Effluent Pumps, Q = 43.2 m3/h; H =14 m; kW = 11* nos. - 5 16,000 80,000 - - 40,000 40,000 c Installation/Rehabilitation Heat Effluent Pumps Controls sum 1 6,000 6,000 1 2,400 2,400 3,000 3,000 1,200 1,200 d ehabilitation of Heat Effluent Pumps Suction Gate Valves, DN 150* nos. - 2 785 1,571 - - 785 785 e Rehabilitation of Heat Effluent Pumps Delivery Gate Valves, DN 150* nos. - 2 785 1,571 - - 785 785 f Rehabilitation of Heat Effluent Pumps Non-Return Valves, DN 150* nos. - 2 1,789 3,578 - - 1,789 1,789 g Replacement of Heat Effluent Pumps Pressure Gauges* nos. - 4 1,200 4,800 - - 2,400 2,400 h Rehabilitation of Heat Effluent Pumps Air Valves* nos - 2 1,200 2,400 - - 1,200 1,200 i Replacement of Recirculation Pumps, Q = 54 m3/h; H = 15 m; kW = 15* nos. - 2 23,000 46,000 - - 23,000 23,000 j Installation/Rehabilitation Recirculation Pumps Controls sum 1 4,000 4,000 1 2,400 2,400 2,000 2,000 1,200 1,200 k Rehabilitation of Recirculation Pumps Suction Gate Valves, DN 150* nos. - 2 785 1,571 - - 785 785 l Rehabilitation of Recirculation Pumps Delivery Gate Valves, DN 150* nos. - 2 785 1,571 - - 785 785 m Rehabilitation of Recirculation Pumps Non-Return Valves, DN 150* nos. - 2 1,789 3,578 - - 1,789 1,789 n Rehabilitation of Recirculation Pumps Pressure Gauges nos. - 4 1,200 4,800 - - 2,400 2,400 o Rehabilitation of Recirculation Pumps Air Valves nos - 2 1,200 2,400 - - 1,200 1,200 p Replacement of Gas Booster Pumps, kW = 2.2* nos. - 2 9,000 18,000 - - 9,000 9,000 q Installation/Rehabilitation of Gas Booster Pumps Controls sum 1 4,000 4,000 1 2,400 2,400 2,000 2,000 1,200 1,200 r Rehabilitation of Gas Booster Pumps Suction Gate Valves, DN 150* nos. - 2 785 1,571 - - 785 785 s Rehabilitation of Gas Booster Pumps Delivery Gate Valves, DN 150* nos. - 2 785 1,571 - - 785 785 t Rehabilitation of Gas Booster Pumps Non-Return Valves, DN 150* nos. - 2 1,789 3,578 - - 1,789 1,789 u Rehabilitation of Gas Booster Pumps Pumps Pressure Gauges nos. - 4 1,200 4,800 - - 2,400 2,400 v Rehabilitation of Gas Booster Pumps Air Valves nos - 2 1,200 2,400 - - 1,200 1,200 w Rehabilitation of Heat Effluent , Circulation and Gas Booster Pumps 380 V LV Switchboard* nos. - 1 9,600 9,600 - - 4,800 4,800 x Replacement/Replacement of Small Power and Lighting sum 1 6,000 6,000 1 6,000 6,000 3,000 3,000 3,000 3,000 y Replacement/Rehabilitation overhead Wire Rope Hoist, 3 t nos. 1 8,000 8,000 1 4,800 4,800 4,000 4,000 2,400 2,400 z Replacement of Dewatering Pumps nos. 2 4,500 9,000 1 4,500 4,500 4,500 4,500 2,250 2,250 ab Maintenance/Rehabilitation of Gas Holders* nos 2 43,297 86,595 - - 43,297 43,297 ac Maintenance/Replacement of Burner nos 1 15,000 15,000 - - 7,500 7,500 - - - - xvii Power Transformers and Switchgear - - - - a Replacement of Transformers, 5 MVA, 33/3.3 kV nos. - - - - b Replacement of Transformer, 4 MVA, 33/11 kV nos. - - - - c Replacement of Transformer, 0.5 MVA, 3.3/0.40 kV nos. - - - - d Replacement of Transformer, 0.75 MVA, 11/3.3 kV nos. - - - - e Replacement of Transformer, 0.2 MVA, 11/0.40 kV nos. - - - - f Replacement of Auto Reclosers nos. - - - - - - - - xviii Miscellaneous - - - - a Security lights and fence Sum 1 20,000 20,000 1 35,000 35,000 10,000 10,000 17,500 17,500 b Standby generators Sum 1 54,600 54,600 1 54,600 54,600 27,300 27,300 27,300 27,300 c Buildings and roads Sum 1 300,000 300,000 - 150,000 150,000 - - d Vehicles, plant and equipment Sum 1 450,000 450,000 1 450,000 450,000 225,000 225,000 225,000 225,000 e SCADA and radio communication systems Sum 1 125,000 125,000 - 62,500 62,500 - - - - D:\Projects\Zimbabwe\InvestmentPlans\WorldBank_GHWSIP_Project\CostEstimates\RealCostEstimates_No Inflation\Investment Programme - HARARE_Real 140522.xlsx 9 of 16 Long Term Projects Medium Term Projects Greater Harare Water and Sanitation Investment Plan Covered under Chinese Exim Bank loan FS/FD Construction Covered under Zim-Fund Phase 1 FS/FD Construction Appendix 9-1: Detailed Investment Cost Estimates - HARARE Item Unit Medium Term (upto 2020) Long Term (upto 2030) 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Qty Rate [USD] Amount Qty Rate [USD] Amount [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] - - D.2 Rehabilitation of Crowborough WWTW 5,108,014 7,519,615 - - - 2,554,007 2,554,007 - - - - - - - 3,759,808 3,759,808 - - - i Rehabilitation of Inlet Works - - - - Replacement of the Main Intake Coarse Screens, 1.2m x 2.0m (approx)* nos 3 4,000 12,000 3 4,000 12,000 6,000 6,000 6,000 6,000 Replacement of the Main Intake Fine Screens, 1.2m x 2.0m (approx)* nos 3 5,000 15,000 3 5,000 15,000 7,500 7,500 7,500 7,500 Replacement of Intake Sluice Gates, 1.2m x 2.0m* nos 7 2,500 17,500 7 2,500 17,500 8,750 8,750 8,750 8,750 Rehabilitationof Grit Tanks sum 1 10,000 10,000 1 10,000 10,000 5,000 5,000 5,000 5,000 Installation of mechanical screen nos - 1 25,000 25,000 - - 12,500 12,500 Replacement of Air Lift Pumps* nos 6 6,000 36,000 6 6,000 36,000 18,000 18,000 18,000 18,000 Installation/Replacement of Elevators* nos 1 6,500 6,500 1 6,500 6,500 3,250 3,250 3,250 3,250 Replacement of Flowmeter* nos 1 3,600 3,600 1 12,000 12,000 1,800 1,800 6,000 6,000 Replacement of Compressors for Air Pumps* nos 2 4,500 9,000 2 15,000 30,000 4,500 4,500 15,000 15,000 Enlargement of Intake Works to 110 ML/D sum 1 80,000 80,000 - 40,000 40,000 - - Replacement of LV Switchboard nos 1 3,600 3,600 1 3,600 3,600 1,800 1,800 1,800 1,800 Replacement of Small Power and Lighting sum 1 1,350 1,350 1 3,500 3,500 675 675 1,750 1,750 - - - - ii Rehabilitation of Intake Works: Mufakose - - - - a Replacement of Intake Sluice Gates, 1.2m x 1.5m (approx) sum 2 4,500 9,000 2 4,500 9,000 4,500 4,500 4,500 4,500 b Replacement of the Main Intake Coarse Screens, 1.2m x 2.0m (approx)* nos 2 4,000 8,000 2 4,000 8,000 4,000 4,000 4,000 4,000 c Replacement of the Main Intake Fine Screens, 1.2m x 2.0m (approx)* nos 2 5,000 10,000 2 5,000 10,000 5,000 5,000 5,000 5,000 d Replacement of Flowmeter nos 1 12,000 12,000 2 12,000 24,000 6,000 6,000 12,000 12,000 e Replacement of LV Switchboard nos 1 3,000 3,000 1 3,000 3,000 1,500 1,500 1,500 1,500 f Replacement of Air Lift Pumps nos 6 4,500 27,000 6 4,500 27,000 13,500 13,500 13,500 13,500 g Replacement of Small Power and Lighting sum 1 3,500 3,500 1 3,500 3,500 1,750 1,750 1,750 1,750 h Enlargement and Improvement of Intake Works nos 1 30,000 30,000 15,000 15,000 - - i Replacement of Intake Sluice Gates, 1.2m x 1.5m (approx) sum 3 4,500 13,500 3 4,500 13,500 6,750 6,750 6,750 6,750 j Replacement of Inflow DN 900 Concrete Pipes m 120 250 30,000 15,000 15,000 - - - - - - iii Maintenance/Rehabilitation of PSTs, Trickling Filters and Humas Tanks (Unit 1 & 2) - - - - a Rehabilitation of the Primary Sedimentation Tanks* nos 12 17,628 211,541 - - 105,770 105,770 b Rehabilitation of the Trickling Filters* nos 8 107,553 860,426 - - 430,213 430,213 c Rehabilitation of the Humas Tanks* nos 8 13,904 111,232 - - 55,616 55,616 - - - - iv Replacement/Maintenance/Replacement of Raw Sludge Submersible Pumps Unit 1 - - a Replacement of Raw Sludge Pumps, Q = 95 m3, H = 20 m* nos. 3 30,000 90,000 - - 45,000 45,000 b Installation/Replacement of RW Sludge Pump Controls sum 1 8,000 8,000 1 8,000 8,000 4,000 4,000 4,000 4,000 c Rehabilitation/Replacement of Raw Sludge Pump Delivery Gate Valves, DN 250* nos. - 3 4,064 12,193 - - 6,096 6,096 d Rehabilitation/Replacement of Non-Return Valves, DN 250* nos. - 3 11,065 33,195 - - 16,597 16,597 e Rehabilitation/Replacement of Pressure Gauges* nos. - 3 2,000 6,000 - - 3,000 3,000 f Installation/Rehabilitation of Air Valves nos 3 3,000 9,000 2 3,000 6,000 4,500 4,500 3,000 3,000 g Replacement of Raw Sludge Pump 380 V LV Switchboard nos. 1 12,000 12,000 1 12,000 12,000 6,000 6,000 6,000 6,000 h Replacement of Small Power and Lighting sum 1 3,000 3,000 1 3,000 3,000 1,500 1,500 1,500 1,500 i Repalcement/Rehabilitation overhead Wire Rope Hoist, 3 t nos. 1 8,000 8,000 1 8,000 8,000 4,000 4,000 4,000 4,000 - - - - v Replacement/Maintenance/Replacement of Effluent Pumps to Crowborough Farm - - - - a Replacement of Effluent Pumps, Q = 1500 m3, H = 60 m* nos. 120,000 - 3 54,000 162,000 - - 81,000 81,000 b Installation/Replacement of Effluent Pumps Controls sum 1 10,000 10,000 1 10,000 10,000 5,000 5,000 5,000 5,000 c Replacement of Effluent Pumps Suction Gate Valves, DN 250* nos. 4,064 - 3 4,064 12,193 - - 6,096 6,096 d Replacement of Effluent Pumps Delivery Gate Valves, DN 250* nos. 4,064 - 3 4,064 12,193 - - 6,096 6,096 e Replacement of Non-Return Valves, DN 250* nos. 11,065 - 3 11,065 33,195 - - 16,597 16,597 f Replacement of Pressure Gauges nos. 3 2,000 6,000 3 2,000 6,000 3,000 3,000 3,000 3,000 g Installation/Replacement of Air Valves nos 3 3,000 9,000 3 3,000 9,000 4,500 4,500 4,500 4,500 h Rehabilitation/Replacement of Effluent Pumps 380 V LV Switchboard nos. 1 12,000 12,000 1 7,200 7,200 6,000 6,000 3,600 3,600 i Replacement of Small Power and Lighting sum 1 6,000 6,000 1 6,000 6,000 3,000 3,000 3,000 3,000 j Repalcement/Rehabilitation overhead Wire Rope Hoist, 3 t nos. 1 5,000 5,000 1 3,000 3,000 2,500 2,500 1,500 1,500 k Replacement of Dewatering Pump nos. 1 4,500 4,500 1 4,500 4,500 2,250 2,250 2,250 2,250 - - - - vi Replacement/Maintenance/Replacement of Raw Sludge Surface Pumps to Ingwe Farm - - - - a Rehabilitation/Replacement of Raw Sludge Pumps, Q = 1500 m3, H = 60 m* nos. 2 54,000 108,000 - - 54,000 54,000 b Installation/Rehabilitation/ Replacement of RW Sludge Pump Controls sum 1 8,000 8,000 1 8,000 8,000 4,000 4,000 4,000 4,000 c Rehabilitation/Replacement of Raw SludgePump Suction Gate Valves, DN 500* nos. - 2 28,952 57,904 - - 28,952 28,952 d Rehabilitation/Replacement of Raw Sludge Pump Delivery Gate Valves, DN 450* nos. - 2 22,271 44,542 - - 22,271 22,271 e Rehabilitation/Replacement of Non-Return Valves, DN 450* nos. - 2 28,980 57,960 - - 28,980 28,980 f Rehabilitation/Replacement of Pressure Gauges nos. 3 2,000 6,000 2 2,000 4,000 3,000 3,000 2,000 2,000 g Installation/Maintenance/Rehabilitation of Air Valves nos 2 3,000 6,000 2 3,000 6,000 3,000 3,000 3,000 3,000 h Replacement of 3.3 kV Switchboard nos. 1 262,500 262,500 1 262,500 262,500 131,250 131,250 131,250 131,250 i Replacement of Small Power and Lighting sum 1 6,000 6,000 1 6,000 6,000 3,000 3,000 3,000 3,000 j Repalcement/Rehabilitation overhead Wire Rope Hoist, 3 t nos. 1 5,000 5,000 1 3,000 3,000 2,500 2,500 1,500 1,500 k Replacement of Dewatering Pump nos. 1 4,500 4,500 1 4,500 4,500 2,250 2,250 2,250 2,250 - - - - vii Replacement/Maintenance/Replacement of Raw Sludge Surface Pumps Mufakose - - - - a Rehabilitation/Replacement of Raw Sludge Pumps, Q = 1000 m3, H = 30 m* nos. - 3 54,000 162,000 - - 81,000 81,000 b Installation/Rehabilitation/ Replacement of RW Sludge Pump Controls sum 1 8,000 8,000 1 8,000 8,000 4,000 4,000 4,000 4,000 c Rehabilitation/Replacement of Raw SludgePump Suction Gate Valves, DN 250* nos. - 3 4,000 12,000 - - 6,000 6,000 d Rehabilitation/Replacement of Raw Sludge Pump Delivery Gate Valves, DN 250* nos. - 3 4,000 12,000 - - 6,000 6,000 e Rehabilitation/Replacement of Non-Return Valves, DN 250* nos. - 3 11,065 33,195 - - 16,597 16,597 f Rehabilitation/Replacement of Pressure Gauges nos. 3 2,000 6,000 3 2,000 6,000 3,000 3,000 3,000 3,000 g Installation/Maintenance/Rehabilitation of Air Valves nos 2 3,000 6,000 2 3,000 6,000 3,000 3,000 3,000 3,000 h Rehabilitation/Replacement of Raw Sludge Pump 380 V LV Switchboard nos. 1 8,000 8,000 1 4,800 4,800 4,000 4,000 2,400 2,400 i Replacement/Maintenance/Replacement of Small Power and Lighting sum 1 6,000 6,000 1 6,000 6,000 3,000 3,000 3,000 3,000 j Repalcement/Maintenance/Rehabilitation overhead Wire Rope Hoist, 3 t nos. 1 5,000 5,000 1 3,000 3,000 2,500 2,500 1,500 1,500 k Replacement/Maintenance/Replacement of Dewatering Pump nos. 1 4,500 4,500 1 4,500 4,500 2,250 2,250 2,250 2,250 - - - - viii Rehabilitation/Maintenance/Replacement of Effluent Pump Transmission Pipe and Valves - - - - a ReplacementMaintenance/Replacement of Gate Valve, DN 450 nos. 5 22,271 111,356 5 22,271 111,356 55,678 55,678 55,678 55,678 b ReplacementMaintenance/Replacement of NRV, DN 450 nos. 1 28,980 28,980 1 28,980 28,980 14,490 14,490 14,490 14,490 c ReplacementMaintenance/Replacement of Steel Pipe, DN 600 nos. 6,000 250 1,500,000 750,000 750,000 - - - - - - ix Maintenance/Rehabilitation of PSTs and Clarifiers (Unit 3) - - - - a Maintenance/Rehabilitation of the Primary Sedimentation Tanks* nos 6 17,628 105,770 - - 52,885 52,885 b Maintenance/Rehabilitation of the Clarifiers* nos 3 27,600 82,800 - - 41,400 41,400 - - - - x Replacement/Maintenance/Replacement of Raw Sludge Surface Pumps Unit 3 - - - - D:\Projects\Zimbabwe\InvestmentPlans\WorldBank_GHWSIP_Project\CostEstimates\RealCostEstimates_No Inflation\Investment Programme - HARARE_Real 140522.xlsx 10 of 16 Long Term Projects Medium Term Projects Greater Harare Water and Sanitation Investment Plan Covered under Chinese Exim Bank loan FS/FD Construction Covered under Zim-Fund Phase 1 FS/FD Construction Appendix 9-1: Detailed Investment Cost Estimates - HARARE Item Unit Medium Term (upto 2020) Long Term (upto 2030) 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Qty Rate [USD] Amount Qty Rate [USD] Amount [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] a Rehabilitation/Replacement of Raw Sludge Pumps, Q = 150 m3, H = 20 m nos. 3 30,000 90,000 - - 45,000 45,000 b Installation/Rehabilitation/ Replacement of RW Sludge Pump Controls sum 1 8,000 8,000 1 8,000 8,000 4,000 4,000 4,000 4,000 c Rehabilitation/Replacement of Raw SludgePump Suction Gate Valves, DN 250* nos. - 3 22,440 67,320 - - 33,660 33,660 d Rehabilitation/Replacement of Raw Sludge Pump Delivery Gate Valves, DN 250* nos. - 3 22,440 67,320 - - 33,660 33,660 e Rehabilitation/Replacement of Non-Return Valves, DN 250* nos. - 3 - - - - - - f Rehabilitation/Replacement of Pressure Gauges nos. 3 2,000 6,000 3 2,000 6,000 3,000 3,000 3,000 3,000 g Installation/Maintenance/Rehabilitation of Air Valves nos 2 3,000 6,000 2 3,000 6,000 3,000 3,000 3,000 3,000 h Rehabilitation/Replacement of Raw Sludge Pump 380 V LV Switchboard nos. 1 8,000 8,000 1 4,800 4,800 4,000 4,000 2,400 2,400 i Replacement/Maintenance/Replacement of Small Power and Lighting sum 1 6,000 6,000 1 6,000 6,000 3,000 3,000 3,000 3,000 j Repalcement/Maintenance/Rehabilitation overhead Wire Rope Hoist, 3 t nos. 1 5,000 5,000 1 3,000 3,000 2,500 2,500 1,500 1,500 k Replacement/Maintenance/Replacement of Dewatering Pump nos. 1 4,500 4,500 1 4,500 4,500 2,250 2,250 2,250 2,250 - - - xi Maintenance/Rehabilitation of BNR Unit 3 - - - a Maintenance/Rehabilitation of BNR Unit* sum - 3 183,000 549,000 - - 274,500 274,500 b Replacement of RAS Pump, kW = 11 nos 3 25,000 75,000 3 25,000 75,000 37,500 37,500 37,500 37,500 c Replacement/Rehabilitation of RAS Pump Delivery Valves, DN 250 nos. 3 4,064 12,193 3 2,439 7,316 6,096 6,096 3,658 3,658 d Replacement/Rehabilitation of RAS Pump Non-Return Valves, DN 250 nos. 3 4,064 12,193 3 2,439 7,316 6,096 6,096 3,658 3,658 e Replacement of Ras Pump Pressure Gauges nos. 3 2,000 6,000 3 2,000 6,000 3,000 3,000 3,000 3,000 f Installation/Maintenance/Rehabilitation of RAS Pump Air Valves nos 3 3,000 9,000 3 3,000 9,000 4,500 4,500 4,500 4,500 g Replacement of WAS Pump, kW = 5.5 nos 3 18,000 54,000 3 18,000 54,000 27,000 27,000 27,000 27,000 h Replacement/Rehabilitation of WAS Pump Delivery Valves, DN 200 nos. 3 2,226 6,678 3 1,336 4,007 3,339 3,339 2,003 2,003 i Replacement/Rehabilitation of WAS Pump Non-Return Valves, DN 200 nos. 3 2,226 6,678 3 1,336 4,007 3,339 3,339 2,003 2,003 j Replacement/Replacement of Was Pump Pressure Gauges nos. 3 2,000 6,000 3 2,000 6,000 3,000 3,000 3,000 3,000 k Installation/Rehabilitation of WAS Pump Air Valves nos 3 1,500 4,500 3 1,500 4,500 2,250 2,250 2,250 2,250 l Replacement/Rehabilitation of RAS & Was Pump 380 V LV Switchboard nos. 1 16,000 16,000 1 9,600 9,600 8,000 8,000 4,800 4,800 m Rehabilitation of BNR LV Switchboard nos - 1 30,000 30,000 - - 15,000 15,000 n Replacement of Small Power and Lighting sum 1 2,500 2,500 1 2,500 2,500 1,250 1,250 1,250 1,250 o Rehabilitation overhead Wire Rope Hoist, 3.0 t nos. 2 3,500 7,000 2 2,100 4,200 3,500 3,500 2,100 2,100 - - - - xii Rehabilitation/Replacement and Maintenance of Digesters - - - - a Rehabilitation of Primary Digesters nos. 7 61,246 428,719 7 61,246 428,719 214,359 214,359 214,359 214,359 b Rehabilitation of Secondary Digesters nos. 2 29,500 59,000 2 29,500 59,000 29,500 29,500 29,500 29,500 - - - - xiii Rehabilitation/Replacement and Maintenance of Digester Sludge Control Pumps - - - - a Replacement/Maintenance/Replacement of Mixing Pumps, Q = 72, H = 13 m* nos. 20,000 - 4 16,000 64,000 - - 32,000 32,000 b Installation/Maintenance/Rehabilitation Mixing Pumps Controls sum 1 2,400 2,400 1 2,400 2,400 1,200 1,200 1,200 1,200 c Maintenance/Rehabilitation of Mixing Pumps Suction Gate Valves, DN 150* nos. 1,309 - 4 785 3,142 - - 1,571 1,571 d Replacement/Maintenance/Rehabilitation of Mixing Pumps Delivery Gate Valves, DN 150* nos. 1,309 - 4 785 3,142 - - 1,571 1,571 e Replacement/Maintenance/Rehabilitation of Mixing Pumps Non-Return Valves, DN 150* nos. 2,982 - 4 1,789 7,157 - - 3,578 3,578 f Replacement/Maintenance/Replacement of Mixing PumpsPressure Gauges* nos. 2,000 - 8 1,200 9,600 - - 4,800 4,800 g Replacement/Maintenance/Rehabilitation of Mixing Pumps Air Valves* nos 1,200 - 4 1,200 4,800 - - 2,400 2,400 h Replacement/Maintenance/Replacement of Injection Pumps, Q = 108, H = 39 m* nos. 25,000 - 4 25,000 100,000 - - 50,000 50,000 i Installation/Maintenance/Rehabilitation Injection Pumps Controls sum 1 2,400 2,400 1 2,400 2,400 1,200 1,200 1,200 1,200 j Replacement/Maintenance/Rehabilitation of Injection Pumps Suction Gate Valves, DN 150* nos. 1,309 - 4 785 3,142 - - 1,571 1,571 k Replacement/Maintenance/Rehabilitation of Injection Pumps Delivery Gate Valves, DN 150 nos. 4 1,309 5,236 4 785 3,142 2,618 2,618 1,571 1,571 l Replacement/Maintenance/Rehabilitation of Injection Pumps Non-Return Valves, DN 150 nos. 4 2,982 11,928 4 1,789 7,157 5,964 5,964 3,578 3,578 m Replacement/Maintenance/Rehabilitation of Injection Pumps Pressure Gauges nos. 8 1,200 9,600 8 1,200 9,600 4,800 4,800 4,800 4,800 n Replacement/Maintenance/Rehabilitation of Injection Pumps Air Valves nos 4 1,200 4,800 4 1,200 4,800 2,400 2,400 2,400 2,400 o ReplacementMaintenance/Rehabilitation of Mixing and Injection Pumps 380 V LV Switchboard* nos. 9,600 - 1 9,600 9,600 - - 4,800 4,800 p Replacement/Maintenance/Replacement of Small Power and Lighting sum 1 6,000 6,000 1 6,000 6,000 3,000 3,000 3,000 3,000 q Replacement/Maintenance/Replacement overhead Wire Rope Hoist, 3 t nos. 1 6,000 6,000 1 6,000 6,000 3,000 3,000 3,000 3,000 r Replacement/Maintenance/Replacement of Dewatering Pumps nos. 2 4,500 9,000 2 4,500 9,000 4,500 4,500 4,500 4,500 - - - - xiv Rehabilitation/Replacement and Maintenance of Heat Exchanger - - - - a Replacement of Boilers* nos 3 30,000 90,000 3 100,000 300,000 45,000 45,000 150,000 150,000 b Replacement of Heat Effluent Pumps, kW = 11 nos. 3 3,600 10,800 3 12,000 36,000 5,400 5,400 18,000 18,000 c Installation/Rehabilitation Heat Effluent Pumps Controls sum 1 2,400 2,400 1 2,400 2,400 1,200 1,200 1,200 1,200 d Rehabilitation of Heat Effluent Pumps Suction Gate Valves, DN 150 nos. 3 236 707 3 785 2,356 353 353 1,178 1,178 e Rehabilitation of Heat Effluent Pumps Delivery Gate Valves, DN 150 nos. 3 236 707 3 785 2,356 353 353 1,178 1,178 f Rehabilitation of Heat Effluent Pumps Non-Return Valves, DN 150 nos. 3 895 2,684 3 2,982 8,946 1,342 1,342 4,473 4,473 g Replacement of Heat Effluent Pumps Pressure Gauges nos. 6 360 2,160 6 1,200 7,200 1,080 1,080 3,600 3,600 h Rehabilitation of Heat Effluent Pumps Air Valves nos 2 600 1,200 2 1,200 2,400 600 600 1,200 1,200 i Replacement of Recirculation Pumps, kW = 2.2 nos. 2 2,700 5,400 2 9,000 18,000 2,700 2,700 9,000 9,000 j Installation/Rehabilitation Recirculation Pumps Controls sum 1 2,400 2,400 1 2,400 2,400 1,200 1,200 1,200 1,200 k Rehabilitation of Recirculation Pumps Suction Gate Valves, DN 150 nos. 2 236 471 2 785 1,571 236 236 785 785 l Rehabilitation of Recirculation Pumps Delivery Gate Valves, DN 150 nos. 2 236 471 2 785 1,571 236 236 785 785 m Rehabilitation of Recirculation Pumps Non-Return Valves, DN 150 nos. 2 895 1,789 2 2,982 5,964 895 895 2,982 2,982 n Rehabilitation of Recirculation Pumps Pressure Gauges nos. 4 360 1,440 4 1,200 4,800 720 720 2,400 2,400 o Rehabilitation of Recirculation Pumps Air Valves nos 2 600 1,200 2 1,200 2,400 600 600 1,200 1,200 p Rehabilitation of Heat Effluent and Circulation Pumps 380 V LV Switchboard nos. 1 2,880 2,880 1 9,600 9,600 1,440 1,440 4,800 4,800 q Replacement of Small Power and Lighting sum 1 6,000 6,000 1 6,000 6,000 3,000 3,000 3,000 3,000 r Replacement/Rehabilitation overhead Wire Rope Hoist, 3 t nos. 1 6,000 6,000 1 3,600 3,600 3,000 3,000 1,800 1,800 s Replacement of Dewatering Pumps nos. 1 4,500 4,500 1 4,500 4,500 2,250 2,250 2,250 2,250 - - - - xv Maintenance/Rehabilitation of Gas Holders - - - - a Replacement/Rehabilitation of Gas Holders nos 2 53,297 106,595 2 53,297 106,595 53,297 53,297 53,297 53,297 b Replacement of Burner nos 1 15,000 15,000 1 15,000 15,000 7,500 7,500 7,500 7,500 - - - - xvi Rehabilitation/Relacement of Power Transformers and Switchgear - - - - a Replace/Rehabilitation of Transformers, 2 MVA, 33/3.3 kV nos. 3 80,000 240,000 4 150,000 600,000 120,000 120,000 300,000 300,000 b Replace/Rehabilitation of Transformer, 500 kVA, 11/0.40 kV nos. 4 30,000 120,000 3 120,000 360,000 60,000 60,000 180,000 180,000 c Replace/Rehabilitation 33 kV Switchboard (4 nr VCBs) nos. 1 50,000 50,000 1 30,000 30,000 25,000 25,000 15,000 15,000 d Replace/Rehabilitation 11 kV Switchboard (4 nr VCBs) nos. 1 80,000 80,000 1 38,000 38,000 40,000 40,000 19,000 19,000 e Rehabilitation/Replacement of Transformer, 0.2 MVA, 11/0.40 kV nos. 1 60,000 60,000 1 20,000 20,000 30,000 30,000 10,000 10,000 f Replacement/Maintenance/Rehabilitation of Swiychgear Components sum 1 90,000 90,000 1 54,000 54,000 45,000 45,000 27,000 27,000 - - - - xvii Miscellaneous - - - - a Security lights and fence sum 1 68,000 68,000 1 50,000 50,000 34,000 34,000 25,000 25,000 b Rehabilitation/Replacement of Standby Generators sum 1 60,000 60,000 1 60,000 60,000 30,000 30,000 30,000 30,000 c Rehabilitation of Office and Workshop Buildings Incl. Electrical and Mechanical Works sum 1 90,000 90,000 1 177,000 177,000 45,000 45,000 88,500 88,500 d Rehabilitation of Roads sum 1 200,000 200,000 1 200,000 200,000 100,000 100,000 100,000 100,000 e Supply and Delivery/Replacement of Vehicles sum 1 225,000 225,000 1 225,000 225,000 112,500 112,500 112,500 112,500 f Supply and Delivery/Replacement of Tractors and Plant sum 1 174,000 174,000 1 174,000 174,000 87,000 87,000 87,000 87,000 D:\Projects\Zimbabwe\InvestmentPlans\WorldBank_GHWSIP_Project\CostEstimates\RealCostEstimates_No Inflation\Investment Programme - HARARE_Real 140522.xlsx 11 of 16 Long Term Projects Medium Term Projects Greater Harare Water and Sanitation Investment Plan Covered under Chinese Exim Bank loan FS/FD Construction Covered under Zim-Fund Phase 1 FS/FD Construction Appendix 9-1: Detailed Investment Cost Estimates - HARARE Item Unit Medium Term (upto 2020) Long Term (upto 2030) 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Qty Rate [USD] Amount Qty Rate [USD] Amount [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] g Supply and Delivery/Replacement of Laboratory Equipment sum 1 40,000 40,000 1 40,000 40,000 20,000 20,000 20,000 20,000 h Supply and Delivery/Replacement of SCADA and Radio Communication Systems sum 1 125,000 125,000 1 125,000 125,000 62,500 62,500 62,500 62,500 - - D.3 Rehabilitation of Hatcliff WWTW 604,092 771,112 - - - 302,046 302,046 - - - - - - - 385,556 385,556 - - - i Rehabilitation/Maintenance/Rehabilitation of Intake Works a Modification and Extension/Rehabilitation of Intake Civil Works sum 1 20,000 20,000 1 6,000 6,000 10,000 10,000 3,000 3,000 b Replacement of the Main Intake Coarse Screens nos 2 4,000 8,000 3 4,000 12,000 4,000 4,000 6,000 6,000 c Replacement of the Main Intake Fine Screens nos 2 5,000 10,000 3 5,000 15,000 5,000 5,000 7,500 7,500 d Replacement of Intake Sluice Gates nos 8 10,000 80,000 7 2,500 17,500 40,000 40,000 8,750 8,750 e Construction of Grit Tanks/Rehabilitationof Grit Tanks sum 1 15,000 15,000 1 9,000 9,000 7,500 7,500 4,500 4,500 f Installation of mechanical screen nos - 1 25,000 25,000 - - 12,500 12,500 g Installation/Replacement of Air Lift Pumps nos 3 9,000 27,000 6 6,000 36,000 13,500 13,500 18,000 18,000 h Installation/Replacement of Compressors for Air Pumps nos 2 16,000 32,000 2 16,000 32,000 16,000 16,000 16,000 16,000 i Installation/Replacement of Elevator nos 1 6,500 6,500 1 6,500 6,500 3,250 3,250 3,250 3,250 j Replacement of Flowmeter nos 1 12,000 12,000 1 12,000 12,000 6,000 6,000 6,000 6,000 k Replacement of LV Switchboard nos 1 4,000 4,000 1 4,000 4,000 2,000 2,000 2,000 2,000 l Replacement of Small Power and Lighting sum 1 4,500 4,500 1 4,500 4,500 2,250 2,250 2,250 2,250 - - - - ii Rehabilitation of BNR Unit* - - - - a Rehabilitation of BNR Unit sum 1 29,700 29,700 1 99,000 99,000 14,850 14,850 49,500 49,500 b Replacement of RAS Pump nos 2 5,400 10,800 3 18,000 54,000 5,400 5,400 27,000 27,000 c Replacement of RAS Pump Delivery Valves, DN 200 nos. 2 668 1,336 3 2,226 6,678 668 668 3,339 3,339 d Replacement of RAS Pump Non-Return Valves, DN 200 nos. 2 668 1,336 3 2,226 6,678 668 668 3,339 3,339 e Replacement of Ras Pump Pressure Gauges nos. 2 600 1,200 3 2,000 6,000 600 600 3,000 3,000 f Rehabilitation of RAS Pump Air Valves nos 2 900 1,800 3 3,000 9,000 900 900 4,500 4,500 g Replacement of Axial Pumps nos 2 4,800 9,600 3 16,000 48,000 4,800 4,800 24,000 24,000 h Rehabilitation of Axial Pump Delivery Valves, DN 200 nos. 2 668 1,336 3 2,226 6,678 668 668 3,339 3,339 i Replacement of Axial Pump Non-Return Valves, DN 200 nos. 2 668 1,336 3 2,226 6,678 668 668 3,339 3,339 j Replacement of Axial Pump Pressure Gauges nos. 2 600 1,200 3 2,000 6,000 600 600 3,000 3,000 k Rehabilitation of Axial Pump Air Valves nos 2 900 1,800 3 3,000 9,000 900 900 4,500 4,500 l Rehabilitation of RAS & Axial Pump 380 V LV Switchboard nos. 1 4,800 4,800 1 16,000 16,000 2,400 2,400 8,000 8,000 m Replacement of Small Power and Lighting sum 1 1,350 1,350 1 4,500 4,500 675 675 2,250 2,250 - - - - iii Maintenance/Rehabilitation of Clarifiers Unit - - - - Rehabilitation of Clarifiers* nos 1 40,900 40,900 - - 20,450 20,450 - - - - iv Miscellaneous - - - - a Replacement of Transformer, 500 kVA, 11/0.40 kV nos. 1 30,000 30,000 1 18,000 18,000 15,000 15,000 9,000 9,000 b Replacement of Security Lights sum 1 7,500 7,500 1 7,500 7,500 3,750 3,750 3,750 3,750 c Replacement of Security Fence m 500 75 37,500 300 75 22,500 18,750 18,750 11,250 11,250 d Installation/Replacement of Generator, 300 kVA nos 1 50,000 50,000 1 50,000 50,000 25,000 25,000 25,000 25,000 e Rehabilitation of Office and Workshop Buildings Incl. Electrical and Mechanical Works sum 1 18,000 18,000 1 24,000 24,000 9,000 9,000 12,000 12,000 f Rehabilitation of Road/Compound m2 900 15 13,500 6,750 6,750 - - g Supply and Delivery/Replacement of Vehicles sum 1 35,000 35,000 1 35,000 35,000 17,500 17,500 17,500 17,500 h Supply and Delivery/Replacement of Tractors and Plant Sum 1 87,000 87,000 1 94,000 94,000 43,500 43,500 47,000 47,000 i Supply and Delivery/Replacement of Laboratory Equipment sum 1 4,000 4,000 1 4,000 4,000 2,000 2,000 2,000 2,000 j Supply and Delivery/Replacement of SCADA and Radio Communication Systems sum 1 35,000 35,000 1 17,500 17,500 17,500 17,500 8,750 8,750 D.4 Rehabilitation of AVONLEA Sewage Pump Stations 460,058 363,130 - - - 230,029 230,029 - - - - - - - 181,565 181,565 - - - i Rehabilitation of Pump Sump - - - - a Rehabilitation of Pump Sump, 29.4x2 m3 nos 2 4,500 9,000 2 4,500 9,000 4,500 4,500 4,500 4,500 b Replacement of Winch Retriving System for Solids nos 1 6,000 6,000 1 6,000 6,000 3,000 3,000 3,000 3,000 c Replacement of Screen nos 1 4,000 4,000 1 4,000 4,000 2,000 2,000 2,000 2,000 d Replacement of Penstock Gate nos 1 3,500 3,500 1 3,500 3,500 1,750 1,750 1,750 1,750 e Replacement of ladder nos 1 3,500 3,500 1 3,500 3,500 1,750 1,750 1,750 1,750 - - - - ii Replacement/Maintenance/Replacement of Sewage Pump, No. 2 - - - - a Replacement of Vertical Turbine Sewage Pumps, Q = 736 m3/h, H = 38 m nos 1 100,000 100,000 1 100,000 100,000 50,000 50,000 50,000 50,000 b Replacement of SewagePumps Controls sum 1 3,000 3,000 1 3,000 3,000 1,500 1,500 1,500 1,500 c Replacement of Sewage Pumps Main Delivery Gate Valves, DN 300 nos. 1 5,502 5,502 1 5,502 5,502 2,751 2,751 2,751 2,751 d Replacement of Non-Return Valves, DN 300 nos. 1 13,799 13,799 1 13,799 13,799 6,900 6,900 6,900 6,900 e Replacement of Pressure Gauges nos. 1 2,000 2,000 1 2,000 2,000 1,000 1,000 1,000 1,000 f Installation/Replacement of Air Valves nos 1 3,000 3,000 1 3,000 3,000 1,500 1,500 1,500 1,500 g Replacement of Sewage Pumps 380 V LV Switchboard nos. 1 12,000 12,000 1 7,200 7,200 6,000 6,000 3,600 3,600 h Replacement of Small Power and Lighting sum 1 4,500 4,500 1 4,500 4,500 2,250 2,250 2,250 2,250 i Repalcement/Rehabilitation overhead Wire Rope Hoist, 3 t nos. 1 5,000 5,000 1 3,000 3,000 2,500 2,500 1,500 1,500 j Replacement of Dewatering Pump nos. 1 4,500 4,500 1 4,500 4,500 2,250 2,250 2,250 2,250 - - iii Replacement/Maintenance/Replacement of Sewage Pump, No. 3 and No 4 - - a Replacement/Maintenance/Replacement of Vertical Turbine Sewer Pumps, Q = 368 m3/h, H = 38 m nos 2 54,000 108,000 1 54,000 54,000 54,000 54,000 27,000 27,000 b Replacement/Rehabilitation/ Replacement of Sewer Pumps Controls sum 1 9,000 9,000 1 9,000 9,000 4,500 4,500 4,500 4,500 c Replacement/Rehabilitation/Replacement of Sewer Pumps Main Delivery Gate Valves, DN 250 nos. 2 4,064 8,128 1 4,064 4,064 4,064 4,064 2,032 2,032 d Replacement/Rehabilitation/Replacement of Non-Return Valves, DN 250 nos. 2 4,064 8,128 1 4,064 4,064 4,064 4,064 2,032 2,032 e Replacement/Rehabilitation/Replacement of Pressure Gauges nos. 2 2,000 4,000 1 2,000 2,000 2,000 2,000 1,000 1,000 f Installation/Maintenance/Replacement of Air Valves nos 2 3,000 6,000 1 3,000 3,000 3,000 3,000 1,500 1,500 - - - - iv Miscellaneous - - - - a Rehabilitation/Replacement/Rehabilitation of Transformer, 750 kVA, 11/0.40 kV nos. 1 38,000 38,000 1 38,000 38,000 19,000 19,000 19,000 19,000 b Installation/Maintenance/Replacement of Generator, 100 kVA (for 1 smaller pump and dewatering pump) nos 1 25,000 25,000 1 25,000 25,000 12,500 12,500 12,500 12,500 c Rehabilitation/Maintenance of Office and Workshop Buildings Incl. Electrical and Mechanical Works sum 1 9,500 9,500 1 9,500 9,500 4,750 4,750 4,750 4,750 d Rehabilitation/Rehabilitation of Road/Compound sum 1 3,000 3,000 1,500 1,500 - - e Supply and Delivery/Maintenance/Replacement of Vehicles sum 1 35,000 35,000 1 35,000 35,000 17,500 17,500 17,500 17,500 f Supply and Delivery/Maintenance/Replacement of Lawn Mover nos 1 7,000 7,000 1 7,000 7,000 3,500 3,500 3,500 3,500 g Supply and Delivery/Maintenance/Replacement of SCADA and Radio Communication Systems sum 1 20,000 20,000 10,000 10,000 - - - - D.5 Rehabilitation of BUDIRIRO Sewage Pump Station 485,000 1,019,762 - - - 242,500 242,500 - - - - - - - 509,881 509,881 - - - i Rehabilitation of Intake Works a Replacement of the Main Intake Coarse Screens nos 2 4,000 8,000 3 4,000 12,000 4,000 4,000 6,000 6,000 b Replacement of the Main Intake Fine Screens nos 2 5,000 10,000 3 5,000 15,000 5,000 5,000 7,500 7,500 c Replacement of Intake Sluice Gates nos 8 10,000 80,000 7 2,500 17,500 40,000 40,000 8,750 8,750 d Construction of Grit Tanks/Rehabilitationof Grit Tanks sum 1 15,000 15,000 1 9,000 9,000 7,500 7,500 4,500 4,500 e Installation of mechanical screen nos - 1 25,000 25,000 - - 12,500 12,500 f Installation/Replacement of Air Lift Pumps nos 3 9,000 27,000 6 6,000 36,000 13,500 13,500 18,000 18,000 g Installation/Replacement of Compressors for Air Pumps nos 2 16,000 32,000 2 16,000 32,000 16,000 16,000 16,000 16,000 h Installation/Replacement of Elevator nos 1 6,500 6,500 1 6,500 6,500 3,250 3,250 3,250 3,250 i Replacement/Replacement of Flowmeter nos 1 12,000 12,000 1 12,000 12,000 6,000 6,000 6,000 6,000 D:\Projects\Zimbabwe\InvestmentPlans\WorldBank_GHWSIP_Project\CostEstimates\RealCostEstimates_No Inflation\Investment Programme - HARARE_Real 140522.xlsx 12 of 16 Long Term Projects Medium Term Projects Greater Harare Water and Sanitation Investment Plan Covered under Chinese Exim Bank loan FS/FD Construction Covered under Zim-Fund Phase 1 FS/FD Construction Appendix 9-1: Detailed Investment Cost Estimates - HARARE Item Unit Medium Term (upto 2020) Long Term (upto 2030) 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Qty Rate [USD] Amount Qty Rate [USD] Amount [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] j Replacement/Replacement of LV Switchboard nos 1 4,000 4,000 1 4,000 4,000 2,000 2,000 2,000 2,000 k Replacement of Small Power and Lighting sum 1 4,500 4,500 1 4,500 4,500 2,250 2,250 2,250 2,250 - - - - ii Rehabilitation of Pump Sump - - - - a Rehabilitation of Pump Sump* nos 1 10,000 10,000 - - 5,000 5,000 b Replacement of Penstock Gates and Gate Valves * sum 1 12,000 12,000 - - 6,000 6,000 c Replacement of ladder* nos 1 2,000 2,000 - - 1,000 1,000 - - - - iii Replacement of Sewage Surface Pumps - - - - a Replacement/Replacement of Horizontal Spli Casing Sewage Pumps, Q = 750 m3/h, H = 60 m* nos - 3 110,000 330,000 - - 165,000 165,000 b Replacement/ Replacement of Sewage Pumps Controls* sum - 1 10,000 10,000 - - 5,000 5,000 c Replacement of Sewage Pumps Main Suction Gate Valve, DN 300* nos. - 1 5,502 5,502 - - 2,751 2,751 d Replacement of Sewage Pumps Suction Gate Valves, DN 300* nos. - 3 5,502 16,506 - - 8,253 8,253 e Replacement of Sewage Pumps Main Delivery Gate Valves, DN 450* nos. - 3 22,271 66,814 - - 33,407 33,407 f Replacement of Non-Return Valves, DN 300* nos. - 3 28,980 86,940 - - 43,470 43,470 g Rehabilitation/Replacement of Pressure Gauges nos. 6 3,000 18,000 6 3,000 18,000 9,000 9,000 9,000 9,000 h Installation/Replacement of Air Valves nos 3 4,500 13,500 3 4,500 13,500 6,750 6,750 6,750 6,750 iii Replacement of Sewage Pumps 380 V LV Switchboard* nos. - 1 12,000 12,000 - - 6,000 6,000 j Replacement of Small Power and Lighting* sum - 1 4,500 4,500 - - 2,250 2,250 k Rehabilitation overhead Wire Rope Hoist, 3 t nos. 1 8,000 8,000 1 6,000 6,000 4,000 4,000 3,000 3,000 l Replacement of Dewatering Pump* nos. 2 4,500 9,000 - - 4,500 4,500 - - iv Miscellaneous - - a Replacement of Transformer, 500 kVA, 11/0.40 kV nos. 1 30,000 30,000 1 30,000 30,000 15,000 15,000 15,000 15,000 b Rehabilitation/Replacement of Security Lights and Fence sum 1 4,500 4,500 1 4,500 4,500 2,250 2,250 2,250 2,250 c Installation/Replacement of Generator, 135 kVA (for 1 pump, dewatering pump and security lights) nos 1 27,000 27,000 1 27,000 27,000 13,500 13,500 13,500 13,500 d Rehabilitation of Office and Workshop Buildings Incl. Electrical and Mechanical Works sum 1 18,000 18,000 1 24,000 24,000 9,000 9,000 12,000 12,000 e Rehabilitation/Rehabilitation of Road/Compound m2 600 15 9,000 4,500 4,500 - - f Supply and Delivery/Replacement of Vehicles sum 1 35,000 35,000 1 35,000 35,000 17,500 17,500 17,500 17,500 g Supply and Delivery/Replacement of Tractors and Plant sum 1 94,000 94,000 1 94,000 94,000 47,000 47,000 47,000 47,000 h Supply and Delivery/Replacement of Laboratory Equipment sum 1 4,000 4,000 1 4,000 4,000 2,000 2,000 2,000 2,000 i Supply and Delivery/Replacement of SCADA and Radio Communication Systems sum 1 25,000 25,000 1 25,000 25,000 12,500 12,500 12,500 12,500 - - D.6 Rehabilitation of MT PLEASANT NE Sewage Pump Station 571,797 559,797 - - - 285,899 285,899 - - - - - - - 279,899 279,899 - - - i Rehabilitation of Pump Sump a Rehabilitation/Maintenance/Rehabilitation of Pump Sump nos 2 5,000 10,000 2 5,000 10,000 5,000 5,000 5,000 5,000 b Replacement/Maintenance/Replacement of Winch Retriving System for Solids nos 1 6,000 6,000 1 6,000 6,000 3,000 3,000 3,000 3,000 c Replacement/Maintenance/Replacement of Screen nos 2 4,000 8,000 1 4,000 4,000 4,000 4,000 2,000 2,000 d Replacement/Maintenance/Replacement of Penstock Gate nos 1 3,500 3,500 1 3,500 3,500 1,750 1,750 1,750 1,750 e Replacement/Maintenance/Replacement of ladder nos 1 3,500 3,500 1 3,500 3,500 1,750 1,750 1,750 1,750 f Replacement/Maintenance/Replacement of Gate Valve, DN 300 nos 1 5,502 5,502 1 5,502 5,502 2,751 2,751 2,751 2,751 - - - - ii Replacement/Maintenance/Replacement of Sewage Surface Pumps - - - - a Replacement/Maintenance/Replacement of Vertical Turbine Sewage Pumps, Q = 298 m3/h, H = 45 m nos 3 54,000 162,000 3 54,000 162,000 81,000 81,000 81,000 81,000 b Replacement/Rehabilitation/ Replacement of SewagePumps Controls sum 1 3,000 3,000 1 3,000 3,000 1,500 1,500 1,500 1,500 c Replacement/Rehabilitation/Replacement of Sewage Pumps Main Suction Gate Valve, DN 300 nos. 1 5,502 5,502 1 5,502 5,502 2,751 2,751 2,751 2,751 d Replacement/Rehabilitation/Replacement of Sewage Pumps Suction Gate Valves, DN 225 nos. 3 4,064 12,193 3 4,064 12,193 6,096 6,096 6,096 6,096 e Replacement/Rehabilitation/Replacement of Sewage Pumps Main Delivery Gate Valves, DN 150 nos. 3 17,261 51,782 3 17,261 51,782 25,891 25,891 25,891 25,891 f Replacement/Rehabilitation/Replacement of Non-Return Valves, DN 150 nos. 3 1,309 3,927 3 1,309 3,927 1,964 1,964 1,964 1,964 g Replacement/Rehabilitation/Replacement of Pressure Gauges nos. 6 2,982 17,892 6 2,982 17,892 8,946 8,946 8,946 8,946 h Installation/Maintenance/Replacement of Air Valves nos 3 3,000 9,000 3 3,000 9,000 4,500 4,500 4,500 4,500 i Replacement/Maintenance/Replacement of Sewage Pumps 380 V LV Switchboard nos. 1 12,000 12,000 1 7,200 7,200 6,000 6,000 3,600 3,600 j Replacement/Maintenance/Replacement of Small Power and Lighting sum 1 4,500 4,500 1 4,500 4,500 2,250 2,250 2,250 2,250 k Repalcement/Maintenance/Rehabilitation overhead Wire Rope Hoist, 3 t nos. 1 8,000 8,000 1 4,800 4,800 4,000 4,000 2,400 2,400 l Replacement/Maintenance/Replacement of Dewatering Pump nos. 2 4,500 9,000 2 4,500 9,000 4,500 4,500 4,500 4,500 - - - - iii Miscellaneous - - - - a Replacement of Transformer, 750 kVA, 11/0.40 kV nos. 1 38,000 38,000 1 38,000 38,000 19,000 19,000 19,000 19,000 b Rehabilitation/Replacement of Security Lights and Fence sum 1 4,500 4,500 1 4,500 4,500 2,250 2,250 2,250 2,250 c Installation/Replacement of Generator, 100 kVA (for 1 pump, dewatering pump and security lights) nos 1 25,000 25,000 1 25,000 25,000 12,500 12,500 12,500 12,500 d Rehabilitation of Office and Workshop Buildings Incl. Electrical and Mechanical Works sum 1 24,000 24,000 1 24,000 24,000 12,000 12,000 12,000 12,000 e Rehabilitation of Road/Compound m2 1 3,000 3,000 1 3,000 3,000 1,500 1,500 1,500 1,500 f Supply and Delivery/Replacement of Vehicles sum 1 35,000 35,000 1 35,000 35,000 17,500 17,500 17,500 17,500 g Supply and Delivery/Replacement of Tractors and Plant sum 1 87,000 87,000 1 87,000 87,000 43,500 43,500 43,500 43,500 h Supply and Delivery/Replacement of SCADA and Radio Communication Systems sum 1 20,000 20,000 1 20,000 20,000 10,000 10,000 10,000 10,000 D.7 Rehabilitation of NEW MARLBOROUGH Sewage Pump Station 255,434 265,134 - - - 127,717 127,717 - - - - - - - 132,567 132,567 - - - i Rehabilitation of Pump Sump a Rehabilitation/Maintenance/Rehabilitation of Pump Sump nos 2 4,500 9,000 3 4,500 13,500 4,500 4,500 6,750 6,750 b Replacement/Maintenance/Replacement of Screen nos 1 4,000 4,000 3 4,000 12,000 2,000 2,000 6,000 6,000 - - - - ii Replacement/Maintenance/Replacement of Sewage Submersible Pumps - - - - a Replacement of Submersible Sewage Pumps nos 2 25,000 50,000 2 23,000 46,000 25,000 25,000 23,000 23,000 b Replacement of Sewage Pumps Controls sum 1 6,000 6,000 1 6,000 6,000 3,000 3,000 3,000 3,000 c Replacement of Sewage Pumps Main Delivery Gate Valves, DN 250 nos. 2 5,502 11,004 2 5,502 11,004 5,502 5,502 5,502 5,502 d Replacement of Non-Return Valves, DN 250 nos. 2 11,065 22,130 2 11,065 22,130 11,065 11,065 11,065 11,065 e Replacement of Pressure Gauges nos. 2 2,000 4,000 2 2,000 4,000 2,000 2,000 2,000 2,000 f Installation/Replacement of Air Valves nos 2 3,000 6,000 2 3,000 6,000 3,000 3,000 3,000 3,000 g Maintenance/Replacement of Sewage Pumps 380 V LV Switchboard nos. 2 8,000 16,000 2 8,000 16,000 8,000 8,000 8,000 8,000 h Replacement of Small Power and Lighting sum 2 900 1,800 2 3,000 6,000 900 900 3,000 3,000 ii Replacement overhead Wire Rope Hoist, 3 t nos. 1 5,000 5,000 1 5,000 5,000 2,500 2,500 2,500 2,500 j Replacement of Dewatering Pump nos. - 4,500 - - 4,500 - - - - - - - - - iii Miscellaneous - - - - a Supply and Install/Replacement of Transformer, 200 kVA, 11/0.40 kV sum 1 20,000 20,000 1 20,000 20,000 10,000 10,000 10,000 10,000 b Rehabilitation/Replacement of Security Lights and Fence sum 1 4,500 4,500 1 4,500 4,500 2,250 2,250 2,250 2,250 c Installation/Replacement of Generator, 80 kVA (for 1 pump and security lights) sum 1 16,000 16,000 1 16,000 16,000 8,000 8,000 8,000 8,000 d Rehabilitation of Office and Workshop Buildings Incl. Electrical and Mechanical Works sum 1 15,000 15,000 1 15,000 15,000 7,500 7,500 7,500 7,500 e Rehabilitation of Road/Compound sum 1 3,000 3,000 1,500 1,500 - - f Supply and Delivery/Replacement of Vehicles sum 1 35,000 35,000 1 35,000 35,000 17,500 17,500 17,500 17,500 g Supply and Delivery/Maintenance/Replacement of Lawn Mover sum 1 7,000 7,000 1 7,000 7,000 3,500 3,500 3,500 3,500 h Supply and Delivery/Replacement of SCADA and Radio Communication Systems sum 1 20,000 20,000 1 20,000 20,000 10,000 10,000 10,000 10,000 - - D.8 Rehabilitation of BORROWDALE BROOK Sewage Pump Station 636,859 723,965 - - - - 318,430 318,430 - - - - - - - 361,983 361,983 - - - i Rehabilitation of Pump Sump - Pump Station, No. 01* - - - - a Rehabilitation/Rehabilitation of Pump Sump nos 2 4,500 9,000 - - 4,500 4,500 b Rehabilitation/Rehabilitation of Screen nos 2 4,000 8,000 - - 4,000 4,000 D:\Projects\Zimbabwe\InvestmentPlans\WorldBank_GHWSIP_Project\CostEstimates\RealCostEstimates_No Inflation\Investment Programme - HARARE_Real 140522.xlsx 13 of 16 Long Term Projects Medium Term Projects Greater Harare Water and Sanitation Investment Plan Covered under Chinese Exim Bank loan FS/FD Construction Covered under Zim-Fund Phase 1 FS/FD Construction Appendix 9-1: Detailed Investment Cost Estimates - HARARE Item Unit Medium Term (upto 2020) Long Term (upto 2030) 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Qty Rate [USD] Amount Qty Rate [USD] Amount [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] c Rehabilitation/Replacement of Gate Valves, DN 225 nos 2 3,500 7,000 - - 3,500 3,500 d Rehabilitation/Replacement of ladder nos 2 3,500 7,000 - - 3,500 3,500 - - - - ii Rehabilitation of Pump Sump - Pump Stations Nos. 02 - 04* - - - - a Rehabilitation/Rehabilitation of Pump Sump, 10.9 m3 nos 3 4,500 13,500 - - 6,750 6,750 b Rehabilitation/Replacement of Screen nos 3 4,000 12,000 - - 6,000 6,000 c Rehabilitation/Replacement of Gate Valves, DN 225 nos 6 3,500 21,000 - - 10,500 10,500 d Rehabilitation/Replacement of ladder nos 3 3,500 10,500 - - 5,250 5,250 - - - - iii Replacement/Maintenance/Replacement of Sewage Pump Station, No. 01 - - - - a Replacement of Vertical Immersible Pump, Q = 160 m3/h, H = m 50 (estimated) nos 1 35,000 35,000 1 25,000 25,000 17,500 17,500 12,500 12,500 b Replacement of Sewage Pumps Controls sum 1 1,800 1,800 1 3,000 3,000 900 900 1,500 1,500 c Rehabilitation/Replacement of Sewage Pumps Suction Gate Valves, DN 200 nos. 1 1,336 1,336 1 2,226 2,226 668 668 1,113 1,113 d Rehabilitation/Replacement of Sewage Pumps Suction Gate Valves, DN 200 nos. 1 1,336 1,336 1 2,226 2,226 668 668 1,113 1,113 e Replacement of Non-Return Valves, DN 200 nos. 1 2,888 2,888 1 4,813 4,813 1,444 1,444 2,407 2,407 f Replacement of Pressure Gauges nos. 2 1,200 2,400 2 2,000 4,000 1,200 1,200 2,000 2,000 g Replacement of Air Valves nos 1 1,800 1,800 1 3,000 3,000 900 900 1,500 1,500 h Replacement of Sewage Pumps 380 V LV Switchboard nos. 1 7,200 7,200 1 12,000 12,000 3,600 3,600 6,000 6,000 iii Replacement of Small Power and Lighting sum 1 2,700 2,700 1 4,500 4,500 1,350 1,350 2,250 2,250 j Rehabilitation overhead Wire Rope Hoist, 3 t nos. 1 3,000 3,000 1 5,000 5,000 1,500 1,500 2,500 2,500 k Replacement of Dewatering Pump nos. 1 2,700 2,700 1 4,500 4,500 1,350 1,350 2,250 2,250 - - - - iv Replacement/Maintenance/Replacement of Sewage Pump Station, No. 02 - 04 - - - - a Maintenance/Replacement of Vertical Immersible Pump, Q = 160 m3/h, H = 50 m (estimated) nos 3 25,000 75,000 3 25,000 75,000 37,500 37,500 37,500 37,500 b Maintenance/ Replacement of Sewage Pumps Controls sum 1 3,000 3,000 1 3,000 3,000 1,500 1,500 1,500 1,500 c Replacement/Rehabilitation/Replacement of Sewage Pumps Suction Gate Valves, DN 150 nos. 3 1,309 3,927 3 1,309 3,927 1,964 1,964 1,964 1,964 d Replacement/Rehabilitation/Replacement of Sewage Pumps Suction Gate Valves, DN 150 nos. 3 1,309 3,927 3 1,309 3,927 1,964 1,964 1,964 1,964 e Maintenance/Replacement of Non-Return Valves, DN 150 nos. 3 2,982 8,946 3 2,982 8,946 4,473 4,473 4,473 4,473 f Maintenance Replacement of Pressure Gauges nos. 6 2,000 12,000 6 2,000 12,000 6,000 6,000 6,000 6,000 g Maintenance/Replacement of Air Valves nos 3 3,000 9,000 3 3,000 9,000 4,500 4,500 4,500 4,500 h Maintenance/Replacement of Sewage Pumps 380 V LV Switchboard nos. 3 8,000 24,000 3 8,000 24,000 12,000 12,000 12,000 12,000 iv Maintenance/Replacement of Small Power and Lighting sum 1 4,500 4,500 1 4,500 4,500 2,250 2,250 2,250 2,250 j Maintenance/Rehabilitation overhead Wire Rope Hoist, 3 t nos. 3 5,000 15,000 3 5,000 15,000 7,500 7,500 7,500 7,500 k Maintenance/Replacement of Dewatering Pump nos. 3 4,500 13,500 3 4,500 13,500 6,750 6,750 6,750 6,750 - - - - v Miscellaneous - - - - a Rehabilitation/Replacement of Transformer, 200 kVA, 11/0.40 kV nos. 1 12,000 12,000 1 20,000 20,000 6,000 6,000 10,000 10,000 b Installation/Replacement of Generator, 60 kVA (for 1 sewage pump and dewatering pump) nos. 4 75,600 302,400 4 75,600 302,400 151,200 151,200 151,200 151,200 c Rehabilitation/Maintenance of Office and Workshop Buildings Incl. Electrical and Mechanical Works sum 1 20,000 20,000 1 28,000 28,000 10,000 10,000 14,000 14,000 d Rehabilitation/Rehabilitation of Road/Compound sum 1 3,000 3,000 1 3,000 3,000 1,500 1,500 1,500 1,500 e Supply and Delivery/Maintenance/Replacement of Vehicles sum 1 35,000 35,000 1 35,000 35,000 17,500 17,500 17,500 17,500 f Supply and Delivery/Maintenance/Replacement of Lawn Mover nos 1 4,500 4,500 1 4,500 4,500 2,250 2,250 2,250 2,250 g Supply and Delivery/Maintenance/Replacement of SCADA and Radio Communication Systems sum 1 25,000 25,000 - 12,500 12,500 - - D.9 Rehabilitation of CHISIPITE Sewage Pump Station 324,170 326,170 - - - 162,085 162,085 - - - - - - - 163,085 163,085 - - - i Rehabilitation of Pump Sump - Old Pump Station - - a Rehabilitation/Rehabilitation of Pump Sump nos 1 4,500 4,500 1 4,500 4,500 2,250 2,250 2,250 2,250 b Replacement/Replacement of Screen nos 1 4,000 4,000 1 4,000 4,000 2,000 2,000 2,000 2,000 c Replacement/Maintenance/Replacement of Valve, DN 225 nos 2 3,500 7,000 2 3,500 7,000 3,500 3,500 3,500 3,500 d Replacement/Replacement of ladder nos 1 3,500 3,500 1 3,500 3,500 1,750 1,750 1,750 1,750 - - - - ii Rehabilitation of Pump Sump - New Pump Station - - - - a Rehabilitation/Rehabilitation of Pump Sump nos 1 4,500 4,500 1 4,500 4,500 2,250 2,250 2,250 2,250 b Installation/Replacement of Screen nos 1 4,000 4,000 1 4,000 4,000 2,000 2,000 2,000 2,000 c Installation/Replacement of Valves, DN 250 nos 2 3,500 7,000 2 3,500 7,000 3,500 3,500 3,500 3,500 d Installation/Replacement of ladder nos 1 3,500 3,500 1 3,500 3,500 1,750 1,750 1,750 1,750 - - - - iii Replacement/Maintenance/Replacement of Old Sewage Pump Station - - - - a Replacement/Replacement of Horizontal Sewage Pumps, Q = 133 m3/h, H = 60 m nos 2 18,000 36,000 2 18,000 36,000 18,000 18,000 18,000 18,000 b Replacement/Replacement of SewagePumps Controls sum 1 6,000 6,000 1 6,000 6,000 3,000 3,000 3,000 3,000 c Replacement/Replacement of Sewage Pumps Suction Gate Valve, DN 80 nos. 2 766 1,532 2 766 1,532 766 766 766 766 d Replacement/Replacement of Sewage Pumps Delivery Gate Valve, DN 80 nos. 2 766 1,532 2 766 1,532 766 766 766 766 e Replacement/Replacement of Non-Return Valves, DN 80 nos. 2 1,500 3,000 2 1,500 3,000 1,500 1,500 1,500 1,500 f Replacement/Replacement of Pressure Gauges nos. 4 1,500 6,000 4 1,500 6,000 3,000 3,000 3,000 3,000 g Installation/Replacement of Air Valves nos 2 3,000 6,000 2 3,000 6,000 3,000 3,000 3,000 3,000 h Replacement/Replacement of Sewage Pumps 380 V LV Switchboard nos. 1 8,000 8,000 1 8,000 8,000 4,000 4,000 4,000 4,000 iii Rehabilitation/Replacement of Small Power and Lighting sum 1 2,000 2,000 1 2,000 2,000 1,000 1,000 1,000 1,000 j Repalcement/Maintenance/Rehabilitation overhead Wire Rope Hoist, 3 t nos. 1 4,000 4,000 1 4,000 4,000 2,000 2,000 2,000 2,000 k Replacement/Maintenance/Replacement of Dewatering Pump nos. 1 4,000 4,000 1 4,000 4,000 2,000 2,000 2,000 2,000 - - - - iv Replacement/Maintenance/Replacement of New Sewage Pump Station. - - - - a Installation/Replacement of Immersible Sewer Pumps, Q = 241 m3/h, H = 60 m nos 2 24,000 48,000 2 24,000 48,000 24,000 24,000 24,000 24,000 b Replacement/Replacement of SewagePumps Controls sum 1 6,000 6,000 1 6,000 6,000 3,000 3,000 3,000 3,000 c Replacement/Replacement of Sewage Pumps Suction Gate Valve, DN 250 nos. 2 4,064 8,128 2 4,064 8,128 4,064 4,064 4,064 4,064 d Replacement/Replacement of Sewage Pumps Delivery Gate Valve, DN 250 nos. 2 4,064 8,128 2 4,064 8,128 4,064 4,064 4,064 4,064 e Replacement/Replacement of Non-Return Valves, DN 250 nos. 2 11,065 22,130 2 11,065 22,130 11,065 11,065 11,065 11,065 f Replacement/Replacement of Pressure Gauges nos. 4 1,500 6,000 4 1,500 6,000 3,000 3,000 3,000 3,000 g Installation/Replacement of Air Valves nos 2 3,000 6,000 2 3,000 6,000 3,000 3,000 3,000 3,000 h Replacement/Replacement of Sewage Pumps 380 V LV Switchboard nos. 1 8,000 8,000 1 8,000 8,000 4,000 4,000 4,000 4,000 i Rehabilitation/Replacement of Small Power and Lighting sum 1 4,500 4,500 1 4,500 4,500 2,250 2,250 2,250 2,250 j Repalcement/Maintenance/Rehabilitation overhead Wire Rope Hoist, 3 t nos. 1 4,000 4,000 1 4,000 4,000 2,000 2,000 2,000 2,000 k Replacement/Maintenance/Replacement of Dewatering Pump nos. 1 4,000 4,000 1 4,000 4,000 2,000 2,000 2,000 2,000 - - - - v Miscellaneous - - - - Rehabilitation/Replacement/Rehabilitation of Transformer, 200 kVA, 11/0.40 kV nos. 1 12,000 12,000 1 20,000 20,000 6,000 6,000 10,000 10,000 Rehabilitation/Maintenance/Replacement of Security Lights and Fence sum 1 10,000 10,000 1 10,000 10,000 5,000 5,000 5,000 5,000 Installation/Replacement of Generator, 60 kVA (for 1 pump, dewatering pump and Security lights) nos 1 28,220 28,220 1 28,220 28,220 14,110 14,110 14,110 14,110 Rehabilitation/Maintenance of Office and Workshop Buildings Incl. Electrical and Mechanical Works sum 1 12,000 12,000 1 12,000 12,000 6,000 6,000 6,000 6,000 Rehabilitation/Rehabilitation of Road/Compound sum 1 6,000 6,000 3,000 3,000 - - Supply and Installatio/Maintenance of SCADA System and PCs sum 1 10,000 10,000 1 10,000 10,000 5,000 5,000 5,000 5,000 Supply and Installation/Maintenance/Replacement of Radio Communication System sum 1 5,000 5,000 1 5,000 5,000 2,500 2,500 2,500 2,500 D.10 Replacement/Upgrading of existing sewer network 31,777,835 - - - - 6,355,567 6,355,567 6,355,567 6,355,567 6,355,567 - - - - - - - - - i Sewer reticulation pipes in some areas (Mbare, CBD, Kuwadzana, Rugare, Westlea etc) ND 150 PVC m 35,484 75 2,661,271 532,254 532,254 532,254 532,254 532,254 - - ND 250 PVC m 3,255 90 292,966 58,593 58,593 58,593 58,593 58,593 - - ND 315 PVC m 3,026 120 363,136 72,627 72,627 72,627 72,627 72,627 - - D:\Projects\Zimbabwe\InvestmentPlans\WorldBank_GHWSIP_Project\CostEstimates\RealCostEstimates_No Inflation\Investment Programme - HARARE_Real 140522.xlsx 14 of 16 Long Term Projects Medium Term Projects Greater Harare Water and Sanitation Investment Plan Covered under Chinese Exim Bank loan FS/FD Construction Covered under Zim-Fund Phase 1 FS/FD Construction Appendix 9-1: Detailed Investment Cost Estimates - HARARE Item Unit Medium Term (upto 2020) Long Term (upto 2030) 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Qty Rate [USD] Amount Qty Rate [USD] Amount [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] - - - - ii Replacement (complete with pipe bridge) of leaking pipe sections on stream/river crossings - - - - ND 250 ST m 75 120 9,000 1,800 1,800 1,800 1,800 1,800 - - ND 300 ST m 670 198 132,660 26,532 26,532 26,532 26,532 26,532 - - ND 375 ST m 75 230 17,250 3,450 3,450 3,450 3,450 3,450 - - ND 450 ST m 300 246 73,800 14,760 14,760 14,760 14,760 14,760 - - ND 525 ST m 200 396 79,200 15,840 15,840 15,840 15,840 15,840 - - ND 600 ST m 880 450 396,000 79,200 79,200 79,200 79,200 79,200 - - ND 675 ST m 250 650 162,500 32,500 32,500 32,500 32,500 32,500 - - ND 750 ST m 270 712 192,240 38,448 38,448 38,448 38,448 38,448 - - ND 875 ST m 150 826 123,900 24,780 24,780 24,780 24,780 24,780 - - ND 1400 ST m 2,390 1,000 2,390,000 478,000 478,000 478,000 478,000 478,000 - - - - iii Trunk sewer upgrades - - ND 450 PVC m 18,630 150 2,794,566 558,913 558,913 558,913 558,913 558,913 ND 525 RC m 13,517 380 5,136,547 1,027,309 1,027,309 1,027,309 1,027,309 1,027,309 ND 600 RC m 6,359 440 2,798,101 559,620 559,620 559,620 559,620 559,620 ND 675 RC m 2,484 530 1,316,769 263,354 263,354 263,354 263,354 263,354 ND 750 RC m 2,896 650 1,882,179 376,436 376,436 376,436 376,436 376,436 ND 825 RC m 3,688 700 2,581,376 516,275 516,275 516,275 516,275 516,275 ND 900 RC m 6,755 760 5,134,142 1,026,828 1,026,828 1,026,828 1,026,828 1,026,828 ND 1050 RC m 2,905 1,030 2,991,923 598,385 598,385 598,385 598,385 598,385 ND 1200 RC m 197 1,260 248,308 49,662 49,662 49,662 49,662 49,662 - - E. EXTENSION OF SEWERAGE SERVICES 119,158,599 278,103,622 7,208,614 7,208,614 7,208,614 41,557,764 41,557,764 7,208,614 7,208,614 17,432,629 17,432,629 17,432,629 17,432,629 17,432,629 52,629,240 52,629,240 50,816,740 17,432,629 17,432,629 E.1 Rehabilitatioin and Decommissioning of Sewage Treatment Works 1,227,500 3,625,000 - - - 613,750 613,750 - - - - - - - 1,812,500 1,812,500 - - - i Donny Brook 1 - - a Short Term Pond Refurbishment and desludging Sum 1 75,000 75,000 - 75,000 - 37,500 37,500 - - Dewatering and drying out Sum - 1 50,000 50,000 - - 25,000 25,000 Sludge excavation and removal m3 - 6,000 50 300,000 - - 150,000 150,000 Dozing of walls and lanscaping level m3 - 28,600 10 286,000 - - 143,000 143,000 Demolition of unused structures nos - 2 5,000 10,000 - - 5,000 5,000 - - - - ii Donny Brook 2 - - - - a Short Term Pond Refurbishment and desludging Sum 1 75,000 75,000 - 75,000 - 37,500 37,500 - - Dewatering and drying out Sum - 1 50,000 50,000 - - 25,000 25,000 Sludge excavation and removal m3 - 13,600 50 680,000 - - 340,000 340,000 Dozing of walls and lanscaping level m3 - 45,300 10 453,000 - - 226,500 226,500 Demolition of unused structures nos - 2 5,000 10,000 - - 5,000 5,000 - - - - iii Donny Brook 3 - - - - a Short Term Pond Refurbishment and desludging Sum 1 75,000 75,000 - 75,000 - 37,500 37,500 - - Dewatering and drying out Sum - 1 50,000 50,000 - - 25,000 25,000 Sludge excavation and removal m3 - 15,000 50 750,000 - - 375,000 375,000 Dozing of walls and lanscaping level m3 - 38,000 10 380,000 - - 190,000 190,000 Demolition of unused structures nos - 2 5,000 10,000 - - 5,000 5,000 - - - - iv Donny Brook 4 - - - - a Short Term Pond Refurbishment and desludging Sum 1 75,000 75,000 - 75,000 - 37,500 37,500 - - Dewatering and drying out Sum - 1 50,000 50,000 - - 25,000 25,000 Sludge excavation and removal m3 - 6,200 50 310,000 - - 155,000 155,000 Dozing of walls and lanscaping level m3 - 22,600 10 226,000 - - 113,000 113,000 Demolition of unused structures nos - 2 5,000 10,000 - - 5,000 5,000 Donny Brook Area Irrigation System (9 MLD Capacity) Irrigation Set Up Ha 125 4,770 596,250 4,770 - 298,125 298,125 - - Irrigation Pumps and Equipment Ha 125 2,650 331,250 2,650 - 165,625 165,625 - - - - - - E.2 Rehabilitation/ Commissioning of Existing Lyndhurst Farm Sewer - 1,153,944 - - - - - - - - - - - - 384,648 384,648 384,648 - - i New / replacement Pipework - - ND 450 PVC m 300 190 57,000 - - 19,000 19,000 19,000 ND 525 Concrete m 300 - - - - - - ND 600 Concrete m 210 342 71,820 - - 23,940 23,940 23,940 ND 675 Concrete m 422 - - - - - - ND 750 Concrete m 90 509 45,810 - - 15,270 15,270 15,270 ND 825 Concrete m 536 - - - - - - ND 900 Concrete m 390 753 293,514 - - 97,838 97,838 97,838 ND 1050 Concrete m 340 825 280,500 - - 93,500 93,500 93,500 ND 1200 Concrete m 190 900 171,000 - - 57,000 57,000 57,000 ND 1350 Concrete m 968 - - - - - - ND 1500 Concrete m 1,325 - - - - - - Construction of replacement manholes nos. 15 5,300 79,500 - - 26,500 26,500 26,500 Rehabilitation of manhole cover and frame nos. 30 350 10,500 - - 3,500 3,500 3,500 New manhole covers only nos. 106 150 15,900 - - 5,300 5,300 5,300 - - - - - ii Complete Pipelaying over Pipe Bridges - - - - - ND 450 ST m - 200 246 49,200 - - 16,400 16,400 16,400 ND 525 ST m - 200 396 79,200 - - 26,400 26,400 26,400 - - E.3 Trunk Sewer Extensions in Southern Suburbs (Ward 1) - 3,520,907 - - - - - - - - - - - - 1,173,636 1,173,636 1,173,636 - - i New / replacement Pipework ND 400 PVC m - 2,300 165 379,500 - - 126,500 126,500 126,500 ND 450 PVC m - 2,550 190 484,500 - - 161,500 161,500 161,500 ND 525 Concrete m - 1,000 300 300,000 - - 100,000 100,000 100,000 ND 600 Concrete m - 342 - - - - - - ND 675 Concrete m - 422 - - - - - - ND 750 Concrete m - 860 509 437,740 - - 145,913 145,913 145,913 ND 825 Concrete m - 2,450 536 1,313,200 - - 437,733 437,733 437,733 ND 900 Concrete m - 753 - - - - - - ND 1050 Concrete m - 825 - - - - - - ND 1200 Concrete m - 900 - - - - - - ND 1350 Concrete m - 968 - - - - - - ND 1500 Concrete m - 1,325 - - - - - - Construction of New Manhole nos. - 114 5,300 605,967 - - 201,989 201,989 201,989 D:\Projects\Zimbabwe\InvestmentPlans\WorldBank_GHWSIP_Project\CostEstimates\RealCostEstimates_No Inflation\Investment Programme - HARARE_Real 140522.xlsx 15 of 16 Long Term Projects Medium Term Projects Greater Harare Water and Sanitation Investment Plan Covered under Chinese Exim Bank loan FS/FD Construction Covered under Zim-Fund Phase 1 FS/FD Construction Appendix 9-1: Detailed Investment Cost Estimates - HARARE Item Unit Medium Term (upto 2020) Long Term (upto 2030) 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Qty Rate [USD] Amount Qty Rate [USD] Amount [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] E.4 Harare South Trunk Sewer - 31,403,383 - - - - - - - - - - - - 10,467,794 10,467,794 10,467,794 - - i New Pipework ND 450 PVC m - 190 - - - - - - ND 525 Concrete m - 300 - - - - - - ND 600 Concrete m - 342 - - - - - - ND 675 Concrete m - 422 - - - - - - ND 750 Concrete m 2,570 - 509 - - - - - - ND 825 Concrete m 640 - 536 - - - - - - ND 900 Concrete m - 19,250 753 14,487,550 - - 4,829,183 4,829,183 4,829,183 ND 1050 Concrete m - 825 - - - - - - ND 1200 Concrete m - 900 - - - - - - ND 1350 Concrete m - 968 - - - - - - ND 1500 Concrete m - 9,000 1,325 11,925,000 - - 3,975,000 3,975,000 3,975,000 Construction of new manholes nos. 54 - 471 10,600 4,990,833 - - 1,663,611 1,663,611 1,663,611 E.5 Harare South Sewage Pump Station and Force Main 2,100,000 11,167,000 - - - 1,050,000 1,050,000 - - - - - - - 3,722,333 3,722,333 3,722,333 - - i Sewage Pumping Station Construction kW 250 - 1,500 482 723,450 - - 241,150 241,150 241,150 ii Sewage Pumping Equipment kW 250 - 1,500 896 1,343,550 - - 447,850 447,850 447,850 iii GRP Force Main DN500 m 7,000 300 2,100,000 - 300 - 1,050,000 1,050,000 - - - iii GRP Force Main DN1100 m - 1,300 - 7,000 1,300 9,100,000 - - 3,033,333 3,033,333 3,033,333 E.6 Harare South Wastewater Treatment Works 7,770,800 52,907,100 - - - 3,885,400 3,885,400 - - - - - - - 17,635,700 17,635,700 17,635,700 - - i Wastewater Stabiliation Pond System Construction of Wastewater Stabilisation Ponds System MLD 12 561,000 6,732,000 83 561,000 46,563,000 3,366,000 3,366,000 15,521,000 15,521,000 15,521,000 - - - - - ii Wastewater Slow Rate (irrigation) disposal system - - - - - Irrigation Set Up Ha 140 4,770 667,800 805 4,770 3,839,850 333,900 333,900 1,279,950 1,279,950 1,279,950 Irrigation Pumps and Equipment Ha 140 2,650 371,000 945 2,650 2,504,250 185,500 185,500 834,750 834,750 834,750 - - - E.7 Expansion of Crowborough WWTW 57,600,000 - - - - 28,800,000 28,800,000 - - - - - - - - - - - - Construction of additional 18 ML/day BNR modules ML/day 36 1,600,000 57,600,000 28,800,000 28,800,000 - - - E.8 Extension of sewer reticulation system in new development areas 50,460,299 174,326,288 7,208,614 7,208,614 7,208,614 7,208,614 7,208,614 7,208,614 7,208,614 17,432,629 17,432,629 17,432,629 17,432,629 17,432,629 17,432,629 17,432,629 17,432,629 17,432,629 17,432,629 i pipes ND 100 PVC m 118,063 27 3,187,712 407,876 27 11,012,657 455,387 455,387 455,387 455,387 455,387 455,387 455,387 1,101,266 1,101,266 1,101,266 1,101,266 1,101,266 1,101,266 1,101,266 1,101,266 1,101,266 1,101,266 ND 160 PVC m 283,352 36 10,200,678 978,903 36 35,240,504 1,457,240 1,457,240 1,457,240 1,457,240 1,457,240 1,457,240 1,457,240 3,524,050 3,524,050 3,524,050 3,524,050 3,524,050 3,524,050 3,524,050 3,524,050 3,524,050 3,524,050 ii Construction of manholes nos. 8,028 2,500 20,070,779 27,736 2,500 69,338,954 2,867,254 2,867,254 2,867,254 2,867,254 2,867,254 2,867,254 2,867,254 6,933,895 6,933,895 6,933,895 6,933,895 6,933,895 6,933,895 6,933,895 6,933,895 6,933,895 6,933,895 iii Sewer service connections i ND 100 nos. 47,225 360 17,001,130 163,150 360 58,734,173 2,428,733 2,428,733 2,428,733 2,428,733 2,428,733 2,428,733 2,428,733 5,873,417 5,873,417 5,873,417 5,873,417 5,873,417 5,873,417 5,873,417 5,873,417 5,873,417 5,873,417 F. ACCOMPANYING MEASURES 61,408,972 75,076,163 1,498,310 5,498,310 5,498,310 15,933,064 13,793,064 12,708,959 12,708,959 9,673,942 3,352,969 3,511,294 4,559,294 4,559,294 15,553,152 15,553,152 11,156,049 3,729,146 3,887,471 F.1 Technical operations management 1,200,000 - - - 1,200,000 - - - - - - - - - - - - - i Establishment of meter control, testing and repair workshop Sum 15 50,000 750,000 750,000 ii Procurement of tools and equipment for operations and maintenance Sum - - iii Provision of vehicles for operation and maintenance teams Sum 1 150,000 150,000 150,000 iv Provision of vacuum tanker for septic tank emptying no.s 10 30,000 300,000 300,000 F.2 Information Communication Technology Infrastructure - - - - - - - - - - - - - - - - - - ii Supply of server nos iii Supply and install Local Area Networking Sum iv Supply and install Wide Area Networking Satelite v Supply and install generator power back-up nos vi Supply personal computers complete with software, UPS, etc. nos vii Supply laptop computers nos viii Supply heavy duty printer (dot-matrix) nos ix Supply laser printers nos x Supply and if appropraiate install auxiliary equipment Sum F.3 Commercial operations management 800,000 - - - 800,000 - - - - - - - - - - - - - i Review/Improvement of billing and commercial operations (consultancy) Sum 1 500,000 500,000 500,000 ii Socio-economic surveys and customer awareness campaigns Sum 1 300,000 300,000 300,000 F.4 Management, commercial and technical information systems 140,000 - - - 140,000 - - - - - - - - - - - - - i Procurement and installation of billing and customer services software Sum 1 20,000 20,000 20,000 ii Procurement and installation of management information software Sum 1 15,000 15,000 15,000 iii Procurement of commercial operations software (various) Sum 1 50,000 50,000 50,000 iv Procurement and installation of accounting and payroll software Sum 1 15,000 15,000 15,000 iiv Procurement and installation of GIS based Network Information Systems software Sum 1 10,000 10,000 10,000 iiiv Procurement and installation of other software (asset management, hyrauli modelling etc) Sum 1 30,000 30,000 30,000 F.5 Professional services - Institutional Support 24,000,000 - - 4,000,000 4,000,000 4,000,000 4,000,000 4,000,000 4,000,000 - - - - - - - - - - i Advice, guidance and support in the development of institutional frameworks towards an autonomous utility Sum 1 18,000,000 18,000,000 - 3,000,000 3,000,000 3,000,000 3,000,000 3,000,000 3,000,000 ii Assessment of capacity, competency and development of a comprehesive training program Sum 1 4,000,000 4,000,000 666,667 666,667 666,667 666,667 666,667 666,667 iii Specific training courses (various) Sum 1 2,000,000 2,000,000 333,333 333,333 333,333 333,333 333,333 333,333 F.6 Professional services - Feasibility, Design and Supervision 35,268,972 75,076,163 1,498,310 1,498,310 1,498,310 9,793,064 9,793,064 8,708,959 8,708,959 9,673,942 3,352,969 3,511,294 4,559,294 4,559,294 15,553,152 15,553,152 11,156,049 3,729,146 3,887,471 iv Engineering Services Sum 35,268,972 75,076,163 1,498,310 1,498,310 1,498,310 9,793,064 9,793,064 8,708,959 8,708,959 9,673,942 3,352,969 3,511,294 4,559,294 4,559,294 15,553,152 15,553,152 11,156,049 3,729,146 3,887,471 Contingency 5,244,086 5,244,086 5,244,086 34,275,726 34,275,726 30,481,355 30,481,355 33,858,798 11,735,392 12,289,529 15,957,529 15,957,529 54,436,033 54,436,033 39,046,172 13,052,013 13,606,150 Engineering Services 10% of physical works (A+B+C+D+E) Total 21,725,500 25,725,500 25,725,500 148,139,435 145,999,435 130,279,899 130,279,899 140,272,163 48,618,051 50,913,764 66,109,764 66,109,764 225,520,707 225,520,707 161,762,714 54,072,623 56,368,335 Contractors' P&G and Physical contingencies 35% of physical works (A+B+C+D+E) Cum. Total 21,725,500 47,451,000 73,176,501 221,315,935 367,315,370 497,595,269 627,875,169 768,147,331 816,765,383 867,679,146 933,788,910 999,898,673 1,225,419,380 1,450,940,087 1,612,702,801 1,666,775,424 1,723,143,760 Inflation 0% D:\Projects\Zimbabwe\InvestmentPlans\WorldBank_GHWSIP_Project\CostEstimates\RealCostEstimates_No Inflation\Investment Programme - HARARE_Real 140522.xlsx 16 of 16 Medium term Projects Long term Projects Greater Harare Water and Sanitation Investment Plan FS/FD Construction FS/FD Construction Appendix 9-2: Detailed Investment Cost Estimates - CHITUNGWIZA Item Unit Medium Term (upto 2020) Long Term (upto 2030) 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Qty Rate [USD] Amount Qty Rate [USD] Amount [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] A. WATER DEMAND MANAGEMENT/NRW REDUCTION PROGRAMME 10,969,195 75,000 - - - 5,484,598 5,484,598 - - 132,815 132,815 132,815 9,092,815 132,815 170,315 170,315 552,635 552,635 552,635 A.1 Rehabilitation/replacement of water distribution network 14,175 - - - 7,088 7,088 - - - - - - - - - - - - i ND 75 PVC m 22 - - - - - ii ND 110 PVC m 30 - - - - - iii ND 160 PVC m 315 45 14,175 7,088 7,088 - - A.2 Replacement/Installation of section valves 506,420 - - - 253,210 253,210 - - - - - - - - - - - - i ND 50 Gate nos. 409 180 73,620 36,810 36,810 - - ii ND 75 Gate nos. 1,190 200 238,000 119,000 119,000 - - iii ND 100 Gate nos. 544 250 136,000 68,000 68,000 - - iv ND 150 Gate nos. 88 450 39,600 19,800 19,800 - - v ND 200 Gate nos. 4 800 3,200 1,600 1,600 - - vi ND 250 Gate nos. 2 1,500 3,000 1,500 1,500 - - vii ND 300 Butterfly nos. 1 2,000 2,000 1,000 1,000 - - viii ND 400 Butterfly nos. 1 4,000 4,000 2,000 2,000 - - ix ND 500 Butterfly nos. 1 7,000 7,000 3,500 3,500 - - A.3 Installation of bulk meters 75,000 75,000 - - - 37,500 37,500 - - - - - - - 37,500 37,500 - - - i ND 150 Woltman type nos. 4 2,000 8,000 4 2,000 8,000 4,000 4,000 4,000 4,000 ii ND 200 Woltman type nos. 3 3,000 9,000 3 3,000 9,000 4,500 4,500 4,500 4,500 iii ND 250 Woltman type nos. 2 4,000 8,000 2 4,000 8,000 4,000 4,000 4,000 4,000 iv ND 300 Woltman type nos. 3 7,000 21,000 3 7,000 21,000 10,500 10,500 10,500 10,500 v ND 400 Electromagnetic nos. 1 12,000 12,000 1 12,000 12,000 6,000 6,000 6,000 6,000 vi ND 500 Electromagnetic nos. 1 17,000 17,000 1 17,000 17,000 8,500 8,500 8,500 8,500 A.4 Rehabilitating/Installation of pressure reducing valves - - - - - - - - - - - - - - - - - - - i ND 150 nos. - - - - - ii ND 200 nos. - - - - - iii ND 250 nos. - - - - - - - A.5 Replacement of service connections 313,600 - - - 156,800 156,800 - - - - - - - - - - - - i Domestic (ND 15) (OD 20) nos. 44,800 5 224,000 112,000 112,000 - - ii Non-Domestic (ND 25) nos. 11,200 8 89,600 44,800 44,800 - - - A.6 Replacement of service water meters 8,960,000 - - - 4,480,000 4,480,000 - - 132,815 132,815 132,815 9,092,815 132,815 132,815 132,815 552,635 552,635 552,635 i Domestic (ND 15) nos. 44,800 150 6,720,000 - - - 3,360,000 3,360,000 - - 104,854 104,854 104,854 6,824,854 104,854 104,854 104,854 436,291 436,291 436,291 ii Non-Domestic (ND 25) nos. 11,200 200 2,240,000 - - - 1,120,000 1,120,000 - - 27,961 27,961 27,961 2,267,961 27,961 27,961 27,961 116,344 116,344 116,344 A.7 NRW Reduction programme 1,100,000 - - - 550,000 550,000 - - - - - - - - - - - - i Network Mapping, Network investigations and repair/replacement programme Sum 1 800,000 800,000 400,000 400,000 - - ii Customer database cleanup and awareness campaigns Sum 1 300,000 300,000 150,000 150,000 - - B. WATER SUPPLY SERVICE IMPROVEMENTS 4,245,610 50,000 - - - 2,122,805 2,122,805 - - - - - - - - - - - - B.1 Rehabilitation of Source Works - - - - - - - - - - - - - - - - - - - - - B.2 Rehabilitation of existing water treatment facilities - - - - - - - - - - - - - - - - - - - - - - B.3 Rehabilitation of Pump Stations (Booster Pump Station @ Reservoirs) 50,000 50,000 - - - 25,000 25,000 - - - - - - - - - - - - Sum 1 50,000 50,000 1 50,000 50,000 25,000 25,000 - - B.4 Replacement/rehabilitation of existing transmission and primary distribution mains 4,125,610 - - - - 2,062,805 2,062,805 - - - - - - - - - - - - i Pipes ND 200 PVC (OD 225) m 75 - - - - - ND 250 PVC (OD 280) m 90 - - - - - ND 315 PVC m 1,236 120 148,320 74,160 74,160 - - ND 350 DI m 150 - - - - - ND 400 DI m 2,978 200 595,600 297,800 297,800 - - ND 450 DI m 1,695 250 423,750 211,875 211,875 - - ND 500 DI m 2,995 300 898,500 449,250 449,250 - - ND 600 DI m 925 450 416,250 208,125 208,125 - - ND 700 DI m 2,553 640 1,633,920 816,960 816,960 - - - - i Valves - - ND 200 Gate nos. 800 - - - - - ND 250 Gate nos. 6.18 1,500 9,270 4,635 4,635 - - ND 300 Butterfly nos. 2,000 - - - - - ND 400 Butterfly nos. 4,000 - - - - - ND 500 Butterfly nos. 7,000 - - - - - B.5 Rehabilitation of storage tanks 70,000 - - - 35,000 35,000 - - - - - - - - - - - - i Chitungwiza Reservoirs Sum 1 70,000 70,000 35,000 35,000 - - - C. EXTENSION OF WATER SUPPLY SERVICES 8,893,052 17,015,215 348,477 348,477 348,477 7,975,333 7,975,333 348,477 348,477 1,101,521 1,101,521 1,101,521 1,101,521 1,101,521 4,101,521 4,101,521 1,101,521 1,101,521 1,101,521 C.1 Extension of water abstraction and treatment facilities - - - - - - - - - - - - - - - - - - - - - - - - - C.2 Construction of new Pump Stations - - - - - - - - - - - - - - - - - - - - - C.3 Installtion of new transmission and primary mains 6,348,711 - - - - 3,174,356 3,174,356 - - - - - - - - - - - - i Pipes ND 200 PVC (OD 225) m 7,157 75 536,775 268,388 268,388 - - ND 250 PVC (OD 280) m 4,742 90 426,780 213,390 213,390 - - ND 315 PVC m 11,380 120 1,365,600 682,800 682,800 - - ND 350 DI m 150 - - - - - ND 400 DI m 200 - - - - - ND 450 DI m 12,633 250 3,158,250 1,579,125 1,579,125 - - ND 500 DI m 300 - - - - - ND 600 DI m 450 - - - - - - - i Section Valves - - ND 200 Gate nos. 71.57 800 57,256 28,628 28,628 - - D:\Projects\Zimbabwe\InvestmentPlans\WorldBank_GHWSIP_Project\CostEstimates\RealCostEstimates_No Inflation\Investment Programme - CHITUNGWIZA_GreaterHarare_Real140522.xlsx 1 of 4 Medium term Projects Long term Projects Greater Harare Water and Sanitation Investment Plan FS/FD Construction FS/FD Construction Appendix 9-2: Detailed Investment Cost Estimates - CHITUNGWIZA Item Unit Medium Term (upto 2020) Long Term (upto 2030) 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Qty Rate [USD] Amount Qty Rate [USD] Amount [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] ND 250 Gate nos. 47.42 1,500 71,130 35,565 35,565 - - ND 300 Butterfly nos. 113.80 2,000 227,600 113,800 113,800 - - ND 400 Butterfly nos. 126.33 4,000 505,320 252,660 252,660 - - ND 500 Butterfly nos. 7,000 - - - - - C.4 Construction of new storage tanks 6,000,000 - - - 4,400,000 4,400,000 - - - - - - - 3,000,000 3,000,000 - - - New 15,000 m3 storage tank (6 Farms) 3 400 - 15,000 400 6,000,000 - - 3,000,000 3,000,000 m New 22,000 m3 storage tank (Makoni Storage Area additional Storage) m3 22,000 400 8,800,000 400 - 4,400,000 4,400,000 - - - - - C.5 Extension of distribution system in expansion areas 1,477,345 6,671,174 211,049 211,049 211,049 211,049 211,049 211,049 211,049 667,117 667,117 667,117 667,117 667,117 667,117 667,117 667,117 667,117 667,117 i Pipes ND 75 PVC m 29,359 22 645,898 132,575 22 2,916,650 92,271 92,271 92,271 92,271 92,271 92,271 92,271 291,665 291,665 291,665 291,665 291,665 291,665 291,665 291,665 291,665 291,665 ND 110 PVC m 23,487 30 704,616 106,060 30 3,181,800 100,659 100,659 100,659 100,659 100,659 100,659 100,659 318,180 318,180 318,180 318,180 318,180 318,180 318,180 318,180 318,180 318,180 ND 160 PVC m 45 - 45 - - - - - - - - - - - - - - - - - - ii Section valves ND 75 Gate nos. 294 200 58,718 1,326 200 265,150 8,388 8,388 8,388 8,388 8,388 8,388 8,388 26,515 26,515 26,515 26,515 26,515 26,515 26,515 26,515 26,515 26,515 ND 100 Gate nos. 235 250 58,718 1,061 250 265,150 8,388 8,388 8,388 8,388 8,388 8,388 8,388 26,515 26,515 26,515 26,515 26,515 26,515 26,515 26,515 26,515 26,515 ND 150 Gate nos. - 450 - - 450 - - - - - - - - - - - - - - - - - - iii Installation of fire hydrants in expansion areas ND 80 nos. 47 200 9,395 212 200 42,424 1,342 1,342 1,342 1,342 1,342 1,342 1,342 4,242 4,242 4,242 4,242 4,242 4,242 4,242 4,242 4,242 4,242 C.6 Installation of service connections in expansion areas 32,295 145,833 4,614 4,614 4,614 4,614 4,614 4,614 4,614 14,583 14,583 14,583 14,583 14,583 14,583 14,583 14,583 14,583 14,583 i ND 15 nos. 4,893 5 24,466 22,096 5 110,479 3,495 3,495 3,495 3,495 3,495 3,495 3,495 11,048 11,048 11,048 11,048 11,048 11,048 11,048 11,048 11,048 11,048 ii ND 25 nos. 979 8 7,829 4,419 8 35,353 1,118 1,118 1,118 1,118 1,118 1,118 1,118 3,535 3,535 3,535 3,535 3,535 3,535 3,535 3,535 3,535 3,535 C.7 Installation of service water meters in expansion areas 929,702 4,198,208 132,815 132,815 132,815 132,815 132,815 132,815 132,815 419,821 419,821 419,821 419,821 419,821 419,821 419,821 419,821 419,821 419,821 i Domestic (ND 15) nos. 4,893 150 733,975 22,096 150 3,314,375 104,854 104,854 104,854 104,854 104,854 104,854 104,854 331,438 331,438 331,438 331,438 331,438 331,438 331,438 331,438 331,438 331,438 ii Non-Domestic (ND 25) nos. 979 200 195,727 4,419 200 883,833 27,961 27,961 27,961 27,961 27,961 27,961 27,961 88,383 88,383 88,383 88,383 88,383 88,383 88,383 88,383 88,383 88,383 C.8 Other new bulk water management facilities 105,000 - - - - 52,500 52,500 - - - - - - - - - - - - i Automatic Control System for pumps and reservoirs Station 3 25,000 75,000 37,500 37,500 ii Water quality monitoring equipment Sum 1 30,000 30,000 15,000 15,000 D. SEWERAGE SERVICE IMPROVEMENTS 7,226,727 - - - 3,613,363 3,613,363 - - - - - - - 2,696,250 2,696,250 - - - D.1 Rehabilitation of wastewater treatment facilities 6,906,555 5,392,500 - - - 3,453,277 3,453,277 - - - - - - - 2,696,250 2,696,250 - - - D.1.1 Rehabilitation of Zengeza WWTW- Modified Conventional Works 2,055,500 870,000 1,027,750 1,027,750 435,000 435,000 - i Refurbishment of Inlet Structure - - - Replacement of coarse screens nos. 2 4,000 8,000 4,000 4,000 - - Replacement of the drainage trough nos. 1 2,500 2,500 1,250 1,250 - - Replacement of the partial flume nos. 1 10,000 10,000 5,000 5,000 - - Replacement of the flow measurement system nos. 1 10,000 10,000 10,000 - 5,000 5,000 - - Refurbishment of grit removal system Sum 2 50,000 100,000 50,000 50,000 - - Rehabilitation of pitted concrete walls and damaged sections Sum 1 5,000 5,000 2,500 2,500 - - Refurbishment of the above ground shed structure Sum 1 2,500 2,500 1,250 1,250 - - - - - - ii Refurbishment of Anaerobic Ponds - - - - Removal and disposal of all vegetation Sum 1 50,000 50,000 25,000 25,000 - - Dealing with existing flows nos. 1 75,000 75,000 37,500 37,500 - - Removal of sludge (Wet) Sum 1 350,000 350,000 175,000 175,000 - - Restoration of conveyance works i.e pipes and steel fittings Sum 1 10,000 10,000 5,000 5,000 - - - - - - iii Refurbishment of Flow Distribution Chamber - - - - Rehabilitation of pitted concrete walls and damaged sections Sum 1 5,000 5,000 2,500 2,500 - - Rehabilitation of distribution weirs Sum 1 2,500 2,500 1,250 1,250 - - - - - - iv Refurbishment of Biological Filters - - - - Replacement of filter media Sum 1 75,000 75,000 37,500 37,500 - - Replacement of filter arms and central columns nos. 5 60,000 300,000 150,000 150,000 - - Refurbishment of the underdrainage and airflow system Sum 1 30,000 30,000 15,000 15,000 - - - - - - v Refurbishment of Humus Tanks/Secondary Sedimentation Tanks - - - - Replacement of weirs Sum 1 5,000 5,000 2,500 2,500 - - Replacement of steel pipes attached to concrete bridges Sum 1 20,000 20,000 10,000 10,000 - - Replacement of inlet and outlet pipes and fittings Sum 1 75,000 75,000 37,500 37,500 - - Rehabilitation of pitted concrete walls and damaged sections Sum 1 25,000 25,000 12,500 12,500 - - - - - - vi Refurbishment of the effluent recirculation pump station - - - - Replacement of pumps nos. 2 25,000 50,000 2 25,000 50,000 25,000 25,000 25,000 25,000 Replacement of control gear nos. 2 50,000 100,000 2 50,000 100,000 50,000 50,000 50,000 50,000 Rehabilitation of pitted concrete walls and damaged sections Sum 1 5,000 5,000 2,500 2,500 - - - - - - vii Refurbishment of the effluent pump stations - - - - Replacement of pumps nos. 6 45,000 270,000 6 45,000 270,000 135,000 135,000 135,000 135,000 Replacement of control gear nos. 6 75,000 450,000 6 75,000 450,000 225,000 225,000 225,000 225,000 Rehabilitation of pitted concrete walls and damaged sections Sum 1 20,000 20,000 10,000 10,000 - - - - D.1.2 Rehabilitation of Zengeza WWTW- BNR System 4,851,055 4,522,500 2,425,527 2,425,527 2,261,250 2,261,250 - i Refurbishment of Inlet Structure - - Replacement of screens nos. 4 4,000 16,000 - 8,000 8,000 - - Replacement of hand penstock gates nos. 2 2,500 5,000 - 2,500 2,500 - - Replacement of intake control valve nos. 1 5,000 5,000 - 2,500 2,500 - - Replacement of the flow measurement system nos. 1 10,000 10,000 1 10,000 10,000 5,000 5,000 5,000 5,000 Refurbishment of grit removal system Sum 1 50,000 50,000 1 50,000 50,000 25,000 25,000 25,000 25,000 Replacement of water tower supply pumps Sum 1 20,000 20,000 1 20,000 20,000 10,000 10,000 10,000 10,000 Refurbishment of the above ground shed structure Sum 1 2,500 2,500 - 1,250 1,250 - - Replace baffles in the grit tanks Sum 1 2,500 2,500 1,250 1,250 - - Replace weir overflow gates Sum 1 2,500 2,500 1,250 1,250 - - Replace compressor No. 1 20,000 20,000 1 20,000 20,000 10,000 10,000 10,000 10,000 Replace air receiver Sum 1 10,000 10,000 5,000 5,000 - - Empty and clean grit chambers Sum 1 25,000 25,000 12,500 12,500 - - - - - - ii Refurbishment of Primary Sedimentation Tanks - - - - D:\Projects\Zimbabwe\InvestmentPlans\WorldBank_GHWSIP_Project\CostEstimates\RealCostEstimates_No Inflation\Investment Programme - CHITUNGWIZA_GreaterHarare_Real140522.xlsx 2 of 4 Medium term Projects Long term Projects Greater Harare Water and Sanitation Investment Plan FS/FD Construction FS/FD Construction Appendix 9-2: Detailed Investment Cost Estimates - CHITUNGWIZA Item Unit Medium Term (upto 2020) Long Term (upto 2030) 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Qty Rate [USD] Amount Qty Rate [USD] Amount [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] a Replacement of weirs Sum 2 5,000 10,000 - 5,000 5,000 - - b Rehabilitate sludge collectors nos. 2 15,000 30,000 - 15,000 15,000 - - c Replacement of inlet and outlet pipes and fittings Sum 2 45,000 90,000 - 45,000 45,000 - - d Rehabilitation of pitted concrete walls and damaged sections Sum 2 15,000 30,000 - 15,000 15,000 - - e Replace sludge pump No. 1 20,000 20,000 1 20,000 20,000 10,000 10,000 10,000 10,000 - - - - iii Equalisation/Balancing Basin - - - - a Replace/rehabilitate mixers No. 4 15,000 60,000 4 15,000 60,000 30,000 30,000 30,000 30,000 b Replace flow meters No. 3 7,500 22,500 3 7,500 22,500 11,250 11,250 11,250 11,250 - - - - iv Biological Nutrient Removal Plant Unit - - - - a Replacement of mixers, motors and gear box nos. 12 30,000 360,000 12 30,000 360,000 180,000 180,000 180,000 180,000 b Replacement of aerators, motors and gear box nos. 10 115,000 1,150,000 10 115,000 1,150,000 575,000 575,000 575,000 575,000 c Replacement of all hand-railing and related steel work Sum 1 10,000 10,000 - 5,000 5,000 - - - - - - v Rehabilitation of Secondary Sedimentation Tanks - - - - a Replacement of weirs Sum 1 5,000 5,000 2,500 2,500 - - b Replacement of steel bridges nos. 2 50,000 100,000 50,000 50,000 - - c Replacement of inlet and outlet pipes and fittings Sum 1 45,000 45,000 22,500 22,500 - - d Rehabilitation of pitted concrete walls and damaged sections Sum 1 15,000 15,000 7,500 7,500 - - e Replacement of all hand-railing and related steel work Sum 1 5,000 5,000 2,500 2,500 - - f Repair sludge collector bridge drives Sum 1 50,000 50,000 1 50,000 50,000 25,000 25,000 25,000 25,000 - - - - vi Rehabilitation of Return Activated Sludge Pump Station - - - - a Replacement of pumps nos. 6 45,000 270,000 6 45,000 270,000 135,000 135,000 135,000 135,000 b Replacement of control gear nos. 6 75,000 450,000 6 75,000 450,000 225,000 225,000 225,000 225,000 c Rehabilitation of pitted concrete walls and damaged sections Sum 1 10,000 10,000 5,000 5,000 - - - - - - vii Rehabilitation of Waste Activated Sludge Pump Station - - - - a Replacement of pumps nos. 4 45,000 180,000 4 45,000 180,000 90,000 90,000 90,000 90,000 b Replacement of control gear nos. 4 75,000 300,000 4 75,000 300,000 150,000 150,000 150,000 150,000 c Rehabilitation of pitted concrete walls and damaged sections Sum 1 10,000 10,000 5,000 5,000 - - - - - - viii Rehabilitation of Infiltration Pit - - - - a Replacement of pumps nos. 1 45,000 45,000 1 45,000 45,000 22,500 22,500 22,500 22,500 b Replacement of control gear nos. 1 75,000 75,000 1 75,000 75,000 37,500 37,500 37,500 37,500 c Rehabilitation of pitted concrete walls and damaged sections Sum 1 10,000 10,000 5,000 5,000 - - - - - - ix Rehabilitation of Mixed Liquor Recycle Pump Station - - - - a Replacement of pumps nos. 6 25,000 150,000 6 25,000 150,000 75,000 75,000 75,000 75,000 b Replacement of control gear nos. 6 75,000 450,000 6 75,000 450,000 225,000 225,000 225,000 225,000 b Replacement of compressors nos. 2 25,000 50,000 2 25,000 50,000 25,000 25,000 25,000 25,000 c Replacement of control gear nos. 2 50,000 100,000 2 50,000 100,000 50,000 50,000 50,000 50,000 d Rehabilitation of pitted concrete walls and damaged sections Sum 1 10,000 10,000 5,000 5,000 - - - - - - x Refurbishment of Sludge Digesters - - - - a Replacement of choked pipes Sum 1 20,000 20,000 10,000 10,000 - - b Replacement of thickener drives No. 2 20,000 40,000 2 20,000 40,000 20,000 20,000 20,000 20,000 c Replacement of thickener pumps No. 6 25,000 150,000 6 25,000 150,000 75,000 75,000 75,000 75,000 d Replacement of mixing pumps No. 3 25,000 75,000 3 25,000 75,000 37,500 37,500 37,500 37,500 e Repalcement of bilge pumps No. 2 25,000 50,000 2 25,000 50,000 25,000 25,000 25,000 25,000 f Replacement of withdrawal pumps No. 3 25,000 75,000 3 25,000 75,000 37,500 37,500 37,500 37,500 a Replacement of sludge storage shed roof Sum 1 10,000 10,000 - 5,000 5,000 - - b Replacement of pumps and motors Sum 1 75,000 75,000 1 75,000 75,000 37,500 37,500 37,500 37,500 - - - - xi Refurbishment of control building - - - - a Replacement of electrical switchboard Sum 1 55 55 1 150,000 150,000 27 27 75,000 75,000 b Replacement of mimic panel Sum 1 75,000 75,000 1 75,000 75,000 37,500 37,500 37,500 37,500 c Service the main switchboard Sum - - - - - - - D.2 Rehabilitation of sewage pump stations 150,000 150,000 - - - 75,000 75,000 - - - - - - - - - - - - Tilcor Sewage Pump Station Sum 1 150,000 150,000 1 150,000 150,000 75,000 75,000 - - D.3 Rehabilitation/replacement of existing sewer network 170,172 - - - - 85,086 85,086 - - - - - - - - - - - - i Pipes - - ND 200 PVC m 44 - - - - - ND 250 PVC m 1,188 57 67,716 33,858 33,858 - - ND 315 PVC m 954 80 76,320 38,160 38,160 - - ii Manholes - - rehabilitation of manholes nos. 24 1,000 23,760 11,880 11,880 - - replacement of missing manhole covers nos. 24 100 2,376 1,188 1,188 - - - - E. EXTENSION OF SEWERAGE SERVICES 8,138,656 27,975,467 885,023 885,023 885,023 1,856,770 1,856,770 885,023 885,023 2,797,547 2,797,547 2,797,547 2,797,547 2,797,547 2,797,547 2,797,547 2,797,547 2,797,547 2,797,547 E.1 Extension of sewage treatment facilities - - - - - - - - - - - - - - - - - - none E.2 Extension of sewage pumping stations - - - - - - - - - - - - - - - - - - none - - E.3 Construction of new sewer trunk mains 1,943,493 - - - 971,747 971,747 - - - - - - - - - - - - i pipes ND 200 PVC (OD 225) m 8,246 44 362,824 181,412 181,412 - - ND 250 PVC (OD 280) m 6,139 57 349,923 174,962 174,962 - - ND 315 PVC m 3,169 80 253,520 126,760 126,760 - - ND 400 PVC m 4,040 111 448,440 224,220 224,220 - - ND 450 PVC m 616 146 89,936 44,968 44,968 - - - - ii Construction of manholes nos. 176 2,500 438,850 219,425 219,425 - - E.4 Extension of sewer reticulation system in new development areas 4,107,883 18,549,947 586,840 586,840 586,840 586,840 586,840 586,840 586,840 1,854,995 1,854,995 1,854,995 1,854,995 1,854,995 1,854,995 1,854,995 1,854,995 1,854,995 1,854,995 i pipes ND 100 PVC m 14,495 27 391,365 65,455 27 1,767,285 55,909 55,909 55,909 55,909 55,909 55,909 55,909 176,729 176,729 176,729 176,729 176,729 176,729 176,729 176,729 176,729 176,729 D:\Projects\Zimbabwe\InvestmentPlans\WorldBank_GHWSIP_Project\CostEstimates\RealCostEstimates_No Inflation\Investment Programme - CHITUNGWIZA_GreaterHarare_Real140522.xlsx 3 of 4 Medium term Projects Long term Projects Greater Harare Water and Sanitation Investment Plan FS/FD Construction FS/FD Construction Appendix 9-2: Detailed Investment Cost Estimates - CHITUNGWIZA Item Unit Medium Term (upto 2020) Long Term (upto 2030) 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Qty Rate [USD] Amount Qty Rate [USD] Amount [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] ND 160 PVC m 34,788 36 1,252,368 157,092 36 5,655,312 178,910 178,910 178,910 178,910 178,910 178,910 178,910 565,531 565,531 565,531 565,531 565,531 565,531 565,531 565,531 565,531 565,531 ii Construction of manholes nos. 986 2,500 2,464,150 4,451 2,500 11,127,350 352,021 352,021 352,021 352,021 352,021 352,021 352,021 1,112,735 1,112,735 1,112,735 1,112,735 1,112,735 1,112,735 1,112,735 1,112,735 1,112,735 1,112,735 E.5 Installation of sewer service connections in new development areas 2,087,280 9,425,520 298,183 298,183 298,183 298,183 298,183 298,183 298,183 942,552 942,552 942,552 942,552 942,552 942,552 942,552 942,552 942,552 942,552 i ND 100 nos. 5,798 360 2,087,280 26,182 360 9,425,520 298,183 298,183 298,183 298,183 298,183 298,183 298,183 942,552 942,552 942,552 942,552 942,552 942,552 942,552 942,552 942,552 942,552 F. ACCOMPANYING MEASURES 6,337,124 4,511,568 123,350 1,650,150 123,350 2,968,287 2,105,287 123,350 123,350 403,188 403,188 403,188 1,299,188 403,188 976,563 976,563 445,170 445,170 445,170 F.1 Technical operations management 430,000 - - - 430,000 - - - - - - - - - - - - - i Establishment of meter control, testing and repair workshop Sum 1 50,000 50,000 50,000 - - ii Procurement of tools and equipment for operations and maintenance Sum 1 200,000 200,000 200,000 - - iii Provision of vehicles for operation and maintenance teams Sum 1 150,000 150,000 150,000 - - iv Provision of vacuum tanker for septic tank emptying no.s 1 30,000 30,000 30,000 - - F.2 Information Communication Technology Infrastructure 258,800 - 258,800 - - - - - - - - - - - - - - - ii Supply of server nos 1 5,500 5,500 5,500 - - iii Supply and install Local Area Networking Sum 4 5,000 20,000 20,000 - - iv Supply and install Wide Area Networking Satel 4 5,000 20,000 20,000 - - v Supply and install generator power back-up nos 5 3,000 15,000 15,000 - - vi Supply personal computers complete with software, UPS, etc. nos 35 2,000 70,000 70,000 - - vii Supply laptop computers nos 4 2,500 10,000 10,000 - - viii Supply heavy duty printer (dot-matrix) nos 3 4,500 13,500 13,500 - - ix Supply laser printers nos 12 400 4,800 4,800 - - x Supply and if appropraiate install auxiliary equipment Sum 1 100,000 100,000 100,000 - - F.3 Commercial operations management 350,000 - - - 350,000 - - - - - - - - - - - - - i Review/Improvement of billing and commercial operations (consultancy) Sum 1 200,000 200,000 200,000 - - ii Socio-economic surveys and customer awareness campaigns Sum 1 150,000 150,000 150,000 - - F.4 Management, commercial and technical information systems 83,000 - - - 83,000 - - - - - - - - - - - - - i Procurement and installation of billing and customer services software Sum 1 20,000 20,000 20,000 - - ii Procurement and installation of management information software Sum 1 15,000 15,000 15,000 - - iii Procurement of commercial operations software (various) Sum 1 10,000 10,000 10,000 - - iv Procurement and installation of accounting and payroll software Sum 1 8,000 8,000 8,000 - - iiv Procurement and installation of GIS based Network Information Systems software Sum 1 10,000 10,000 10,000 - - iiiv Procurement and installation of other software (asset management, hyrauli modelling etc) Sum 1 20,000 20,000 20,000 - - F.5 Professional services - Institutional Support 1,268,000 - - 1,268,000 - - - - - - - - - - - - - - - i Advice, guidance and support in the development of institutional frameworks towards an autonomous utility Mont 42 20,000 840,000 - 840,000 - - ii Assessment of capacity, competency and development of a comprehesive training program Mont 18 20,000 360,000 360,000 - - iii Specific training courses (various) nos 136 500 68,000 68,000 - - F.6 Professional services - Feasibility, Design and Supervision 3,947,324 4,511,568 123,350 123,350 123,350 2,105,287 2,105,287 123,350 123,350 403,188 403,188 403,188 1,299,188 403,188 976,563 976,563 445,170 445,170 445,170 iv Engineering Services Sum 3,947,324 4,511,568 123,350 123,350 123,350 2,105,287 2,105,287 123,350 123,350 403,188 403,188 403,188 1,299,188 403,188 976,563 976,563 445,170 445,170 445,170 Contractor's P&G and Physical contingencies 431,725 431,725 431,725 7,368,504 7,368,504 431,725 431,725 1,411,159 1,411,159 1,411,159 4,547,159 1,411,159 3,417,971 3,417,971 1,558,096 1,558,096 1,558,096 Total 1,788,576 3,315,376 1,788,576 31,389,659 30,526,659 1,788,576 1,788,576 5,846,230 5,846,230 5,846,230 18,838,230 5,846,230 14,160,167 14,160,167 6,454,970 6,454,970 6,454,970 Cum. Total 1,788,576 5,103,952 6,892,528 38,282,187 68,808,846 70,597,422 72,385,998 78,232,228 84,078,458 89,924,688 108,762,918 114,609,148 128,769,315 142,929,483 149,384,453 155,839,423 162,294,393 Engineering Services 10% of physical works (A+B+C+D+E) Contractor's P&G and Physical contingencies 35% of physical works (A+B+C+D+E) Inflation 0% D:\Projects\Zimbabwe\InvestmentPlans\WorldBank_GHWSIP_Project\CostEstimates\RealCostEstimates_No Inflation\Investment Programme - CHITUNGWIZA_GreaterHarare_Real140522.xlsx 4 of 4 Long Term Projects Medium Term Projects Greater Harare Water and Sanitation Investment Plan FS/FD Construction FS/FD Construction Appendix 9-3: Detailed Investment Cost Estimates - EPWORTH Item Unit Medium Term (upto 2020) Long Term (upto 2030) 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Qty Rate [USD] Amount Qty Rate [USD] Amount [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] A. WATER DEMAND MANAGEMENT/NRW REDUCTION PROGRAMME 6,133,200 4,094,441 - - - 3,066,600 3,066,600 - - 43,429 43,429 43,429 2,593,429 43,429 283,679 283,679 253,314 253,314 253,314 A.1 Rehabilitation/replacement of water transmission & distribution network 930,000 - - - - 465,000 465,000 - - - - - - - - - - - - i ND 110 PVC or less m 11,100 30 333,000 166,500 166,500 - - ii ND 160 PVC m 2,800 45 126,000 63,000 63,000 - - ii ND 200 PVC m 2,000 75 150,000 75,000 75,000 - - iv ND 250 PVC m 300 90 27,000 13,500 13,500 - - v ND 315 PVC m 200 120 24,000 12,000 12,000 - - vi ND 350 DI m 200 150 30,000 15,000 15,000 - - vii ND 400 DI m 800 200 160,000 80,000 80,000 - - viii ND 450 DI m 200 250 50,000 25,000 25,000 - - ix ND 500 DI m 100 300 30,000 15,000 15,000 - - x ND 600 DI m - 450 - - - - - xi ND 750 DI m - 640 - - - - - A.2 Replacement/Installation of zone valves 98,700 - - - - 49,350 49,350 - - - - - - - - - - - - i ND 75 Gate nos. 86 200 17,200 8,600 8,600 - - ii ND 100 Gate nos. 36 250 9,000 4,500 4,500 - - iii ND 150 Gate nos. 18 450 8,100 4,050 4,050 - - iv ND 200 Gate nos. 6 800 4,800 2,400 2,400 - - v ND 250 Gate nos. 3 1,500 4,500 2,250 2,250 - - vi ND 300 Gate nos. 2 2,000 4,000 2,000 2,000 - - vii ND 350 Butterfly nos. 2 3,100 6,200 3,100 3,100 - - viii ND 400 Butterfly nos. 8 4,000 32,000 16,000 16,000 - - ix ND 450 Butterfly nos. 1 5,900 5,900 2,950 2,950 - - x ND 500 Butterfly nos. 1 7,000 7,000 3,500 3,500 - - xi ND 600 Butterfly nos. 9,200 - - - - - xii ND 750 Butterfly nos. 11,000 - - - - - xiii ND 800 Butterfly nos. 13,300 - - - - - xiv ND 1000 Butterfly nos. 15,900 - - - - - A.3 Installation of bulk meters 141,500 141,500 - - - 70,750 70,750 - - - - - - - 70,750 70,750 - - - i ND 100 Woltman type nos. 35 1,300 45,500 35 1,300 45,500 22,750 22,750 22,750 22,750 ii ND 150 Woltman type nos. 20 2,000 40,000 20 2,000 40,000 20,000 20,000 20,000 20,000 iii ND 200 Woltman type nos. 4 3,000 12,000 4 3,000 12,000 6,000 6,000 6,000 6,000 iv ND 250 Woltman type nos. 2 4,000 8,000 2 4,000 8,000 4,000 4,000 4,000 4,000 v ND 300 Woltman type nos. 1 7,000 7,000 1 7,000 7,000 3,500 3,500 3,500 3,500 vi ND 400 Electromagnetic nos. 1 12,000 12,000 1 12,000 12,000 6,000 6,000 6,000 6,000 vii ND 500 Electromagnetic nos. 1 17,000 17,000 1 17,000 17,000 8,500 8,500 8,500 8,500 viii ND 600 Electromagnetic nos. 20,000 - 20,000 - - - - - ix ND 700 Electromagnetic nos. 22,000 - 22,000 - - - - - x ND 800 Electromagnetic nos. 26,000 - 26,000 - - - - - xi ND 900 Electromagnetic nos. 31,000 - 31,000 - - - - - xii ND 1000 Electromagnetic nos. 35,000 - 35,000 - - - - - - A.4 Installation/Replacement of pressure reducing valves 14,000 14,000 - - - 7,000 7,000 - - - - - - - 7,000 7,000 - - - i ND 50 nos. - 1,600 - 1,600 - - - - - ii ND 80 nos. - 1,800 - 1,800 - - - - - iii ND 100 nos. - 2,300 - 2,300 - - - - - iv ND 150 nos. - 3,600 - 3,600 - - - - - v ND 200 nos. - 6,200 - 6,200 - - - - - vi ND 250 nos. - 8,800 - 8,800 - - - - - vii ND 300 nos. 1 14,000 14,000 1 14,000 14,000 7,000 7,000 7,000 7,000 A.5 Replacement of service connections 2,309,000 325,000 - - - 1,154,500 1,154,500 - - - - - - - 162,500 162,500 - - - i Domestic (ND 15) (OD 20) nos. 11,300 150 1,695,000 150 - 847,500 847,500 - - ii Non-Domestic (ND 25) nos. 2,300 250 575,000 250 - 287,500 287,500 - - iii Installation of flow limiter (done with service connection replacement) nos. 13,000 3 39,000 250 - 19,500 19,500 - - iv Removal of flow Limiters nos. 25 - 13,000 25 325,000 - - 162,500 162,500 - A.6 Replacement of service water meters 2,550,000 3,613,941 - - - 1,275,000 1,275,000 - - 43,429 43,429 43,429 2,593,429 43,429 43,429 43,429 253,314 253,314 253,314 i Domestic (ND 15) nos. 13,000 150 1,950,000 18,600 150 2,789,972 - - - 975,000 975,000 - - 34,286 34,286 34,286 1,984,286 34,286 34,286 34,286 199,991 199,991 199,991 ii Non-Domestic (ND 25) nos. 3,000 200 600,000 4,120 200 823,969 - - - 300,000 300,000 - - 9,143 9,143 9,143 609,143 9,143 9,143 9,143 53,323 53,323 53,323 - A.7 NRW Reduction programme 90,000 - - - - 45,000 45,000 - - - - - - - - - - - - i Network Mapping, Network investigations and repair/replacement programme Sum 1 15,000 15,000 7,500 7,500 - - ii Customer database cleanup and awareness campaigns Sum 1 75,000 75,000 37,500 37,500 - - B. WATER SUPPLY SERVICE IMPROVEMENTS 1,583,300 - - - - 791,650 791,650 - - - - - - - - - - - - B.1 Water Kiosk Programme 1,583,300 - - - - 791,650 791,650 - - - - - - - - - - - - - - i Construction of Water Kiosks Including Valves etc. Sum 21 28,800 604,800 50 - 302,400 302,400 - - ii Pipework Connections to Kiosks - - - - a DN50 HDPE Pipework m 21,000 26 546,000 25,500 - 273,000 273,000 - - b DN160 PVC Mains into Areas to be Kios Supplied m 9,500 45 427,500 25,500 - 213,750 213,750 - - iii Metering of Kiosks a Non-Domestic (ND 25) nos. 20 250 5,000 250 - 2,500 2,500 - - - - - - C. EXTENSION OF WATER SUPPLY SERVICES 1,298,688 12,148,900 185,527 185,527 185,527 185,527 185,527 185,527 185,527 945,610 945,610 945,610 945,610 945,610 2,292,010 2,292,010 1,000,610 945,610 945,610 C.1 Primary and Secondary Distribution System Expansion - 2,637,800 - - - - - - - - - - - - 1,318,900 1,318,900 - - - - - - - i Ventersberg - Epworth Booster Pump Station - - - - a Water booster pump sets Transfer to Mutare Road 580m3/hr @70m No. 78,000 - 6 78,000 468,000 - - 234,000 234,000 c Booster Pump Suction and Discharge Ppipework No. 6,000 - 12 6,000 72,000 - - 36,000 36,000 g Booster Pump Station Building m2 1,200 - 160 1,200 192,000 - - 96,000 96,000 h Booster Pump Station Ancilliaries Sum 10,000 - 1 10,000 10,000 - - 5,000 5,000 - - - - ii Secondary Network - (a) Supply Line from Ventersberg - - - - - a ND 500 DI m 300 - 975 300 292,500 - - 146,250 146,250 b ND 500 Butterfly nos. 7,000 - 2 7,000 14,000 - - 7,000 7,000 c ND 500 Electromagnetic nos. 17,000 - 1 17,000 17,000 - - 8,500 8,500 iii Secondary Network - (b) Line From Tee to Ward 7 to Tee to Ward 2 - - - - a ND 400 DI m 200 - 2,500 200 500,000 - - 250,000 250,000 D:\Projects\Zimbabwe\InvestmentPlans\WorldBank_GHWSIP_Project\CostEstimates\RealCostEstimates_No Inflation\Investment Programme - EPWORTH_Real140522.xlsx 1 of 3 Long Term Projects Medium Term Projects Greater Harare Water and Sanitation Investment Plan FS/FD Construction FS/FD Construction Appendix 9-3: Detailed Investment Cost Estimates - EPWORTH Item Unit Medium Term (upto 2020) Long Term (upto 2030) 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Qty Rate [USD] Amount Qty Rate [USD] Amount [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] b ND 400 Butterfly nos. 4,000 - 2 4,000 8,000 - - 4,000 4,000 c ND 400 Electromagnetic nos. 12,000 - 1 12,000 12,000 - - 6,000 6,000 iv Secondary Network - (c) Line Through Ward 2 to Ward 5 - - - - a ND 200 PVC m 75 - 2,500 75 187,500 - - 93,750 93,750 b ND 200 Gate nos. 800 - 2 800 1,600 - - 800 800 c ND 200 Woltman type nos. 3,000 - 1 3,000 3,000 - - 1,500 1,500 iv Secondary Network - (d) From Tee South Ward 1 to Tee to Ward 3 and 4 - - - - a ND 350 DI m 150 - 2,200 150 330,000 - - 165,000 165,000 b ND 350 Butterfly nos. 3,100 - 2 3,100 6,200 - - 3,100 3,100 c ND 300 Woltman type nos. 7,000 - 1 7,000 7,000 - - 3,500 3,500 v Secondary Network - (e) Supply Line South into Ward 4 - - - - a ND 315 PVC m 120 - 4,200 120 504,000 - - 252,000 252,000 b ND 300 Gate nos. 2,000 - 3 2,000 6,000 - - 3,000 3,000 c ND 300 Woltman type nos. 7,000 - 1 7,000 7,000 - - 3,500 3,500 - - - - C.2 Extension of distribution system in expansion areas 1,298,688 9,456,100 185,527 185,527 185,527 185,527 185,527 185,527 185,527 945,610 945,610 945,610 945,610 945,610 945,610 945,610 945,610 945,610 945,610 i Pipes a ND 75 PVC m 9,600 22 211,200 53,000 22 1,166,000 30,171 30,171 30,171 30,171 30,171 30,171 30,171 116,600 116,600 116,600 116,600 116,600 116,600 116,600 116,600 116,600 116,600 b ND 110 PVC m 7,680 30 230,400 67,000 30 2,010,000 32,914 32,914 32,914 32,914 32,914 32,914 32,914 201,000 201,000 201,000 201,000 201,000 201,000 201,000 201,000 201,000 201,000 c ND 160 PVC m 3,840 45 172,800 33,500 45 1,507,500 24,686 24,686 24,686 24,686 24,686 24,686 24,686 150,750 150,750 150,750 150,750 150,750 150,750 150,750 150,750 150,750 150,750 ii Section valves a ND 75 Gate nos. 96 200 19,200 530 200 106,000 2,743 2,743 2,743 2,743 2,743 2,743 2,743 10,600 10,600 10,600 10,600 10,600 10,600 10,600 10,600 10,600 10,600 b ND 100 Gate nos. 77 250 19,200 670 250 167,500 2,743 2,743 2,743 2,743 2,743 2,743 2,743 16,750 16,750 16,750 16,750 16,750 16,750 16,750 16,750 16,750 16,750 c ND 150 Gate nos. 38 450 17,280 335 450 150,750 2,469 2,469 2,469 2,469 2,469 2,469 2,469 15,075 15,075 15,075 15,075 15,075 15,075 15,075 15,075 15,075 15,075 iii Fire hydrants a ND 80 nos. 23 200 4,608 201 200 40,200 658 658 658 658 658 658 658 4,020 4,020 4,020 4,020 4,020 4,020 4,020 4,020 4,020 4,020 iv Service connections a ND 15 nos. 1,600 150 240,000 11,047 150 1,657,050 34,286 34,286 34,286 34,286 34,286 34,286 34,286 165,705 165,705 165,705 165,705 165,705 165,705 165,705 165,705 165,705 165,705 b ND 25 nos. 320 250 80,000 2,209 250 552,250 11,429 11,429 11,429 11,429 11,429 11,429 11,429 55,225 55,225 55,225 55,225 55,225 55,225 55,225 55,225 55,225 55,225 v Service water meters a Domestic (ND 15) nos. 1,600 150 240,000 11,047 150 1,657,050 34,286 34,286 34,286 34,286 34,286 34,286 34,286 165,705 165,705 165,705 165,705 165,705 165,705 165,705 165,705 165,705 165,705 b Non-Domestic (ND 25) nos. 320 200 64,000 2,209 200 441,800 9,143 9,143 9,143 9,143 9,143 9,143 9,143 44,180 44,180 44,180 44,180 44,180 44,180 44,180 44,180 44,180 44,180 C.3 Other new bulk water management facilities - 55,000 - - - - - - - - - - - - 27,500 27,500 55,000 - - i Automatic Control System for pumps and reservoirs Station 25,000 - 1 25,000 25,000 - - 12,500 12,500 25,000 ii Water quality monitoring equipment Sum 30,000 - 1 30,000 30,000 - - 15,000 15,000 30,000 D. SEWERAGE SERVICE IMPROVEMENTS - 728,430 - - - - - - - - - - - - 364,215 364,215 - - - D.1 Rehabilitation/replacement of existing sewer network - 728,430 - - - - - - - - - - - - 364,215 364,215 - - - i Sewer reticulation pipes Replacement a ND 150 PVC m - 2,720 36 98,325 - - 49,163 49,163 b ND 200 PVC (OD 225) m - 340 44 15,011 - - 7,506 7,506 c ND 250 PVC (OD 280) m - 100 57 5,698 - - 2,849 2,849 d ND 315 PVC m - 100 80 7,996 - - 3,998 3,998 e ND 400 PVC m - - 111 - - - - - f ND 450 PVC m - - 146 - - - - - g Construction of manholes nos. - 65 2,500 163,000 - - 81,500 81,500 h Rehabilitation of Manhole cover and frame nos. - 249 350 87,080 - - 43,540 43,540 i New Manhole Covers only nos. - - 150 - - - - - ii Sewer reticulation pipes Grit Removal a ND 150 PVC m - 10,880 25 272,000 - - 136,000 136,000 b ND 200 PVC (OD 225) m - 1,360 25 34,000 - - 17,000 17,000 c ND 250 PVC (OD 280) m - 100 35 3,500 - - 1,750 1,750 d ND 315 PVC m - 100 45 4,500 - - 2,250 2,250 g Clearing of silted Manhole nos. - 249 150 37,320 - - 18,660 18,660 - - E. EXTENSION OF SEWERAGE SERVICES - 15,527,794 - - - - - - - 1,381,352 1,381,352 1,381,352 1,381,352 1,381,352 2,238,489 2,238,489 1,381,352 1,381,352 1,381,352 E.1 Epworth Outfall to Lyndhyrst Farm Line - 633,361 - - - - - - - - - - - - 316,681 316,681 - - - a ND 150 PVC m 36 - 36 - - - - - b ND 200 PVC (OD 225) m 44 - 44 - - - - - c ND 250 PVC (OD 280) m 57 - 1,430 57 81,483 - - 40,742 40,742 d ND 315 PVC m 80 - - 80 - - - - - e ND 400 PVC m 111 - 1,260 111 139,380 - - 69,690 69,690 f ND 450 PVC m 146 - 2,020 146 294,748 - - 147,374 147,374 g ND 525 Concrete m 375 - 375 - - - - - h ND 600 Concrete m 342 - 342 - - - - - i ND 675 Concrete m 524 - 524 - - - - - j ND 750 Concrete m 643 - 643 - - - - - k Construction of manholes nos. 2,500 - 47 2,500 117,750 - - 58,875 58,875 - - - - E.2 Epworth Wards 3 and 4 Expansion - 1,080,913 - - - - - - - - - - - - 540,456 540,456 - - - a ND 150 PVC m 36 - 36 - - - - - b ND 200 PVC (OD 225) m 44 - 4,250 44 187,643 - - 93,822 93,822 c ND 250 PVC (OD 280) m 57 - 9,600 57 547,019 - - 273,510 273,510 d ND 315 PVC m 80 - 80 - - - - - e ND 400 PVC m 111 - 111 - - - - - f ND 450 PVC m 146 - 146 - - - - - g ND 525 Concrete m 375 - 375 - - - - - h ND 600 Concrete m 342 342 - - - - - i ND 675 Concrete m 524 - 524 - - - - - j ND 750 Concrete m 643 643 - - - - k Construction of manholes nos. - 2,500 - 139 2,500 346,250 - - 173,125 173,125 D:\Projects\Zimbabwe\InvestmentPlans\WorldBank_GHWSIP_Project\CostEstimates\RealCostEstimates_No Inflation\Investment Programme - EPWORTH_Real140522.xlsx 2 of 3 Long Term Projects Medium Term Projects Greater Harare Water and Sanitation Investment Plan FS/FD Construction FS/FD Construction Appendix 9-3: Detailed Investment Cost Estimates - EPWORTH Item Unit Medium Term (upto 2020) Long Term (upto 2030) 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Qty Rate [USD] Amount Qty Rate [USD] Amount [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] E.3 Extension of sewer reticulation system in new development areas - 13,813,520 - - - - - - - 1,381,352 1,381,352 1,381,352 1,381,352 1,381,352 1,381,352 1,381,352 1,381,352 1,381,352 1,381,352 i pipes a ND 100 PVC m 27 - 80,000 27 2,160,000 - - - - - - - 216,000 216,000 216,000 216,000 216,000 216,000 216,000 216,000 216,000 216,000 b ND 160 PVC m 36 - 33,500 36 1,206,000 - - - - - - - 120,600 120,600 120,600 120,600 120,600 120,600 120,600 120,600 120,600 120,600 ii Construction of manholes nos. 2,500 - 2,270 2,500 5,675,000 - - - - - - - 567,500 567,500 567,500 567,500 567,500 567,500 567,500 567,500 567,500 567,500 iii Sewer service connections i ND 100 nos. 360 - 13,257 360 4,772,520 - - - - - - - 477,252 477,252 477,252 477,252 477,252 477,252 477,252 477,252 477,252 477,252 F. ACCOMPANYING MEASURES 4,216,119 3,249,957 18,553 498,553 138,553 2,690,978 832,378 18,553 18,553 237,039 237,039 237,039 492,039 237,039 517,839 517,839 263,528 258,028 258,028 F.1 Technical operations management 230,000 - - - 230,000 - - - - - - - - - - - - - i Establishment of meter control, testing and repair workshop Sum 1 50,000 50,000 50,000 ii Procurement of tools and equipment for operations and maintenance Sum - - iii Provision of vehicles for operation and maintenance teams Sum 1 150,000 150,000 150,000 iv Provision of vacuum tanker for septic tank emptying no.s 1 30,000 30,000 30,000 F.2 Information Communication Technology Infrastructure 176,600 - - - 176,600 - - - - - - - - - - - - - ii Supply of server nos 1 5,500 5,500 5,500 iii Supply and install Local Area Networking Sum 2 5,000 10,000 10,000 iv Supply and install Wide Area Networking Satelite 2 5,000 10,000 10,000 v Supply and install generator power back-up nos 2 3,000 6,000 6,000 vi Supply personal computers complete with software, UPS, etc. nos 10 2,000 20,000 20,000 vii Supply laptop computers nos 4 2,500 10,000 10,000 viii Supply heavy duty printer (dot-matrix) nos 3 4,500 13,500 13,500 ix Supply laser printers nos 4 400 1,600 1,600 x Supply and if appropraiate install auxiliary equipment Sum 1 100,000 100,000 100,000 F.3 Commercial operations management 1,500,000 - - - 1,500,000 - - - - - - - - - - - - - i Review/Improvement of billing and commercial operations (consultancy) Sum 1 1,000,000 1,000,000 1,000,000 ii Socio-economic surveys and customer awareness campaigns Sum 1 500,000 500,000 500,000 F.4 Management, commercial and technical information systems 140,000 - - - 140,000 - - - - - - - - - - - - - i Procurement and installation of billing and customer services software Sum 1 20,000 20,000 20,000 ii Procurement and installation of management information software Sum 1 15,000 15,000 15,000 iii Procurement of commercial operations software (various) Sum 1 50,000 50,000 50,000 iv Procurement and installation of accounting and payroll software Sum 1 15,000 15,000 15,000 iiv Procurement and installation of GIS based Network Information Systems software Sum 1 10,000 10,000 10,000 iiiv Procurement and installation of other software (asset management, hyrauli modelling etc) Sum 1 30,000 30,000 30,000 F.5 Professional services - Institutional Support 1,268,000 - - 480,000 120,000 240,000 428,000 - - - - - - - - - - - - i Advice, guidance and support in the development of institutional frameworks towards an autonomous utility Month 42 20,000 840,000 - 240,000 120,000 240,000 240,000 ii Assessment of capacity, competency and development of a comprehesive training program Month 18 20,000 360,000 240,000 120,000 iii Specific training courses (various) nos 136 500 68,000 68,000 F.6 Professional services - Feasibility, Design and Supervision 901,519 3,249,957 18,553 18,553 18,553 404,378 404,378 18,553 18,553 237,039 237,039 237,039 492,039 237,039 517,839 517,839 263,528 258,028 258,028 iv Engineering Services Sum 901,519 3,249,957 18,553 18,553 18,553 404,378 404,378 18,553 18,553 237,039 237,039 237,039 492,039 237,039 517,839 517,839 263,528 258,028 258,028 Contingency 64,934 64,934 64,934 1,415,322 1,415,322 64,934 64,934 829,637 829,637 829,637 1,722,137 829,637 1,812,437 1,812,437 922,346 903,096 903,096 Total 269,014 749,014 389,014 8,150,076 6,291,476 269,014 269,014 3,437,066 3,437,066 3,437,066 7,134,566 3,437,066 7,508,670 7,508,670 3,821,150 3,741,400 3,741,400 Cum. Total 269,014 1,018,028 1,407,042 9,557,118 15,848,595 16,117,609 16,386,623 19,823,689 23,260,755 26,697,822 33,832,388 37,269,454 44,778,124 52,286,793 56,107,943 59,849,343 63,590,742 Engineering Services 10% of physical works (A+B+C+D+E) Contractor's P&G and Physical contingencies 35% of physical works (A+B+C+D+E) Inflation 0% D:\Projects\Zimbabwe\InvestmentPlans\WorldBank_GHWSIP_Project\CostEstimates\RealCostEstimates_No Inflation\Investment Programme - EPWORTH_Real140522.xlsx 3 of 3 Long Term Projects Medium Term Projects Greater Harare Water and Sanitation Investment Plan FS/FD Construction FS/FD Construction Appendix 9-4: Detailed Investment Cost Estimates - NORTON Item Unit Medium Term (upto 2020) Long Term (upto 2030) 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Qty Rate [USD] Amount Qty Rate [USD] Amount [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] A. WATER DEMAND MANAGEMENT/NRW REDUCTION PROGRAMME 4,544,350 3,980,829 - - - 2,272,175 2,272,175 - - 122,211 122,211 122,211 1,867,211 122,211 380,661 380,661 287,818 287,818 287,818 A.1 Rehabilitation/replacement of water transmission & distribution network 462,500 - - - - 231,250 231,250 - - - - - - - - - - - - ii ND 110 PVC or less m 5,800 30 174,000 87,000 87,000 - - iii ND 160 PVC m 1,100 45 49,500 24,750 24,750 - - a ND 200 PVC m 200 75 15,000 7,500 7,500 - - b ND 250 PVC m 500 90 45,000 22,500 22,500 - - c ND 315 PVC m 200 120 24,000 12,000 12,000 - - d ND 350 DI m - 150 - - - - - e ND 400 DI m 100 200 20,000 10,000 10,000 - - f ND 450 DI m - 250 - - - - - g ND 500 DI m - 300 - - - - - h ND 600 DI m 300 450 135,000 67,500 67,500 - - i ND 750 DI m - 640 - - - - - A.2 Replacement/Installation of zone valves 232,950 - - - - 116,475 116,475 - - - - - - - - - - - - i ND 75 Gate nos. 100 200 20,000 10,000 10,000 - - ii ND 100 Gate nos. 72 250 18,000 9,000 9,000 - - iii ND 150 Gate nos. 23 450 10,350 5,175 5,175 - - iv ND 200 Gate nos. 50 800 40,000 20,000 20,000 - - v ND 250 Gate nos. 14 1,500 21,000 10,500 10,500 - - vi ND 300 Gate nos. - 2,000 - - - - - vii ND 350 Butterfly nos. 2 3,100 6,200 3,100 3,100 - - viii ND 400 Butterfly nos. - 4,000 - - - - - ix ND 450 Butterfly nos. - 5,900 - - - - - x ND 500 Butterfly nos. 1 7,000 7,000 3,500 3,500 - - xi ND 600 Butterfly nos. 12 9,200 110,400 55,200 55,200 - - xii ND 750 Butterfly nos. - 11,000 - - - - - xiii ND 800 Butterfly nos. - 13,300 - - - - - xiv ND 1000 Butterfly nos. - 15,900 - - - - - A.3 Installation of bulk meters 159,400 159,400 - - - 79,700 79,700 - - - - - - - 79,700 79,700 - - - i ND 100 Woltman type nos. 18 1,300 23,400 18 1,300 23,400 11,700 11,700 11,700 11,700 ii ND 150 Woltman type nos. 15 2,000 30,000 15 2,000 30,000 15,000 15,000 15,000 15,000 iii ND 200 Woltman type nos. 8 3,000 24,000 8 3,000 24,000 12,000 12,000 12,000 12,000 iv ND 250 Woltman type nos. - 4,000 - - 4,000 - - - - - v ND 300 Woltman type nos. 6 7,000 42,000 6 7,000 42,000 21,000 21,000 21,000 21,000 vi ND 400 Electromagnetic nos. 12,000 - 12,000 - - - - - vii ND 500 Electromagnetic nos. - 17,000 - - 17,000 - - - - - viii ND 600 Electromagnetic nos. 2 20,000 40,000 2 20,000 40,000 20,000 20,000 20,000 20,000 - A.4 Installation/Replacement of pressure reducing valves 70,000 70,000 - - - 35,000 35,000 - - - - - - - 35,000 35,000 - - - i ND 50 nos. - 1,600 - 1,600 - - - - - ii ND 80 nos. - 1,800 - 1,800 - - - - - iii ND 100 nos. - 2,300 - 2,300 - - - - - iv ND 150 nos. - 3,600 - 3,600 - - - - - v ND 200 nos. - 6,200 - 6,200 - - - - - vi ND 250 nos. - 8,800 - 8,800 - - - - - vii ND 300 nos. 5 14,000 70,000 5 14,000 70,000 35,000 35,000 35,000 35,000 A.5 Replacement of service connections 1,784,500 287,500 - - - 892,250 892,250 - - - - - - - 143,750 143,750 - - - i Domestic (ND 15) (OD 20) nos. 11,500 150 1,725,000 862,500 862,500 - - ii Non-Domestic (ND 25) nos. 100 250 25,000 12,500 12,500 - - iii Installation of flow limiter (done with service connection replacement) nos. 11,500 3 34,500 3 - 17,250 17,250 - - iv Removal of flow Limiters nos. 25 - 11,500 25 287,500 - - 143,750 143,750 - A.6 Replacement of service water meters 1,745,000 3,463,929 - - - 872,500 872,500 - - 122,211 122,211 122,211 1,867,211 122,211 122,211 122,211 287,818 287,818 287,818 i Domestic (ND 15) nos. 11,500 150 1,725,000 20,547 150 3,082,049 - - - 862,500 862,500 - - 96,482 96,482 96,482 1,821,482 96,482 96,482 96,482 227,225 227,225 227,225 ii Non-Domestic (ND 25) nos. 100 200 20,000 1,909 200 381,880 - - - 10,000 10,000 - - 25,729 25,729 25,729 45,729 25,729 25,729 25,729 60,593 60,593 60,593 A.7 NRW Reduction programme 90,000 - - - - 45,000 45,000 - - - - - - - - - - - - i Network Mapping, Network investigations and repair/replacement programme Sum 1 15,000 15,000 7,500 7,500 - - ii Customer database cleanup and awareness campaigns Sum 1 75,000 75,000 37,500 37,500 - - B. WATER SUPPLY SERVICE IMPROVEMENTS 76,800 28,000 - - - 38,400 38,400 - - - - - - - 14,000 14,000 - - - B.1 Rehabilitation of Existing Water Tanks 76,800 28,000 - - - 38,400 38,400 - - - - - - - 14,000 14,000 - - - - - a ND 300 Gate nos. 6 2,000 12,000 6,000 6,000 - - a ND 600 Butterfly nos. 4 9,200 36,800 18,400 18,400 - - c Level Control Valve 300 nos. 2 14,000 28,000 2 14,000 28,000 14,000 14,000 14,000 14,000 - - - - C. EXTENSION OF WATER SUPPLY SERVICES 10,594,667 18,494,508 400,842 400,842 400,842 4,295,229 4,295,229 400,842 400,842 539,130 539,130 539,130 539,130 539,130 7,090,735 7,090,735 539,130 539,130 539,130 C.1 Expansion of Primary and Secondary Distribution 7,103,625 2,686,210 - - - 3,551,813 3,551,813 - - - - - - - 1,343,105 1,343,105 - - - i Primary Network - Morton Jafray to Hilside Tanks - - - - a ND 500 DI m 3,851 300 1,155,300 - 300 - 577,650 577,650 - - b ND 500 Electromagnetic nos. 2 17,000 34,000 2 17,000 34,000 17,000 17,000 17,000 17,000 c ND 500 Butterfly nos. 3 7,000 21,000 - 7,000 - 10,500 10,500 - - ii Primary Network - (a) & (b) Main feeds from Norton Tanks - - - - a ND 600 DI m 13,150 450 5,917,500 - 450 - 2,958,750 2,958,750 - - b ND 600 Electromagnetic nos. 4 20,000 80,000 4 20,000 80,000 40,000 40,000 40,000 40,000 c ND 600 Butterfly nos. 4 9,200 36,800 - 9,200 - 18,400 18,400 - - - - - - iii Secondary Network - (1) Supply to Ward 6 a ND 400 DI m 2,995 200 599,000 200 299,500 299,500 - - b ND 400 Butterfly nos. 3 4,000 12,000 4,000 6,000 6,000 - - c ND 400 Electromagnetic nos. 2 12,000 24,000 12,000 - 12,000 12,000 - - iv Secondary Network - (2) Secondary Network in Ward 6 - - - - a ND 200 PVC m 2,994 75 224,550 75 - 112,275 112,275 - - b ND 200 Gate Valve nos. 2 800 1,600 800 - 800 800 - - c ND 200 Woltman type Water meter nos. 1 3,000 3,000 3,000 - 1,500 1,500 - - v Secondary Network - (3) Ward 6 to Ward 13 a ND 315 PVC m 1,365 120 163,800 120 81,900 81,900 - - b ND 300 Gate nos. 2 2,000 4,000 2,000 2,000 2,000 - - c ND 300 Woltman type nos. 2 7,000 14,000 6 7,000 42,000 7,000 7,000 21,000 21,000 vi Secondary Network - (4) Ward 12/13 boundary line - - - - a ND 200 PVC m 75 - 1,662 75 124,650 - - 62,325 62,325 b ND 200 Gate Valve nos. 800 - 2 800 1,600 - - 800 800 c ND 200 Woltman type Water meter nos. 3,000 - 1 3,000 3,000 - - 1,500 1,500 vii Secondary Network - (6) Improved Link Ward 13 to 12 a ND 200 PVC m 75 - 1,390 75 104,250 - - 52,125 52,125 b ND 200 Gate Valve nos. 800 - 2 800 1,600 - - 800 800 c ND 200 Woltman type Water meter nos. 3,000 - 1 3,000 3,000 - - 1,500 1,500 viii Secondary Network - (7), (8) &(9) Interim and Final Supply Connection to Ward 4 a ND 160 PVC m 455 45 20,475 45 - 10,238 10,238 - - b ND 250 PVC m - 90 - 2,599 90 233,910 - - 116,955 116,955 c ND 350 DI m - 150 - 852 150 127,800 - - 63,900 63,900 D:\Projects\Zimbabwe\InvestmentPlans\WorldBank_GHWSIP_Project\CostEstimates\RealCostEstimates_No Inflation\Investment Programme - Norton_Real140522.xlsx 1 of 3 Long Term Projects Medium Term Projects Greater Harare Water and Sanitation Investment Plan FS/FD Construction FS/FD Construction Appendix 9-4: Detailed Investment Cost Estimates - NORTON Item Unit Medium Term (upto 2020) Long Term (upto 2030) 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Qty Rate [USD] Amount Qty Rate [USD] Amount [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] d ND 150 Gate nos. 2 450 900 450 - 450 450 - - e ND 250 Gate nos. - 1,500 - 1 1,500 1,500 - - 750 750 f ND 350 Butterfly nos. - 3,100 - 1 3,100 3,100 - - 1,550 1,550 g ND 150 Woltman type nos. 1 2,000 2,000 - 2,000 - 1,000 1,000 - - h ND 250 Woltman type nos. - 4,000 - 1 4,000 4,000 - - 2,000 2,000 i ND 300 Woltman type nos. - 7,000 - 1 7,000 7,000 - - 3,500 3,500 ix Secondary Network - (10), (11) New Supply Line Ward 4 to Chegutu Extension and within Extension a ND 250 PVC m 90 - 2,285 90 205,650 - - 102,825 102,825 b ND 315 PVC m 120 - 5,760 120 691,200 - - 345,600 345,600 c ND 450 DI m 250 - 3,925 250 981,250 - - 490,625 490,625 d ND 250 Gate nos. 1,500 - 2 1,500 3,000 - - 1,500 1,500 e ND 300 Gate nos. 2,000 - 4 2,000 8,000 - - 4,000 4,000 f ND 450 Butterfly nos. 5,900 - 3 5,900 17,700 - - 8,850 8,850 g ND 250 Woltman type nos. 4,000 - 1 4,000 4,000 - - 2,000 2,000 h ND 300 Woltman type nos. 7,000 - 2 7,000 14,000 - - 7,000 7,000 i ND 400 Electromagnetic nos. 12,000 - 2 12,000 24,000 - - 12,000 12,000 - - - - C.2 Construction of new storage reservoirs - 10,400,000 - - - - - 5,200,000 5,200,000 - - - i Expansion of Norton Hillside Storage m3 400 - 26,000 400 10,400,000 - - 5,200,000 5,200,000 C.3 Extension of distribution system in expansion areas 2,805,892 5,391,298 400,842 400,842 400,842 400,842 400,842 400,842 400,842 539,130 539,130 539,130 539,130 539,130 539,130 539,130 539,130 539,130 539,130 i Pipes a ND 75 PVC m 27,000 22 594,000 52,000 22 1,144,000 84,857 84,857 84,857 84,857 84,857 84,857 84,857 114,400 114,400 114,400 114,400 114,400 114,400 114,400 114,400 114,400 114,400 b ND 110 PVC m 22,000 30 660,000 42,000 30 1,260,000 94,286 94,286 94,286 94,286 94,286 94,286 94,286 126,000 126,000 126,000 126,000 126,000 126,000 126,000 126,000 126,000 126,000 c ND 160 PVC m 11,000 45 495,000 21,000 45 945,000 70,714 70,714 70,714 70,714 70,714 70,714 70,714 94,500 94,500 94,500 94,500 94,500 94,500 94,500 94,500 94,500 94,500 ii Section valves a ND 75 Gate nos. 270 200 54,000 520 200 104,000 7,714 7,714 7,714 7,714 7,714 7,714 7,714 10,400 10,400 10,400 10,400 10,400 10,400 10,400 10,400 10,400 10,400 b ND 100 Gate nos. 220 250 55,000 420 250 105,000 7,857 7,857 7,857 7,857 7,857 7,857 7,857 10,500 10,500 10,500 10,500 10,500 10,500 10,500 10,500 10,500 10,500 c ND 150 Gate nos. 110 450 49,500 210 450 94,500 7,071 7,071 7,071 7,071 7,071 7,071 7,071 9,450 9,450 9,450 9,450 9,450 9,450 9,450 9,450 9,450 9,450 iii Fire hydrants a ND 80 nos. 66 200 13,200 126 200 25,200 1,886 1,886 1,886 1,886 1,886 1,886 1,886 2,520 2,520 2,520 2,520 2,520 2,520 2,520 2,520 2,520 2,520 iv Service connections a ND 15 nos. 4,503 5 22,513 8,716 5 43,581 3,216 3,216 3,216 3,216 3,216 3,216 3,216 4,358 4,358 4,358 4,358 4,358 4,358 4,358 4,358 4,358 4,358 b ND 25 nos. 901 8 7,204 1,743 8 13,946 1,029 1,029 1,029 1,029 1,029 1,029 1,029 1,395 1,395 1,395 1,395 1,395 1,395 1,395 1,395 1,395 1,395 v Service water meters a Domestic (ND 15) nos. 4,503 150 675,375 8,716 150 1,307,425 96,482 96,482 96,482 96,482 96,482 96,482 96,482 130,743 130,743 130,743 130,743 130,743 130,743 130,743 130,743 130,743 130,743 b Non-Domestic (ND 25) nos. 901 200 180,100 1,743 200 348,647 25,729 25,729 25,729 25,729 25,729 25,729 25,729 34,865 34,865 34,865 34,865 34,865 34,865 34,865 34,865 34,865 34,865 C.4 Other new bulk water management facilities 80,000 - - - - 40,000 40,000 - - - - - - - - - - - - i Automatic Control System for pumps and reservoirs Station 2 25,000 50,000 25,000 25,000 - - - ii Water quality monitoring equipment Sum 1 30,000 30,000 15,000 15,000 - - - D. SEWERAGE SERVICE IMPROVEMENTS 7,855,077 758,400 - - - 3,927,539 3,927,539 - - - - - - - 379,200 379,200 - - - D.1 Rehabilitation of Norton WWTW 3,402,667 - - - - 1,701,333 1,701,333 - - - - - - - - - - - - i Rehabilitation of old Works ML 3.6 293,333 1,056,000 528,000 528,000 - - ii Rehabilitation and Expansion of New Works ML 4 586,667 2,346,667 4,000 - 1,173,333 1,173,333 - - D.2 New Pumps and Force Main to New SR Irrigation System 2,683,768 156,000 - - - 1,341,884 1,341,884 - - - - - - - 78,000 78,000 - - - i Sewage Pumps 322m3/hr @80m Head No. 2 78,000 156,000 2 78,000 156,000 78,000 78,000 78,000 78,000 ii ND 315 Class 9 HDPE m 11,200 226 2,525,768 1,262,884 1,262,884 - - iii ND 300 Gate nos. 1 2,000 2,000 1,000 1,000 - - - - - - D.3 Establishment of New Slow Rate Irrigation Disposal System 1,261,400 450,500 - - - 630,700 630,700 - - - - - - - 225,250 225,250 - - - ii Wastewater Slow Rate (irrigation) disposal system - - - - a Irrigation Set Up Ha 170 4,770 810,900 4,770 - 405,450 405,450 - - b Irrigation Pumps and Equipment Ha 170 2,650 450,500 170 2,650 450,500 225,250 225,250 225,250 225,250 - - - - D.4 Rehabilitate Existing Sewage Pump Stations 182,243 31,000 - - - 91,121 91,121 - - - - - - - 15,500 15,500 - - - i Tangatara SPS - - - - a ND 150 Class 9 HDPE m 785 77 60,793 30,396 30,396 - - b ND 150 Gate nos. 1 450 450 225 225 - - c Sewage Pumps 36m3/hr @20m Head nos. 2 8,000 16,000 2 8,000 16,000 8,000 8,000 8,000 8,000 d Standby Generator No. 1 15,000 15,000 1 15,000 15,000 7,500 7,500 7,500 7,500 ii Maridale SPS - - - - a Sewage Pumps 136m3/hr @11m Head No. 2 45,000 90,000 45,000 - 45,000 45,000 - - b Standby Generator No. 1 30,000 30,000 1 30,000 30,000 15,000 15,000 15,000 15,000 iii Narira SPS a Standby Generator No. 1 15,000 15,000 1 15,000 15,000 7,500 7,500 7,500 7,500 - - - - D.5 Rehabilitation/replacement of existing sewer network 302,500 98,400 - - - 151,250 151,250 - - - - - - - 49,200 49,200 - - - i Sewer reticulation pipes in some areas a ND 150 PVC m 400 75 30,000 75 - 15,000 15,000 - - b ND 200 PVC (OD 225) m - 75 - 75 - - - - - c ND 250 PVC (OD 280) m 400 90 36,000 90 - 18,000 18,000 - - d ND 315 PVC m 500 120 60,000 120 - 30,000 30,000 - - e ND 400 PVC m - 165 - 165 - - - - - f ND 450 PVC m 100 190 19,000 190 - 9,500 9,500 - - g ND 450 ST on Pipe Bridge m - 246 - 400 246 98,400 - - 49,200 49,200 g Construction of manholes nos. 23 2,500 57,500 2,500 - 28,750 28,750 - - h Rehabilitation of Manhole cover and frame nos. 200 350 70,000 350 - 35,000 35,000 - - i New Manhole Covers only nos. 200 150 30,000 150 - 15,000 15,000 - - - - E. EXTENSION OF SEWERAGE SERVICES 4,923,700 16,330,973 703,386 703,386 703,386 703,386 703,386 703,386 703,386 947,830 947,830 947,830 947,830 947,830 4,374,167 4,374,167 947,830 947,830 947,830 E.1 New Norton WWTW (anaerobic/ Facultative Ponds) - 4,433,308 - - - - - - - - - - - - 2,216,654 2,216,654 - - - i Anaerobic Ponds at Ward 6 sum 1 530,000 530,000 - - 265,000 265,000 ii Facultative Ponds at Chegutu Extension sum 1 2,502,660 2,502,660 - - 1,251,330 1,251,330 iii Sewage Pump Station from Ward 6 to facultative Ponds - - - - a Sewage Pumps 394m3/hr @47m No. 2 55,000 110,000 - - 55,000 55,000 c Booster Pump Suction and Discharge Ppipework No. 4 6,000 24,000 - - 12,000 12,000 d Booster Pump Station Building m2 60 1,200 72,000 - - 36,000 36,000 e Booster Pump Station Ancilliaries Sum 1 10,000 10,000 - - 5,000 5,000 iv Force Main from Ward 6 to facultative Ponds a ND 315 Class 9 HDPE m 6,586 77 510,040 - - 255,020 255,020 b ND 300 Gate nos. 1 2,000 2,000 - - 1,000 1,000 iv Sewage Pump Station from facultative Ponds to SR Irrigation Disposal Site - - - - a Sewage Pumps 718m3/hr @40m No. 3 78,000 234,000 - - 117,000 117,000 c Booster Pump Suction and Discharge Ppipework No. 2 6,000 12,000 - - 6,000 6,000 d Booster Pump Station Building Refurbishment m2 60 1,200 72,000 - - 36,000 36,000 e Booster Pump Station Building Sum 1 10,000 10,000 - - 5,000 5,000 iv Force Main from facultative Ponds to SR Irrigation Disposal Site a ND 315 Class 9 HDPE m 4,424 77 342,608 - - 171,304 171,304 b ND 300 Gate nos. 1 2,000 2,000 - - 1,000 1,000 E.2 New Secondary Sewerage Wards 12 and 13 - 1,407,850 - - - - - - - - - - - - 703,925 703,925 - - - a ND 150 PVC m 75 - 75 - - - - - b ND 200 PVC (OD 225) m 75 - 2,419 75 181,425 - - 90,713 90,713 c ND 250 PVC (OD 280) m 90 - 2,643 90 237,870 - - 118,935 118,935 d ND 315 PVC m 120 - 4,139 120 496,680 - - 248,340 248,340 D:\Projects\Zimbabwe\InvestmentPlans\WorldBank_GHWSIP_Project\CostEstimates\RealCostEstimates_No Inflation\Investment Programme - Norton_Real140522.xlsx 2 of 3 Long Term Projects Medium Term Projects Greater Harare Water and Sanitation Investment Plan FS/FD Construction FS/FD Construction Appendix 9-4: Detailed Investment Cost Estimates - NORTON Item Unit Medium Term (upto 2020) Long Term (upto 2030) 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Qty Rate [USD] Amount Qty Rate [USD] Amount [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] e ND 400 PVC m 165 - 525 165 86,625 - - 43,313 43,313 f Construction of manholes nos. - 2,500 - 162 2,500 405,250 - - 202,625 202,625 - - - - E.3 New Secondary Sewerage Chegutu Expansion Area - 1,011,515 - - - - - - - - - - - - 505,758 505,758 - - - a ND 150 PVC m 75 - 75 - - - - - b ND 200 PVC (OD 225) m 75 - 1,807 75 135,525 - - 67,763 67,763 c ND 250 PVC (OD 280) m 90 - 2,709 90 243,810 - - 121,905 121,905 d ND 315 PVC m 120 - 1,192 120 143,040 - - 71,520 71,520 e ND 400 PVC m 165 - 1,216 165 200,640 - - 100,320 100,320 f Construction of manholes nos. - 2,500 - 115 2,500 288,500 - - 144,250 144,250 E.4 Extension of sewer reticulation system in new development areas 4,923,700 9,478,300 703,386 703,386 703,386 703,386 703,386 703,386 703,386 947,830 947,830 947,830 947,830 947,830 947,830 947,830 947,830 947,830 947,830 i pipes a ND 100 PVC m 24,700 36 889,200 47,800 36 1,720,800 127,029 127,029 127,029 127,029 127,029 127,029 127,029 172,080 172,080 172,080 172,080 172,080 172,080 172,080 172,080 172,080 172,080 b ND 160 PVC m 10,300 75 772,500 19,900 75 1,492,500 110,357 110,357 110,357 110,357 110,357 110,357 110,357 149,250 149,250 149,250 149,250 149,250 149,250 149,250 149,250 149,250 149,250 ii Construction of manholes nos. 700 2,500 1,750,000 1,354 2,500 3,385,000 250,000 250,000 250,000 250,000 250,000 250,000 250,000 338,500 338,500 338,500 338,500 338,500 338,500 338,500 338,500 338,500 338,500 iii Sewer service connections i ND 100 nos. 4,200 360 1,512,000 8,000 360 2,880,000 216,000 216,000 216,000 216,000 216,000 216,000 216,000 288,000 288,000 288,000 288,000 288,000 288,000 288,000 288,000 288,000 288,000 F. ACCOMPANYING MEASURES 5,107,059 3,959,271 110,423 590,423 230,423 2,649,273 1,551,673 110,423 110,423 160,917 160,917 160,917 335,417 160,917 1,223,876 1,223,876 177,478 177,478 177,478 F.1 Technical operations management 430,000 - - - 430,000 - - - - - - - - - - - - - i Establishment of meter control, testing and repair workshop Sum 1 50,000 50,000 50,000 ii Procurement of tools and equipment for operations and maintenance Sum 1 200,000 200,000 200,000 iii Provision of vehicles for operation and maintenance teams Sum 1 150,000 150,000 150,000 iv Provision of vacuum tanker for septic tank emptying no.s 1 30,000 30,000 30,000 F.2 Information Communication Technology Infrastructure 176,600 - - - 176,600 - - - - - - - - - - - - - ii Supply of server nos 1 5,500 5,500 5,500 iii Supply and install Local Area Networking Sum 2 5,000 10,000 10,000 iv Supply and install Wide Area Networking Satelite 2 5,000 10,000 10,000 v Supply and install generator power back-up nos 2 3,000 6,000 6,000 vi Supply personal computers complete with software, UPS, etc. nos 10 2,000 20,000 20,000 vii Supply laptop computers nos 4 2,500 10,000 10,000 viii Supply heavy duty printer (dot-matrix) nos 3 4,500 13,500 13,500 ix Supply laser printers nos 4 400 1,600 1,600 x Supply and if appropraiate install auxiliary equipment Sum 1 100,000 100,000 100,000 F.3 Commercial operations management 350,000 - - - 350,000 - - - - - - - - - - - - - i Review/Improvement of billing and commercial operations (consultancy) Sum 1 200,000 200,000 200,000 ii Socio-economic surveys and customer awareness campaigns Sum 1 150,000 150,000 150,000 F.4 Management, commercial and technical information systems 83,000 - - - 83,000 - - - - - - - - - - - - - i Procurement and installation of billing and customer services software Sum 1 20,000 20,000 20,000 ii Procurement and installation of management information software Sum 1 15,000 15,000 15,000 iii Procurement of commercial operations software (various) Sum 1 10,000 10,000 10,000 iv Procurement and installation of accounting and payroll software Sum 1 8,000 8,000 8,000 iiv Procurement and installation of GIS based Network Information Systems software Sum 1 10,000 10,000 10,000 iiiv Procurement and installation of other software (asset management, hyrauli modelling etc) Sum 1 20,000 20,000 20,000 F.5 Professional services - Institutional Support 1,268,000 - - 480,000 120,000 486,000 428,000 - - - - - - - - - - - - i Advice, guidance and support in the development of institutional frameworks towards an autonomous utility Month 42 20,000 840,000 - 240,000 120,000 240,000 240,000 ii Assessment of capacity, competency and development of a comprehesive training program Month 18 20,000 360,000 240,000 240,000 120,000 iii Specific training courses (various) nos 136 500 68,000 6,000 68,000 F.6 Professional services - Feasibility, Design and Supervision 2,799,459 3,959,271 110,423 110,423 110,423 1,123,673 1,123,673 110,423 110,423 160,917 160,917 160,917 335,417 160,917 1,223,876 1,223,876 177,478 177,478 177,478 iv Engineering Services Sum 2,799,459 3,959,271 110,423 110,423 110,423 1,123,673 1,123,673 110,423 110,423 160,917 160,917 160,917 335,417 160,917 1,223,876 1,223,876 177,478 177,478 177,478 Contingency 386,480 386,480 386,480 3,932,855 3,932,855 386,480 386,480 563,210 563,210 563,210 1,173,960 563,210 4,283,567 4,283,567 621,172 621,172 621,172 Total 1,601,130 2,081,130 1,721,130 17,818,856 16,721,256 1,601,130 1,601,130 2,333,297 2,333,297 2,333,297 4,863,547 2,333,297 17,746,205 17,746,205 2,573,428 2,573,428 2,573,428 Cum. Total 1,601,130 3,682,259 5,403,389 23,222,245 39,943,502 41,544,632 43,145,761 45,479,059 47,812,356 50,145,653 55,009,200 57,342,498 75,088,703 92,834,908 95,408,336 97,981,763 100,555,191 Engineering Services 10% of physical works (A+B+C+D+E) Contractor's P&G and 35% of physical works (A+B+C+D+E) Inflation 0% D:\Projects\Zimbabwe\InvestmentPlans\WorldBank_GHWSIP_Project\CostEstimates\RealCostEstimates_No Inflation\Investment Programme - Norton_Real140522.xlsx 3 of 3 Long Term Projects Medium Term Projects Greater Harare Water and Sanitatation Investment Plan FS/FD Construction FS/FD Construction Appendix 9-5: Detailed Investment Cost Estimates - RUWA Item Unit Medium Term (upto 2020) Long Term (upto 2030) 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Qty Rate [USD] Amount Qty Rate [USD] Amount [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] - A. WATER DEMAND MANAGEMENT/NRW REDUCTION PROGRAMME 3,333,200 5,213,857 - - - - 1,666,600 1,666,600 - - 254,912 254,912 254,912 2,154,912 254,912 341,412 341,412 452,157 452,157 452,157 - A.1 Rehabilitation/replacement of water transmission & distribution network 757,000 - - - - - 378,500 378,500 - - - - - - - - - - - - i ND 110 PVC or less m 9,000 30 270,000 - 135,000 135,000 - - ii ND 160 PVC m 1,600 45 72,000 - 36,000 36,000 - - iii ND 200 PVC m 600 75 45,000 - 22,500 22,500 - - iv ND 250 PVC m 1,600 90 144,000 - 72,000 72,000 - - v ND 315 PVC m 300 120 36,000 - 18,000 18,000 - - vi ND 350 DI m 500 150 75,000 - 37,500 37,500 - - vii ND 400 DI m - 200 - - - - - - viii ND 450 DI m 100 250 25,000 - 12,500 12,500 - - ix ND 500 DI m - 300 - - - - - - x ND 600 DI m 200 450 90,000 - 45,000 45,000 - - xi ND 750 DI m - 640 - - - - - - - A.2 Replacement/Installation of zone valves 88,200 - - - - - 44,100 44,100 - - - - - - - - - - - - i ND 75 Gate nos. 70 200 14,000 - 7,000 7,000 - - ii ND 100 Gate nos. 20 250 5,000 - 2,500 2,500 - - iii ND 150 Gate nos. 10 450 4,500 - 2,250 2,250 - - iv ND 200 Gate nos. 20 800 16,000 - 8,000 8,000 - - v ND 250 Gate nos. 5 1,500 7,500 - 3,750 3,750 - - vi ND 300 Gate nos. 10 2,000 20,000 - 10,000 10,000 - - vii ND 350 Butterfly nos. 2 3,100 6,200 - 3,100 3,100 - - viii ND 400 Butterfly nos. 2 4,000 8,000 - 4,000 4,000 - - ix ND 450 Butterfly nos. - 5,900 - - - - - - x ND 500 Butterfly nos. 1 7,000 7,000 - 3,500 3,500 - - - A.3 Installation of bulk meters 103,000 103,000 - - - - 51,500 51,500 - - - - - - - 51,500 51,500 - - - i ND 100 Woltman type nos. - 1,300 - - 1,300 - - - - - - ii ND 150 Woltman type nos. - 2,000 - - 2,000 - - - - - - iii ND 200 Woltman type nos. 8 3,000 24,000 8 3,000 24,000 - 12,000 12,000 12,000 12,000 iv ND 250 Woltman type nos. 12 4,000 48,000 12 4,000 48,000 - 24,000 24,000 24,000 24,000 v ND 300 Woltman type nos. 2 7,000 14,000 2 7,000 14,000 - 7,000 7,000 7,000 7,000 vi ND 400 Electromagnetic nos. 12,000 - 12,000 - - - - - - vii ND 500 Electromagnetic nos. 1 17,000 17,000 1 17,000 17,000 - 8,500 8,500 8,500 8,500 - - A.4 Installation/Replacement of pressure reducing valves 70,000 70,000 - - - - 35,000 35,000 - - - - - - - 35,000 35,000 - - - i ND 300 nos. 5 14,000 70,000 5 14,000 70,000 - 35,000 35,000 35,000 35,000 - A.5 Replacement of service connections 325,000 - - - - - 162,500 162,500 - - - - - - - - - - - - i Domestic (ND 15) (OD 20) nos. 2,000 150 300,000 - 150,000 150,000 - - ii Non-Domestic (ND 25) nos. 100 250 25,000 - 12,500 12,500 - - - - A.6 Replacement of service water meters 1,900,000 5,040,857 - - - - 950,000 950,000 - - 254,912 254,912 254,912 2,154,912 254,912 254,912 254,912 452,157 452,157 452,157 i Domestic (ND 15) nos. 12,000 150 1,800,000 28,531 150 4,279,624 - - - - 900,000 900,000 - - 201,246 201,246 201,246 2,001,246 201,246 201,246 201,246 356,966 356,966 356,966 ii Non-Domestic (ND 25) nos. 500 200 100,000 3,806 200 761,233 - - - - 50,000 50,000 - - 53,666 53,666 53,666 153,666 53,666 53,666 53,666 95,191 95,191 95,191 - - A.7 NRW Reduction programme 90,000 - - - - - 45,000 45,000 - - - - - - - - - - - - i Network Mapping, Network investigations and repair/replacement programme Sum 1 15,000 15,000 - 7,500 7,500 - - ii Customer database cleanup and awareness campaigns Sum 1 75,000 75,000 - 37,500 37,500 - - - B. WATER SUPPLY SERVICE IMPROVEMENTS 2,432,250 506,850 - - - - 1,216,125 1,216,125 - - - - - - - 253,425 253,425 - - - - B.1 Rehabilitation of Existing WTW 2,432,250 506,850 - - - - 1,216,125 1,216,125 - - - - - - - 253,425 253,425 - - - - - - i Corrosion protection to existng 2.5MLD FC Reactor WT Vessel m2 412 50 20,600 412 50 20,600 - 10,300 10,300 10,300 10,300 ii Rehabilitation of FC Reactor Units - - - - - a 5MLD Unit MLD 5 25,500 127,500 5 25,500 127,500 - 63,750 63,750 63,750 63,750 b 2.5MLD Unit (Steel) MLD 3 25,500 63,750 3 25,500 63,750 - 31,875 31,875 31,875 31,875 c 10MLD Unit (2018 Install) MLD - 25,500 - 10 25,500 255,000 - - - 127,500 127,500 iii Rehabilitation / Extension of Chemical Dosing Facilities - - - - - a Provision of 3kW Solar Array with Controller and Batteries for dosing kW 3 5,000 15,000 3 3,000 9,000 - 7,500 7,500 4,500 4,500 b Replacement of dosing equipment nos 1 10,000 10,000 1 6,000 6,000 - 5,000 5,000 3,000 3,000 iv Complete drying beds m2 400 250 100,000 - 50,000 50,000 - - v Completeion of WTW treated water reservoir 4000m3 - - - - - a Concrete Reservoir 4000m3 m3 4,000 500 2,000,000 - 1,000,000 1,000,000 - - b Supply Pipework DN750 m 110 640 70,400 - 35,200 35,200 - - c Level Control Valve DN750 nos. 1 25,000 25,000 1 25,000 25,000 - 12,500 12,500 12,500 12,500 - - - - - C. EXTENSION OF WATER SUPPLY SERVICES 12,154,785 26,769,420 - 1,140,326 1,140,326 1,140,326 3,226,576 3,226,576 1,140,326 1,140,326 881,142 881,142 881,142 881,142 881,142 9,860,142 9,860,142 881,142 881,142 881,142 - C.1 Proposed WTW Expansion 1,062,500 - - - - - 531,250 531,250 - - - - - - - - - - - - - - - i Water Production, Treatment and Transmission Facilities - - - a 12.5ML Expansion of FC Reactor WTW ML 12.5 85,000 1,062,500 - 531,250 531,250 - - - C.2 Primary and Secondary Distribution System Expansion 2,630,000 1,958,000 - - - - 1,315,000 1,315,000 - - - - - - - 979,000 979,000 - - - - - - - - i Ruwa WTW Booster Pump Station - - - - - a Water booster pump sets Transfer to Mutare Road 415m3/hr @25m nos. 3 55,000 165,000 3 55,000 165,000 - 82,500 82,500 82,500 82,500 c Booster Pump Suction and Discharge Ppipework nos. 6 6,000 36,000 - - - 18,000 18,000 - - d Water booster pump sets into supply 480m3/hr @25m nos. 4 55,000 220,000 4 55,000 220,000 - 110,000 110,000 110,000 110,000 f Booster Pump Suction and Discharge Ppipework nos. 8 6,000 48,000 - - - 24,000 24,000 - - g Booster Pump Station Building m2 120 1,200 144,000 - - - 72,000 72,000 - - h Booster Pump Station Ancilliaries Sum 1 10,000 10,000 - - - 5,000 5,000 - - - - - - - iii Mutare Road Water Booster Pump Station - - - - - a Water booster pump sets Transfer to Mutare Road 545m3/hr @20m nos. 3 55,000 165,000 3 55,000 165,000 - 82,500 82,500 82,500 82,500 c Booster Pump Suction and Discharge Ppipework nos. 6 6,000 36,000 - - - 18,000 18,000 - - d Booster Pump Station Building Refurbishment m2 90 600 54,000 - - - 27,000 27,000 - - e Booster Pump Station Ancilliaries Sum 1 10,000 10,000 - - - 5,000 5,000 - - - - - - - iii Primary Network - (a) Ruwa WTW to Mutare Road Tanks - - - - - a ND 400 DI m 4,650 200 930,000 - - 465,000 465,000 - - b ND 400 Electromagnetic Meter nos. 2 12,000 24,000 2 12,000 24,000 - 12,000 12,000 12,000 12,000 c ND 400 Butterfly Valve nos. 3 4,000 12,000 - - 6,000 6,000 - - - - - - - iv Primary Network - (b) Mutare Road Tanks to Southern Ruwa - - - - - D:\Projects\Zimbabwe\InvestmentPlans\WorldBank_GHWSIP_Project\CostEstimates\RealCostEstimates_No Inflation\Investment Programme - RUWA_Real140522.xlsx 1 of 4 Long Term Projects Medium Term Projects Greater Harare Water and Sanitatation Investment Plan FS/FD Construction FS/FD Construction Appendix 9-5: Detailed Investment Cost Estimates - RUWA Item Unit Medium Term (upto 2020) Long Term (upto 2030) 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Qty Rate [USD] Amount Qty Rate [USD] Amount [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] a ND 315 PVC m 775 120 93,000 - - 46,500 46,500 - - b ND 400 DI m 3,260 200 652,000 - - 326,000 326,000 - - c ND 300 Woltman type nos. 1 7,000 7,000 1 7,000 7,000 - 3,500 3,500 3,500 3,500 d ND 400 Electromagnetic Meter nos. 1 12,000 12,000 1 12,000 12,000 - 6,000 6,000 6,000 6,000 e ND 300 Gate nos. 2 2,000 4,000 - - 2,000 2,000 - - f ND 400 Butterfly Valve nos. 2 4,000 8,000 - - 4,000 4,000 - - - - - - - v Primary Network - (c) ZIMRE to Ruwa WTW - - - - - a ND 500 DI m 300 - 4,250 300 1,275,000 - - - 637,500 637,500 b ND 500 Electromagnetic nos. 17,000 - 2 17,000 34,000 - - - 17,000 17,000 c ND 500 Butterfly nos. 7,000 - 4 7,000 28,000 - - - 14,000 14,000 d ND 300 PRV nos. 14,000 - 1 14,000 14,000 - - - 7,000 7,000 - - - - - vi Secondary Network - (d) Athelney Farm - - - - - a ND 200 PVC m 75 - 3,720 - - - - - - b ND 200 Gate Valve nos. 800 - 4 - - - - - - c ND 200 Woltman type Water meter nos. 3,000 - 2 3,000 6,000 - - - 3,000 3,000 - - - - - vii Secondary Network - (e) Mara Farm - - - - - a ND 250 PVC m 90 - 7,900 - - - - - b ND 250 Gate Valve nos. 1,500 - 5 - - - - - c ND 250 Woltman type water meter nos. 4,000 - 2 4,000 8,000 - - - 4,000 4,000 - - - - - C.3 Construction of new storage reservoirs 200,000 16,000,000 - - - - 100,000 100,000 - - - - - - - 8,000,000 8,000,000 - - - i Replacement of Mutare Road Elevated m3 200 1,000 200,000 - 100,000 100,000 - - ii Ruwa WTW Clear Water Tanks Expansion 3 400 - 40,000 400 16,000,000 - m - - 8,000,000 8,000,000 - - - - - C.4 Extension of distribution system in expansion areas 7,982,285 8,811,420 - 1,140,326 1,140,326 1,140,326 1,140,326 1,140,326 1,140,326 1,140,326 881,142 881,142 881,142 881,142 881,142 881,142 881,142 881,142 881,142 881,142 i Pipes - a ND 75 PVC m 45,000 22 990,000 49,000 22 1,078,000 - 141,429 141,429 141,429 141,429 141,429 141,429 141,429 107,800 107,800 107,800 107,800 107,800 107,800 107,800 107,800 107,800 107,800 b ND 110 PVC m 56,000 30 1,680,000 62,000 30 1,860,000 - 240,000 240,000 240,000 240,000 240,000 240,000 240,000 186,000 186,000 186,000 186,000 186,000 186,000 186,000 186,000 186,000 186,000 c ND 160 PVC m 28,000 45 1,260,000 31,000 45 1,395,000 - 180,000 180,000 180,000 180,000 180,000 180,000 180,000 139,500 139,500 139,500 139,500 139,500 139,500 139,500 139,500 139,500 139,500 - ii Section valves - a ND 75 Gate nos. 450 200 90,000 490 200 98,000 - 12,857 12,857 12,857 12,857 12,857 12,857 12,857 9,800 9,800 9,800 9,800 9,800 9,800 9,800 9,800 9,800 9,800 b ND 100 Gate nos. 560 250 140,000 620 250 155,000 - 20,000 20,000 20,000 20,000 20,000 20,000 20,000 15,500 15,500 15,500 15,500 15,500 15,500 15,500 15,500 15,500 15,500 c ND 150 Gate nos. 280 450 126,000 310 450 139,500 - 18,000 18,000 18,000 18,000 18,000 18,000 18,000 13,950 13,950 13,950 13,950 13,950 13,950 13,950 13,950 13,950 13,950 - iii Fire hydrants - a ND 80 nos. 168 200 33,600 186 200 37,200 - 4,800 4,800 4,800 4,800 4,800 4,800 4,800 3,720 3,720 3,720 3,720 3,720 3,720 3,720 3,720 3,720 3,720 - iv Service connections - a ND 15 nos. 9,392 150 1,408,725 10,381 150 1,557,200 - 201,246 201,246 201,246 201,246 201,246 201,246 201,246 155,720 155,720 155,720 155,720 155,720 155,720 155,720 155,720 155,720 155,720 b ND 25 nos. 1,878 250 469,575 2,076 250 519,067 - 67,082 67,082 67,082 67,082 67,082 67,082 67,082 51,907 51,907 51,907 51,907 51,907 51,907 51,907 51,907 51,907 51,907 - v Service water meters - a Domestic (ND 15) nos. 9,392 150 1,408,725 10,381 150 1,557,200 - 201,246 201,246 201,246 201,246 201,246 201,246 201,246 155,720 155,720 155,720 155,720 155,720 155,720 155,720 155,720 155,720 155,720 b Non-Domestic (ND 25) nos. 1,878 200 375,660 2,076 200 415,253 - 53,666 53,666 53,666 53,666 53,666 53,666 53,666 41,525 41,525 41,525 41,525 41,525 41,525 41,525 41,525 41,525 41,525 - C.5 Other new bulk water management facilities 280,000 - - - - - 140,000 140,000 - - - - - - - - - - - - i Automatic Control System for pumps and reservoirs Station 10 25,000 250,000 - 125,000 125,000 - - - ii Water quality monitoring equipment Sum 1 30,000 30,000 - 15,000 15,000 - - - - D. SEWERAGE SERVICE IMPROVEMENTS 2,282,913 1,660,376 - - - - 1,141,457 1,141,457 - - - - - - - 830,188 830,188 - - - - D.1 Decommissioning of Sewage Treatment Works 1,130,250 - - - - - 565,125 565,125 - - - - - - - - - - - - i RUWA Adelaide Stabilisation Pond - a Dewatering and drying out Sum 1 50,000 50,000 4,000 - - 25,000 25,000 - - b Sludge excavation and removal m3 15,741 50 787,050 4,500 - - 393,525 393,525 - - c Dozing of walls and lanscaping level m3 28,320 10 283,200 2,000 - - 141,600 141,600 - - d Demolition of unused structures nos 2 5,000 10,000 25,000 - - 5,000 5,000 - - - - - D.2 Decommissioning of Sewage Pump Stations (Retain Screening Facilities) 218,800 - - - - - 109,400 109,400 - - - - - - - - - - - - i Renyaro SPS - a Grade and Gravel Access Road m 50 80 4,000 4,000 - - 2,000 2,000 - - b New Site Fencing (Clearvu) m 142 150 21,300 4,500 - - 10,650 10,650 - - c New Gate No. 1 4,500 4,500 2,000 - - 2,250 2,250 - - d Demolition of unused structures nos 2 5,000 10,000 25,000 - - 5,000 5,000 - - e Landscaping and grassing or gravelling nos 1,050 15 15,750 3,500 - - 7,875 7,875 - - f Removal of contaminated material to spoil nos 210 50 10,500 4,500 - - 5,250 5,250 - - g Construction of skip hardstanding for rakings m2 24 150 3,600 9,000 - - 1,800 1,800 - - - - - - - ii Chilemba SPS - a Grade and Gravel Access Road m 85 80 6,800 4,000 - - 3,400 3,400 - - b New Site Fencing (Clearvu) m 184 150 27,600 4,500 - - 13,800 13,800 - - c New Gate No. 1 4,500 4,500 2,000 - - 2,250 2,250 - - d Demolition of unused structures nos 2 5,000 10,000 25,000 - - 5,000 5,000 - - e Landscaping and grassing or gravelling nos 2,091 15 31,365 3,500 - - 15,683 15,683 - - f Removal of contaminated material to spoil nos 418 50 20,910 4,500 - - 10,455 10,455 - - g Construction of skip hardstanding for rakings m2 24 150 3,600 9,000 - - 1,800 1,800 - - - iii Ruwa Terminal SPS - a Grade and Gravel Access Road m - 80 - 4,000 - - - - - - b Repairs and painting to site walling m 240 75 18,000 4,500 - - 9,000 9,000 - - c New Gate No. 1 4,500 4,500 2,000 - - 2,250 2,250 - - d Demolition of unused structures nos - 5,000 - 25,000 - - - - - - e Landscaping and grassing or gravelling nos 875 15 13,125 3,500 - - 6,563 6,563 - - f Removal of contaminated material to spoil nos 175 50 8,750 4,500 - - 4,375 4,375 - - g Construction of skip hardstanding for rakings m2 - 150 - 9,000 - - - - - - - - - D.3 Rehabilitation/replacement of existing sewer network 933,863 1,660,376 - - - - 466,932 466,932 - - - - - - - 830,188 830,188 - - - i Sewer reticulation pipes in some areas - a ND 150 PVC m 5,328 75 399,637 10,657 75 799,275 - 199,819 199,819 399,637 399,637 b ND 200 PVC (OD 225) m 256 75 19,200 512 75 38,401 - 9,600 9,600 19,200 19,200 c ND 250 PVC (OD 280) m 1,820 90 163,786 3,640 90 327,572 - 81,893 81,893 163,786 163,786 D:\Projects\Zimbabwe\InvestmentPlans\WorldBank_GHWSIP_Project\CostEstimates\RealCostEstimates_No Inflation\Investment Programme - RUWA_Real140522.xlsx 2 of 4 Long Term Projects Medium Term Projects Greater Harare Water and Sanitatation Investment Plan FS/FD Construction FS/FD Construction Appendix 9-5: Detailed Investment Cost Estimates - RUWA Item Unit Medium Term (upto 2020) Long Term (upto 2030) 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Qty Rate [USD] Amount Qty Rate [USD] Amount [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] d ND 315 PVC m 205 120 24,547 409 120 49,094 - 12,273 12,273 24,547 24,547 e ND 400 PVC m 290 165 47,878 580 165 95,757 - 23,939 23,939 47,878 47,878 f ND 450 PVC m 76 190 14,454 152 190 28,908 - 7,227 7,227 14,454 14,454 g Construction of manholes nos. 23 2,500 57,010 46 2,500 114,020 - 28,505 28,505 57,010 57,010 h Rehabilitation of Manhole cover and frame nos. 319 350 111,650 319 350 111,650 - 55,825 55,825 55,825 55,825 i New Manhole Covers only nos. 638 150 95,700 638 150 95,700 - 47,850 47,850 47,850 47,850 - - - E. EXTENSION OF SEWERAGE SERVICES 24,957,743 16,107,641 - 0 1,501,743 1,501,743 1,501,743 8,724,513 8,724,513 1,501,743 1,501,743 1,130,420 1,130,420 1,130,420 1,130,420 1,130,420 3,532,140 3,532,140 1,130,420 1,130,420 1,130,420 E.1 Ruwa Northern Expansion 2,510,623 712,000 - - - - 1,255,311 1,255,311 - - - - - - - 356,000 356,000 - - - a ND 150 PVC m 36 - - 36 - - - - - - b ND 200 PVC (OD 225) m 44 - - 44 - - - - - - c ND 250 PVC (OD 280) m 57 - - 57 - - - - - - d ND 315 PVC m 175 80 13,993 - 80 - - 6,996 6,996 - - e ND 400 PVC m 111 - - 111 - - - - - - f ND 450 PVC m 146 - - 146 - - - - - - g ND 525 Concrete m 650.00 375 243,750 1,780 375 667,500 - 121,875 121,875 333,750 333,750 h ND 600 Concrete m 342 - 342 - - - - - - i ND 675 Concrete m 215.00 524 112,660 524 - - 56,330 56,330 - - j ND 750 Concrete m 3,165 643 2,035,095 643 - - 1,017,548 1,017,548 - - k Construction of manholes nos. 42 2,500 105,125 18 2,500 44,500 - 52,563 52,563 22,250 22,250 - - - - E.2 Ruwa Southern and Ward 4 Expansion 627,529 212,640 - - - - 313,765 313,765 - - - - - - - 106,320 106,320 - - - a ND 150 PVC m 36 - 36 - - - - - - b ND 200 PVC (OD 225) m 44 - 3,075 44 135,765 - - - 67,883 67,883 c ND 250 PVC (OD 280) m 50 57 2,849 57 - - 1,425 1,425 - - d ND 315 PVC m 1,230 80 98,348 80 - - 49,174 49,174 - - e ND 400 PVC m 3,645 111 403,207 111 - - 201,604 201,604 - - f Construction of manholes nos. 49 2,500 123,125 31 2,500 76,875 - 61,563 61,563 38,438 38,438 E.3 Ruwa Eastern Expansion - 445,630 - - - - - - - - - - - - - 222,815 222,815 - - - a ND 150 PVC m 36 - 36 - - - - - - b ND 200 PVC (OD 225) m 44 - 4,500 44 198,681 - - - 99,341 99,341 c ND 250 PVC (OD 280) m 57 - 1,640 57 93,449 - - - 46,725 46,725 d Construction of manholes nos. - 2,500 - 61 2,500 153,500 - - - 76,750 76,750 E.4 New Ruwa WWTW Ponds and Lift Pump Station 11,307,387 165,000 - - - - 5,653,693 5,653,693 - - - - - - - 82,500 82,500 - - - i Pump station from south of Ruwa to head of ponds - - - - a Sewage Pumps 600m3/hr @15 No. 3 49,000 147,000 3 55,000 165,000 - 73,500 73,500 82,500 82,500 c Booster Pump Suction and Discharge Ppipework No. 3 8,000 24,000 - 6,000 - - 12,000 12,000 - - d Booster Pump Station Building m2 60 1,200 72,000 - 1,200 - - 36,000 36,000 - - e Booster Pump Station Ancilliaries Sum 1 10,000 10,000 - 10,000 - - 5,000 5,000 - - - - - - - ii Force Main 1000m ND500 GRP m 1,200 276 330,720 260 - - 165,360 165,360 - - - - - - - Civil Works in Pond Construction 9MLD Stream Stream 2 3,144,667 6,289,333 - 6,289,333 - - 3,144,667 3,144,667 - - Pond System Pipework Stream 2 530,000 1,060,000 - 1,060,000 - - 530,000 530,000 - - Inlet Works Stream 2 88,333 176,667 - 176,667 - - 88,333 88,333 - - Ancilliary Buildings Stream 2 671,333 1,342,667 - 1,342,667 - - 671,333 671,333 - - - - - - - iv Wastewater Slow Rate (irrigation) disposal system - - - - - Irrigation Set Up Ha 250 4,770 1,192,500 - 4,770 - - 596,250 596,250 - - Irrigation Pumps and Equipment Ha 250 2,650 662,500 - 2,650 - - 331,250 331,250 - - - - - - - E.5 Ruwa Outfall to Lyndhurst Farm / HSTS - 3,268,169 - - - - - - - - - - - - - 1,634,084 1,634,084 - - - a ND 825 Concrete m 693 - 4,550 693 3,154,419 - - - 1,577,209 1,577,209 b Construction of manholes nos. 2,500 - 46 2,500 113,750 - - - 56,875 56,875 - E.6 Extension of sewer reticulation system in new development areas 10,512,204 11,304,202 - 1,501,743 1,501,743 1,501,743 1,501,743 1,501,743 1,501,743 1,501,743 1,130,420 1,130,420 1,130,420 1,130,420 1,130,420 1,130,420 1,130,420 1,130,420 1,130,420 1,130,420 i pipes - a ND 100 PVC m 60,823 27 1,642,226 65,405 27 1,765,930 - 234,604 234,604 234,604 234,604 234,604 234,604 234,604 176,593 176,593 176,593 176,593 176,593 176,593 176,593 176,593 176,593 176,593 b ND 160 PVC m 25,343 36 912,348 27,252 36 981,072 - 130,335 130,335 130,335 130,335 130,335 130,335 130,335 98,107 98,107 98,107 98,107 98,107 98,107 98,107 98,107 98,107 98,107 ii Construction of manholes nos. 1,723 2,500 4,308,310 1,853 2,500 4,632,840 - 615,473 615,473 615,473 615,473 615,473 615,473 615,473 463,284 463,284 463,284 463,284 463,284 463,284 463,284 463,284 463,284 463,284 - iii Sewer service connections - i ND 100 nos. 10,137 360 3,649,320 10,901 360 3,924,360 - 521,331 521,331 521,331 521,331 521,331 521,331 521,331 392,436 392,436 392,436 392,436 392,436 392,436 392,436 392,436 392,436 392,436 - F. ACCOMPANYING MEASURES 6,823,689 5,025,814 - 264,207 744,207 384,207 2,877,127 2,025,527 264,207 264,207 226,647 226,647 226,647 416,647 226,647 1,481,731 1,481,731 246,372 246,372 246,372 - F.1 Technical operations management 430,000 - - - - 430,000 - - - - - - - - - - - - - i Establishment of meter control, testing and repair workshop Sum 1 50,000 50,000 - 50,000 ii Procurement of tools and equipment for operations and maintenance Sum 1 200,000 200,000 - 200,000 iii Provision of vehicles for operation and maintenance teams Sum 1 150,000 150,000 - 150,000 iv Provision of vacuum tanker for septic tank emptying no.s 1 30,000 30,000 - 30,000 - F.2 Information Communication Technology Infrastructure 176,600 - - - - 176,600 - - - - - - - - - - - - - ii Supply of server nos 1 5,500 5,500 - 5,500 iii Supply and install Local Area Networking Sum 2 5,000 10,000 - 10,000 iv Supply and install Wide Area Networking Satelite 2 5,000 10,000 - 10,000 v Supply and install generator power back-up nos 2 3,000 6,000 - 6,000 vi Supply personal computers complete with software, UPS, etc. nos 10 2,000 20,000 - 20,000 vii Supply laptop computers nos 4 2,500 10,000 - 10,000 viii Supply heavy duty printer (dot-matrix) nos 3 4,500 13,500 - 13,500 ix Supply laser printers nos 4 400 1,600 - 1,600 x Supply and if appropraiate install auxiliary equipment Sum 1 100,000 100,000 - 100,000 - F.3 Commercial operations management 350,000 - - - 350,000 - - - - - - - - - - - - - - i Review/Improvement of billing and commercial operations (consultancy) Sum 1 200,000 200,000 - 200,000 ii Socio-economic surveys and customer awareness campaigns Sum 1 150,000 150,000 - 150,000 - F.4 Management, commercial and technical information systems 83,000 - - - - 83,000 - - - - - - - - - - - - - i Procurement and installation of billing and customer services software Sum 1 20,000 20,000 - 20,000 ii Procurement and installation of management information software Sum 1 15,000 15,000 - 15,000 iii Procurement of commercial operations software (various) Sum 1 10,000 10,000 - 10,000 iv Procurement and installation of accounting and payroll software Sum 1 8,000 8,000 - 8,000 iiv Procurement and installation of GIS based Network Information Systems software Sum 1 10,000 10,000 - 10,000 D:\Projects\Zimbabwe\InvestmentPlans\WorldBank_GHWSIP_Project\CostEstimates\RealCostEstimates_No Inflation\Investment Programme - RUWA_Real140522.xlsx 3 of 4 Long Term Projects Medium Term Projects Greater Harare Water and Sanitatation Investment Plan FS/FD Construction FS/FD Construction Appendix 9-5: Detailed Investment Cost Estimates - RUWA Item Unit Medium Term (upto 2020) Long Term (upto 2030) 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Qty Rate [USD] Amount Qty Rate [USD] Amount [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] [USD] iiiv Procurement and installation of other software (asset management, hyrauli modelling etc) Sum 1 20,000 20,000 - 20,000 - F.5 Professional services - Institutional Support 1,268,000 - - - 480,000 120,000 240,000 428,000 - - - - - - - - - - - - i Advice, guidance and support in the development of institutional frameworks towards an autonomous utility Month 42 20,000 840,000 - - 240,000 120,000 240,000 240,000 ii Assessment of capacity, competency and development of a comprehesive training program Month 18 20,000 360,000 - 240,000 120,000 iii Specific training courses (various) nos 136 500 68,000 - 68,000 - F.6 Professional services - Feasibility, Design and Supervision 4,516,089 5,025,814 - 264,207 264,207 264,207 1,597,527 1,597,527 264,207 264,207 226,647 226,647 226,647 416,647 226,647 1,481,731 1,481,731 246,372 246,372 246,372 iv Engineering Services Sum 4,516,089 5,025,814 - 264,207 264,207 264,207 1,597,527 1,597,527 264,207 264,207 226,647 226,647 226,647 416,647 226,647 1,481,731 1,481,731 246,372 246,372 246,372 Contingency 924,724 924,724 924,724 5,591,345 5,591,345 924,724 924,724 793,266 793,266 793,266 1,458,266 793,266 5,186,057 5,186,057 862,302 862,302 862,302 Total 3,831,001 4,311,001 3,951,001 24,443,743 23,592,143 3,831,001 3,831,001 3,286,388 3,286,388 3,286,388 6,041,388 3,286,388 21,485,095 21,485,095 3,572,393 3,572,393 3,572,393 Cum. Total 3,831,001 8,142,003 12,093,004 36,536,747 60,128,889 63,959,891 67,790,892 71,077,280 74,363,667 77,650,055 83,691,443 86,977,831 108,462,926 129,948,021 133,520,415 137,092,808 140,665,201 Engineering Services 10% of physical works (A+B+C+D+E) Contractor's P&G and Physical contingencies 35% of physical works (A+B+C+D+E) Inflation 0% D:\Projects\Zimbabwe\InvestmentPlans\WorldBank_GHWSIP_Project\CostEstimates\RealCostEstimates_No Inflation\Investment Programme - RUWA_Real140522.xlsx 4 of 4 Greater Harare Water and Sanitation Strategic Plan Investment Plan Report Greater Harare Water and Sanitation Investment Plan APPENDIX 11: FINANCIAL ANALYSIS Gauff Ingenieure Greater Harare Water and Sanitation Strategic Plan Investment Plan Report Greater Harare Water and Sanitation Investment Plan APPENDIX 11: DETAILED FINANCIAL ANALYSIS TABLES Gauff Ingenieure Greater Harare Water and Sanitation Investment Plan Investment Plan Report Appendix 11 GREATER HARARE WATER AND SANITATION INVESTMENT PLAN INVESTMENT PLAN REPORT APPENDIX 11 Contents 1 DETAILED NOTES TO THE FINANCIAL MODEL .................................................................................. 1 1.1 INTRODUCTION..................................................................................................................................... 1 1.2 DETAILED STAFF NUMBER AND EMPLOYMENT COSTS ............................................................................ 2 1.3 DETAILED (MAIN) COST CALCULATIONS ................................................................................................ 3 1.3.1 Bulk Tariff Calculations .............................................................................................................. 5 1.3.2 Retail Tariff Calculations ............................................................................................................ 6 1.3.3 Unit Chemical and Power Cost calculations .............................................................................. 7 1.4 DETAILED REVENUE CALCULATIONS ..................................................................................................... 8 1.5 FINANCIAL ANALYSIS CALCULATIONS .................................................................................................... 9 Financial Analysis Tables (Costs, Revenue, Financial Statements) GREATER HARARE (4 Pages) HARARE (4 Pages) CHITUNGWIZA (4 Pages) EPWORTH (4 Pages) NORTON (4 Pages) RUWA (4 Pages) Gauff Ingenieure I Greater Harare Water and Sanitation Investment Plan Investment Plan Report Appendix 11 1 DETAILED NOTES TO THE FINANCIAL MODEL 1.1 Introduction Appendix 11 at hand contains the relevant detailed tables of the financial analysis comprising of: • Personnel cost forecasts detailing the number of staff by individual salary scale, the commensurate salary scale, proportions used to calculate estimates for allowances, pension, bonus etc. to arrive at an annual employment cost figure taken up in the detailed cost tables; • Costs of various nature are calculated and presented in this detailed cost table divided into the following categories of costs identified: o Capital costs: investment disbursements, repayment of loan, balance on loan, interest calculations on loan (reducing balance) and depreciation; o Variable operating costs: Bulk water costs (if appropriate, i.e. bought in by the entity), abstraction, power and abstraction costs (if appropriate, i.e. if entity produces water); o Fixed operating costs: Personnel, transport and other administration costs (based on personnel); o Maintenance costs for both existing and investment assets. o Estimated bulk and retail cost covering water/sewerage tariffs are calculated below the main cost table providing a guideline for input and use in the financial model. o Unit cost calculations for chemicals and power are provided below the unit cost calculations for tariffs. • Revenue calculations based on volumes of water sold either in bulk (before NRW) and retail (after NRW), tariff and collection efficiency are presented in this table forming the main source of income and cash collection used in the financial model. • Financial Analysis encompasses three inter-linked tables: Income Statement, Cash Flow and Balance Sheet that draw relevant input data from various source tables of the financial model as described above and also below. In addition the financial model includes tables, which are however not presented in this annex as they are already presented in other parts of this report. These tables are: • Existing assets table listing all facilities already in existence capturing the year of construction, the construction cost (using base year cost estimates), breakdown into three category elements (civil works, pipework and mechanical and electrical) assumed economic life of each facility, straight line depreciation, maintenance and the depreciated residual cost (DRC). In the case of the combined investments for Greater Harare this spreadsheet collects the data from the individual satellite towns and sums them up for further use in other tables; • Investment Assets table represents a transfer table obtained from the main investment plan used to break down the anticipated disbursements into the different financing sources as presented in the main text (Chapter 11). Apart from this, the Gauff Ingenieure 1 Greater Harare Water and Sanitation Investment Plan Investment Plan Report Appendix 11 calculation sheet also estimates the depreciated residual costs. As with the existing assets spreadsheet, the investment assets sheet in the case of Greater Harare is used to collect the individual information from the satellite towns and used to sum these up before they are used elsewhere in the model; • Pumping details include information on the pumping volumes (Q), head (h) and time (hr) required to establish a wieghte4d average for Q and h used as an input in the calculation of unit power cost calculations in the main cost tables; • Dashboard output both in form of various tabulations: performance data (billing and collection efficiencies and staffing ratios), Income and Cash Flow statement outputs including typical Profitability measures (gross and profit margins), Costs and Volumes that are selectively expressed in graphical form used in the main text (Chapter 11) • (Other) Result tables combining the main performance and profitability measures as well as a separate spreadsheet attempting to highlight the effect of the existing loan (Exim Bank). The latter part of the financial model is accessible and available from the soft copy of the model. For ease of understanding the data and following the calculations the relevant tables have been formatted as tables using the available table tool and where appropriate annotated with explanatory notes referenced in square brackets as presented in the following sections. To improve on data visibility and distinguish between data input, milestones and calculated figures, different fonts have been applied as per the following legend: Sample Interpretation 230,021 = data input 235,024 = milestone/key data 230,021 = calculated figures Figures in italics indicate input fields while figures in normal font (i.e. not italic) are calculated. Headings as well as sub-total and totals are indicated in bold. 1.2 Detailed Staff Number and Employment Costs The datasheet labelled “HR” contains all relevant information required to establish annual employment costs over the entire project period considering changes in staff numbers, remuneration (if required) and allocation of costs to take cognisance of currently applied recharges for costs including staff deployed over more than one department at the current council setup. The top part of the table deals with the staffing numbers broken down into twelve grades. This is a simplified form based on staffing categories in other cities and large towns in Zimbabwe (e.g. Mutare). For purposes of the investment plan a 12-grade breakdown of staff was deemed adequate, although detailed organisation development studies to guide the transformation of the entity into an autonomous utility will need to be more detailed. The salary scales are based on the same 12-grade breakdown of staff. In the absence of information from Harare Water, the salary scales were based on remuneration levels obtained from Chegutu and compared with other cities and large towns in Zimbabwe. In Gauff Ingenieure 2 Greater Harare Water and Sanitation Investment Plan Investment Plan Report Appendix 11 consideration of higher costs of living in and directly around the capital, the salary scales were adjusted upward by 10 %. Although the model has provisions for an annual increase of salaries, this was set to nil in view of the financial forecasts were being made in real terms. After establishing the monthly salary for a particular year, provisions are made in the model to add: • Allowances (including overtime); • Pensions (i.e. contribution to pension funds by the employer); • Bonuses (e.g. end of year bonus and other gratuities). It was noted that the number of staff in the establishment differs to the actual staff numbers employed (in-post) as characterised and confirmed by the number of vacancies reported. Thus, if the payroll forecast is based on the establishment, the calculations will be an over- statement. Furthermore, it was also noted that some staff deployed for water and sewerage activities are also active in other departments of the council at present. In terms of the council’s accounting, such sharing of resources is differentiated and reflected as recharges in their accounting. To include these findings into the calculations of the financial model a line labelled “Apportionment to WSS only” was introduced. Below this item the model offers an option to include and consider the cost of casual staff. The total annual employment cost calculated for each year of the project horizon is carried forward to the main cost sheet and then onto other analysis tables of the financial model relating to fixed costs. In line with the anticipated organisational transformation from the current set-up to a more autonomous department by 2015 (similar to that found for Harare Water) and ultimately an independent utility by 2018 the input of staff numbers is intended for 2013 (base year – current) and two milestone years; 2015 and 2018 as marked and highlighted appropriately in the model and sheets presented under this appendix. 1.3 Detailed (Main) Cost Calculations The detailed cost calculation table, also referred to the main cost tables, includes all types of costs identified and quantified for purposes of the financial analysis forecasts. They do not necessarily follow the order of the financial analysis, but provides a comprehensive and detailed table used as a source of calculated and summarised figures required for the financial analysis. To support the figures with explanations on assumptions and calculation methods the following table provides the notes referenced in the main cost table. Table 1-1: Referenced Explanation Notes for Cost Tables Ref Notes [1] Water demand as detailed in Chapter 5 was projected for 2013, 2020 and 2030 representing three milestones. The periods between these were interpolated on a linear basis to fit the demand of the milestones provided to obtain year-on-year demand. The resulting figures were input into the financial model. In the case for Harare and Greater Harare models the average demand included for Ruwa is reduced by the capacity of Ruwa’s production which does and will not need to be produced by Harare. [2] The peak seasonal factor and peak demand are calculated as a function of average demand and used to ascertain the production surplus/ (deficit) only. [3) Production losses attributable to backwash, flushing and other cleaning operations are assumed to increase the abstraction of raw water. [4] The water produced is the volume of water after production losses equal to either the Gauff Ingenieure 3 Greater Harare Water and Sanitation Investment Plan Investment Plan Report Appendix 11 Ref Notes demand or the production capacity, whichever lower. [5] The proportion of bulk water available may be less than 100 % in the event that bulk water supply is practically throttled or cannot be produced to fully cover the demand for bulk water. [6] In the event that bulk water is required either because the entity does not possess its own treatment works or the entity is unable to produce adequate water to cover average demand, this would be bought (from Harare). Thus, Ruwa expects to satisfy the demand of water through a combination of own water produced and bulk water from Harare, while the other satellite towns solely rely on bulk water supplies from Harare. The model prioritises own production and covers the balance of the demand with bulk water if and as available. The “if” switch is required for the event that demand cannot be covered and bulk water is not available, e.g. Harare’s current situation. [7] The volume of water available is the addition of water produced plus water bought in bulk (if any). [8] Details on funding of investments are provided in a separate table (Invest assets) that distinguishes between the following types of funding: • Grant – no repayment of principal or interest payments expected; • Concessionary loan for which the principal is expected to be paid but no interest, i.e. nil-interest loan; • Loan for which both principal and interest payments are expected depending on repayment periods and interest rate respectively. [9] The depreciation of existing assets is based on the estimated replacement value and assumed and agreed economic life of assets related to civil works, pipework and mechanical and electrical. However, in view of the financial performance reported by Harare Water for recent years it is not realistic to bring these calculated costs to account since they cannot be afforded. Thus, the calculated depreciation for existing assets was set to nil. Nonetheless, the model allows for a percentage of the calculated depreciation costs to be brought on board if required at a later stage to ascertain the financial impact thereof. This adjustment is possible under the column headed “Notes value”. [10] For new capital investments, the depreciation was similarly calculated on the basis of their estimated cost and anticipated economic life. As with existing assets, the full annual value of depreciation of these assets is high and realistically not a priority and was therefore revised downward to a level representing expected levels of re-investment by the entity. [11] The assumed unit cost of water is brought forward from the bulk tariff calculations below the main cost table. In the case of Harare, the bulk rate applied Is that currently applied by the entity rather than the actual calculated bulk rate worked out. [12] From the management accounts reviewed it was not clear if any abstraction costs were/are paid. To gradually introduce this cost a percentage of the ideal costs is entered in this line. [13] The assumed unit power cost for power is brought forward from the calculations below the retail tariff calculations under the “Costs” tab, based on: • Average weighted volumes pumped (Q) and head (h); • Unit cost of power (per KWh); • Pump efficiency. [14] Unit chemical costs are brought forward from the main cost tables, which bear in mind: • Dosing and unit price (per kg) for aluminium sulphate; • Ditto for lime; and • Ditto for chlorine (conversion from gas to weight units if necessary) The model considers two water sources and associated qualities (surface and borehole), though only one is applied for this project. Gauff Ingenieure 4 Greater Harare Water and Sanitation Investment Plan Investment Plan Report Appendix 11 Ref Notes [15] Separately calculated employment costs are based on: • Number of staff; • Remuneration (salaries scales); • % allowances (to cater for e.g. overtime); • % pension; and • % bonuses (and other gratuities); • Allocation to WSS only to cater for vacancies and resale accounting; • Casual wages (if any). [16] Transport costs are derived from: • Number of units (distinguished between vehicles, motorcycles and heavy vehicles/machinery); • Average distance travelled (km/yr); • Average fuel consumption (l/100 km); and • Average fuel cost, which may be subject to inflation if desired – not in this case as costs treated in real terms. [17] Other administration costs calculated on the basis of a portion of employment costs are deemed to cover: • Office stationery; • Office utilities (communication, power, water); • Security (if outsourced); • Insurance (for office, vehicles and other e.g. public liability); • Professional services (including external audit); [18] Maintenance costs calculated separately on the basis of asset values (both existing and investment) are adjusted to gradually adopt realistic levels from currently too low levels, as affordability and financial performance of the entity improves. Below the main cost tables are a series of other related detailed calculations for bulk tariff estimation, retail tariff estimation, power and chemical unit cost calculations, though not presented in this annex, described in further detail in the following sub-sections. 1.3.1 Bulk Tariff Calculations The sale and hence responsibility of water losses are assumed to take place shortly after the water treatment works, or along main transmission lines which are deemed to have negligible water losses before the bulk meter. Therefore, the elements considered in the calculation of (theoretical) bulk water costs are: • Abstraction costs (payable to ZINWA); • Power costs used for pumping both raw and clean water at least up to the bulk meter or storage tank(s), whichever further; • Chemical costs for both treatment (aluminium sulphate flocculants and lime for pH correction) and disinfection (chlorine); • Treatment losses incurred during water treatment; • Proportion of financial costs (including depreciation and capital charges) assumed at 25 % to cater for approximate financial costs relating to production of water only (i.e. excluding distribution network apart from trunk mains). Gauff Ingenieure 5 Greater Harare Water and Sanitation Investment Plan Investment Plan Report Appendix 11 • Proportion of fixed costs (employment, transport and administration costs) set at an assumed level of 25 % to cover for costs related to water production and transmission main only. • Proportion of maintenance costs for both existing and investment assets assumed to be 30 % of total recognised maintenance costs deemed to represent the portion for water treatment and mainline transmission (up to and including the bulk meter(. The unit cost calculated for bulk water relates to the volumes produced as opposed to the volumes sold at the consumer meter. The resulting bulk water cost calculations are presented in the following table. Table 1-2: Bulk Water Cost Calculations Average Unit Bulk Cost Calculation ASSUMPTION/ NOTE UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 NOTE VALUE 3 Assumed unit abstraction cost USD/m 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 Assumed unit power cost USD/m3 0.070139 0.070139 0.070139 0.070139 0.070139 0.070139 0.070139 0.08125 0.08125 Assumed unit chemical cost USD/m3 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 Proportion of Financial costs 25% USD/m3 - 0.0003 0.0006 0.0008 0.0055 0.0096 0.0131 0.0179 0.0221 Proportion of fixed costs 25% USD/m3 0.0428 0.0464 0.0349 0.0397 0.0401 0.0457 0.0471 0.0477 0.0465 Proportion of Maintenance costs 30% USD/m3 0.0044 0.0049 0.0059 0.0060 0.0088 0.0120 0.0156 0.0222 0.0287 Sub-total unit cost for water Average 0.25 USD/m3 0.23 0.23 0.22 0.23 0.24 0.25 0.26 0.28 0.29 Average Unit Bulk Cost Calculation ASSUMPTION/ NOTE UNIT 2022 2023 2024 2025 2026 2027 2028 2029 2030 NOTE VALUE 3 Annual chemical cost USD/m 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 3 Transport USD/m 0.08125 0.08125 0.08125 0.08125 0.08125 0.08125 0.08125 0.08125 0.08125 3 Average consumption per 100 km USD/m 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 3 Proportion of Financial costs 25% USD/m 0.0227 0.0235 0.0230 0.0221 0.0273 0.0320 0.0338 0.0321 0.0306 3 Proportion of fixed costs 25% USD/m 0.0454 0.0444 0.0434 0.0424 0.0415 0.0406 0.0398 0.0390 0.0382 3 Proportion of Maintenance costs 30% USD/m 0.0285 0.0283 0.0283 0.0284 0.0237 0.0250 0.0253 0.0253 0.0250 3 Sub-total unit cost for water Average 29% USD/m 0.29 0.29 0.29 0.29 0.29 0.29 0.29 0.29 0.29 From the above table the average calculated cost of producing bulk water over the project period is USD 0.27. However, based on the current levels charged by Harare Water, a constant USD 0.40 was applied throughout the project’s evaluation period. 1.3.2 Retail Tariff Calculations The principle of calculating the retail unit cost and hence cost covering tariff is based on the same principles as that used for bulk water. The main difference is a) that it also includes bulk water costs as detailed in the previous section and b) the unit cost considers the volume of water after water losses (NRW). It furthermore, also makes an attempt to consider financial losses (debtors) based on assumed collection efficiencies. Similar to bulk water costs, the calculations re provided and presented below, but the actual tariff applied is based on the current actual average tariff. Thus the following retail cost calculations are used as a guideline and should be a target for the utility to achieve. It is the basis of adopting a reducing tariff made possible as water and financial losses are gradually reduced in response to reforms and investments. Gauff Ingenieure 6 Greater Harare Water and Sanitation Investment Plan Investment Plan Report Appendix 11 Table 1-3: Retail Cost Covering Tariff Calculations Average Unit Retail Cost Calculation ASSUMPTION/ NOTE REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 NOTE VALUE Assumed unit cost for bulk water USD/m3 - - - - - - - - - Assumed unit abstraction cost USD/m3 0.0600 0.0600 0.0600 0.0600 0.0600 0.0600 0.0600 0.0600 0.0600 Assumed unit power cost USD/m3 0.0701 0.0701 0.0701 0.0701 0.0701 0.0701 0.0701 0.0812 0.0812 Assumed unit chemical cost USD/m3 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 3 Proportion of Financial costs 60% USD/m - 0.0016 0.0033 0.0041 0.0268 0.0443 0.0574 0.0757 0.0936 Proportion of fixed costs 60% USD/m3 0.2770 0.2776 0.1895 0.2029 0.1947 0.2122 0.2071 0.2022 0.1973 Proportion of Maintenance costs 60% USD/m3 0.0235 0.0243 0.0266 0.0255 0.0356 0.0465 0.0572 0.0786 0.1015 Sub-total unit cost for water Average 0.48 USD/m3 0.48 0.49 0.40 0.41 0.44 0.49 0.50 0.55 0.59 Adjustment for collection losses USD/m3 0.28 0.24 0.16 0.12 0.09 0.07 0.05 0.03 0.03 3 Total average cost covering water tariff USD/m 0.77 0.73 0.56 0.54 0.53 0.56 0.55 0.58 0.61 Total average cost covering W&S tariff USD/m3 1.09 1.03 0.77 0.74 0.73 0.79 0.79 0.83 0.89 Calculated sewerage charges % 0.32 0.30 0.21 0.20 0.20 0.23 0.24 0.25 0.28 Calculated proportion of sewerage of Water 42% 41% 38% 37% 38% 41% 44% 43% 46% Water tariff used in Fin Model 0% 1.45 1.35 1.20 1.15 1.15 1.15 1.15 1.15 1.10 Average Unit Retail Cost Calculation ASSUMPTION/ NOTE REF UNIT 2022 2023 2024 2025 2026 2027 2028 2029 2030 NOTE VALUE 3 Number of vehicles USD/m - - - - - - - - - Number of Motor cycles USD/m3 0.0600 0.0600 0.0600 0.0600 0.0600 0.0600 0.0600 0.0600 0.0600 3 Annual average distance by truck USD/m 0.0812 0.0812 0.0812 0.0812 0.0812 0.0812 0.0812 0.0812 0.0812 Annual vehicle operating cost USD/m3 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 Proportion of Financial costs 60% USD/m3 0.0964 0.0999 0.0966 0.0913 0.1114 0.1291 0.1345 0.1261 0.1187 Proportion of fixed costs 60% USD/m3 0.1927 0.1885 0.1817 0.1754 0.1694 0.1637 0.1583 0.1531 0.1482 3 Proportion of Maintenance costs 60% USD/m 0.1007 0.1001 0.0989 0.0978 0.0808 0.0839 0.0841 0.0828 0.0809 3 Sub-total unit cost for water Average #VALUE! USD/m 0.58 0.58 0.57 0.56 0.55 0.57 0.57 0.56 0.54 Adjustment for collection losses USD/m3 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 Total average cost covering water tariff USD/m3 0.61 0.61 0.60 0.59 0.58 0.60 0.60 0.58 0.57 Total average cost covering W&S tariff USD/m3 0.88 0.88 0.86 0.84 0.84 0.86 0.86 0.84 0.81 Calculated sewerage charges % 0.27 0.27 0.26 0.25 0.26 0.26 0.26 0.26 0.24 Calculated proportion of sewerage of Water 44% 44% 43% 42% 45% 43% 43% 45% 42% Water tariff used in Fin Model 0% 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 The tariff actually applied and carried forward to the revenue calculation sheet of the financial model is high. This includes all fixed charges including sewerage, which at present is not charged on the basis of the volume of water consumed and billed. As mentioned in the foregoing, the average combined tariff (for water and sewerage) assumes to drop over time as efficiencies improve as expected. 1.3.3 Unit Chemical and Power Cost calculations As outlined in the explanatory notes in the foregoing, the unit chemical and power costs re build from first principles as shown in the following set of tables. Table 1-4: Unit Chemical Cost Calculations Chemicals UNIT The unit cost of chemicals Surface Borehole Chlorine USD/kg is calculated for two 4 4 scenarios, (a) for surface Dosing rate g/m3 5 5 water intakes and (b) Costs/m3 USD/m3 borehole abstraction and 0.02 0.02 Alum USD/kg the relevant cost is 0.4 Dosing rate g/m3 applied to the unit of water 70 Costs/m3 USD/m3 produced in the table 0.028 Lime USD/kg above. 0.65 Dosing rate g/m3 6 Costs/m3 USD/m3 0.0039 Total Unit Chemical Cost USD/m3 0.0519 0.0200 Gauff Ingenieure 7 Greater Harare Water and Sanitation Investment Plan Investment Plan Report Appendix 11 Table 1-5: Unit Power Cost Calculations Power UNIT Mit-Term Long-Term Volume m3/h For details on Q & h refer 3,513 4,633 Pumping head H to pumping tab 101 117 Pump efficiency % 0.72 0.72 KWh KW/h Both the midium and long 492.7958 752.8625 Power consumption KW/m3 term unit cost calculations 0.140278 0.1625 Cost/ KWh USD/KWh are linked to base year 0.5 0.5 Cost per m3 USD/m3 costs 2013 0.0701 0.0813 1.4 Detailed Revenue Calculations Revenues from the sale of water and sewerage are the sole receivables recognised and incorporated in the model and. They are derived from the calculated estimates of volumes sold and the average combined tariff applied. The tariff, as mentioned in the foregoing, is a single charge expressed in USD/m3 including all variable and fixed tariff elements, i.e. an overall (simplified) average tariff. A distinction is however made between the revenue from retail sales and bulk sales as the unit tariff rates are quite different. The top part of the revenue table deals with water volumes for both bulk sales and retail sales, whereby the former is considered without NRW and the latter (retail) tariff is applied after NRW forecasts. Although the revenue table is straight forward, relevant sections of the data is referenced with explanation notes on assumptions and calculation methods as provided for in the following table. Table 1-6: Referenced Explanation Notes for Revenue Tables Ref Notes [1] It is not anticipated that Harare will be able to fully cover water demand until investments are made and efficiencies related to water losses (NRW) have improved significantly. To reflect this condition and hence shortfall in potential revenue from bulk water, a proportion is applied to the bulk supply that translates to revenue for Harare. With time and the ability to produce more water/loose less to NRW, the proportion of bulk water to the satellite towns and hence revenue to Harare for supplying this increased bulk water will increase. [2] NRW is aligned to currently reported levels and deemed to improve with reforms and future investments, whereby milestone targets are set for 2020 and 2030. The periods between these milestones are interpolated in a linear fashion. [3] Volumes of water sold in bulk and excluding bulk is based on estimated volumes of bulk water sold before NRW. Retail water sold on the other hand is considered as volumes after NRW. The tariffs for bulk and retail are different, in part to reflect the difference between inclusion and exclusion of NRW. [4] While detailed bulk tariff calculations are provided below the main cost table, the current existing bulk tariff is applied throughout. [5] The combined tariff includes water, sewerage and any fixed charge component applied as an overall unit tariff. [6] The collection efficiency in the base year appears to be an outlier compared to previous years. Future collection efficiencies are based on significantly improved and agreed milestones. [7] A proportion of old debt (3-years old) is assumed to be collected through assumed efforts including debt collectors and litigation. Gauff Ingenieure 8 Greater Harare Water and Sanitation Investment Plan Investment Plan Report Appendix 11 To provide a baseline for comparison of different entities, i.e. Harare, Chitungwiza, Epworth, Norton Ruwa and Harare Water the key efficiencies modelled for Harare are applied to all other mentioned entities. The key revenue inputs are NRW, tariff and collection efficiency. 1.5 Financial Analysis Calculations The main output of the financial model is the annual income statement, cash flow and balance sheet that draws on input data from the assets tables, the main cost and revenue tables, following the methodology outlined in the main text of Chapter 11. The explanatory notes referenced in the various tables of the financial analysis are provided in the following table to support the data in terms of assumptions and calculation methodology. Table 1-7: Referenced Explanation Notes for Financial Analysis Tables Ref Notes [1] Provision to write-off bad debt was set at 100 % throughout the evaluation period. [2] Depreciation for both existing and new assets is reflected here, as calculated in existing and Investment assets tables and allocated as per the main cost table. [3] Debtors are calculated as the difference between billing and cash collections for the respective year. [4] Partial debt recovery is calculated in the revenue table based on a small proportion of 3-year old debt recovered as cash collections. [5] With past history of deficit cash flow funded in part from creditors the entity has become uncreditworthy and future cash flow is based on a strictly cash on delivery basis, i.e. costs = expenditure. [6] The value of fixed assets is returned as the depreciated residual value of existing and investment assets calculated in the respective existing assets and investment assets tables. [7] Accumulated cash reserves/(deficit) [8] Debtors as defined under note [3]. [9] Assume two months’ worth of fixed costs (except personnel), variable and maintenance. [10] Balance of total assets and (less) long term liabilities. [11] The balance on loans is represented as long term liabilities. [12] The output, in particular from the income statement and the cash flows are brought forward to the dashboard and other results tabulations and charts as presented in the main text of Chapter 11. Gauff Ingenieure 9 Greater Harare Water and Sanitation Investment Plan Appendix 11 Greater Harare GREATER HARARE Detailed Cost Calculations ITEM ASSUMPTION/ NOTE REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 NOTE VALUE VOLUMES 3 Average water demand [1] 000 m 162,790 162,790 203,907 201,797 199,686 197,576 195,466 193,356 197,998 202,640 207,283 211,925 216,567 221,210 225,852 230,494 235,137 239,779 3 Peak water demand Seasonal factor 1.25 [2] 000 m 203,488 203,488 254,884 252,246 249,608 246,970 244,333 241,695 247,498 253,301 259,103 264,906 270,709 276,512 282,315 288,118 293,921 299,724 Production Capacity 000 m3 162,790 162,790 246,010 246,010 246,010 246,010 246,010 246,010 246,010 282,510 282,510 282,510 282,510 282,510 282,510 282,510 300,760 300,760 Treatment surplus/(deficit) [2] (40,698) (40,698) (8,874) (6,236) (3,598) (960) 1,677 4,315 (1,488) 29,209 23,407 17,604 11,801 5,998 195 (5,608) 6,839 1,036 3 Raw Water [3] 000 m 170,930 170,930 214,102 211,886 209,671 207,455 205,239 203,024 207,898 212,772 217,647 222,521 227,396 232,270 237,145 242,019 246,894 251,768 Assumed Production losses [3] % 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 3 Water Produced [4] 000 m 162,790 162,790 203,907 201,797 199,686 197,576 195,466 193,356 197,998 202,640 207,283 211,925 216,567 221,210 225,852 230,494 235,137 239,779 Proportion of bulk water available [5] % 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 0% 3 Water bought in bulk Bulk available? (y/n) n [6] 000 m - - - - - - - - - - - - - - - - - - 3 Water available [7] 000 m 162,790 162,790 203,907 201,797 199,686 197,576 195,466 193,356 197,998 202,640 207,283 211,925 216,567 221,210 225,852 230,494 235,137 239,779 COST STREAMS CAPITAL COSTS Disbursements on capital investments [8] Disbursements from GHWSSIP grant 000 USD - 720 2,944 2,000 100,520 89,517 46,679 46,679 44,679 - - - - 102,714 102,714 52,737 - - Disbursements from GH WSSIP concessionary loan 000 USD - - - - - - - - - - - - - - - - - - Disbursements from GHWSSIP loan 000 USD - 720 2,944 2,000 100,520 89,517 46,679 46,679 44,679 - - - - 102,714 102,714 52,737 - - Disbursements from own resources 000 USD - - - - - 15,196 15,196 15,196 3,481 1,185 3,481 40,651 18,677 18,677 18,677 10,374 8,079 10,374 Disbursements from external/private invest. 000 USD - 29,215 29,215 29,215 29,215 29,215 29,215 29,215 62,336 62,336 62,336 62,336 62,336 62,336 62,336 62,336 62,336 62,336 Disbursements from CMEC 000 USD - 129,600 - - - - - - - - - - - - - - - - Disbursements from ZimFund grant 000 USD - 14,200 - - - - - - - - - - - - - - - - Total Disbursements for investments 000 USD - 174,455 35,102 33,215 230,255 223,445 137,769 137,769 155,175 63,521 65,817 102,987 81,013 286,441 286,441 178,185 70,415 72,711 Repayments of principal repay period Repayment of GHWSSIP loan principal 0 yr grace, repay 25 years 000 USD - 29 147 227 4,247 7,828 9,695 11,562 13,350 13,350 13,350 13,350 13,350 17,458 21,567 23,676 23,676 23,676 Repayment of CMEC principal 3 yr grace, repay in 5 years 000 USD 25,920 25,920 25,920 25,920 25,920 - - - Total repayment of principal 000 USD - 29 147 227 30,167 33,748 35,615 37,482 39,270 13,350 13,350 13,350 13,350 17,458 21,567 23,676 23,676 23,676 Balance on loans Balance of concessionary loan principal year end 000 USD - - - - - - - - - - - - - - - - - - Balance of GHWSSIP loan principal year end 000 USD - 691 3,488 5,262 101,534 183,223 220,207 255,324 286,653 273,304 259,954 246,605 233,255 318,511 399,659 428,719 405,043 381,367 Balance of CMEC loan year end 000 USD - 129,600 129,600 129,600 103,680 77,760 51,840 25,920 - - - - - - - - - - Total balance on loans year end 000 USD - 130,291 133,088 134,862 205,214 260,983 272,047 281,244 286,653 273,304 259,954 246,605 233,255 318,511 399,659 428,719 405,043 381,367 Interest on Loans Interest on existing loans 000 USD Interest on GHWSSIP loan Interest rate 5.0% p.a. 000 USD - 36 182 274 5,289 9,553 11,495 13,344 15,000 14,333 13,665 12,998 12,330 16,798 21,061 22,620 21,436 20,252 Interest on CMEC loan Interest rate 3.5% p.a. 000 USD - 4,536 4,536 4,536 4,536 3,629 2,722 1,814 907 - - - - - - - - - Total interest on loans 000 USD - 4,572 4,718 4,810 9,825 13,181 14,217 15,159 15,907 14,333 13,665 12,998 12,330 16,798 21,061 22,620 21,436 20,252 Depreciation Depreciation on existing assets Alloc of calc depr. 0% [9] 000 USD - - - - - - - - - - - - - - - - - - Assumed proportion of calc depreciation [10] % 5% 5% 5% 5% 5% 10% 10% 10% 10% 10% 10% 10% 10% 10% 10% 10% 10% Depreciation on Capital Investment [10] 000 USD 177 212 245 648 1,029 2,472 2,888 3,273 3,391 3,526 3,984 3,968 4,490 5,117 5,356 5,468 5,622 Sub-Total Capital Costs 000 USD - 618,872 346,321 346,473 951,572 ######## 921,769 946,196 997,283 732,405 709,097 755,863 683,864 ######## ######## ######## ######## ######## OPERATION - Variable Bulk water N/A 3 Assumed unit cost for bulk water N/A [11] USD/m 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 Annual bulk water cost N/A 000 USD Abstraction Assumed unit abstraction cost inflation 0% p.a. USD/m3 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 Adjust (actual/desired level) on existing gradual [12] % 0% 0% 5% 5% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 100% 100% 100% 100% Annual abstraction cost 000 USD - - 642 636 1,258 2,489 3,694 4,873 6,237 7,660 9,141 10,681 12,279 13,936 14,229 14,521 14,814 15,106 Power 3 Assumed unit power cost Inflation 0% p.a. [13] USD/m 0.07 0.07 0.07 0.07 0.07 0.07 0.07 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 Annual power cost 000 USD 11,418 11,418 14,302 14,154 14,006 13,858 13,710 15,710 16,087 16,465 16,842 17,219 17,596 17,973 18,350 18,728 19,105 19,482 Chemical 3 Assumed unit chemical cost Inflation p.a. 0% p.a. [14] USD/m 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 Annual chemical cost 000 USD 8,449 8,449 10,583 10,473 10,364 10,254 10,145 10,035 10,276 10,517 10,758 10,999 11,240 11,481 11,722 11,963 12,204 12,445 Sub-Total Variable Costs 000 USD 19,867 19,867 25,527 25,263 25,628 26,601 27,549 30,618 32,600 34,641 36,741 38,899 41,115 43,390 44,301 45,211 46,122 47,033 OPERATION - Fixed Personnel [15] 000 USD 26,395 26,392 30,876 32,692 34,508 36,981 36,981 36,981 36,981 36,981 36,981 36,981 36,981 36,981 36,981 36,981 36,981 36,981 Transport [16] Number of vehicles No. 25 20 20 20 20 35 35 35 35 35 35 35 35 35 35 35 35 35 Number of Motor cycles No 50 40 40 40 40 60 60 60 60 60 60 60 60 60 60 60 60 60 Number of Trucks No 5 4 4 4 4 7 7 7 7 7 7 7 7 7 7 7 7 7 Assumed unit fuel cost 0% p.a. USD/litre 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 Annual vehicle operating cost 000 USD 141 113 113 113 113 191 191 191 191 191 191 191 191 191 191 191 191 191 Other administration costs % of personnel 15% [17] 000 USD 3,959 3,959 4,631 4,904 5,176 5,547 5,547 5,547 5,547 5,547 5,547 5,547 5,547 5,547 5,547 5,547 5,547 5,547 Sub-Total Fixed Costs 000 USD 30,495 30,463 35,620 37,708 39,797 42,719 42,719 42,719 42,719 42,719 42,719 42,719 42,719 42,719 42,719 42,719 42,719 42,719 MAINTENANCE Adjust (actual/desired level) on maintenancgradual [18] % 10% 10% 15% 20% 25% 30% 35% 40% 50% 50% 50% 50% 50% 50% 50% 50% 50% 50% Existing assets 000 USD 2,779 2,779 4,141 5,521 6,902 8,282 9,522 10,818 13,523 13,517 13,516 13,516 13,514 9,354 9,354 8,721 8,706 8,504 GHWSSIP Investments 000 USD - 40 122 226 1,102 2,299 3,411 4,732 7,037 7,438 7,863 8,672 9,254 10,793 12,331 13,122 13,594 14,090 Other investments 000 USD - 216 324 431 539 647 755 863 1,079 1,079 1,079 1,079 1,079 1,079 1,079 1,079 1,079 1,079 Sub-Total Maintenance 000 USD 2,779 3,035 4,587 6,179 8,543 11,228 13,688 16,413 21,638 22,033 22,457 23,266 23,846 21,226 22,764 22,921 23,379 23,673 Average Unit Bulk Cost Calculation ASSUMPTION/ NOTE REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 NOTE VALUE Assumed unit abstraction cost USD/m3 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 Gauff Ingenieure 1 of 4 Greater Harare Water and Sanitation Investment Plan Appendix 11 Greater Harare GREATER HARARE Detailed Cost Calculations ITEM ASSUMPTION/ NOTE REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 NOTE VALUE Assumed unit power cost USD/m3 0.0701389 0.0701389 0.0701389 0.0701389 0.0701389 0.0701389 0.0701389 0.08125 0.08125 0.08125 0.08125 0.08125 0.08125 0.08125 0.08125 0.08125 0.08125 0.08125 Assumed unit chemical cost USD/m3 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 Proportion of Financial costs 25% USD/m3 - 0.0003 0.0005 0.0006 0.0074 0.0134 0.0179 0.0210 0.0231 0.0219 0.0207 0.0200 0.0188 0.0241 0.0290 0.0303 0.0286 0.0270 Proportion of fixed costs 25% USD/m3 0.0468 0.0468 0.0437 0.0467 0.0498 0.0541 0.0546 0.0552 0.0539 0.0527 0.0515 0.0504 0.0493 0.0483 0.0473 0.0463 0.0454 0.0445 Proportion of Maintenance costs 30% USD/m3 0.0051 0.0056 0.0067 0.0092 0.0128 0.0170 0.0210 0.0255 0.0328 0.0326 0.0325 0.0329 0.0330 0.0288 0.0302 0.0298 0.0298 0.0296 Sub-total unit cost for water Average 0.28 USD/m3 0.23 0.23 0.23 0.24 0.25 0.27 0.28 0.29 0.30 0.30 0.30 0.30 0.29 0.29 0.30 0.30 0.30 0.29 Average Unit Retail Cost Calculation ASSUMPTION/ NOTE REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 NOTE VALUE Assumed unit cost for bulk water USD/m3 - - - - - - - - - - - - - - - - - - Assumed unit abstraction cost USD/m3 0.0600 0.0600 0.0600 0.0600 0.0600 0.0600 0.0600 0.0600 0.0600 0.0600 0.0600 0.0600 0.0600 0.0600 0.0600 0.0600 0.0600 0.0600 Assumed unit power cost USD/m3 0.0701 0.0701 0.0701 0.0701 0.0701 0.0701 0.0701 0.0813 0.0813 0.0813 0.0813 0.0813 0.0813 0.0813 0.0813 0.0813 0.0813 0.0813 Assumed unit chemical cost USD/m3 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 Proportion of Financial costs 60% USD/m3 - 0.0016 0.0022 0.0028 0.0301 0.0511 0.0645 0.0720 0.0780 0.0729 0.0682 0.0650 0.0602 0.0760 0.0903 0.0934 0.0869 0.0809 Proportion of fixed costs 60% USD/m3 0.2498 0.2312 0.2010 0.2012 0.2017 0.2064 0.1974 0.1894 0.1823 0.1757 0.1694 0.1634 0.1578 0.1525 0.1474 0.1426 0.1380 0.1336 Proportion of Maintenance costs 60% USD/m3 0.0228 0.0230 0.0259 0.0330 0.0433 0.0542 0.0633 0.0728 0.0924 0.0906 0.0890 0.0890 0.0881 0.0758 0.0785 0.0765 0.0755 0.0740 Sub-total unit cost for water Average 0.49 USD/m3 0.45 0.44 0.41 0.42 0.46 0.49 0.51 0.53 0.55 0.53 0.52 0.51 0.50 0.50 0.51 0.51 0.49 0.48 Adjustment for collection losses USD/m3 0.25 0.22 0.16 0.13 0.09 0.07 0.05 0.03 0.03 0.03 0.03 0.03 0.02 0.02 0.03 0.03 0.02 0.02 Total average cost covering water tariff USD/m3 0.70 0.66 0.58 0.54 0.55 0.57 0.56 0.55 0.57 0.56 0.55 0.54 0.52 0.52 0.53 0.53 0.52 0.51 Total average cost covering W&S tariff USD/m3 0.99 0.91 0.79 0.75 0.77 0.81 0.80 0.79 0.82 0.80 0.77 0.76 0.74 0.74 0.76 0.75 0.73 0.71 Calculated sewerage charges % 0.29 0.25 0.21 0.21 0.22 0.24 0.24 0.24 0.25 0.24 0.22 0.22 0.22 0.22 0.23 0.22 0.21 0.20 Calculated proportion of sewerage of Water 41% 38% 36% 39% 40% 42% 43% 44% 44% 43% 40% 41% 42% 42% 43% 42% 40% 39% Water tariff used in Fin Model 0% 1.45 1.35 1.20 1.15 1.15 1.15 1.15 1.15 1.10 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 Unit Costs Chemicals UNIT The unit cost of Borehole Chlorine USD/kg chemicals is 4 calculated for Dosing rate g/m3 5 two scenarios, Costs/m3 USD/m3 (a) for surface 0.02 Alum USD/kg water intakes Dosing rate g/m3 and (b) borehole Costs/m3 USD/m3 abstraction and Lime USD/kg the relevant Dosing rate g/m3 cost is applied Costs/m3 USD/m3 to the unit of Total Unit Chemical Cost USD/m3 water produced 0.0200 i th t bl Power UNIT Long-Term Volume m3/h For details on 4,633 Pumping head H Q & h refer to 117 Pump efficiency % pumping tab 0.72 KWh KW/h Both the 752.8625 Power consumption KW/m3 midium and 0.1625 Cost/ KWh USD/KWh long term unit 0.5 Cost per m3 USD/m3 cost 0.0813 Explanation notes for referenced items above: [1] Water demand projected for 2013, 2020 and 2030 representing three milestones. The periods between these were interpolated on a linear basis. [2] The peak seasonal factor and peak demand are calculated as a function of average demand and used to ascertain the production surplus/(deficit). [3] Production losses attributable to backwash, flushing and other cleaning operations are assumed to increase the abstraction of raw water. [4] The water produced is the volume of water after production losses equal to either the demand or the production capacity, whichever smaller. [5] The proportion of bulk water available may be less than 100 % in the event that bulk water supply is practically throttled or cannot be produced. [6] If the entity does not produce (adequate) water and bulk water is available (even if only limited), the assumed volumes of water bought are calculated considering demand, own production and proportional available. [7] The volume of water available is the addition of water produced plus water bought in bulk (if any). [8] Details on funding of investments are provided in a separate table (see Investment Assets Tab).. [9] Depreciation is based on replacement value and economic life. In view of recent financial performance it is not realistic to bring these calculated costs to account, thus, the depreciation for existing assets was set to nil through entry [10] As with existing assets, the full annual value of depreciation of new assets is high and realistically not a priority and therefore revised downward. [11] Bulk water costs are calculated separately; considering abstraction, power, chemicals, financial, fixed and maintenance costs and compared with current levels. [12] Abstraction costs are gradually adjusted from current payment levels to required levels. [13] Unit power costs for pumping are calculated on the basis of current and anticipated Q & h values and pumping times as detailed in a separate table (see Pumping tab). [14] Unit chemical costs are calculated for surface water and borehole abstraction and applied accordingly; they include treatment chemicals (aluminium sulphate, lime) and disinfection (chlorine) as detailed in a separate table below the [15] Personnel costs are based on separately calculated (see HR tab) number of staff, assumed scales, allowances, contribution to pension, etc. and a % allocation to water and sanitation to take into account recharges for other [16] The calculation of transport costs is based on the number of units, average annual distance travelled/hours worked, fuel consumption per km/hr. and fuel price. [17] Other administration costs including insurance, external professional fees (e.g. audit), office stationery, office utilities, etc. are estimated as a proportion of employment costs. [18] Desired and ideal maintenance costs are calculated for both existing and future assets, but are high and from past experience not realistic to apply the full cost. Therefore, an adjustment of the desired to the realistic level is carried Gauff Ingenieure 2 of 4 Greater Harare Water and Sanitation Investment Plan Appendix 11 Greater Harare GREATER HARARE Detailed revenue calculations ITEM ASSUMPTION/ NOTE REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 NOTE VALUE WATER VOLUMES 3 Water Produced From cost table 000 m 162,790 162,790 203,907 201,797 199,686 197,576 195,466 193,356 197,998 202,640 207,283 211,925 216,567 221,210 225,852 230,494 235,137 239,779 Water bought in bulk From cost table 000 m3 - - - - - - - - - - - - - - - - - - 3 Demand for bulk water 000 m 38,015 37,411 38,814 40,217 41,620 43,023 40,776 42,180 43,269 44,359 45,449 46,538 47,628 48,718 49,808 50,897 51,987 53,077 Assumed proportion of bulk water supplied [1] % 3 Water sold in bulk Sum of satellites [1] 000 m - - - - - - - - - - - - - - - - - - Total Water available 000 m3 162,790 162,790 203,907 201,797 199,686 197,576 195,466 193,356 197,998 202,640 207,283 211,925 216,567 221,210 225,852 230,494 235,137 239,779 Non-Revenue Water (NRW) [2] % 55% 51% 48% 44% 41% 37% 34% 30% 29% 28% 27% 26% 25% 24% 23% 22% 21% 20% NRW reduction [2] % 3.6% 3.6% 3.6% 3.6% 3.6% 3.6% 3.6% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% Total volumes billed incl. [sold] bulk 000 m3 73,256 79,069 106,323 112,430 118,386 124,191 129,845 135,349 140,579 145,901 151,316 156,825 162,426 168,119 173,906 179,786 185,758 191,823 3 Total Volumes Billed [Sold] excl. bulk [3] 000 m 73,256 79,069 106,323 112,430 118,386 124,191 129,845 135,349 140,579 145,901 151,316 156,825 162,426 168,119 173,906 179,786 185,758 191,823 REVENUE STREAMS 3 Assumed tariff for Bulk Supply (if any) Keep current levels [4] USD/m 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 3 Combined average retail tariff (simplified) Water + Sewer incl fixed [5] USD/m 1.45 1.35 1.20 1.15 1.15 1.15 1.15 1.15 1.10 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 Calculated Bulk Sales 000 USD - - - - - - - - - - - - - - - - - - Calculated Combined Retail Sales 000 USD 106,220 106,744 127,587 129,294 136,143 142,819 149,322 155,651 154,637 131,311 136,185 141,142 146,183 151,307 156,516 161,807 167,182 172,641 Total Billing for Water & Sewerage 000 USD 106,220 106,744 127,587 129,294 136,143 142,819 149,322 155,651 154,637 131,311 136,185 141,142 146,183 151,307 156,516 161,807 167,182 172,641 Collection Efficiency [6] % 45% 50% 60% 70% 80% 85% 90% 95% 95% 95% 95% 95% 95% 95% 95% 95% 95% 95% Collections from Water & Sewerage 000 USD 47,799 53,372 76,552 90,506 108,915 121,396 134,390 147,869 146,905 124,745 129,376 134,085 138,874 143,742 148,690 153,717 158,823 164,009 Other revenue (recovery of old debt) % of 3 year debt 5.0% [7] 000 USD 2,315 2,555 2,921 2,669 2,552 1,939 1,361 1,071 747 389 387 328 340 353 365 378 391 Total revenue collection 000 USD 47,799 55,687 79,107 93,427 111,583 123,948 136,329 149,230 147,976 125,492 129,765 134,472 139,202 144,083 149,043 154,082 159,201 164,400 Explanation notes for referenced items above: [1] It is not anticipated that Harare will be able to fully cover water demand until investments are made and efficiencies have improved. To reflect this condition, a proportion of bulk supply reflected as revenue for [2] NRW is aligned to curredntly reported levels and deemed to improve with reforms and future investments, whereby milestone targets are set for 2020 and 2030. [3] Volumes of water sold bulk and excl bulk is based on bulk sold before NRW and retail after NRW at different tariffs [4] While detailed bulk tariff calculations are provided below the main cost table, the current existing bulk tariff is applied throughout. [5] The combined tariff includes water, sewerage and any fixed charge component applied as an overall unit tariff. [6] The collection efficiency in the base year appears to be anoutlier compared to previous years. Future collection efficiencies are based o agreed milestones. [7] A proportion of old debt (3-years old) is assumed to be collected. Gauff Ingenieure 3 of 4 Greater Harare Water and Sanitation Investment Plan Appendix 11 Greater Harare GREATER HARARE INCOME STATEMENT ITEM REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Income Streams Bulk sales 000 USD - - - - - - - - - - - - - - - - - - Combined Water & Sewerage 000 USD 106,220 106,744 127,587 129,294 136,143 142,819 149,322 155,651 154,637 131,311 136,185 141,142 146,183 151,307 156,516 161,807 167,182 172,641 Sub-Total 000 USD 106,220 106,744 127,587 129,294 136,143 142,819 149,322 155,651 154,637 131,311 136,185 141,142 146,183 151,307 156,516 161,807 167,182 172,641 Cost Streams [=Expenditure] Operation - Fixed Costs 000 USD 30,495 30,463 35,620 37,708 39,797 42,719 42,719 42,719 42,719 42,719 42,719 42,719 42,719 42,719 42,719 42,719 42,719 42,719 Operation - Variable 000 USD 19,867 19,867 25,527 25,263 25,628 26,601 27,549 30,618 32,600 34,641 36,741 38,899 41,115 43,390 44,301 45,211 46,122 47,033 Maintenance 000 USD 2,779 3,035 4,587 6,179 8,543 11,228 13,688 16,413 21,638 22,033 22,457 23,266 23,846 21,226 22,764 22,921 23,379 23,673 Capital Charges 000 USD - 4,572 4,718 4,810 9,825 13,181 14,217 15,159 15,907 14,333 13,665 12,998 12,330 16,798 21,061 22,620 21,436 20,252 Sub-Total 000 USD 53,140 57,936 70,451 73,960 83,792 93,729 98,172 104,908 112,865 113,726 115,582 117,882 120,011 124,133 130,845 133,472 133,656 133,677 Surplus/(Deficit) 000 USD 53,080 48,808 57,137 55,334 52,351 49,090 51,150 50,743 41,772 17,585 20,603 23,261 26,172 27,174 25,670 28,336 33,526 38,964 ADJUSTED INCOME STATEMENT Income Total Income 000 USD 106,220 106,744 127,587 129,294 136,143 142,819 149,322 155,651 154,637 131,311 136,185 141,142 146,183 151,307 156,516 161,807 167,182 172,641 Expenditure Total Expenses 000 USD 53,140 57,936 70,451 73,960 83,792 93,729 98,172 104,908 112,865 113,726 115,582 117,882 120,011 124,133 130,845 133,472 133,656 133,677 Provision for debt write-off [1] 000 USD 29,211 53,372 51,035 38,788 27,229 21,423 14,932 7,783 7,732 6,566 6,809 7,057 7,309 7,565 7,826 8,090 8,359 8,632 Depreciation [2] 000 USD - 177 212 245 648 1,029 2,473 2,888 3,273 3,391 3,526 3,984 3,968 4,490 5,117 5,356 5,468 5,622 Total Expenses incl. Depreciation 000 USD 82,351 111,485 121,698 112,994 111,669 116,181 115,577 115,579 123,870 123,683 125,917 128,923 131,288 136,189 143,788 146,918 147,483 147,931 Adjusted Surplus/(Deficit) 000 USD 23,870 (4,742) 5,890 16,300 24,474 26,638 33,745 40,073 30,767 7,628 10,268 12,219 14,895 15,119 12,727 14,889 19,700 24,710 CASH FLOW STATEMENT ITEM REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Cash Flow from Operating Activities Profit/(loss) from income statement 000 USD 23,870 (4,742) 5,890 16,300 24,474 26,638 33,745 40,073 30,767 7,628 10,268 12,219 14,895 15,119 12,727 14,889 19,700 24,710 Adjust for non-cash items 000 USD Depreciation [2] 000 USD 0 177 212 (245) 648 1,029 2,473 2,888 3,273 3,391 3,526 3,984 3,968 4,490 5,117 5,356 5,468 5,622 Provision for debt write-off 000 USD 29,211 53,372 51,035 38,788 27,229 21,423 14,932 7,783 7,732 6,566 6,809 7,057 7,309 7,565 7,826 8,090 8,359 8,632 Net adjusted income for the year 000 USD 53,080 48,808 57,137 54,843 52,351 49,090 51,150 50,743 41,772 17,585 20,603 23,261 26,172 27,174 25,670 28,336 33,526 38,964 Adjust for Change in Working Capital (Increase)/Decrease in debtors [3] 000 USD (58,421) (53,372) (51,035) (38,788) (27,229) (21,423) (14,932) (7,783) (7,732) (6,566) (6,809) (7,057) (7,309) (7,565) (7,826) (8,090) (8,359) (8,632) Partial debt recovery [4] 000 USD 0 2,315 2,555 2,921 2,669 2,552 1,939 1,361 1,071 747 389 387 328 340 353 365 378 391 Increase/(Decrease) in creditors [5] 000 USD 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Net change in working capital 000 USD (58,421) (51,057) (48,480) (35,867) (24,560) (18,871) (12,993) (6,421) (6,661) (5,819) (6,420) (6,671) (6,981) (7,225) (7,473) (7,725) (7,981) (8,241) Cash Flow from Investment Activities Repayment of principal 000 USD 0 (29) (147) (227) (30,167) (33,748) (35,615) (37,482) (39,270) (13,350) (13,350) (13,350) (13,350) (17,458) (21,567) (23,676) (23,676) (23,676) Net change generaged by/(used in investment activit 000 USD 0 (29) (147) (227) (30,167) (33,748) (35,615) (37,482) (39,270) (13,350) (13,350) (13,350) (13,350) (17,458) (21,567) (23,676) (23,676) (23,676) Cash Flow Net increase/(decrease) in cash & equiv. 000 USD (5,341) (2,278) 8,510 18,749 (2,376) (3,529) 2,542 6,840 (4,158) (1,583) 833 3,241 5,842 2,491 (3,369) (3,065) 1,870 7,047 Cash & cash equiv. at beginning of year 000 USD 0 (5,341) (7,619) 891 19,641 17,264 13,735 16,277 23,117 18,958 17,375 18,208 21,449 27,291 29,782 26,413 23,347 25,217 Cash & cash equivalents at end of year 000 USD (5,341) (7,619) 891 19,641 17,264 13,735 16,277 23,117 18,958 17,375 18,208 21,449 27,291 29,782 26,413 23,347 25,217 32,264 BALANCE SHEET (Simplified) ITEM REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Assets Fixed Assets [6] Existing Plant & equipment 891,515 855,793 820,071 784,749 749,427 714,104 678,782 644,127 609,632 575,136 540,654 506,176 471,698 437,227 411,076 384,925 360,042 335,225 Future Plant & equipment 29,988 63,725 94,908 315,074 520,823 636,743 748,511 873,830 906,316 939,750 1,005,772 1,049,976 1,294,394 1,532,539 1,660,039 1,678,653 1,698,019 Total Fixed Assets 891,515 885,781 883,796 879,656 1,064,500 1,234,927 1,315,526 1,392,638 1,483,462 1,481,452 1,480,403 1,511,947 1,521,674 1,731,621 1,943,615 2,044,964 2,038,695 2,033,244 Current Assets & Liabilities Short term assets (cash) [7] (5,341) (7,619) 891 19,641 17,264 13,735 16,277 23,117 18,958 17,375 18,208 21,449 27,291 29,782 26,413 23,347 25,217 32,264 Debtors [8] 26,555 26,686 31,897 32,323 34,036 35,705 37,331 38,913 38,659 32,828 34,046 35,286 36,546 37,827 39,129 40,452 41,796 43,160 Creditors [9] (4,458) (4,495) (5,810) (6,076) (6,576) (7,261) (7,829) (8,795) (9,996) (10,402) (10,823) (11,317) (11,783) (11,726) (12,134) (12,312) (12,540) (12,741) Net Current Assets 16,757 14,571 26,978 45,888 44,724 42,179 45,778 53,235 47,621 39,801 41,432 45,417 52,053 55,883 53,408 51,487 54,473 62,684 Total Assets 908,272 900,352 910,774 925,544 1,109,224 1,277,106 1,361,304 1,445,873 1,531,083 1,521,253 1,521,835 1,557,365 1,573,727 1,787,505 1,997,023 2,096,451 2,093,167 2,095,928 Equity & Liabilites Equity [10] 908,272 770,061 777,686 790,682 904,010 1,016,123 1,089,257 1,164,629 1,244,430 1,247,949 1,261,881 1,310,760 1,340,472 1,468,993 1,597,364 1,667,732 1,688,124 1,714,561 Long Term liabilities [11] 0 130,291 133,088 134,862 205,214 260,983 272,047 281,244 286,653 273,304 259,954 246,605 233,255 318,511 399,659 428,719 405,043 381,367 Total Equity & Liabilities 908,272 900,352 910,774 925,544 1,109,224 1,277,106 1,361,304 1,445,873 1,531,083 1,521,253 1,521,835 1,557,365 1,573,727 1,787,505 1,997,023 2,096,451 2,093,167 2,095,928 notes for referenced items above: [1] Provisions to write off bad debt was set at 50 % in the base year and 100 % thereafter to gradually introduce the concept which does not appear to be ccarried out currently. [2] Depreciation for both existing and new assets is reflected here, as calculated in existing and Investment assets tabs and allocated as per the main cost table under the Cost tab. [3] Debtors are calculated as the difference between billing and cash collections for the respective year. [4] Partial debt recovery is calculated in the revenue table based on a small proportion of 3-year old debt recovered as cash collections. [5] With past history of deficit cash flow funded in part from creditors the entity has become uncreditworthy and future cash flow is based on a strictly cash on delivery basis, i.e. costs = expenditure. [6] The value of fixed assets is returned as the depreciated residual value of existing and investment assets calculated in the respective existing assets and investment assets tabs. [7] Accumulated cash reserves/(deficit) [8] Debtors as defined under note [3] [9] Asume two months worth of fixed costs (except personnel), variable and maintenance. [10] Balance of total assets and (less) long term liabilities. [11] The balance on loans is represented as long term liabilities. Gauff Ingenieure 4 of 4 Greater Harare Water and Sanitation Investment Plan Appendix 11 Harare HARARE Detailed Cost Calculations ITEM ASSUMPTION/ NOTE REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 NOTE VALUE VOLUMES 3 Average water demand [1] 000 m 162,060 160,053 201,169 199,059 196,949 194,839 189,078 186,968 191,610 196,252 200,895 205,537 210,179 214,822 219,464 224,106 228,749 233,391 3 Peak water demand Seasonal factor 1.25 [2] 000 m 202,575 200,066 251,462 248,824 246,186 243,548 236,348 233,710 239,513 245,316 251,118 256,921 262,724 268,527 274,330 280,133 285,936 291,739 Production Capacity 000 m3 162,790 162,790 246,010 246,010 246,010 246,010 246,010 246,010 246,010 282,510 282,510 282,510 282,510 282,510 282,510 282,510 300,760 300,760 Treatment surplus/(deficit) [2] (39,785) (37,276) (5,452) (2,814) (176) 2,462 9,662 12,300 6,497 37,194 31,392 25,589 19,786 13,983 8,180 2,377 14,824 9,021 3 Raw Water [3] 000 m 170,163 168,055 211,228 209,012 206,796 204,581 198,532 196,316 201,191 206,065 210,940 215,814 220,688 225,563 230,437 235,312 240,186 245,061 Assumed Production losses [3] % 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 3 Water Produced [4] 000 m 162,060 160,053 201,169 199,059 196,949 194,839 189,078 186,968 191,610 196,252 200,895 205,537 210,179 214,822 219,464 224,106 228,749 233,391 Proportion of bulk water available [5] % 50% 55% 60% 65% 70% 75% 80% 85% 90% 95% 100% 100% 100% 100% 100% 100% 100% 100% 3 Water bought in bulk Bulk available? (y/n) n [6] 000 m - - - - - - - - - - - - - - - - - - 3 Water available [7] 000 m 162,061 160,053 201,170 199,060 196,950 194,839 189,079 186,969 191,611 196,253 200,896 205,538 210,180 214,823 219,465 224,107 228,750 233,392 COST STREAMS CAPITAL COSTS Disbursements on capital investments [8] Disbursements from GHWSSIP grant 000 USD - - 2,000 2,000 63,207 54,539 46,679 46,679 44,679 - - - - 79,706 79,706 52,697 - - Disbursements from GH WSSIP concessionary loan 000 USD - - - - - - - - - - - - - - - - - - Disbursements from GHWSSIP loan 000 USD - - 2,000 2,000 63,207 54,539 46,679 46,679 44,679 - - - - 79,706 79,706 52,697 - - Disbursements from own resources 000 USD - - - - - 15,196 15,196 15,196 2,678 383 2,678 17,874 17,874 17,874 17,874 8,133 5,837 8,133 Disbursements from external/private invest. 000 USD - 21,726 21,726 21,726 21,726 21,726 21,726 21,726 48,235 48,235 48,235 48,235 48,235 48,235 48,235 48,235 48,235 48,235 Disbursements from CMEC 000 USD - 129,600 - - - - - - - - - - - - - - - - Disbursements from ZimFund grant 000 USD - 14,200 - - - - - - - - - - - - - - - - Total Disbursements for investments 000 USD - 165,526 25,726 25,726 148,140 146,000 130,280 130,280 140,272 48,618 50,914 66,110 66,110 225,521 225,521 161,762 54,073 56,368 Repayments of principal repay period Repayment of GHWSSIP loan principal 0 yr grace, repay 20 years 000 USD - - 100 200 3,360 6,087 8,421 10,755 12,989 12,989 12,989 12,989 12,989 16,974 20,960 23,595 23,595 23,595 Repayment of CMEC principal 3 yr grace, repay in 5 years 000 USD 25,920 25,920 25,920 25,920 25,920 - - - Total repayment of principal 000 USD - - 100 200 29,280 32,007 34,341 36,675 38,909 12,989 12,989 12,989 12,989 16,974 20,960 23,595 23,595 23,595 Balance on loans Balance of concessionary loan principal year end 000 USD - - - - - - - - - - - - - - - - - - Balance of GHWSSIP loan principal year end 000 USD - - 1,900 3,700 63,547 111,998 150,256 186,180 217,870 204,881 191,891 178,902 165,913 228,644 287,390 316,492 292,898 269,303 Balance of CMEC loan year end 000 USD - 129,600 129,600 129,600 103,680 77,760 51,840 25,920 - - - - - - - - - - Total balance on loans year end 000 USD - 129,600 131,500 133,300 167,227 189,758 202,096 212,100 217,870 204,881 191,891 178,902 165,913 228,644 287,390 316,492 292,898 269,303 Interest on Loans Interest on existing loans 000 USD Interest on GHWSSIP loan Interest rate 5.0% p.a. 000 USD - - 100 195 3,345 5,904 7,934 9,847 11,543 10,893 10,244 9,595 8,945 12,281 15,417 17,004 15,825 14,645 Interest on CMEC loan Interest rate 3.5% p.a. 000 USD - 4,536 4,536 4,536 4,536 3,629 2,722 1,814 907 - - - - - - - - - Total interest on loans 000 USD - 4,536 4,636 4,731 7,881 9,533 10,655 11,661 12,450 10,893 10,244 9,595 8,945 12,281 15,417 17,004 15,825 14,645 Depreciation Depreciation on existing assets Alloc of calc depr. 0% [9] 000 USD - - - - - - - - - - - - - - - - - - Assumed proportion of calc depreciation Gradual increase [10] % 5% 10% 10% 10% 10% 10% 15% 20% 25% 30% 30% 30% 30% 30% 30% 30% 30% Depreciation on Capital Investment [10] 000 USD 169 388 438 998 1,541 1,939 3,507 5,372 6,933 8,641 9,355 9,608 11,147 12,694 13,280 13,525 13,899 Sub-Total Capital Costs 000 USD - 599,492 324,311 328,351 706,053 756,137 756,684 784,939 824,373 561,696 540,718 544,547 517,523 977,988 ######## ######## 786,305 741,721 OPERATION - Variable Bulk water N/A 3 Assumed unit cost for bulk water N/A [11] USD/m 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 Annual bulk water cost N/A 000 USD Abstraction Assumed unit abstraction cost inflation 0% p.a. USD/m3 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 Adjust (actual/desired level) on existing gradual [12] % 0% 0% 5% 5% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 100% 100% 100% 100% Annual abstraction cost 000 USD - - 634 627 1,241 2,455 3,574 4,712 6,036 7,418 8,859 10,359 11,917 13,534 13,826 14,119 14,411 14,704 Power 3 Assumed unit power cost Inflation 0% p.a. [13] USD/m 0.07 0.07 0.07 0.07 0.07 0.07 0.07 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 Annual power cost 000 USD 11,367 11,226 14,110 13,962 13,814 13,666 13,262 15,191 15,568 15,946 16,323 16,700 17,077 17,454 17,831 18,209 18,586 18,963 Chemical 3 Assumed unit chemical cost Inflation p.a. 0% p.a. [14] USD/m 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 Annual chemical cost 000 USD 8,411 8,307 10,441 10,331 10,222 10,112 9,813 9,704 9,945 10,186 10,426 10,667 10,908 11,149 11,390 11,631 11,872 12,113 Sub-Total Variable Costs 000 USD 19,778 19,533 25,184 24,920 25,276 26,233 26,648 29,606 31,549 33,549 35,609 37,726 39,903 42,137 43,048 43,958 44,869 45,780 OPERATION - Fixed Personnel [15] 000 USD 23,001 24,639 23,309 26,223 26,223 29,542 29,542 29,542 29,542 29,542 29,542 29,542 29,542 29,542 29,542 29,542 29,542 29,542 Transport [16] Number of vehicles No. 25 20 20 20 20 35 35 35 35 35 35 35 35 35 35 35 35 35 Number of Motor cycles No 50 40 40 40 40 60 60 60 60 60 60 60 60 60 60 60 60 60 Number of Trucks No 5 4 4 4 4 7 7 7 7 7 7 7 7 7 7 7 7 7 Assumed unit fuel cost 0% p.a. USD/litre 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 Annual vehicle operating cost 000 USD 141 113 113 113 113 191 191 191 191 191 191 191 191 191 191 191 191 191 Other administration costs % of personnel 20% [17] 000 USD 4,600 4,928 4,662 5,245 5,245 5,908 5,908 5,908 5,908 5,908 5,908 5,908 5,908 5,908 5,908 5,908 5,908 5,908 Sub-Total Fixed Costs 000 USD 27,741 29,680 28,083 31,580 31,580 35,641 35,641 35,641 35,641 35,641 35,641 35,641 35,641 35,641 35,641 35,641 35,641 35,641 MAINTENANCE Adjust (actual/desired level) on maintenancGradual increase [18] % 10% 10% 15% 20% 25% 30% 35% 40% 50% 50% 50% 50% 50% 50% 50% 50% 50% 50% Existing assets 000 USD 2,356 2,356 3,533 4,711 5,889 7,067 8,105 9,199 11,498 11,492 11,492 11,492 11,492 7,332 7,332 7,332 7,332 7,132 GHWSSIP Investments 000 USD - 29 88 159 792 1,663 2,631 3,796 5,756 6,046 6,359 6,830 7,301 8,580 9,859 10,522 10,869 11,238 Other investments 000 USD - 216 324 431 539 647 755 863 1,079 1,079 1,079 1,079 1,079 1,079 1,079 1,079 1,079 1,079 Sub-Total Maintenance 000 USD 2,356 2,601 3,945 5,301 7,221 9,377 11,491 13,858 18,333 18,616 18,930 19,400 19,871 16,991 18,270 18,933 19,279 19,449 Gauff Ingenieure 1 of 4 Greater Harare Water and Sanitation Investment Plan Appendix 11 Harare Average Unit Bulk Cost Calculation ASSUMPTION/ NOTE REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 NOTE VALUE Assumed unit abstraction cost USD/m3 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 Assumed unit power cost USD/m3 0.0701389 0.0701389 0.0701389 0.0701389 0.0701389 0.0701389 0.0701389 0.08125 0.08125 0.08125 0.08125 0.08125 0.08125 0.08125 0.08125 0.08125 0.08125 0.08125 Assumed unit chemical cost USD/m3 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 Proportion of Financial costs 40% USD/m3 - 0.0004 0.0010 0.0013 0.0088 0.0153 0.0209 0.0286 0.0353 0.0363 0.0376 0.0369 0.0353 0.0436 0.0512 0.0541 0.0513 0.0489 Proportion of fixed costs 40% USD/m3 0.0685 0.0742 0.0558 0.0635 0.0641 0.0732 0.0754 0.0763 0.0744 0.0726 0.0710 0.0694 0.0678 0.0664 0.0650 0.0636 0.0623 0.0611 Proportion of Maintenance costs 40% USD/m3 0.0058 0.0065 0.0078 0.0107 0.0147 0.0193 0.0243 0.0296 0.0383 0.0379 0.0377 0.0378 0.0378 0.0316 0.0333 0.0338 0.0337 0.0333 Sub-total unit cost for water Average 0.31 USD/m3 0.26 0.26 0.25 0.26 0.27 0.29 0.30 0.33 0.34 0.34 0.34 0.34 0.33 0.33 0.34 0.34 0.34 0.34 Average Unit Retail Cost Calculation ASSUMPTION/ NOTE REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 NOTE VALUE Assumed unit cost for bulk water USD/m3 - - - - - - - - - - - - - - - - - - Assumed unit abstraction cost USD/m3 0.0600 0.0600 0.0600 0.0600 0.0600 0.0600 0.0600 0.0600 0.0600 0.0600 0.0600 0.0600 0.0600 0.0600 0.0600 0.0600 0.0600 0.0600 Assumed unit power cost USD/m3 0.0701 0.0701 0.0701 0.0701 0.0701 0.0701 0.0701 0.0812 0.0812 0.0812 0.0812 0.0812 0.0812 0.0812 0.0812 0.0812 0.0812 0.0812 Assumed unit chemical cost USD/m3 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 3 Proportion of Financial costs 60% USD/m - 0.0016 0.0033 0.0041 0.0268 0.0443 0.0574 0.0757 0.0936 0.0964 0.0999 0.0966 0.0913 0.1114 0.1291 0.1345 0.1261 0.1187 Proportion of fixed costs 60% USD/m3 0.2770 0.2776 0.1895 0.2029 0.1947 0.2122 0.2071 0.2022 0.1973 0.1927 0.1885 0.1817 0.1754 0.1694 0.1637 0.1583 0.1531 0.1482 Proportion of Maintenance costs 60% USD/m3 0.0235 0.0243 0.0266 0.0341 0.0445 0.0558 0.0668 0.0786 0.1015 0.1007 0.1001 0.0989 0.0978 0.0808 0.0839 0.0841 0.0828 0.0809 Sub-total unit cost for water Average 0.53 USD/m3 0.48 0.49 0.40 0.42 0.45 0.49 0.51 0.55 0.59 0.58 0.58 0.57 0.56 0.55 0.57 0.57 0.56 0.54 Adjustment for collection losses USD/m3 0.28 0.24 0.16 0.13 0.09 0.07 0.05 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 Total average cost covering water tariff USD/m3 0.77 0.73 0.56 0.55 0.54 0.57 0.56 0.58 0.61 0.61 0.61 0.60 0.59 0.58 0.60 0.60 0.58 0.57 Total average cost covering W&S tariff USD/m3 1.09 1.03 0.77 0.76 0.75 0.81 0.81 0.83 0.89 0.88 0.88 0.86 0.84 0.84 0.86 0.86 0.84 0.81 Calculated sewerage charges % 0.32 0.30 0.21 0.21 0.21 0.24 0.25 0.25 0.28 0.27 0.27 0.26 0.25 0.26 0.26 0.26 0.26 0.24 Calculated proportion of sewerage of Water 42% 41% 38% 38% 39% 42% 45% 43% 46% 44% 44% 43% 42% 45% 43% 43% 45% 42% Water tariff used in Fin Model 0% 1.45 1.35 1.20 1.15 1.15 1.15 1.15 1.15 1.10 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 Unit Costs Chemicals UNIT The unit cost of Borehole Chlorine USD/kg chemicals is 4 calculated for Dosing rate g/m3 5 two scenarios, Costs/m3 USD/m3 (a) for surface 0.02 Alum USD/kg water intakes Dosing rate g/m3 and (b) Costs/m3 USD/m3 borehole Lime USD/kg abstraction and the relevant Dosing rate g/m3 3 cost is applied Costs/m3 USD/m to the unit of Total Unit Chemical Cost USD/m3 water produced 0.0200 Power UNIT Long-Term Volume m /h 3 For details on 4,633 Pumping head H Q & h refer to 117 Pump efficiency % i t b 0.72 KWh KW/h Both the 752.8625 3 Power consumption KW/m midium and 0.1625 Cost/ KWh USD/KWh long term unit 0.5 Cost per m3 USD/m3 cost 0.0813 Explanation notes for referenced items above: [1] Water demand projected for 2013, 2020 and 2030 representing three milestones. The periods between these were interpolated on a linear basis. [2] The peak seasonal factor and peak demand are calculated as a function of average demand and used to ascertain the production surplus/(deficit). [3] Production losses attributable to backwash, flushing and other cleaning operations are assumed to increase the abstraction of raw water. [4] The water produced is the volume of water after production losses equal to either the demand or the production capacity, whichever smaller. [5] The proportion of bulk water available may be less than 100 % in the event that bulk water supply is practically throttled or cannot be produced. [6] If the entity does not produce (adequate) water and bulk water is available (even if only limited), the assumed volumes of water bought are calculated considering demand, own production and proportional available. [7] The volume of water available is the addition of water produced plus water bought in bulk (if any). [8] Details on funding of investments are provided in a separate table (see Investment Assets Tab).. [9] Depreciation is based on replacement value and economic life. In view of recent financial performance it is not realistic to bring these calculated costs to account, thus, the depreciation for existing assets was set to nil through entry [10] As with existing assets, the full annual value of depreciation of new assets is high and realistically not a priority and therefore revised downward. [11] Bulk water costs are calculated separately; considering abstraction, power, chemicals, financial, fixed and maintenance costs and compared with current levels. [12] Abstraction costs are gradually adjusted from current payment levels to required levels. [13] Unit power costs for pumping are calculated on the basis of current and anticipated Q & h values and pumping times as detailed in a separate table (see Pumping tab). [14] Unit chemical costs are calculated for surface water and borehole abstraction and applied accordingly; they include treatment chemicals (aluminium sulphate, lime) and disinfection (chlorine) as detailed in a separate table below the [15] Personnel costs are based on separately calculated (see HR tab) number of staff, assumed scales, allowances, contribution to pension, etc. and a % allocation to water and sanitation to take into account recharges for other [16] The calculation of transport costs is based on the number of units, average annual distance travelled/hours worked, fuel consumption per km/hr. and fuel price. [17] Other administration costs including insurance, external professional fees (e.g. audit), office stationery, office utilities, etc. are estimated as a proportion of employment costs. [18] Desired and ideal maintenance costs are calculated for both existing and future assets, but are high and from past experience not realistic to apply the full cost. Therefore, an adjustment of the desired to the realistic level is carried Gauff Ingenieure 2 of 4 Greater Harare Water and Sanitation Investment Plan Appendix 11 Harare HARARE Detailed revenue calculations ITEM ASSUMPTION/ NOTE REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 NOTE VALUE WATER VOLUMES Water Produced From cost table 000 m3 162,060 160,053 201,169 199,059 196,949 194,839 189,078 186,968 191,610 196,252 200,895 205,537 210,179 214,822 219,464 224,106 228,749 233,391 Water bought in bulk From cost table 000 m3 - - - - - - - - - - - - - - - - - - Demand for bulk water sales 000 m3 38,015 37,411 38,814 40,217 41,620 43,023 40,776 42,180 43,269 44,359 45,449 46,538 47,628 48,718 49,808 50,897 51,987 53,077 Assumed proportion of bulk water supplied [1] % 50% 55% 60% 65% 70% 75% 80% 85% 90% 95% 100% 100% 100% 100% 100% 100% 100% 100% Water sold in bulk Sum of satellites [1] 000 m3 19,008 20,576 23,288 26,141 29,134 32,267 32,621 35,853 38,942 42,141 45,449 46,538 47,628 48,718 49,808 50,897 51,987 53,077 Total Water available 000 m3 143,052 139,477 177,881 172,918 167,815 162,571 156,457 151,115 152,668 154,111 155,446 158,999 162,551 166,104 169,656 173,209 176,762 180,314 Non-Revenue Water (NRW) [2] % 58% 54% 50% 46% 42% 38% 34% 30% 29% 28% 27% 26% 25% 24% 23% 22% 21% 20% NRW reduction [2] % 4.0% 4.0% 4.0% 4.0% 4.0% 4.0% 4.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% Total volumes billed incl. [sold] bulk 000 m3 79,090 84,735 112,229 119,517 126,467 133,062 135,883 141,633 147,336 153,101 158,924 164,197 169,542 174,957 180,443 186,000 191,629 197,328 Total Volumes Billed [Sold] excl. bulk [3] 000 m3 60,082 64,159 88,940 93,376 97,333 100,794 103,262 105,781 108,394 110,960 113,476 117,659 121,913 126,239 130,635 135,103 139,642 144,251 Number of Accounts Based on metering program 000 No. 262 274 275 287 299 311 322 334 346 357 369 381 392 404 416 428 439 451 REVENUE STREAMS 3 Assumed tariff for Bulk Supply (if any) Keep current levels [4] USD/m 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 3 Combined average retail tariff (simplified) Water + Sewer incl fixed [5] USD/m 1.45 1.35 1.20 1.15 1.15 1.15 1.15 1.15 1.10 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 Calculated Bulk Sales 000 USD 7,603 8,230 9,315 10,456 11,654 12,907 13,048 14,341 15,577 16,856 18,179 18,615 19,051 19,487 19,923 20,359 20,795 21,231 Calculated Combined Retail Sales 000 USD 87,119 86,615 106,729 107,382 111,932 115,913 118,751 121,648 119,234 99,864 102,128 105,893 109,722 113,615 117,572 121,593 125,678 129,826 Total Billing for Water & Sewerage 000 USD 94,722 94,845 116,044 117,839 123,586 128,820 131,799 135,989 134,810 116,721 120,308 124,508 128,773 133,102 137,495 141,952 146,472 151,057 Collection Efficiency [6] % 41% 50% 60% 70% 80% 85% 90% 95% 95% 95% 95% 95% 95% 95% 95% 95% 95% 95% Collections from Water & Sewerage 000 USD 38,890 47,423 69,626 82,487 98,869 109,497 118,619 129,189 128,070 110,885 114,292 118,283 122,335 126,447 130,620 134,854 139,149 143,504 Other revenue (recovery of old debt) % of 3 year debt 5.0% [7] 000 USD 2,315 2,555 2,792 2,371 2,321 1,768 1,236 966 659 340 337 292 301 311 322 333 344 Total revenue collection 000 USD 38,890 49,738 72,181 85,279 101,240 111,818 120,387 130,425 129,036 111,544 114,632 118,620 122,626 126,748 130,931 135,176 139,482 143,848 Explanation notes for referenced items above: [1] It is not anticipated that Harare will be able to fully cover water demand until investments are made and efficiencies have improved. To reflect this condition, a proportion of bulk supply reflected as revenue for [2] NRW is aligned to curredntly reported levels and deemed to improve with reforms and future investments, whereby milestone targets are set for 2020 and 2030. [3] Volumes of water sold bulk and excl bulk is based on bulk sold before NRW and retail after NRW at different tariffs [4] While detailed bulk tariff calculations are provided below the main cost table, the current existing bulk tariff is applied throughout. [5] The combined tariff includes water, sewerage and any fixed charge component applied as an overall unit tariff. [6] The collection efficiency in the base year appears to be an outlier compared to previous years. Future collection efficiencies are based on agreed milestones. [7] A proportion of old debt (3-years old) is assumed to be collected. 47,423 Gauff Ingenieure 3 of 4 Greater Harare Water and Sanitation Investment Plan Appendix 11 Harare HARARE INCOME STATEMENT ITEM REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Income Streams Bulk sales 000 USD 7,603 8,230 9,315 10,456 11,654 12,907 13,048 14,341 15,577 16,856 18,179 18,615 19,051 19,487 19,923 20,359 20,795 21,231 Combined Water & Sewerage 000 USD 87,119 86,615 106,729 107,382 111,932 115,913 118,751 121,648 119,234 99,864 102,128 105,893 109,722 113,615 117,572 121,593 125,678 129,826 Sub-Total 000 USD 94,722 94,845 116,044 117,839 123,586 128,820 131,799 135,989 134,810 116,721 120,308 124,508 128,773 133,102 137,495 141,952 146,472 151,057 Cost Streams [=Expenditure] Operation - Fixed Costs 000 USD 27,741 29,680 28,083 31,580 31,580 35,641 35,641 35,641 35,641 35,641 35,641 35,641 35,641 35,641 35,641 35,641 35,641 35,641 Operation - Variable 000 USD 19,778 19,533 25,184 24,920 25,276 26,233 26,648 29,606 31,549 33,549 35,609 37,726 39,903 42,137 43,048 43,958 44,869 45,780 Maintenance 000 USD 2,356 2,601 3,945 5,301 7,221 9,377 11,491 13,858 18,333 18,616 18,930 19,400 19,871 16,991 18,270 18,933 19,279 19,449 Capital Charges (INTEREST ONLY) 000 USD - 4,536 4,636 4,731 7,881 9,533 10,655 11,661 12,450 10,893 10,244 9,595 8,945 12,281 15,417 17,004 15,825 14,645 Sub-Total 000 USD 49,875 56,349 61,848 66,532 71,958 80,784 84,436 90,766 97,973 98,700 100,423 102,362 104,359 107,050 112,376 115,537 115,614 115,515 Surplus/(Deficit) 000 USD 44,847 38,496 54,196 51,307 51,628 48,036 47,364 45,223 36,838 18,021 19,884 22,146 24,414 26,052 25,119 26,415 30,858 35,542 ADJUSTED INCOME STATEMENT Income Total Income 000 USD 94,722 94,845 116,044 117,839 123,586 128,820 131,799 135,989 134,810 116,721 120,308 124,508 128,773 133,102 137,495 141,952 146,472 151,057 Expenditure Total Expenses 000 USD 49,875 56,349 61,848 66,532 71,958 80,784 84,436 90,766 97,973 98,700 100,423 102,362 104,359 107,050 112,376 115,537 115,614 115,515 Provision for debt write-off [1] 000 USD 27,916 47,423 46,418 35,352 24,717 19,323 13,180 6,799 6,741 5,836 6,015 6,225 6,439 6,655 6,875 7,098 7,324 7,553 Depreciation [2] 000 USD - 169 388 438 998 1,541 1,939 3,507 5,372 6,933 8,641 9,355 9,609 11,148 12,694 13,281 13,525 13,899 Total Expenses incl. Depreciation 000 USD 77,791 103,941 108,654 102,321 97,673 101,648 99,555 101,073 110,085 111,469 115,079 117,943 120,407 124,853 131,945 135,915 136,463 136,967 Adjusted Surplus/(Deficit) 000 USD 16,931 (9,095) 7,390 15,517 25,913 27,172 32,244 34,916 24,726 5,252 5,228 6,566 8,367 8,250 5,550 6,037 10,009 14,090 CASH FLOW STATEMENT ITEM REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Cash Flow from Operating Activities Profit/(loss) from income statement 000 USD 16,931 (9,095) 7,390 15,517 25,913 27,172 32,244 34,916 24,726 5,252 5,228 6,566 8,367 8,250 5,550 6,037 10,009 14,090 Adjust for non-cash items 000 USD Depreciation [2] 000 USD 0 169 388 438 998 1,541 1,939 3,507 5,372 6,933 8,641 9,355 9,609 11,148 12,694 13,281 13,525 13,899 Provision for debt write-off 27,916 47,423 46,418 35,352 24,717 19,323 13,180 6,799 6,741 5,836 6,015 6,225 6,439 6,655 6,875 7,098 7,324 7,553 Net adjusted income for the year 000 USD 44,847 38,496 54,196 51,307 51,628 48,036 47,364 45,223 36,838 18,021 19,884 22,146 24,414 26,052 25,119 26,415 30,858 35,542 Adjust for Change in Working Capital (Increase)/Decrease in debtors [3] 000 USD (55,832) (47,423) (46,418) (35,352) (24,717) (19,323) (13,180) (6,799) (6,741) (5,836) (6,015) (6,225) (6,439) (6,655) (6,875) (7,098) (7,324) (7,553) Partial debt recovery [4] 000 USD 0 2,315 2,555 2,792 2,371 2,321 1,768 1,236 966 659 340 337 292 301 311 322 333 344 Increase/(Decrease) in creditors [5] 000 USD 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Net change in working capital 000 USD (55,832) (45,108) (43,863) (32,560) (22,346) (17,002) (11,412) (5,564) (5,774) (5,177) (5,675) (5,888) (6,147) (6,354) (6,563) (6,776) (6,991) (7,209) Cash Flow from Investment Activities Repayment of principal 000 USD 0 0 (100) (200) (29,280) (32,007) (34,341) (36,675) (38,909) (12,989) (12,989) (12,989) (12,989) (16,974) (20,960) (23,595) (23,595) (23,595) Net change generaged by/(used in investment activit 000 USD 0 0 (100) (200) (29,280) (32,007) (34,341) (36,675) (38,909) (12,989) (12,989) (12,989) (12,989) (16,974) (20,960) (23,595) (23,595) (23,595) Cash Flow Net increase/(decrease) in cash & equiv. 000 USD (10,985) (6,611) 10,233 18,547 2 (973) 1,610 2,984 (7,846) (145) 1,220 3,269 5,278 2,724 (2,404) (3,955) 273 4,739 Cash & cash equiv. at beginning of year 000 USD 0 (10,985) (17,596) (7,363) 11,183 11,185 10,212 11,822 14,806 6,961 6,815 8,035 11,304 16,582 19,305 16,901 12,946 13,219 Cash & cash equivalents at end of year 000 USD (10,985) (17,596) (7,363) 11,183 11,185 10,212 11,822 14,806 6,961 6,815 8,035 11,304 16,582 19,305 16,901 12,946 13,219 17,957 BALANCE SHEET (Simplified) ITEM REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Assets Fixed Assets [6] Existing Plant & equipment 772,845 742,110 711,374 680,638 649,902 619,166 588,431 558,362 528,453 498,543 468,647 438,751 408,855 378,959 357,381 335,804 314,227 292,650 Future Plant & equipment 21,225 45,949 70,173 211,212 344,680 458,441 568,216 684,506 708,269 733,257 771,060 808,018 999,257 1,185,341 1,305,711 1,317,576 1,330,491 Total Fixed Assets 772,845 763,334 757,323 750,811 861,114 963,846 1,046,872 1,126,578 1,212,959 1,206,813 1,201,904 1,209,811 1,216,873 1,378,216 1,542,722 1,641,515 1,631,803 1,623,141 Current Assets & Liabilities Short term assets (cash) [7] (10,985) (17,596) (7,363) 11,183 11,185 10,212 11,822 14,806 6,961 6,815 8,035 11,304 16,582 19,305 16,901 12,946 13,219 17,957 Debtors [8] 23,680 23,711 29,011 29,460 30,897 32,205 32,950 33,997 33,703 29,180 30,077 31,127 32,193 33,276 34,374 35,488 36,618 37,764 Creditors [9] (4,479) (4,529) (5,651) (5,930) (6,309) (6,952) (7,373) (8,261) (9,330) (9,711) (10,106) (10,538) (10,979) (10,871) (11,236) (11,498) (11,708) (11,888) Net Current Assets 8,216 1,586 15,997 34,713 35,773 35,466 37,399 40,543 31,333 26,285 28,006 31,893 37,796 41,710 40,039 36,935 38,129 43,834 Total Assets 781,062 764,921 773,320 785,524 896,887 999,312 1,084,271 1,167,121 1,244,292 1,233,097 1,229,910 1,241,705 1,254,670 1,419,926 1,582,761 1,678,450 1,669,932 1,666,974 Equity & Liabilites Equity [10] 781,062 635,321 641,820 652,224 729,660 809,554 882,175 955,021 1,026,422 1,028,217 1,038,019 1,062,802 1,088,757 1,191,282 1,295,370 1,361,958 1,377,034 1,397,671 Long Term liabilities [11] 0 129,600 131,500 133,300 167,227 189,758 202,096 212,100 217,870 204,881 191,891 178,902 165,913 228,644 287,390 316,492 292,898 269,303 Total Equity & Liabilities 781,062 764,921 773,320 785,524 896,887 999,312 1,084,271 1,167,121 1,244,292 1,233,097 1,229,910 1,241,705 1,254,670 1,419,926 1,582,761 1,678,450 1,669,932 1,666,974 notes for referenced items above: [1] Provisions to write off bad debt was set at 50 % in the base year and 100 % thereafter to gradually introduce the concept which does not appear to be ccarried out currently. [2] Depreciation for both existing and new assets is reflected here, as calculated in existing and Investment assets tabs and allocated as per the main cost table under the Cost tab. [3] Debtors are calculated as the difference between billing and cash collections for the respective year. [4] Partial debt recovery is calculated in the revenue table based on a small proportion of 3-year old debt recovered as cash collections. [5] With past history of deficit cash flow funded in part from creditors the entity has become uncreditworthy and future cash flow is based on a strictly cash on delivery basis, i.e. costs = expenditure. [6] The value of fixed assets is returned as the depreciated residual value of existing and investment assets calculated in the respective existing assets and investment assets tabs. [7] Accumulated cash reserves/(deficit) [8] Debtors as defined under note [3] [9] Asume two months worth of fixed costs (except personnel), variable and maintenance. [10] Balance of total assets and (less) long term liabilities. [11] The balance on loans is represented as long term liabilities. Gauff Ingenieure 4 of 4 Greater Harare Water Sanitation Investment Plan Appendix II Greater Harare CHITUNGWIZA Detailed Cost Calculations ITEM ASSUMPTION/ NOTE REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 NOTE VALUE VOLUMES 3 Average water demand [1] 000 m 19,881 19,883 19,884 19,886 19,887 19,889 19,890 19,892 20,402 20,912 21,422 21,932 22,442 22,952 23,462 23,972 24,482 24,992 3 Peak water demand Seasonal factor 1.25 [2] 000 m 24,851 24,853 24,855 24,857 24,859 24,861 24,863 24,865 25,503 26,140 26,778 27,415 28,053 28,690 29,328 29,965 30,603 31,240 Production Capacity 000 m3 - - - - - - - - - - - - - - - - - - Treatment surplus/(deficit) [2] (24,851) (24,853) (24,855) (24,857) (24,859) (24,861) (24,863) (24,865) (25,503) (26,140) (26,778) (27,415) (28,053) (28,690) (29,328) (29,965) (30,603) (31,240) 3 Raw Water [3] 000 m - - - - - - - - - - - - - - - - - - Assumed Production losses [3] % 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 3 Water Produced [4] 000 m - - - - - - - - - - - - - - - - - - Proportion of bulk water available [5] % 25% 30% 35% 40% 45% 50% 80% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 3 Water bought in bulk Bulk available? (y/n) Y [6] 000 m 4,970 5,965 6,959 7,954 8,949 9,944 15,912 19,892 20,402 20,912 21,422 21,932 22,442 22,952 23,462 23,972 24,482 24,992 3 Water available [7] 000 m 4,971 5,965 6,960 7,955 8,950 9,945 15,913 19,893 20,403 20,913 21,423 21,933 22,443 22,953 23,463 23,973 24,483 24,993 COST STREAMS CAPITAL COSTS Disbursements on capital investments [8] Disbursements from GHWSSIP grant 000 USD - - 764 - 14,801 14,369 - - - - - - - 4,157 4,157 - - - Disbursements from GH WSSIP concessionary loan 000 USD - - - - - - - - - - - - - - - - - - Disbursements from GHWSSIP loan 000 USD - - 764 - 14,801 14,369 - - - - - - - 4,157 4,157 - - - Disbursements from own resources 000 USD - - - - - - - - 193 193 193 13,185 193 193 193 801 801 801 Disbursements from external/private invest. 000 USD - 1,789 1,789 1,789 1,789 1,789 1,789 1,789 5,654 5,654 5,654 5,654 5,654 5,654 5,654 5,654 5,654 5,654 Disbursements from CMEC 000 USD - - - - - - - - - - - - - - - - - - Disbursements from ZimFund grant 000 USD - 1,500 - - - - - - - - - - - - - - - - Total Disbursements for investments 000 USD - 3,289 3,316 1,789 31,390 30,527 1,789 1,789 5,846 5,846 5,846 18,838 5,846 14,160 14,160 6,455 6,455 6,455 Repayments of principal repay period Repayment of GHWSSIP loan principal 0 yr grace, repay 20 years 000 USD - - 38 38 778 1,497 1,497 1,497 1,497 1,497 1,497 1,497 1,497 1,705 1,912 1,912 1,912 1,912 Repayment of CMEC principal 3 yr grace, repay in 5 years 000 USD - - - - - - - - Total repayment of principal 000 USD - - 38 38 778 1,497 1,497 1,497 1,497 1,497 1,497 1,497 1,497 1,705 1,912 1,912 1,912 1,912 Balance on loans Balance of concessionary loan principal year end 000 USD - - - - - - - - - - - - - - - - - - Balance of GHWSSIP loan principal year end 000 USD - - 725 687 14,709 27,582 26,085 24,589 23,092 21,595 20,099 18,602 17,105 19,558 21,802 19,890 17,978 16,065 Balance of CMEC loan year end 000 USD - - - - - - - - - - - - - - - - - - Total balance on loans year end 000 USD - - 725 687 14,709 27,582 26,085 24,589 23,092 21,595 20,099 18,602 17,105 19,558 21,802 19,890 17,978 16,065 Interest on Loans Interest on existing loans 000 USD Interest on GHWSSIP loan Interest rate 5.0% p.a. 000 USD - - 38 36 774 1,454 1,379 1,304 1,229 1,155 1,080 1,005 930 1,063 1,186 1,090 995 899 Interest on CMEC loan Interest rate 3.5% p.a. 000 USD - - - - - - - - - - - - - - - - - - Total interest on loans 000 USD - - 38 36 774 1,454 1,379 1,304 1,229 1,155 1,080 1,005 930 1,063 1,186 1,090 995 899 Depreciation Depreciation on existing assets Alloc of calc depr. 0% [9] 000 USD - - - - - - - - - - - - - - - - - - Assumed proportion of calc depreciation Gradual increase [10] % 5% 10% 10% 10% 10% 10% 15% 20% 25% 30% 30% 30% 30% 30% 30% 30% 30% Depreciation on Capital Investment [10] 000 USD 3 14 18 130 236 240 366 517 677 841 1,214 1,064 1,002 1,110 1,164 1,201 1,237 Sub-Total Capital Costs 000 USD - 6,581 8,249 5,118 95,433 122,354 61,739 58,722 63,845 60,863 57,883 81,098 51,821 73,974 79,232 59,859 55,880 51,901 OPERATION - Variable Bulk water N/A 3 Assumed unit cost for bulk water N/A [11] USD/m 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 Annual bulk water cost N/A 000 USD 1,988 2,386 2,784 3,182 3,580 3,978 6,365 7,957 8,161 8,365 8,569 8,773 8,977 9,181 9,385 9,589 9,793 9,997 Abstraction Assumed unit abstraction cost inflation 0% p.a. USD/m3 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 Adjust (actual/desired level) on existing gradual [12] % 0% 0% 5% 5% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 100% 100% 100% 100% Annual abstraction cost 000 USD - - - - - - - - - - - - - - - - - - Power 3 Assumed unit power cost Inflation 0% p.a. [13] USD/m 0.07 0.07 0.07 0.07 0.07 0.07 0.07 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 Annual power cost 000 USD - - - - - - - - - - - - - - - - - - Chemical 3 Assumed unit chemical cost Inflation p.a. 0% p.a. [14] USD/m 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 Annual chemical cost 000 USD - - - - - - - - - - - - - - - - - - Sub-Total Variable Costs 000 USD 1,988 2,386 2,784 3,182 3,580 3,978 6,365 7,957 8,161 8,365 8,569 8,773 8,977 9,181 9,385 9,589 9,793 9,997 OPERATION - Fixed Personnel [15] 000 USD 1,390 1,390 2,079 2,339 2,339 2,923 2,923 2,923 2,923 2,923 2,923 2,923 2,923 2,923 2,923 2,923 2,923 2,923 Transport [16] Number of vehicles No. 2 2 2 2 5 5 5 5 5 5 5 5 5 5 5 5 5 5 Number of Motor cycles No 2 2 2 2 10 10 10 10 10 10 10 10 10 10 10 10 10 10 Number of Trucks No 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Assumed unit fuel cost 0% p.a. USD/litre 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 Annual vehicle operating cost 000 USD 9 9 9 9 28 28 28 28 28 28 28 28 28 28 28 28 28 28 Other administration costs % of personnel 20% [17] 000 USD 278 278 416 468 468 585 585 585 585 585 585 585 585 585 585 585 585 585 Sub-Total Fixed Costs 000 USD 1,677 1,677 2,504 2,816 2,835 3,536 3,536 3,536 3,536 3,536 3,536 3,536 3,536 3,536 3,536 3,536 3,536 3,536 MAINTENANCE Adjust (actual/desired level) on maintenancGradual increase [18] % 10% 10% 15% 20% 25% 30% 35% 40% 50% 50% 50% 50% 50% 50% 50% 50% 50% 50% Existing assets 000 USD 303 303 427 570 712 854 997 1,139 1,424 1,424 1,424 1,424 1,424 1,424 1,424 825 825 825 GHWSSIP Investments 000 USD - 3 9 17 122 265 319 375 512 555 599 777 820 904 989 1,038 1,088 1,138 Other investments 000 USD - 2 3 5 6 7 8 9 11 11 11 11 11 11 11 11 11 11 Sub-Total Maintenance 000 USD 303 308 440 591 839 1,127 1,324 1,523 1,947 1,991 2,034 2,212 2,255 2,340 2,424 1,875 1,924 1,974 Gauff Ingenieure 1 of 4 Greater Harare Water Sanitation Investment Plan Appendix II Greater Harare Average Unit Bulk Cost Calculation ASSUMPTION/ NOTE REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 NOTE VALUE Assumed unit abstraction cost USD/m3 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 Assumed unit power cost USD/m3 0.0701389 0.0701389 0.0701389 0.0701389 0.0701389 0.0701389 0.0701389 0.08125 0.08125 0.08125 0.08125 0.08125 0.08125 0.08125 0.08125 0.08125 0.08125 0.08125 Assumed unit chemical cost USD/m3 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 Proportion of Financial costs 25% USD/m3 - 0.0003 0.0038 0.0032 0.0436 0.0685 0.0385 0.0300 0.0301 0.0304 0.0307 0.0342 0.0296 0.0296 0.0318 0.0301 0.0284 0.0267 Proportion of fixed costs 25% USD/m3 0.2008 0.1528 0.1799 0.1639 0.1366 0.1434 0.0842 0.0635 0.0610 0.0587 0.0565 0.0545 0.0525 0.0507 0.0489 0.0473 0.0457 0.0442 Proportion of Maintenance costs 30% USD/m3 0.0435 0.0336 0.0379 0.0413 0.0485 0.0548 0.0378 0.0328 0.0403 0.0397 0.0390 0.0409 0.0402 0.0402 0.0403 0.0301 0.0298 0.0296 Sub-total unit cost for water Average 0.35 USD/m3 0.43 0.37 0.40 0.39 0.41 0.45 0.34 0.32 0.32 0.32 0.32 0.32 0.32 0.31 0.31 0.30 0.30 0.29 Average Unit Retail Cost Calculation ASSUMPTION/ NOTE REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 NOTE VALUE Assumed unit cost for bulk water USD/m3 0.4000 0.4000 0.4000 0.4000 0.4000 0.4000 0.4000 0.4000 0.4000 0.4000 0.4000 0.4000 0.4000 0.4000 0.4000 0.4000 0.4000 0.4000 Assumed unit abstraction cost USD/m3 - - - - - - - - - - - - - - - - - - Assumed unit power cost USD/m3 - - - - - - - - - - - - - - - - - - Assumed unit chemical cost USD/m3 - - - - - - - - - - - - - - - - - - 3 Proportion of Financial costs 60% USD/m - 0.0008 0.0090 0.0076 0.1045 0.1645 0.0925 0.0720 0.0723 0.0730 0.0737 0.0820 0.0711 0.0710 0.0763 0.0723 0.0681 0.0641 Proportion of fixed costs 60% USD/m3 0.4819 0.3667 0.4318 0.3934 0.3277 0.3441 0.2020 0.1524 0.1465 0.1409 0.1357 0.1307 0.1260 0.1216 0.1174 0.1135 0.1097 0.1061 Proportion of Maintenance costs 60% USD/m3 0.0870 0.0673 0.0758 0.0826 0.0970 0.1096 0.0756 0.0656 0.0807 0.0793 0.0780 0.0818 0.0804 0.0805 0.0805 0.0602 0.0597 0.0592 Sub-total unit cost for water Average 0.76 USD/m3 0.97 0.83 0.92 0.88 0.93 1.02 0.77 0.69 0.70 0.69 0.69 0.69 0.68 0.67 0.67 0.65 0.64 0.63 Adjustment for collection losses USD/m3 0.24 0.21 0.23 0.22 0.19 0.15 0.08 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 Total average cost covering water tariff USD/m3 1.21 1.04 1.15 1.10 1.12 1.17 0.85 0.72 0.73 0.73 0.72 0.73 0.71 0.71 0.71 0.68 0.67 0.66 Total average cost covering W&S tariff USD/m3 1.69 1.41 1.58 1.51 1.54 1.64 1.12 0.93 0.94 0.93 0.92 0.94 0.91 0.90 0.90 0.85 0.84 0.82 Calculated sewerage charges % 0.48 0.37 0.43 0.41 0.42 0.47 0.27 0.21 0.21 0.20 0.20 0.21 0.20 0.19 0.19 0.17 0.17 0.16 Calculated proportion of sewerage of Water 40% 36% 37% 37% 38% 40% 32% 29% 29% 27% 28% 29% 28% 27% 27% 25% 25% 24% Water tariff used in Fin Model 0% 1.45 1.35 1.20 1.15 1.15 1.15 1.15 1.15 1.10 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 Unit Costs Chemicals UNIT The unit cost of Borehole Chlorine USD/kg chemicals is 4 calculated for Dosing rate g/m3 5 two scenarios, Costs/m3 USD/m3 (a) for surface 0.02 Alum USD/kg water intakes Dosing rate g/m3 and (b) Costs/m3 USD/m3 borehole Lime USD/kg abstraction and the relevant Dosing rate g/m3 3 cost is applied Costs/m3 USD/m to the unit of Total Unit Chemical Cost USD/m3 water produced 0.0200 Power UNIT Long-Term Volume m /h 3 For details on 4,633 Pumping head H Q & h refer to 117 Pump efficiency % i t b 0.72 KWh KW/h Both the 752.8625 3 Power consumption KW/m midium and 0.1625 Cost/ KWh USD/KWh long term unit 0.5 Cost per m3 USD/m3 cost 0.0813 Explanation notes for referenced items above: [1] Water demand projected for 2013, 2020 and 2030 representing three milestones. The periods between these were interpolated on a linear basis. [2] The peak seasonal factor and peak demand are calculated as a function of average demand and used to ascertain the production surplus/(deficit). [3] Production losses attributable to backwash, flushing and other cleaning operations are assumed to increase the abstraction of raw water. [4] The water produced is the volume of water after production losses equal to either the demand or the production capacity, whichever smaller. [5] The proportion of bulk water available may be less than 100 % in the event that bulk water supply is practically throttled or cannot be produced. [6] If the entity does not produce (adequate) water and bulk water is available (even if only limited), the assumed volumes of water bought are calculated considering demand, own production and proportional available. [7] The volume of water available is the addition of water produced plus water bought in bulk (if any). [8] Details on funding of investments are provided in a separate table (see Investment Assets Tab).. [9] Depreciation is based on replacement value and economic life. In view of recent financial performance it is not realistic to bring these calculated costs to account, thus, the depreciation for existing assets was set to nil through entry [10] As with existing assets, the full annual value of depreciation of new assets is high and realistically not a priority and therefore revised downward. [11] Bulk water costs are calculated separately; considering abstraction, power, chemicals, financial, fixed and maintenance costs and compared with current levels. [12] Abstraction costs are gradually adjusted from current payment levels to required levels. [13] Unit power costs for pumping are calculated on the basis of current and anticipated Q & h values and pumping times as detailed in a separate table (see Pumping tab). [14] Unit chemical costs are calculated for surface water and borehole abstraction and applied accordingly; they include treatment chemicals (aluminium sulphate, lime) and disinfection (chlorine) as detailed in a separate table below the [15] Personnel costs are based on separately calculated (see HR tab) number of staff, assumed scales, allowances, contribution to pension, etc. and a % allocation to water and sanitation to take into account recharges for other [16] The calculation of transport costs is based on the number of units, average annual distance travelled/hours worked, fuel consumption per km/hr. and fuel price. [17] Other administration costs including insurance, external professional fees (e.g. audit), office stationery, office utilities, etc. are estimated as a proportion of employment costs. [18] Desired and ideal maintenance costs are calculated for both existing and future assets, but are high and from past experience not realistic to apply the full cost. Therefore, an adjustment of the desired to the realistic level is carried Gauff Ingenieure 2 of 4 Greater Harare Water Sanitation Investment Plan Appendix II Greater Harare CHITUNGWIZA Detailed revenue calculations ITEM ASSUMPTION/ NOTE REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 NOTE VALUE WATER VOLUMES Water Produced From cost table 000 m3 - - - - - - - - - - - - - - - - - - Water bought in bulk From cost table 000 m3 4,970 5,965 6,959 7,954 8,949 9,944 15,912 19,892 20,402 20,912 21,422 21,932 22,442 22,952 23,462 23,972 24,482 24,992 Demand for bulk water sales 000 m3 Assumed proportion of bulk water supplied [1] % 25% 30% 35% 40% 45% 50% 80% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% Water sold in bulk Sum of satellites [1] 000 m3 - - - - - - - - - - - - - - - - - - Total Water available 000 m3 4,970 5,965 6,959 7,954 8,949 9,944 15,912 19,892 20,402 20,912 21,422 21,932 22,442 22,952 23,462 23,972 24,482 24,992 Non-Revenue Water (NRW) [2] % 58% 54% 50% 46% 42% 38% 34% 30% 29% 28% 27% 26% 25% 24% 23% 22% 21% 20% NRW reduction [2] % 4.0% 4.0% 4.0% 4.0% 4.0% 4.0% 4.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% Total volumes billed incl. [sold] bulk 000 m3 2,088 2,744 3,480 4,295 5,191 6,166 10,502 13,924 14,485 15,057 15,638 16,230 16,832 17,444 18,066 18,698 19,341 19,994 Total Volumes Billed [Sold] excl. bulk [3] 000 m3 2,088 2,744 3,480 4,295 5,191 6,166 10,502 13,924 14,485 15,057 15,638 16,230 16,832 17,444 18,066 18,698 19,341 19,994 Number of Accounts Based on metering program 000 No. 358 373 379 394 409 424 439 455 473 491 509 527 545 563 581 599 617 635 REVENUE STREAMS 3 Assumed tariff for Bulk Supply (if any) Keep current levels [4] USD/m 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 3 Combined average retail tariff (simplified) Water + Sewer incl fixed [5] USD/m 1.45 1.35 1.20 1.15 1.15 1.15 1.15 1.15 1.10 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 Calculated Bulk Sales 000 USD - - - - - - - - - - - - - - - - - - Calculated Combined Retail Sales 000 USD 3,027 3,704 4,176 4,940 5,969 7,090 12,077 16,013 15,934 13,551 14,074 14,607 15,148 15,699 16,259 16,828 17,407 17,994 Total Billing for Water & Sewerage 000 USD 3,027 3,704 4,176 4,940 5,969 7,090 12,077 16,013 15,934 13,551 14,074 14,607 15,148 15,699 16,259 16,828 17,407 17,994 Collection Efficiency [6] % 75% 75% 75% 75% 80% 85% 90% 95% 95% 95% 95% 95% 95% 95% 95% 95% 95% 95% Collections from Water & Sewerage 000 USD 2,270 2,778 3,132 3,705 4,775 6,027 10,870 15,212 15,137 12,873 13,371 13,876 14,391 14,914 15,446 15,987 16,536 17,095 Other revenue (recovery of old debt) % of 3 year debt 5.0% [7] 000 USD 2,315 2,555 38 46 52 62 60 53 60 40 40 34 35 37 38 39 41 Total revenue collection 000 USD 2,270 5,093 5,687 3,743 4,822 6,079 10,931 15,272 15,190 12,934 13,411 13,916 14,425 14,949 15,483 16,025 16,576 17,135 Explanation notes for referenced items above: [1] It is not anticipated that Harare will be able to fully cover water demand until investments are made and efficiencies have improved. To reflect this condition, a proportion of bulk supply reflected as revenue for [2] NRW is aligned to curredntly reported levels and deemed to improve with reforms and future investments, whereby milestone targets are set for 2020 and 2030. [3] Volumes of water sold bulk and excl bulk is based on bulk sold before NRW and retail after NRW at different tariffs [4] While detailed bulk tariff calculations are provided below the main cost table, the current existing bulk tariff is applied throughout. [5] The combined tariff includes water, sewerage and any fixed charge component applied as an overall unit tariff. [6] The collection efficiency in the base year appears to be anoutlier compared to previous years. Future collection efficiencies are based o agreed milestones. [7] A proportion of old debt (3-years old) is assumed to be collected. 926 Gauff Ingenieure 3 of 4 Greater Harare Water Sanitation Investment Plan Appendix II Greater Harare CHITUNGWIZA INCOME STATEMENT ITEM REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Income Streams Bulk sales 000 USD - - - - - - - - - - - - - - - - - - Combined Water & Sewerage 000 USD 3,027 3,704 4,176 4,940 5,969 7,090 12,077 16,013 15,934 13,551 14,074 14,607 15,148 15,699 16,259 16,828 17,407 17,994 Sub-Total 000 USD 3,027 3,704 4,176 4,940 5,969 7,090 12,077 16,013 15,934 13,551 14,074 14,607 15,148 15,699 16,259 16,828 17,407 17,994 Cost Streams [=Expenditure] Operation - Fixed Costs 000 USD 1,677 1,677 2,504 2,816 2,835 3,536 3,536 3,536 3,536 3,536 3,536 3,536 3,536 3,536 3,536 3,536 3,536 3,536 Operation - Variable 000 USD 1,988 2,386 2,784 3,182 3,580 3,978 6,365 7,957 8,161 8,365 8,569 8,773 8,977 9,181 9,385 9,589 9,793 9,997 Maintenance 000 USD 303 308 440 591 839 1,127 1,324 1,523 1,947 1,991 2,034 2,212 2,255 2,340 2,424 1,875 1,924 1,974 Capital Charges (INTEREST ONLY) 000 USD - - 38 36 774 1,454 1,379 1,304 1,229 1,155 1,080 1,005 930 1,063 1,186 1,090 995 899 Sub-Total 000 USD 3,968 4,370 5,766 6,625 8,029 10,094 12,603 14,320 14,873 15,046 15,218 15,525 15,698 16,119 16,530 16,089 16,247 16,405 Surplus/(Deficit) 000 USD (941) (666) (1,590) (1,686) (2,059) (3,004) (526) 1,693 1,061 (1,495) (1,144) (918) (549) (420) (271) 739 1,159 1,589 ADJUSTED INCOME STATEMENT Income Total Income 000 USD 3,027 3,704 4,176 4,940 5,969 7,090 12,077 16,013 15,934 13,551 14,074 14,607 15,148 15,699 16,259 16,828 17,407 17,994 Expenditure Total Expenses 000 USD 3,968 4,370 5,766 6,625 8,029 10,094 12,603 14,320 14,873 15,046 15,218 15,525 15,698 16,119 16,530 16,089 16,247 16,405 Provision for debt write-off [1] 000 USD 378 926 1,044 1,235 1,194 1,064 1,208 801 797 678 704 730 757 785 813 841 870 900 Depreciation [2] 000 USD - 4 14 18 130 236 240 366 517 677 841 1,214 1,065 1,003 1,111 1,164 1,201 1,238 Total Expenses incl. Depreciation 000 USD 4,346 5,300 6,824 7,878 9,353 11,394 14,051 15,487 16,187 16,401 16,763 17,470 17,520 17,907 18,454 18,094 18,318 18,543 Adjusted Surplus/(Deficit) 000 USD (1,319) (1,596) (2,648) (2,939) (3,383) (4,304) (1,974) 526 (253) (2,850) (2,689) (2,863) (2,371) (2,208) (2,195) (1,266) (912) (548) CASH FLOW STATEMENT ITEM REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Cash Flow from Operating Activities Profit/(loss) from income statement 000 USD (1,319) (1,596) (2,648) (2,939) (3,383) (4,304) (1,974) 526 (253) (2,850) (2,689) (2,863) (2,371) (2,208) (2,195) (1,266) (912) (548) Adjust for non-cash items 000 USD Depreciation [2] 000 USD 0 4 14 18 130 236 240 366 517 677 841 1,214 1,065 1,003 1,111 1,164 1,201 1,238 Provision for debt write-off 378 926 1,044 1,235 1,194 1,064 1,208 801 797 678 704 730 757 785 813 841 870 900 Net adjusted income for the year 000 USD (941) (666) (1,590) (1,686) (2,059) (3,004) (526) 1,693 1,061 (1,495) (1,144) (918) (549) (420) (271) 739 1,159 1,589 Adjust for Change in Working Capital (Increase)/Decrease in debtors [3] 000 USD (757) (926) (1,044) (1,235) (1,194) (1,064) (1,208) (801) (797) (678) (704) (730) (757) (785) (813) (841) (870) (900) Partial debt recovery [4] 000 USD 0 2,315 2,555 38 46 52 62 60 53 60 40 40 34 35 37 38 39 41 Increase/(Decrease) in creditors [5] 000 USD 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Net change in working capital 000 USD (757) 1,389 1,511 (1,197) (1,148) (1,011) (1,146) (741) (744) (617) (664) (691) (724) (750) (776) (804) (831) (859) Cash Flow from Investment Activities Repayment of principal 000 USD 0 0 (38) (38) (778) (1,497) (1,497) (1,497) (1,497) (1,497) (1,497) (1,497) (1,497) (1,705) (1,912) (1,912) (1,912) (1,912) Net change generaged by/(used in investment activit 000 USD 0 0 (38) (38) (778) (1,497) (1,497) (1,497) (1,497) (1,497) (1,497) (1,497) (1,497) (1,705) (1,912) (1,912) (1,912) (1,912) Cash Flow Net increase/(decrease) in cash & equiv. 000 USD (1,697) 723 (117) (2,921) (3,985) (5,512) (3,168) (544) (1,179) (3,609) (3,304) (3,106) (2,770) (2,874) (2,960) (1,977) (1,584) (1,182) Cash & cash equiv. at beginning of year 000 USD 0 (1,697) (975) (1,092) (4,013) (7,998) (13,509) (16,678) (17,222) (18,402) (22,010) (25,315) (28,420) (31,190) (34,064) (37,024) (39,000) (40,584) Cash & cash equivalents at end of year 000 USD (1,697) (975) (1,092) (4,013) (7,998) (13,509) (16,678) (17,222) (18,402) (22,010) (25,315) (28,420) (31,190) (34,064) (37,024) (39,000) (40,584) (41,767) BALANCE SHEET (Simplified) ITEM REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Assets Fixed Assets [6] Existing Plant & equipment 76,813 73,185 69,557 66,329 63,101 59,873 56,645 53,417 50,189 46,961 43,733 40,505 37,277 34,049 30,821 27,593 25,563 23,533 Future Plant & equipment 1,749 4,954 6,593 36,712 64,905 64,322 63,698 66,991 70,160 73,234 88,055 90,384 101,232 111,721 114,328 116,811 119,171 Total Fixed Assets 76,813 74,934 74,512 72,922 99,813 124,779 120,967 117,116 117,181 117,121 116,967 128,560 127,661 135,282 142,543 141,921 142,374 142,705 Current Assets & Liabilities Short term assets (cash) [7] (1,697) (975) (1,092) (4,013) (7,998) (13,509) (16,678) (17,222) (18,402) (22,010) (25,315) (28,420) (31,190) (34,064) (37,024) (39,000) (40,584) (41,767) Debtors [8] 757 926 1,044 1,235 1,492 1,773 3,019 4,003 3,983 3,388 3,519 3,652 3,787 3,925 4,065 4,207 4,352 4,499 Creditors [9] (430) (497) (608) (708) (819) (953) (1,384) (1,682) (1,787) (1,828) (1,869) (1,933) (1,974) (2,022) (2,070) (2,013) (2,055) (2,097) Net Current Assets (1,370) (545) (656) (3,486) (7,325) (12,690) (15,042) (14,901) (16,205) (20,451) (23,665) (26,701) (29,377) (32,161) (35,029) (36,806) (38,288) (39,365) Total Assets 75,443 74,389 73,856 69,436 92,489 112,089 105,925 102,215 100,976 96,671 93,302 101,859 98,284 103,120 107,514 105,115 104,087 103,339 Equity & Liabilites Equity [10] 75,443 74,389 73,131 68,749 77,779 84,507 79,840 77,626 77,884 75,075 73,203 83,257 81,179 83,563 85,711 85,225 86,109 87,274 Long Term liabilities [11] 0 0 725 687 14,709 27,582 26,085 24,589 23,092 21,595 20,099 18,602 17,105 19,558 21,802 19,890 17,978 16,065 Total Equity & Liabilities 75,443 74,389 73,856 69,436 92,489 112,089 105,925 102,215 100,976 96,671 93,302 101,859 98,284 103,120 107,514 105,115 104,087 103,339 notes for referenced items above: [1] Provisions to write off bad debt was set at 50 % in the base year and 100 % thereafter to gradually introduce the concept which does not appear to be ccarried out currently. [2] Depreciation for both existing and new assets is reflected here, as calculated in existing and Investment assets tabs and allocated as per the main cost table under the Cost tab. [3] Debtors are calculated as the difference between billing and cash collections for the respective year. [4] Partial debt recovery is calculated in the revenue table based on a small proportion of 3-year old debt recovered as cash collections. [5] With past history of deficit cash flow funded in part from creditors the entity has become uncreditworthy and future cash flow is based on a strictly cash on delivery basis, i.e. costs = expenditure. [6] The value of fixed assets is returned as the depreciated residual value of existing and investment assets calculated in the respective existing assets and investment assets tabs. [7] Accumulated cash reserves/(deficit) [8] Debtors as defined under note [3] [9] Asume two months worth of fixed costs (except personnel), variable and maintenance. [10] Balance of total assets and (less) long term liabilities. [11] The balance on loans is represented as long term liabilities. Gauff Ingenieure 4 of 4 Greater Harare Water Sanitation Investment Plan Appendix II Greater Harare EPWORTH Detailed Cost Calculations ITEM ASSUMPTION/ NOTE REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 NOTE VALUE VOLUMES 3 Average water demand [1] 000 m 5,649 6,345 7,041 7,738 8,434 9,130 9,826 10,523 10,581 10,640 10,699 10,757 10,816 10,874 10,933 10,992 11,050 11,109 3 Peak water demand Seasonal factor 1.25 [2] 000 m 7,061 7,931 8,802 9,672 10,542 11,413 12,283 13,153 13,227 13,300 13,373 13,447 13,520 13,593 13,666 13,740 13,813 13,886 Production Capacity 000 m3 - - - - - - - - - - - - - - - - - - Treatment surplus/(deficit) [2] (7,061) (7,931) (8,802) (9,672) (10,542) (11,413) (12,283) (13,153) (13,227) (13,300) (13,373) (13,447) (13,520) (13,593) (13,666) (13,740) (13,813) (13,886) 3 Raw Water [3] 000 m - - - - - - - - - - - - - - - - - - Assumed Production losses [3] % 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 3 Water Produced [4] 000 m - - - - - - - - - - - - - - - - - - Proportion of bulk water available [5] % 25% 30% 35% 40% 45% 50% 80% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 3 Water bought in bulk Bulk available? (y/n) Y [6] 000 m 1,412 1,904 2,464 3,095 3,795 4,565 7,861 10,523 10,581 10,640 10,699 10,757 10,816 10,874 10,933 10,992 11,050 11,109 3 Water available [7] 000 m 1,412 1,904 2,465 3,095 3,796 4,566 7,862 10,524 10,582 10,641 10,700 10,758 10,817 10,875 10,934 10,993 11,051 11,110 COST STREAMS CAPITAL COSTS Disbursements on capital investments [8] Disbursements from GHWSSIP grant 000 USD - 240 60 - 3,941 3,011 - - - - - - - 2,036 2,036 40 - - Disbursements from GH WSSIP concessionary loan 000 USD - - - - - - - - - - - - - - - - - - Disbursements from GHWSSIP loan 000 USD - 240 60 - 3,941 3,011 - - - - - - - 2,036 2,036 40 - - Disbursements from own resources 000 USD - - - - - - - - 63 63 63 3,760 63 63 63 367 367 367 Disbursements from external/private invest. 000 USD - 269 269 269 269 269 269 269 3,374 3,374 3,374 3,374 3,374 3,374 3,374 3,374 3,374 3,374 Disbursements from CMEC 000 USD - - - - - - - - - - - - - - - - - - Disbursements from ZimFund grant 000 USD - - - - - - - - - - - - - - - - - - Total Disbursements for investments 000 USD - 749 389 269 8,150 6,291 269 269 3,437 3,437 3,437 7,135 3,437 7,509 7,509 3,821 3,741 3,741 Repayments of principal repay period Repayment of GHWSSIP loan principal 0 yr grace, repay 20 years 000 USD - 12 15 15 212 363 363 363 363 363 363 363 363 464 566 568 568 568 Repayment of CMEC principal 3 yr grace, repay in 5 years 000 USD - - - - - - - - Total repayment of principal 000 USD - 12 15 15 212 363 363 363 363 363 363 363 363 464 566 568 568 568 Balance on loans Balance of concessionary loan principal year end 000 USD - - - - - - - - - - - - - - - - - - Balance of GHWSSIP loan principal year end 000 USD - 228 273 258 3,986 6,635 6,272 5,910 5,547 5,185 4,822 4,459 4,097 5,669 7,138 6,610 6,042 5,474 Balance of CMEC loan year end 000 USD - - - - - - - - - - - - - - - - - - Total balance on loans year end 000 USD - 228 273 258 3,986 6,635 6,272 5,910 5,547 5,185 4,822 4,459 4,097 5,669 7,138 6,610 6,042 5,474 Interest on Loans Interest on existing loans 000 USD Interest on GHWSSIP loan Interest rate 5.0% p.a. 000 USD - 12 14 14 210 350 332 314 295 277 259 241 223 307 385 359 331 302 Interest on CMEC loan Interest rate 3.5% p.a. 000 USD - - - - - - - - - - - - - - - - - - Total interest on loans 000 USD - 12 14 14 210 350 332 314 295 277 259 241 223 307 385 359 331 302 Depreciation Depreciation on existing assets Alloc of calc depr. 0% [9] 000 USD - - - - - - - - - - - - - - - - - - Assumed proportion of calc depreciation Gradual increase [10] % 5% 10% 10% 10% 10% 10% 15% 20% 25% 30% 30% 30% 30% 30% 30% 30% 30% Depreciation on Capital Investment [10] 000 USD 0 2 3 31 54 55 84 127 176 233 350 302 296 341 372 393 414 Sub-Total Capital Costs 000 USD - 2,003 1,385 1,114 25,148 27,331 14,526 13,794 19,412 18,700 17,995 24,745 16,541 28,194 31,539 23,089 21,757 20,585 OPERATION - Variable Bulk water N/A 3 Assumed unit cost for bulk water N/A [11] USD/m 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 Annual bulk water cost N/A 000 USD 565 761 986 1,238 1,518 1,826 3,144 4,209 4,233 4,256 4,279 4,303 4,326 4,350 4,373 4,397 4,420 4,444 Abstraction Assumed unit abstraction cost inflation 0% p.a. USD/m3 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 Adjust (actual/desired level) on existing gradual [12] % 0% 0% 5% 5% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 100% 100% 100% 100% Annual abstraction cost 000 USD - - - - - - - - - - - - - - - - - - Power 3 Assumed unit power cost Inflation 0% p.a. [13] USD/m 0.07 0.07 0.07 0.07 0.07 0.07 0.07 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 Annual power cost 000 USD - - - - - - - - - - - - - - - - - - Chemical 3 Assumed unit chemical cost Inflation p.a. 0% p.a. [14] USD/m 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 Annual chemical cost 000 USD - - - - - - - - - - - - - - - - - - Sub-Total Variable Costs 000 USD 565 761 986 1,238 1,518 1,826 3,144 4,209 4,233 4,256 4,279 4,303 4,326 4,350 4,373 4,397 4,420 4,444 OPERATION - Fixed Personnel [15] 000 USD 291 291 524 590 590 623 623 623 623 623 623 623 623 623 623 623 623 623 Transport [16] Number of vehicles No. 4 4 4 4 4 4 4 4 4 4 4 4 4 4 Number of Motor cycles No 1 1 1 1 6 6 6 6 6 6 6 6 6 6 6 6 6 6 Number of Trucks No 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Assumed unit fuel cost 0% p.a. USD/litre 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 Annual vehicle operating cost 000 USD 1 1 1 1 22 22 22 22 22 22 22 22 22 22 22 22 22 22 Other administration costs % of personnel 20% [17] 000 USD 58 58 105 118 118 125 125 125 125 125 125 125 125 125 125 125 125 125 Sub-Total Fixed Costs 000 USD 349 349 630 708 729 769 769 769 769 769 769 769 769 769 769 769 769 769 MAINTENANCE Adjust (actual/desired level) on maintenancGradual increase [18] % 10% 10% 15% 20% 25% 30% 35% 40% 50% 50% 50% 50% 50% 50% 50% 50% 50% 50% Existing assets 000 USD 17 17 26 35 44 52 61 70 87 87 87 87 87 87 87 87 87 87 GHWSSIP Investments 000 USD - 0 1 3 25 53 63 74 118 143 168 232 257 306 355 384 412 441 Other investments 000 USD - - - - - - - - - - - - - - - - - - Sub-Total Maintenance 000 USD 17 18 27 37 68 105 125 144 205 230 256 319 344 393 442 471 500 528 Gauff Ingenieure 1 of 4 Greater Harare Water Sanitation Investment Plan Appendix II Greater Harare Average Unit Bulk Cost Calculation ASSUMPTION/ NOTE REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 NOTE VALUE Assumed unit abstraction cost USD/m3 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 Assumed unit power cost USD/m3 0.0701389 0.0701389 0.0701389 0.0701389 0.0701389 0.0701389 0.0701389 0.08125 0.08125 0.08125 0.08125 0.08125 0.08125 0.08125 0.08125 0.08125 0.08125 0.08125 Assumed unit chemical cost USD/m3 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 Proportion of Financial costs 25% USD/m3 - 0.0037 0.0034 0.0025 0.0278 0.0360 0.0187 0.0135 0.0141 0.0148 0.0158 0.0186 0.0162 0.0182 0.0216 0.0213 0.0207 0.0201 Proportion of fixed costs 25% USD/m3 0.1547 0.1036 0.1315 0.1082 0.0841 0.0685 0.0372 0.0261 0.0256 0.0251 0.0246 0.0241 0.0237 0.0233 0.0228 0.0224 0.0220 0.0216 Proportion of Maintenance costs 30% USD/m3 0.0093 0.0064 0.0069 0.0069 0.0094 0.0113 0.0072 0.0059 0.0082 0.0090 0.0098 0.0120 0.0127 0.0143 0.0158 0.0165 0.0172 0.0178 Sub-total unit cost for water Average 0.27 USD/m3 0.35 0.30 0.32 0.30 0.30 0.30 0.25 0.24 0.24 0.24 0.24 0.25 0.25 0.25 0.25 0.25 0.25 0.25 Average Unit Retail Cost Calculation ASSUMPTION/ NOTE REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 NOTE VALUE Assumed unit cost for bulk water USD/m3 0.3999 0.3999 0.3999 0.3999 0.4000 0.4000 0.4000 0.4000 0.4000 0.4000 0.4000 0.4000 0.4000 0.4000 0.4000 0.4000 0.4000 0.4000 Assumed unit abstraction cost USD/m3 - - - - - - - - - - - - - - - - - - Assumed unit power cost USD/m3 - - - - - - - - - - - - - - - - - - Assumed unit chemical cost USD/m3 - - - - - - - - - - - - - - - - - - 3 Proportion of Financial costs 60% USD/m - 0.0088 0.0081 0.0060 0.0668 0.0864 0.0449 0.0324 0.0337 0.0355 0.0378 0.0445 0.0388 0.0438 0.0518 0.0511 0.0497 0.0483 Proportion of fixed costs 60% USD/m3 0.3712 0.2487 0.3155 0.2597 0.2018 0.1645 0.0893 0.0626 0.0614 0.0602 0.0591 0.0580 0.0569 0.0558 0.0548 0.0538 0.0528 0.0519 Proportion of Maintenance costs 60% USD/m3 0.0186 0.0127 0.0138 0.0138 0.0189 0.0226 0.0145 0.0117 0.0164 0.0180 0.0196 0.0241 0.0255 0.0286 0.0315 0.0330 0.0344 0.0357 Sub-total unit cost for water Average 0.59 USD/m3 0.79 0.67 0.74 0.68 0.69 0.67 0.55 0.51 0.51 0.51 0.52 0.53 0.52 0.53 0.54 0.54 0.54 0.54 Adjustment for collection losses USD/m3 0.32 0.37 0.37 0.27 0.21 0.13 0.05 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 Total average cost covering water tariff USD/m3 1.11 1.04 1.11 0.95 0.89 0.81 0.60 0.53 0.54 0.54 0.54 0.55 0.55 0.55 0.56 0.56 0.56 0.56 Total average cost covering W&S tariff USD/m3 1.47 1.32 1.44 1.21 1.14 1.03 0.71 0.61 0.62 0.62 0.62 0.64 0.63 0.64 0.66 0.66 0.66 0.66 Calculated sewerage charges % 0.36 0.28 0.33 0.26 0.25 0.22 0.11 0.08 0.08 0.08 0.08 0.09 0.08 0.09 0.10 0.10 0.10 0.10 Calculated proportion of sewerage of Water 32% 27% 30% 27% 28% 27% 18% 15% 15% 15% 15% 16% 15% 16% 18% 18% 18% 18% Water tariff used in Fin Model 0% 1.45 1.35 1.20 1.15 1.15 1.15 1.15 1.15 1.10 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 Unit Costs Chemicals UNIT The unit cost of Borehole Chlorine USD/kg chemicals is 4 calculated for Dosing rate g/m3 5 two scenarios, Costs/m3 USD/m3 (a) for surface 0.02 Alum USD/kg water intakes Dosing rate g/m3 and (b) Costs/m3 USD/m3 borehole Lime USD/kg abstraction and the relevant Dosing rate g/m3 3 cost is applied Costs/m3 USD/m to the unit of Total Unit Chemical Cost USD/m3 water produced 0.0200 Power UNIT Long-Term Volume m /h 3 For details on 4,633 Pumping head H Q & h refer to 117 Pump efficiency % i t b 0.72 KWh KW/h Both the 752.8625 3 Power consumption KW/m midium and 0.1625 Cost/ KWh USD/KWh long term unit 0.5 Cost per m3 USD/m3 cost 0.0813 Explanation notes for referenced items above: [1] Water demand projected for 2013, 2020 and 2030 representing three milestones. The periods between these were interpolated on a linear basis. [2] The peak seasonal factor and peak demand are calculated as a function of average demand and used to ascertain the production surplus/(deficit). [3] Production losses attributable to backwash, flushing and other cleaning operations are assumed to increase the abstraction of raw water. [4] The water produced is the volume of water after production losses equal to either the demand or the production capacity, whichever smaller. [5] The proportion of bulk water available may be less than 100 % in the event that bulk water supply is practically throttled or cannot be produced. [6] If the entity does not produce (adequate) water and bulk water is available (even if only limited), the assumed volumes of water bought are calculated considering demand, own production and proportional available. [7] The volume of water available is the addition of water produced plus water bought in bulk (if any). [8] Details on funding of investments are provided in a separate table (see Investment Assets Tab).. [9] Depreciation is based on replacement value and economic life. In view of recent financial performance it is not realistic to bring these calculated costs to account, thus, the depreciation for existing assets was set to nil through entry [10] As with existing assets, the full annual value of depreciation of new assets is high and realistically not a priority and therefore revised downward. [11] Bulk water costs are calculated separately; considering abstraction, power, chemicals, financial, fixed and maintenance costs and compared with current levels. [12] Abstraction costs are gradually adjusted from current payment levels to required levels. [13] Unit power costs for pumping are calculated on the basis of current and anticipated Q & h values and pumping times as detailed in a separate table (see Pumping tab). [14] Unit chemical costs are calculated for surface water and borehole abstraction and applied accordingly; they include treatment chemicals (aluminium sulphate, lime) and disinfection (chlorine) as detailed in a separate table below the [15] Personnel costs are based on separately calculated (see HR tab) number of staff, assumed scales, allowances, contribution to pension, etc. and a % allocation to water and sanitation to take into account recharges for other [16] The calculation of transport costs is based on the number of units, average annual distance travelled/hours worked, fuel consumption per km/hr. and fuel price. [17] Other administration costs including insurance, external professional fees (e.g. audit), office stationery, office utilities, etc. are estimated as a proportion of employment costs. [18] Desired and ideal maintenance costs are calculated for both existing and future assets, but are high and from past experience not realistic to apply the full cost. Therefore, an adjustment of the desired to the realistic level is carried Gauff Ingenieure 2 of 4 EPWORTH Detailed revenue calculations ITEM ASSUMPTION/ NOTE REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 NOTE VALUE WATER VOLUMES Water Produced From cost table 000 m3 - - - - - - - - - - - - - - - - - - Water bought in bulk From cost table 000 m3 1,412 1,904 2,464 3,095 3,795 4,565 7,861 10,523 10,581 10,640 10,699 10,757 10,816 10,874 10,933 10,992 11,050 11,109 Demand for bulk water sales 000 m3 Assumed proportion of bulk water supplied [1] % 25% 30% 35% 40% 45% 50% 80% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% Water sold in bulk Sum of satellites [1] 000 m3 - - - - - - - - - - - - - - - - - - Total Water available 000 m3 1,412 1,904 2,464 3,095 3,795 4,565 7,861 10,523 10,581 10,640 10,699 10,757 10,816 10,874 10,933 10,992 11,050 11,109 Non-Revenue Water (NRW) [2] % 60% 56% 51% 47% 43% 39% 34% 30% 29% 28% 27% 26% 25% 24% 23% 22% 21% 20% NRW reduction [2] % 4.3% 4.3% 4.3% 4.3% 4.3% 4.3% 4.3% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% Total volumes billed incl. [sold] bulk 000 m3 565 843 1,197 1,636 2,169 2,804 5,166 7,366 7,513 7,661 7,810 7,960 8,112 8,265 8,418 8,574 8,730 8,887 Total Volumes Billed [Sold] excl. bulk [3] 000 m3 565 843 1,197 1,636 2,169 2,804 5,166 7,366 7,513 7,661 7,810 7,960 8,112 8,265 8,418 8,574 8,730 8,887 Number of Accounts Based on metering program 000 No. 358 373 379 394 409 424 439 455 473 491 509 527 545 563 581 599 617 635 REVENUE STREAMS Assumed tariff for Bulk Supply (if any) Keep current levels [4] USD/m3 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 Combined average retail tariff (simplified) Water + Sewer incl fixed [5] USD/m3 1.45 1.35 1.20 1.15 1.15 1.15 1.15 1.15 1.10 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 Calculated Bulk Sales 000 USD - - - - - - - - - - - - - - - - - - Calculated Combined Retail Sales 000 USD 819 1,138 1,436 1,881 2,494 3,225 5,941 8,471 8,264 6,895 7,029 7,164 7,301 7,438 7,577 7,716 7,857 7,998 Total Billing for Water & Sewerage 000 USD 819 1,138 1,436 1,881 2,494 3,225 5,941 8,471 8,264 6,895 7,029 7,164 7,301 7,438 7,577 7,716 7,857 7,998 Collection Efficiency [6] % 60% 45% 50% 60% 70% 80% 90% 95% 95% 95% 95% 95% 95% 95% 95% 95% 95% 95% Collections from Water & Sewerage 000 USD 491 512 718 1,129 1,746 2,580 5,347 8,047 7,851 6,550 6,678 6,806 6,936 7,066 7,198 7,330 7,464 7,599 Other revenue (recovery of old debt) % of 3 year debt 5.0% [7] 000 USD 2,315 2,555 16 31 36 38 37 32 30 21 21 17 18 18 18 19 19 Total revenue collection 000 USD 491 2,827 3,273 1,145 1,777 2,616 5,384 8,085 7,883 6,580 6,699 6,827 6,953 7,084 7,216 7,349 7,483 7,617 Explanation notes for referenced items above: [1] It is not anticipated that Harare will be able to fully cover water demand until investments are made and efficiencies have improved. To reflect this condition, a proportion of bulk supply reflected as revenue [2] NRW is aligned to curredntly reported levels and deemed to improve with reforms and future investments, whereby milestone targets are set for 2020 and 2030. [3] Volumes of water sold bulk and excl bulk is based on bulk sold before NRW and retail after NRW at different tariffs [4] While detailed bulk tariff calculations are provided below the main cost table, the current existing bulk tariff is applied throughout. [5] The combined tariff includes water, sewerage and any fixed charge component applied as an overall unit tariff. [6] The collection efficiency in the base year appears to be anoutlier compared to previous years. Future collection efficiencies are based o agreed milestones. [7] A proportion of old debt (3-years old) is assumed to be collected. 626 EPWORTH INCOME STATEMENT ITEM REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Income Streams Bulk sales 000 USD - - - - - - - - - - - - - - - - - - Combined Water & Sewerage 000 USD 819 1,138 1,436 1,881 2,494 3,225 5,941 8,471 8,264 6,895 7,029 7,164 7,301 7,438 7,577 7,716 7,857 7,998 Sub-Total 000 USD 819 1,138 1,436 1,881 2,494 3,225 5,941 8,471 8,264 6,895 7,029 7,164 7,301 7,438 7,577 7,716 7,857 7,998 Cost Streams [=Expenditure] Operation - Fixed Costs 000 USD 349 349 630 708 729 769 769 769 769 769 769 769 769 769 769 769 769 769 Operation - Variable 000 USD 565 761 986 1,238 1,518 1,826 3,144 4,209 4,233 4,256 4,279 4,303 4,326 4,350 4,373 4,397 4,420 4,444 Maintenance 000 USD 17 18 27 37 68 105 125 144 205 230 256 319 344 393 442 471 500 528 Capital Charges (INTEREST ONLY) 000 USD - 12 14 14 210 350 332 314 295 277 259 241 223 307 385 359 331 302 Sub-Total 000 USD 932 1,141 1,657 1,997 2,526 3,050 4,370 5,436 5,502 5,533 5,563 5,632 5,663 5,819 5,970 5,996 6,019 6,043 Surplus/(Deficit) 000 USD (113) (3) (221) (116) (32) 175 1,571 3,035 2,762 1,362 1,466 1,532 1,638 1,619 1,607 1,720 1,837 1,956 ADJUSTED INCOME STATEMENT Income Total Income 000 USD 819 1,138 1,436 1,881 2,494 3,225 5,941 8,471 8,264 6,895 7,029 7,164 7,301 7,438 7,577 7,716 7,857 7,998 Expenditure Total Expenses 000 USD 932 1,141 1,657 1,997 2,526 3,050 4,370 5,436 5,502 5,533 5,563 5,632 5,663 5,819 5,970 5,996 6,019 6,043 Provision for debt write-off [1] 000 USD 164 626 718 753 748 645 594 424 413 345 351 358 365 372 379 386 393 400 Depreciation [2] 000 USD - 0 2 3 32 54 55 84 127 177 233 350 302 297 342 372 393 414 Total Expenses incl. Depreciation 000 USD 1,096 1,767 2,377 2,753 3,305 3,750 5,019 5,943 6,043 6,054 6,148 6,340 6,330 6,487 6,690 6,754 6,805 6,857 Adjusted Surplus/(Deficit) 000 USD (277) (629) (941) (871) (811) (525) 922 2,528 2,222 841 881 824 971 951 886 963 1,052 1,142 CASH FLOW STATEMENT ITEM REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Cash Flow from Operating Activities Profit/(loss) from income statement 000 USD (277) (629) (941) (871) (811) (525) 922 2,528 2,222 841 881 824 971 951 886 963 1,052 1,142 Adjust for non-cash items 000 USD Depreciation [2] 000 USD 0 0 2 3 32 54 55 84 127 177 233 350 302 297 342 372 393 414 Provision for debt write-off 164 626 718 753 748 645 594 424 413 345 351 358 365 372 379 386 393 400 Net adjusted income for the year 000 USD (113) (3) (221) (116) (32) 175 1,571 3,035 2,762 1,362 1,466 1,532 1,638 1,619 1,607 1,720 1,837 1,956 Adjust for Change in Working Capital (Increase)/Decrease in debtors [3] 000 USD (328) (626) (718) (753) (748) (645) (594) (424) (413) (345) (351) (358) (365) (372) (379) (386) (393) (400) Partial debt recovery [4] 000 USD 0 2,315 2,555 16 31 36 38 37 32 30 21 21 17 18 18 18 19 19 Increase/(Decrease) in creditors [5] 000 USD 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Net change in working capital 000 USD (328) 1,689 1,837 (736) (717) (609) (556) (386) (381) (315) (330) (338) (348) (354) (361) (368) (374) (381) Cash Flow from Investment Activities Repayment of principal 000 USD 0 (12) (15) (15) (212) (363) (363) (363) (363) (363) (363) (363) (363) (464) (566) (568) (568) (568) Net change generaged by/(used in investment activitie000 USD 0 (12) (15) (15) (212) (363) (363) (363) (363) (363) (363) (363) (363) (464) (566) (568) (568) (568) Cash Flow Net increase/(decrease) in cash & equiv. 000 USD (440) 1,674 1,601 (867) (961) (797) 652 2,286 2,018 684 773 832 928 801 680 784 895 1,007 Cash & cash equiv. at beginning of year 000 USD 0 (440) 1,234 2,835 1,968 1,007 210 862 3,149 5,167 5,851 6,624 7,457 8,384 9,185 9,865 10,649 11,544 Cash & cash equivalents at end of year 000 USD (440) 1,234 2,835 1,968 1,007 210 862 3,149 5,167 5,851 6,624 7,457 8,384 9,185 9,865 10,649 11,544 12,551 BALANCE SHEET (Simplified) ITEM REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Assets Fixed Assets [6] Existing Plant & equipment 6,333 6,145 5,957 5,769 5,581 5,394 5,206 5,018 4,830 4,642 4,454 4,266 4,079 3,891 3,703 3,515 3,327 3,139 Future Plant & equipment 740 1,112 1,355 9,190 14,940 14,659 14,370 17,173 19,904 22,565 28,534 30,965 37,485 43,857 46,440 48,872 51,235 Total Fixed Assets 6,333 6,885 7,069 7,124 14,772 20,334 19,865 19,388 22,003 24,546 27,020 32,801 35,043 41,376 47,560 49,955 52,200 54,374 Current Assets & Liabilities Short term assets (cash) [7] (440) 1,234 2,835 1,968 1,007 210 862 3,149 5,167 5,851 6,624 7,457 8,384 9,185 9,865 10,649 11,544 12,551 Debtors [8] 205 285 359 470 624 806 1,485 2,118 2,066 1,724 1,757 1,791 1,825 1,860 1,894 1,929 1,964 2,000 Creditors [9] (107) (140) (186) (232) (288) (346) (569) (750) (764) (772) (780) (795) (803) (815) (827) (836) (844) (853) Net Current Assets (342) 1,379 3,008 2,206 1,343 670 1,778 4,517 6,469 6,803 7,601 8,453 9,407 10,230 10,932 11,743 12,664 13,698 Total Assets 5,990 8,264 10,077 9,330 16,115 21,004 21,644 23,905 28,472 31,350 34,621 41,254 44,450 51,606 58,492 61,697 64,864 68,072 Equity & Liabilites Equity [10] 5,990 8,036 9,804 9,072 12,128 14,369 15,371 17,995 22,925 26,165 29,799 36,794 40,353 45,937 51,353 55,087 58,822 62,598 Long Term liabilities [11] 0 228 273 258 3,986 6,635 6,272 5,910 5,547 5,185 4,822 4,459 4,097 5,669 7,138 6,610 6,042 5,474 Total Equity & Liabilities 5,990 8,264 10,077 9,330 16,115 21,004 21,644 23,905 28,472 31,350 34,621 41,254 44,450 51,606 58,492 61,697 64,864 68,072 notes for referenced items above: [1] Provisions to write off bad debt was set at 50 % in the base year and 100 % thereafter to gradually introduce the concept which does not appear to be ccarried out currently. [2] Depreciation for both existing and new assets is reflected here, as calculated in existing and Investment assets tabs and allocated as per the main cost table under the Cost tab. [3] Debtors are calculated as the difference between billing and cash collections for the respective year. [4] Partial debt recovery is calculated in the revenue table based on a small proportion of 3-year old debt recovered as cash collections. [5] With past history of deficit cash flow funded in part from creditors the entity has become uncreditworthy and future cash flow is based on a strictly cash on delivery basis, i.e. costs = expenditure. [6] The value of fixed assets is returned as the depreciated residual value of existing and investment assets calculated in the respective existing assets and investment assets tabs. [7] Accumulated cash reserves/(deficit) [8] Debtors as defined under note [3] [9] Asume two months worth of fixed costs (except personnel), variable and maintenance. [10] Balance of total assets and (less) long term liabilities. [11] The balance on loans is represented as long term liabilities. Greater Harare Water Sanitation Investment Plan Appendix II Greater Harare NORTON Detailed Cost Calculations ITEM ASSUMPTION/ NOTE REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 NOTE VALUE VOLUMES 3 Average water demand [1] 000 m 7,311 7,449 7,586 7,724 7,861 7,998 8,136 8,273 8,505 8,736 8,968 9,199 9,431 9,662 9,894 10,125 10,357 10,588 3 Peak water demand Seasonal factor 1.25 [2] 000 m 9,139 9,311 9,483 9,655 9,826 9,998 10,170 10,342 10,631 10,920 11,210 11,499 11,788 12,078 12,367 12,656 12,946 13,235 Production Capacity 000 m3 - - - - - - - - - - - - - - - - - - Treatment surplus/(deficit) [2] (9,139) (9,311) (9,483) (9,655) (9,826) (9,998) (10,170) (10,342) (10,631) (10,920) (11,210) (11,499) (11,788) (12,078) (12,367) (12,656) (12,946) (13,235) 3 Raw Water [3] 000 m - - - - - - - - - - - - - - - - - - Assumed Production losses [3] % 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 3 Water Produced [4] 000 m - - - - - - - - - - - - - - - - - - Proportion of bulk water available [5] % 25% 30% 35% 40% 45% 50% 80% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 3 Water bought in bulk Bulk available? (y/n) Y [6] 000 m 1,828 2,235 2,655 3,089 3,537 3,999 6,509 8,273 8,505 8,736 8,968 9,199 9,431 9,662 9,894 10,125 10,357 10,588 3 Water available [7] 000 m 1,828 2,235 2,656 3,090 3,538 4,000 6,509 8,274 8,506 8,737 8,969 9,200 9,432 9,663 9,895 10,126 10,358 10,589 COST STREAMS CAPITAL COSTS Disbursements on capital investments [8] Disbursements from GHWSSIP grant 000 USD - 240 60 - 8,266 7,717 - - - - - - - 7,717 7,717 - - - Disbursements from GH WSSIP concessionary loan 000 USD - - - - - - - - - - - - - - - - - - Disbursements from GHWSSIP loan 000 USD - 240 60 - 8,266 7,717 - - - - - - - 7,717 7,717 - - - Disbursements from own resources 000 USD - - - - - - - - 177 177 177 2,707 177 177 177 417 417 417 Disbursements from external/private invest. 000 USD - 1,601 1,601 1,601 1,601 1,601 1,601 1,601 2,156 2,156 2,156 2,156 2,156 2,156 2,156 2,156 2,156 2,156 Disbursements from CMEC 000 USD - - - - - - - - - - - - - - - - - - Disbursements from ZimFund grant 000 USD - - - - - - - - - - - - - - - - - - Total Disbursements for investments 000 USD - 2,081 1,721 1,601 18,133 17,035 1,601 1,601 2,333 2,333 2,333 4,864 2,333 17,766 17,766 2,573 2,573 2,573 Repayments of principal repay period Repayment of GHWSSIP loan principal 0 yr grace, repay 20 years 000 USD - 12 15 15 428 814 814 814 814 814 814 814 814 1,200 1,586 1,586 1,586 1,586 Repayment of CMEC principal 3 yr grace, repay in 5 years 000 USD - - - - - - - - Total repayment of principal 000 USD - 12 15 15 428 814 814 814 814 814 814 814 814 1,200 1,586 1,586 1,586 1,586 Balance on loans Balance of concessionary loan principal year end 000 USD - - - - - - - - - - - - - - - - - - Balance of GHWSSIP loan principal year end 000 USD - 228 273 258 8,096 14,999 14,184 13,370 12,556 11,742 10,928 10,114 9,300 15,816 21,947 20,361 18,775 17,189 Balance of CMEC loan year end 000 USD - - - - - - - - - - - - - - - - - - Total balance on loans year end 000 USD - 228 273 258 8,096 14,999 14,184 13,370 12,556 11,742 10,928 10,114 9,300 15,816 21,947 20,361 18,775 17,189 Interest on Loans Interest on existing loans 000 USD Interest on GHWSSIP loan Interest rate 5.0% p.a. 000 USD - 12 14 14 426 791 750 709 669 628 587 546 506 851 1,177 1,097 1,018 939 Interest on CMEC loan Interest rate 3.5% p.a. 000 USD - - - - - - - - - - - - - - - - - - Total interest on loans 000 USD - 12 14 14 426 791 750 709 669 628 587 546 506 851 1,177 1,097 1,018 939 Depreciation Depreciation on existing assets Alloc of calc depr. 0% [9] 000 USD - - - - - - - - - - - - - - - - - - Assumed proportion of calc depreciation Gradual increase [10] % 5% 10% 10% 10% 10% 10% 15% 20% 25% 30% 30% 30% 30% 30% 30% 30% 30% Depreciation on Capital Investment [10] 000 USD 2 7 11 56 94 98 152 215 281 352 432 384 431 517 538 552 566 Sub-Total Capital Costs 000 USD - 4,668 4,054 3,786 54,223 67,371 34,797 33,141 32,959 31,316 29,677 33,108 26,290 71,698 85,468 51,773 48,457 45,141 OPERATION - Variable Bulk water N/A 3 Assumed unit cost for bulk water N/A [11] USD/m 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 Annual bulk water cost N/A 000 USD 731 894 1,062 1,236 1,415 1,600 2,603 3,309 3,402 3,494 3,587 3,680 3,772 3,865 3,957 4,050 4,143 4,235 Abstraction Assumed unit abstraction cost inflation 0% p.a. USD/m3 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 Adjust (actual/desired level) on existing gradual [12] % 0% 0% 5% 5% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 100% 100% 100% 100% Annual abstraction cost 000 USD - - - - - - - - - - - - - - - - - - Power 3 Assumed unit power cost Inflation 0% p.a. [13] USD/m 0.07 0.07 0.07 0.07 0.07 0.07 0.07 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 0.08 Annual power cost 000 USD - - - - - - - - - - - - - - - - - - Chemical 3 Assumed unit chemical cost Inflation p.a. 0% p.a. [14] USD/m 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 Annual chemical cost 000 USD - - - - - - - - - - - - - - - - - - Sub-Total Variable Costs 000 USD 731 894 1,062 1,236 1,415 1,600 2,603 3,309 3,402 3,494 3,587 3,680 3,772 3,865 3,957 4,050 4,143 4,235 OPERATION - Fixed Personnel [15] 000 USD 1,169 1,169 1,641 1,846 1,846 2,107 2,107 2,107 2,107 2,107 2,107 2,107 2,107 2,107 2,107 2,107 2,107 2,107 Transport [16] Number of vehicles No. 4 4 4 4 4 4 4 4 4 4 4 4 4 4 Number of Motor cycles No 1 1 1 1 6 6 6 6 6 6 6 6 6 6 6 6 6 6 Number of Trucks No 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Assumed unit fuel cost 0% p.a. USD/litre 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 Annual vehicle operating cost 000 USD 1 1 1 1 22 22 22 22 22 22 22 22 22 22 22 22 22 22 Other administration costs % of personnel 20% [17] 000 USD 234 234 328 369 369 421 421 421 421 421 421 421 421 421 421 421 421 421 Sub-Total Fixed Costs 000 USD 1,404 1,404 1,970 2,216 2,237 2,550 2,550 2,550 2,550 2,550 2,550 2,550 2,550 2,550 2,550 2,550 2,550 2,550 MAINTENANCE Adjust (actual/desired level) on maintenancGradual increase [18] % 10% 10% 15% 20% 25% 30% 35% 40% 50% 50% 50% 50% 50% 50% 50% 50% 50% 50% Existing assets 000 USD 39 39 58 77 97 116 135 155 194 194 194 194 194 194 194 160 160 158 GHWSSIP Investments 000 USD - 2 7 14 70 146 178 213 284 302 320 364 381 438 495 515 535 555 Other investments 000 USD - - - - - - - - - - - - - - - - - - Sub-Total Maintenance 000 USD 39 41 65 92 167 262 314 368 478 496 513 557 575 632 688 675 695 713 Gauff Ingenieure 1 of 4 Greater Harare Water Sanitation Investment Plan Appendix II Greater Harare Average Unit Bulk Cost Calculation ASSUMPTION/ NOTE REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 NOTE VALUE Assumed unit abstraction cost USD/m3 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 Assumed unit power cost USD/m3 0.0701389 0.0701389 0.0701389 0.0701389 0.0701389 0.0701389 0.0701389 0.08125 0.08125 0.08125 0.08125 0.08125 0.08125 0.08125 0.08125 0.08125 0.08125 0.08125 Assumed unit chemical cost USD/m3 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 Proportion of Financial costs 25% USD/m3 - 0.0034 0.0041 0.0037 0.0588 0.0892 0.0493 0.0372 0.0366 0.0361 0.0359 0.0359 0.0315 0.0436 0.0556 0.0518 0.0480 0.0444 Proportion of fixed costs 25% USD/m3 0.4571 0.3413 0.3710 0.3321 0.2726 0.2571 0.1484 0.1101 0.1056 0.1013 0.0974 0.0936 0.0901 0.0868 0.0837 0.0807 0.0779 0.0753 Proportion of Maintenance costs 30% USD/m3 0.0151 0.0120 0.0147 0.0165 0.0244 0.0317 0.0219 0.0191 0.0237 0.0236 0.0235 0.0246 0.0244 0.0258 0.0271 0.0256 0.0255 0.0253 Sub-total unit cost for water Average 0.43 USD/m3 0.65 0.54 0.57 0.53 0.54 0.56 0.40 0.36 0.36 0.35 0.35 0.35 0.34 0.35 0.36 0.35 0.34 0.34 Average Unit Retail Cost Calculation ASSUMPTION/ NOTE REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 NOTE VALUE Assumed unit cost for bulk water USD/m3 0.3999 0.3999 0.3999 0.3999 0.3999 0.3999 0.4000 0.4000 0.4000 0.4000 0.4000 0.4000 0.4000 0.4000 0.4000 0.4000 0.4000 0.4000 Assumed unit abstraction cost USD/m3 - - - - - - - - - - - - - - - - - - Assumed unit power cost USD/m3 - - - - - - - - - - - - - - - - - - Assumed unit chemical cost USD/m3 - - - - - - - - - - - - - - - - - - 3 Proportion of Financial costs 60% USD/m - 0.0081 0.0098 0.0088 0.1411 0.2141 0.1184 0.0892 0.0878 0.0867 0.0861 0.0862 0.0755 0.1047 0.1334 0.1242 0.1151 0.1066 Proportion of fixed costs 60% USD/m3 1.0970 0.8192 0.8904 0.7971 0.6543 0.6170 0.3561 0.2642 0.2534 0.2432 0.2337 0.2247 0.2163 0.2083 0.2008 0.1937 0.1870 0.1806 Proportion of Maintenance costs 60% USD/m3 0.0303 0.0240 0.0294 0.0329 0.0489 0.0634 0.0438 0.0381 0.0475 0.0473 0.0470 0.0491 0.0488 0.0516 0.0542 0.0513 0.0510 0.0505 Sub-total unit cost for water Average 0.96 USD/m3 1.53 1.25 1.33 1.24 1.24 1.29 0.92 0.79 0.79 0.78 0.77 0.76 0.74 0.76 0.79 0.77 0.75 0.74 Adjustment for collection losses USD/m3 0.50 0.38 0.40 0.31 0.25 0.19 0.09 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 0.04 Total average cost covering water tariff USD/m3 2.03 1.63 1.73 1.55 1.49 1.49 1.01 0.83 0.83 0.82 0.81 0.80 0.78 0.80 0.83 0.81 0.79 0.77 Total average cost covering W&S tariff USD/m3 3.03 2.36 2.53 2.25 2.17 2.17 1.39 1.11 1.10 1.08 1.06 1.05 1.02 1.06 1.10 1.07 1.04 1.01 Calculated sewerage charges % 1.00 0.73 0.80 0.70 0.68 0.68 0.38 0.28 0.27 0.26 0.25 0.25 0.24 0.26 0.27 0.26 0.25 0.24 Calculated proportion of sewerage of Water 49% 45% 46% 45% 46% 46% 38% 34% 33% 32% 31% 31% 31% 33% 33% 32% 32% 31% Water tariff used in Fin Model 0% 1.45 1.35 1.20 1.15 1.15 1.15 1.15 1.15 1.10 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 Unit Costs Chemicals UNIT The unit cost of Borehole Chlorine USD/kg chemicals is 4 calculated for Dosing rate g/m3 5 two scenarios, Costs/m3 USD/m3 (a) for surface 0.02 Alum USD/kg water intakes Dosing rate g/m3 and (b) Costs/m3 USD/m3 borehole Lime USD/kg abstraction and the relevant Dosing rate g/m3 3 cost is applied Costs/m3 USD/m to the unit of Total Unit Chemical Cost USD/m3 water produced 0.0200 Power UNIT Long-Term Volume m /h 3 For details on 4,633 Pumping head H Q & h refer to 117 Pump efficiency % i t b 0.72 KWh KW/h Both the 752.8625 3 Power consumption KW/m midium and 0.1625 Cost/ KWh USD/KWh long term unit 0.5 Cost per m3 USD/m3 cost 0.0813 Explanation notes for referenced items above: [1] Water demand projected for 2013, 2020 and 2030 representing three milestones. The periods between these were interpolated on a linear basis. [2] The peak seasonal factor and peak demand are calculated as a function of average demand and used to ascertain the production surplus/(deficit). [3] Production losses attributable to backwash, flushing and other cleaning operations are assumed to increase the abstraction of raw water. [4] The water produced is the volume of water after production losses equal to either the demand or the production capacity, whichever smaller. [5] The proportion of bulk water available may be less than 100 % in the event that bulk water supply is practically throttled or cannot be produced. [6] If the entity does not produce (adequate) water and bulk water is available (even if only limited), the assumed volumes of water bought are calculated considering demand, own production and proportional available. [7] The volume of water available is the addition of water produced plus water bought in bulk (if any). [8] Details on funding of investments are provided in a separate table (see Investment Assets Tab).. [9] Depreciation is based on replacement value and economic life. In view of recent financial performance it is not realistic to bring these calculated costs to account, thus, the depreciation for existing assets was set to nil through entry [10] As with existing assets, the full annual value of depreciation of new assets is high and realistically not a priority and therefore revised downward. [11] Bulk water costs are calculated separately; considering abstraction, power, chemicals, financial, fixed and maintenance costs and compared with current levels. [12] Abstraction costs are gradually adjusted from current payment levels to required levels. [13] Unit power costs for pumping are calculated on the basis of current and anticipated Q & h values and pumping times as detailed in a separate table (see Pumping tab). [14] Unit chemical costs are calculated for surface water and borehole abstraction and applied accordingly; they include treatment chemicals (aluminium sulphate, lime) and disinfection (chlorine) as detailed in a separate table below the [15] Personnel costs are based on separately calculated (see HR tab) number of staff, assumed scales, allowances, contribution to pension, etc. and a % allocation to water and sanitation to take into account recharges for other [16] The calculation of transport costs is based on the number of units, average annual distance travelled/hours worked, fuel consumption per km/hr. and fuel price. [17] Other administration costs including insurance, external professional fees (e.g. audit), office stationery, office utilities, etc. are estimated as a proportion of employment costs. [18] Desired and ideal maintenance costs are calculated for both existing and future assets, but are high and from past experience not realistic to apply the full cost. Therefore, an adjustment of the desired to the realistic level is carried Gauff Ingenieure 2 of 4 Greater Harare Water Sanitation Investment Plan Appendix II Greater Harare NORTON Detailed revenue calculations ITEM ASSUMPTION/ NOTE REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 NOTE VALUE WATER VOLUMES Water Produced From cost table 000 m3 - - - - - - - - - - - - - - - - - - Water bought in bulk From cost table 000 m3 1,828 2,235 2,655 3,089 3,537 3,999 6,509 8,273 8,505 8,736 8,968 9,199 9,431 9,662 9,894 10,125 10,357 10,588 Demand for bulk water sales 000 m3 Assumed proportion of bulk water supplied [1] % 25% 30% 35% 40% 45% 50% 80% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% Water sold in bulk Sum of satellites [1] 000 m3 - - - - - - - - - - - - - - - - - - Total Water available 000 m3 1,828 2,235 2,655 3,089 3,537 3,999 6,509 8,273 8,505 8,736 8,968 9,199 9,431 9,662 9,894 10,125 10,357 10,588 Non-Revenue Water (NRW) [2] % 58% 54% 50% 46% 42% 38% 34% 30% 29% 28% 27% 26% 25% 24% 23% 22% 21% 20% NRW reduction [2] % 4.0% 4.0% 4.0% 4.0% 4.0% 4.0% 4.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% Total volumes billed incl. [sold] bulk 000 m3 768 1,028 1,328 1,668 2,052 2,480 4,296 5,791 6,038 6,290 6,546 6,807 7,073 7,343 7,618 7,898 8,182 8,470 Total Volumes Billed [Sold] excl. bulk [3] 000 m3 768 1,028 1,328 1,668 2,052 2,480 4,296 5,791 6,038 6,290 6,546 6,807 7,073 7,343 7,618 7,898 8,182 8,470 Number of Accounts Based on metering program 000 No. 358 373 379 394 409 424 439 455 473 491 509 527 545 563 581 599 617 635 REVENUE STREAMS 3 Assumed tariff for Bulk Supply (if any) Keep current levels [4] USD/m 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 3 Combined average retail tariff (simplified) Water + Sewer incl fixed [5] USD/m 1.45 1.35 1.20 1.15 1.15 1.15 1.15 1.15 1.10 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 Calculated Bulk Sales 000 USD - - - - - - - - - - - - - - - - - - Calculated Combined Retail Sales 000 USD 1,113 1,388 1,593 1,919 2,359 2,851 4,940 6,660 6,642 5,661 5,892 6,127 6,366 6,609 6,856 7,108 7,364 7,623 Total Billing for Water & Sewerage 000 USD 1,113 1,388 1,593 1,919 2,359 2,851 4,940 6,660 6,642 5,661 5,892 6,127 6,366 6,609 6,856 7,108 7,364 7,623 Collection Efficiency [6] % 67% 70% 70% 75% 80% 85% 90% 95% 95% 95% 95% 95% 95% 95% 95% 95% 95% 95% Collections from Water & Sewerage 000 USD 746 971 1,115 1,439 1,888 2,424 4,446 6,327 6,310 5,378 5,597 5,820 6,047 6,278 6,513 6,752 6,995 7,242 Other revenue (recovery of old debt) % of 3 year debt 5.0% [7] 000 USD 2,315 2,555 18 21 24 24 24 21 25 17 17 14 15 15 16 17 17 Total revenue collection 000 USD 746 3,286 3,670 1,457 1,908 2,448 4,470 6,351 6,331 5,403 5,614 5,837 6,062 6,293 6,529 6,768 7,012 7,259 Explanation notes for referenced items above: [1] It is not anticipated that Harare will be able to fully cover water demand until investments are made and efficiencies have improved. To reflect this condition, a proportion of bulk supply reflected as revenue for [2] NRW is aligned to curredntly reported levels and deemed to improve with reforms and future investments, whereby milestone targets are set for 2020 and 2030. [3] Volumes of water sold bulk and excl bulk is based on bulk sold before NRW and retail after NRW at different tariffs [4] While detailed bulk tariff calculations are provided below the main cost table, the current existing bulk tariff is applied throughout. [5] The combined tariff includes water, sewerage and any fixed charge component applied as an overall unit tariff. [6] The collection efficiency in the base year appears to be anoutlier compared to previous years. Future collection efficiencies are based o agreed milestones. [7] A proportion of old debt (3-years old) is assumed to be collected. 416 Gauff Ingenieure 3 of 4 Greater Harare Water Sanitation Investment Plan Appendix II Greater Harare NORTON INCOME STATEMENT ITEM REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Income Streams Bulk sales 000 USD - - - - - - - - - - - - - - - - - - Combined Water & Sewerage 000 USD 1,113 1,388 1,593 1,919 2,359 2,851 4,940 6,660 6,642 5,661 5,892 6,127 6,366 6,609 6,856 7,108 7,364 7,623 Sub-Total 000 USD 1,113 1,388 1,593 1,919 2,359 2,851 4,940 6,660 6,642 5,661 5,892 6,127 6,366 6,609 6,856 7,108 7,364 7,623 Cost Streams [=Expenditure] Operation - Fixed Costs 000 USD 1,404 1,404 1,970 2,216 2,237 2,550 2,550 2,550 2,550 2,550 2,550 2,550 2,550 2,550 2,550 2,550 2,550 2,550 Operation - Variable 000 USD 731 894 1,062 1,236 1,415 1,600 2,603 3,309 3,402 3,494 3,587 3,680 3,772 3,865 3,957 4,050 4,143 4,235 Maintenance 000 USD 39 41 65 92 167 262 314 368 478 496 513 557 575 632 688 675 695 713 Capital Charges (INTEREST ONLY) 000 USD - 12 14 14 426 791 750 709 669 628 587 546 506 851 1,177 1,097 1,018 939 Sub-Total 000 USD 2,173 2,350 3,112 3,557 4,246 5,202 6,217 6,936 7,098 7,168 7,237 7,333 7,403 7,897 8,372 8,372 8,406 8,437 Surplus/(Deficit) 000 USD (1,060) (963) (1,519) (1,639) (1,886) (2,351) (1,277) (277) (456) (1,507) (1,345) (1,206) (1,037) (1,288) (1,516) (1,264) (1,042) (814) ADJUSTED INCOME STATEMENT Income Total Income 000 USD 1,113 1,388 1,593 1,919 2,359 2,851 4,940 6,660 6,642 5,661 5,892 6,127 6,366 6,609 6,856 7,108 7,364 7,623 Expenditure Total Expenses 000 USD 2,173 2,350 3,112 3,557 4,246 5,202 6,217 6,936 7,098 7,168 7,237 7,333 7,403 7,897 8,372 8,372 8,406 8,437 Provision for debt write-off [1] 000 USD 184 416 478 480 472 428 494 333 332 283 295 306 318 330 343 355 368 381 Depreciation [2] 000 USD - 2 7 11 57 94 98 152 215 281 352 432 384 431 517 538 552 566 Total Expenses incl. Depreciation 000 USD 2,357 2,769 3,597 4,048 4,774 5,724 6,809 7,421 7,646 7,732 7,884 8,072 8,105 8,659 9,232 9,265 9,326 9,385 Adjusted Surplus/(Deficit) 000 USD (1,244) (1,381) (2,004) (2,129) (2,415) (2,872) (1,869) (761) (1,003) (2,071) (1,992) (1,945) (1,740) (2,050) (2,376) (2,158) (1,962) (1,761) CASH FLOW STATEMENT ITEM REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Cash Flow from Operating Activities Profit/(loss) from income statement 000 USD (1,244) (1,381) (2,004) (2,129) (2,415) (2,872) (1,869) (761) (1,003) (2,071) (1,992) (1,945) (1,740) (2,050) (2,376) (2,158) (1,962) (1,761) Adjust for non-cash items 000 USD Depreciation [2] 000 USD 0 2 7 11 57 94 98 152 215 281 352 432 384 431 517 538 552 566 Provision for debt write-off 184 416 478 480 472 428 494 333 332 283 295 306 318 330 343 355 368 381 Net adjusted income for the year 000 USD (1,060) (963) (1,519) (1,639) (1,886) (2,351) (1,277) (277) (456) (1,507) (1,345) (1,206) (1,037) (1,288) (1,516) (1,264) (1,042) (814) Adjust for Change in Working Capital (Increase)/Decrease in debtors [3] 000 USD (367) (416) (478) (480) (472) (428) (494) (333) (332) (283) (295) (306) (318) (330) (343) (355) (368) (381) Partial debt recovery [4] 000 USD 0 2,315 2,555 18 21 24 24 24 21 25 17 17 14 15 15 16 17 17 Increase/(Decrease) in creditors [5] 000 USD 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Net change in working capital 000 USD (367) 1,899 2,077 (461) (451) (404) (470) (309) (311) (258) (278) (290) (304) (316) (327) (339) (352) (364) Cash Flow from Investment Activities Repayment of principal 000 USD 0 (12) (15) (15) (428) (814) (814) (814) (814) (814) (814) (814) (814) (1,200) (1,586) (1,586) (1,586) (1,586) Net change generaged by/(used in investment activit 000 USD 0 (12) (15) (15) (428) (814) (814) (814) (814) (814) (814) (814) (814) (1,200) (1,586) (1,586) (1,586) (1,586) Cash Flow Net increase/(decrease) in cash & equiv. 000 USD (1,428) 924 544 (2,115) (2,766) (3,569) (2,561) (1,400) (1,581) (2,579) (2,438) (2,310) (2,155) (2,804) (3,429) (3,190) (2,980) (2,764) Cash & cash equiv. at beginning of year 000 USD 0 (1,428) (504) 40 (2,075) (4,841) (8,409) (10,970) (12,371) (13,951) (16,530) (18,968) (21,278) (23,433) (26,237) (29,666) (32,856) (35,835) Cash & cash equivalents at end of year 000 USD (1,428) (504) 40 (2,075) (4,841) (8,409) (10,970) (12,371) (13,951) (16,530) (18,968) (21,278) (23,433) (26,237) (29,666) (32,856) (35,835) (38,599) BALANCE SHEET (Simplified) ITEM REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Assets Fixed Assets [6] Existing Plant & equipment 10,974 10,546 10,118 9,690 9,262 8,834 8,406 7,977 7,549 7,121 6,693 6,265 5,837 5,408 4,980 4,552 4,191 3,830 Future Plant & equipment 2,045 3,694 5,187 22,756 38,851 39,477 40,066 41,323 42,532 43,692 47,116 48,169 64,497 80,541 81,322 82,057 82,744 Total Fixed Assets 10,974 12,591 13,812 14,877 32,018 47,685 47,882 48,043 48,873 49,653 50,385 53,381 54,005 69,906 85,521 85,874 86,247 86,573 Current Assets & Liabilities Short term assets (cash) [7] (1,428) (504) 40 (2,075) (4,841) (8,409) (10,970) (12,371) (13,951) (16,530) (18,968) (21,278) (23,433) (26,237) (29,666) (32,856) (35,835) (38,599) Debtors [8] 278 347 398 480 590 713 1,235 1,665 1,661 1,415 1,473 1,532 1,591 1,652 1,714 1,777 1,841 1,906 Creditors [9] (167) (195) (243) (283) (329) (384) (560) (687) (721) (739) (757) (780) (798) (823) (848) (861) (880) (899) Net Current Assets (1,317) (352) 196 (1,878) (4,580) (8,081) (10,296) (11,392) (13,011) (15,854) (18,252) (20,527) (22,640) (25,408) (28,800) (31,940) (34,875) (37,592) Total Assets 9,658 12,240 14,008 12,999 27,438 39,604 37,587 36,651 35,861 33,799 32,133 32,854 31,365 44,498 56,721 53,934 51,373 48,981 Equity & Liabilites Equity [10] 9,658 12,012 13,735 12,741 19,342 24,606 23,402 23,281 23,305 22,057 21,205 22,740 22,065 28,682 34,774 33,573 32,598 31,792 Long Term liabilities [11] 0 228 273 258 8,096 14,999 14,184 13,370 12,556 11,742 10,928 10,114 9,300 15,816 21,947 20,361 18,775 17,189 Total Equity & Liabilities 9,658 12,240 14,008 12,999 27,438 39,604 37,587 36,651 35,861 33,799 32,133 32,854 31,365 44,498 56,721 53,934 51,373 48,981 notes for referenced items above: [1] Provisions to write off bad debt was set at 50 % in the base year and 100 % thereafter to gradually introduce the concept which does not appear to be ccarried out currently. [2] Depreciation for both existing and new assets is reflected here, as calculated in existing and Investment assets tabs and allocated as per the main cost table under the Cost tab. [3] Debtors are calculated as the difference between billing and cash collections for the respective year. [4] Partial debt recovery is calculated in the revenue table based on a small proportion of 3-year old debt recovered as cash collections. [5] With past history of deficit cash flow funded in part from creditors the entity has become uncreditworthy and future cash flow is based on a strictly cash on delivery basis, i.e. costs = expenditure. [6] The value of fixed assets is returned as the depreciated residual value of existing and investment assets calculated in the respective existing assets and investment assets tabs. [7] Accumulated cash reserves/(deficit) [8] Debtors as defined under note [3] [9] Asume two months worth of fixed costs (except personnel), variable and maintenance. [10] Balance of total assets and (less) long term liabilities. [11] The balance on loans is represented as long term liabilities. Gauff Ingenieure 4 of 4 Greater Harare Water Sanitation Investment Plan Appendix II Greater Harare RUWA Detailed Cost Calculations ITEM ASSUMPTION/ NOTE REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 2031 NOTE VALUE VOLUMES 3 Average water demand [1] 000 m 5,904 6,472 7,040 7,608 8,175 8,743 9,311 9,879 10,169 10,458 10,748 11,037 11,327 11,617 11,906 12,196 12,485 12,775 3 Peak water demand Seasonal factor 1.25 [2] 000 m 7,380 8,090 8,800 9,510 10,219 10,929 11,639 12,349 12,711 13,073 13,435 13,797 14,159 14,521 14,883 15,245 15,607 15,969 Production Capacity 000 m3 730 2,738 2,738 2,738 2,738 2,738 6,388 6,388 6,388 6,388 6,388 6,388 6,388 6,388 6,388 6,388 6,388 6,388 Treatment surplus/(deficit) [2] (6,650) (5,352) (6,062) (6,772) (7,482) (8,192) (5,251) (5,961) (6,323) (6,685) (7,047) (7,409) (7,771) (8,133) (8,495) (8,857) (9,219) (9,581) 3 Raw Water [3] 000 m 767 2,874 2,874 2,874 2,874 2,874 6,707 6,707 6,707 6,707 6,707 6,707 6,707 6,707 6,707 6,707 6,707 6,707 Assumed Production losses [3] % 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 5% 3 Water Produced [4] 000 m 730 2,738 2,738 2,738 2,738 2,738 6,388 6,388 6,388 6,388 6,388 6,388 6,388 6,388 6,388 6,388 6,388 6,388 Proportion of bulk water available [5] % 25% 30% 35% 40% 45% 50% 80% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 3 Water bought in bulk Bulk available? (y/n) Y [6] 000 m 1,294 1,120 1,506 1,948 2,447 3,003 2,339 3,491 3,781 4,070 4,360 4,649 4,939 5,229 5,518 5,808 6,097 6,387 3 Water available [7] 000 m 2,024 3,858 4,244 4,686 5,185 5,741 8,727 9,880 10,170 10,459 10,749 11,038 11,328 11,618 11,907 12,197 12,486 12,776 COST STREAMS CAPITAL COSTS Disbursements on capital investments [8] Disbursements from GHWSSIP grant 000 USD - 240 60 - 10,307 9,881 - - - - - - - 9,100 9,100 - - - Disbursements from GH WSSIP concessionary loan 000 USD - - - - - - - - - - - - - - - - - - Disbursements from GHWSSIP loan 000 USD - 240 60 - 10,307 9,881 - - - - - - - 9,100 9,100 - - - Disbursements from own resources 000 USD - - - - - - - - 370 370 370 3,125 370 370 370 656 656 656 Disbursements from external/private invest. 000 USD - 3,831 3,831 3,831 3,831 3,831 3,831 3,831 2,917 2,917 2,917 2,917 2,917 2,917 2,917 2,917 2,917 2,917 Disbursements from CMEC 000 USD - - - - - - - - - - - - - - - - - - Disbursements from ZimFund grant 000 USD - - - - - - - - - - - - - - - - - - Total Disbursements for investments 000 USD - 4,311 3,951 3,831 24,444 23,592 3,831 3,831 3,286 3,286 3,286 6,041 3,286 21,485 21,485 3,572 3,572 3,572 Repayments of principal repay period Repayment of GHWSSIP loan principal 0 yr grace, repay 20 years 000 USD - 12 15 15 530 1,024 1,024 1,024 1,024 1,024 1,024 1,024 1,024 1,479 1,934 1,934 1,934 1,934 Repayment of CMEC principal 3 yr grace, repay in 5 years 000 USD - - - - - - - - Total repayment of principal 000 USD - 12 15 15 530 1,024 1,024 1,024 1,024 1,024 1,024 1,024 1,024 1,479 1,934 1,934 1,934 1,934 Balance on loans Balance of concessionary loan principal year end 000 USD - - - - - - - - - - - - - - - - - - Balance of GHWSSIP loan principal year end 000 USD - 228 273 258 10,034 18,890 17,866 16,842 15,817 14,793 13,769 12,744 11,720 19,340 26,505 24,571 22,637 20,702 Balance of CMEC loan year end 000 USD - - - - - - - - - - - - - - - - - - Total balance on loans year end 000 USD - 228 273 258 10,034 18,890 17,866 16,842 15,817 14,793 13,769 12,744 11,720 19,340 26,505 24,571 22,637 20,702 Interest on Loans Interest on existing loans 000 USD Interest on GHWSSIP loan Interest rate 5.0% p.a. 000 USD - 12 14 14 528 996 945 893 842 791 740 688 637 1,041 1,422 1,325 1,229 1,132 Interest on CMEC loan Interest rate 3.5% p.a. 000 USD - - - - - - - - - - - - - - - - - - Total interest on loans 000 USD - 12 14 14 528 996 945 893 842 791 740 688 637 1,041 1,422 1,325 1,229 1,132 Depreciation Depreciation on existing assets Alloc of calc depr. 0% [9] 000 USD - - - - - - - - - - - - - - - - - - Assumed proportion of calc depreciation Gradual increase [10] % 5% 10% 10% 10% 10% 10% 15% 20% 25% 30% 30% 30% 30% 30% 30% 30% 30% Depreciation on Capital Investment [10] 000 USD 4 16 25 84 135 143 227 322 418 521 611 555 601 698 724 742 760 Sub-Total Capital Costs 000 USD - 9,130 8,523 8,260 71,157 89,140 47,475 45,408 42,262 40,208 38,159 41,608 33,891 87,293 103,392 63,530 59,486 55,442 OPERATION - Variable Bulk water N/A 3 Assumed unit cost for bulk water N/A [11] USD/m 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 Annual bulk water cost N/A 000 USD 517 448 602 779 979 1,201 935 1,396 1,512 1,628 1,744 1,860 1,976 2,091 2,207 2,323 2,439 2,555 Abstraction Assumed unit abstraction cost inflation 0% p.a. USD/m3 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 Adjust (actual/desired level) on existing gradual [12] % 0% 0% 5% 5% 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% 100% 100% 100% 100% Annual abstraction cost 000 USD - - 9 9 17 34 121 161 201 241 282 322 362 402 402 402 402 402 Power 3 Assumed unit power cost Inflation 0% p.a. [13] USD/m 0.12 0.12 0.12 0.12 0.12 0.12 0.12 0.12 0.12 0.12 0.12 0.12 0.12 0.12 0.12 0.12 0.12 0.12 Annual power cost 000 USD 90 336 336 336 336 336 785 772 772 772 772 772 772 772 772 772 772 772 Chemical 3 Assumed unit chemical cost Inflation p.a. 0% p.a. [14] USD/m 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 0.05 Annual chemical cost 000 USD 38 142 142 142 142 142 332 332 332 332 332 332 332 332 332 332 332 332 Sub-Total Variable Costs 000 USD 645 927 1,090 1,266 1,475 1,714 2,173 2,661 2,817 2,973 3,129 3,285 3,441 3,597 3,713 3,829 3,945 4,061 OPERATION - Fixed Personnel [15] 000 USD 710 710 1,000 1,125 1,125 1,465 1,465 1,465 1,465 1,465 1,465 1,465 1,465 1,465 1,465 1,465 1,465 1,465 Transport [16] Number of vehicles No. 4 4 4 4 4 4 4 4 4 4 4 4 4 4 Number of Motor cycles No 3 3 3 3 6 6 6 6 6 6 6 6 6 6 6 6 6 6 Number of Trucks No 1 1 1 1 1 1 1 1 1 1 1 1 1 1 Assumed unit fuel cost 0% p.a. USD/litre 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 1.25 Annual vehicle operating cost 000 USD 2 2 2 2 22 22 22 22 22 22 22 22 22 22 22 22 22 22 Other administration costs % of personnel 20% [17] 000 USD 142 142 200 225 225 293 293 293 293 293 293 293 293 293 293 293 293 293 Sub-Total Fixed Costs 000 USD 854 854 1,202 1,351 1,371 1,780 1,780 1,780 1,780 1,780 1,780 1,780 1,780 1,780 1,780 1,780 1,780 1,780 MAINTENANCE Adjust (actual/desired level) on maintenancGradual increase [18] % 10% 10% 10% 15% 20% 25% 30% 35% 40% 50% 50% 50% 50% 50% 50% 50% 50% 50% 50% Existing assets 000 USD 64 64 64 96 128 160 192 224 256 320 319 319 317 317 317 316 301 301 GHWSSIP Investments 000 USD - 6 11 25 74 143 188 239 293 391 416 470 495 565 634 662 690 718 Other investments 000 USD - - - - - - - - - - - - - - - - - - Sub-Total Maintenance 000 USD 64 70 75 121 202 303 380 463 549 711 735 789 812 882 951 978 992 1,020 Gauff Ingenieure 1 of 4 Greater Harare Water Sanitation Investment Plan Appendix II Greater Harare Average Unit Bulk Cost Calculation ASSUMPTION/ NOTE REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 NOTE VALUE Assumed unit abstraction cost USD/m3 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 0.06 Assumed unit power cost USD/m3 0.1229167 0.1229167 0.1229167 0.1229167 0.1229167 0.1229167 0.1229167 0.1208333 0.1208333 0.1208333 0.1208333 0.1208333 0.1208333 0.1208333 0.1208333 0.1208333 0.1208333 0.1208333 Assumed unit chemical cost USD/m3 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 0.0519 Proportion of Financial costs 25% USD/m3 - 0.0023 0.0036 0.0038 0.0509 0.0794 0.0472 0.0405 0.0403 0.0401 0.0402 0.0398 0.0351 0.0465 0.0578 0.0539 0.0499 0.0463 Proportion of fixed costs 25% USD/m3 0.2511 0.1202 0.1416 0.1335 0.1140 0.1251 0.0773 0.0644 0.0617 0.0591 0.0567 0.0545 0.0524 0.0504 0.0486 0.0468 0.0451 0.0436 Proportion of Maintenance costs 30% USD/m3 0.0226 0.0118 0.0106 0.0144 0.0202 0.0255 0.0198 0.0201 0.0228 0.0283 0.0281 0.0290 0.0287 0.0300 0.0311 0.0309 0.0302 0.0299 Sub-total unit cost for water Average 0.38 USD/m3 0.51 0.37 0.39 0.39 0.42 0.46 0.38 0.36 0.36 0.36 0.36 0.36 0.35 0.36 0.37 0.36 0.36 0.35 Average Unit Retail Cost Calculation ASSUMPTION/ NOTE REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 NOTE VALUE Assumed unit cost for bulk water USD/m3 0.2557 0.1162 0.1419 0.1663 0.1888 0.2092 0.1072 0.1413 0.1487 0.1557 0.1622 0.1685 0.1744 0.1800 0.1854 0.1905 0.1953 0.2000 Assumed unit abstraction cost USD/m3 0.0216 0.0426 0.0387 0.0351 0.0317 0.0286 0.0439 0.0388 0.0377 0.0366 0.0357 0.0347 0.0338 0.0330 0.0322 0.0314 0.0307 0.0300 Assumed unit power cost USD/m3 0.0443 0.0872 0.0793 0.0718 0.0649 0.0586 0.0900 0.0781 0.0759 0.0738 0.0718 0.0699 0.0681 0.0664 0.0648 0.0633 0.0618 0.0604 Assumed unit chemical cost USD/m3 0.0187 0.0368 0.0335 0.0303 0.0274 0.0247 0.0380 0.0336 0.0326 0.0317 0.0308 0.0300 0.0293 0.0285 0.0278 0.0272 0.0266 0.0260 Proportion of Financial costs 60% USD/m3 - 0.0054 0.0087 0.0091 0.1221 0.1906 0.1133 0.0972 0.0967 0.0963 0.0964 0.0954 0.0842 0.1116 0.1387 0.1293 0.1199 0.1110 Proportion of fixed costs 60% USD/m3 0.6026 0.2886 0.3398 0.3205 0.2736 0.3002 0.1855 0.1545 0.1480 0.1419 0.1362 0.1308 0.1257 0.1210 0.1165 0.1123 0.1083 0.1045 Proportion of Maintenance costs 60% USD/m3 0.0452 0.0235 0.0213 0.0287 0.0404 0.0510 0.0396 0.0401 0.0456 0.0567 0.0562 0.0580 0.0574 0.0599 0.0622 0.0617 0.0603 0.0599 Sub-total unit cost for water Average 0.65 USD/m3 0.99 0.60 0.66 0.66 0.75 0.86 0.62 0.58 0.59 0.59 0.59 0.59 0.57 0.60 0.63 0.62 0.60 0.59 Adjustment for collection losses USD/m3 0.58 0.30 0.27 0.20 0.15 0.13 0.06 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 0.03 Total average cost covering water tariff USD/m3 1.57 0.90 0.93 0.86 0.90 0.99 0.68 0.61 0.61 0.62 0.62 0.62 0.60 0.63 0.66 0.65 0.63 0.62 Total average cost covering W&S tariff USD/m3 2.26 1.22 1.27 1.17 1.25 1.41 0.93 0.82 0.82 0.83 0.82 0.82 0.79 0.84 0.88 0.86 0.83 0.81 Calculated sewerage charges % 0.69 0.32 0.34 0.31 0.35 0.42 0.25 0.21 0.21 0.21 0.20 0.20 0.19 0.21 0.22 0.21 0.20 0.19 Calculated proportion of sewerage of Water 44% 36% 37% 36% 39% 42% 37% 34% 34% 34% 32% 32% 32% 33% 33% 32% 32% 31% Water tariff used in Fin Model 0% 1.45 1.35 1.20 1.15 1.15 1.15 1.15 1.15 1.10 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 Unit Costs Chemicals UNIT The unit cost of Borehole Chlorine USD/kg chemicals is 4 calculated for Dosing rate g/m3 two scenarios, 5 Costs/m3 USD/m3 (a) for surface 0.02 Alum USD/kg water intakes Dosing rate g/m3 and (b) borehole Costs/m3 USD/m3 abstraction and Lime USD/kg the relevant Dosing rate g/m3 cost is applied Costs/m3 USD/m3 to the unit of USD/m3 water produced Total Unit Chemical Cost 0.0200 in the table Power UNIT Long-Term Volume m /h 3 For details on 648 Pumping head H Q & h refer to 174 pumping tab Pump efficiency % 0.72 KWh KW/h Both the 156.6 Power consumption KW/m3 midium and 0.2416667 Cost/ KWh USD/KWh long term unit 0.5 Cost per m3 USD/m3 cost 0.1208 l l ti Explanation notes for referenced items above: [1] Water demand projected for 2013, 2020 and 2030 representing three milestones. The periods between these were interpolated on a linear basis. [2] The peak seasonal factor and peak demand are calculated as a function of average demand and used to ascertain the production surplus/(deficit). [3] Production losses attributable to backwash, flushing and other cleaning operations are assumed to increase the abstraction of raw water. [4] The water produced is the volume of water after production losses equal to either the demand or the production capacity, whichever smaller. [5] The proportion of bulk water available may be less than 100 % in the event that bulk water supply is practically throttled or cannot be produced. [6] If the entity does not produce (adequate) water and bulk water is available (even if only limited), the assumed volumes of water bought are calculated considering demand, own production and proportional available. [7] The volume of water available is the addition of water produced plus water bought in bulk (if any). [8] Details on funding of investments are provided in a separate table (see Investment Assets Tab).. [9] Depreciation is based on replacement value and economic life. In view of recent financial performance it is not realistic to bring these calculated costs to account, thus, the depreciation for existing assets was set to nil through [10] As with existing assets, the full annual value of depreciation of new assets is high and realistically not a priority and therefore revised downward. [11] Bulk water costs are calculated separately; considering abstraction, power, chemicals, financial, fixed and maintenance costs and compared with current levels. [12] Abstraction costs are gradually adjusted from current payment levels to required levels. [13] Unit power costs for pumping are calculated on the basis of current and anticipated Q & h values and pumping times as detailed in a separate table (see Pumping tab). [14] Unit chemical costs are calculated for surface water and borehole abstraction and applied accordingly; they include treatment chemicals (aluminium sulphate, lime) and disinfection (chlorine) as detailed in a separate table below [15] Personnel costs are based on separately calculated (see HR tab) number of staff, assumed scales, allowances, contribution to pension, etc. and a % allocation to water and sanitation to take into account recharges for other [16] The calculation of transport costs is based on the number of units, average annual distance travelled/hours worked, fuel consumption per km/hr. and fuel price. [17] Other administration costs including insurance, external professional fees (e.g. audit), office stationery, office utilities, etc. are estimated as a proportion of employment costs. [18] Desired and ideal maintenance costs are calculated for both existing and future assets, but are high and from past experience not realistic to apply the full cost. Therefore, an adjustment of the desired to the realistic level is Gauff Ingenieure 2 of 4 Greater Harare Water Sanitation Investment Plan Appendix II Greater Harare RUWA Detailed revenue calculations ITEM ASSUMPTION/ NOTE REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 NOTE VALUE WATER VOLUMES Water Produced From cost table 000 m3 730 2,738 2,738 2,738 2,738 2,738 6,388 6,388 6,388 6,388 6,388 6,388 6,388 6,388 6,388 6,388 6,388 6,388 Water bought in bulk From cost table 000 m3 1,294 1,120 1,506 1,948 2,447 3,003 2,339 3,491 3,781 4,070 4,360 4,649 4,939 5,229 5,518 5,808 6,097 6,387 Demand for bulk water sales 000 m3 Assumed proportion of bulk water supplied [1] % 25% 30% 35% 40% 45% 50% 80% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% 100% Water sold in bulk Sum of satellites [1] 000 m3 - - - - - - - - - - - - - - - - - - Total Water available 000 m3 2,024 3,858 4,243 4,686 5,185 5,740 8,727 9,879 10,169 10,458 10,748 11,037 11,327 11,617 11,906 12,196 12,485 12,775 Non-Revenue Water (NRW) [2] % 58% 54% 50% 46% 42% 38% 34% 30% 29% 28% 27% 26% 25% 24% 23% 22% 21% 20% NRW reduction [2] % 4.0% 4.0% 4.0% 4.0% 4.0% 4.0% 4.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% 1.0% Total volumes billed incl. [sold] bulk 000 m3 850 1,775 2,122 2,530 3,007 3,559 5,760 6,915 7,220 7,530 7,846 8,168 8,495 8,829 9,168 9,513 9,863 10,220 Total Volumes Billed [Sold] excl. bulk [3] 000 m3 850 1,775 2,122 2,530 3,007 3,559 5,760 6,915 7,220 7,530 7,846 8,168 8,495 8,829 9,168 9,513 9,863 10,220 Number of Accounts Based on metering program 000 No. 358 373 379 394 409 424 439 455 473 491 509 527 545 563 581 599 617 635 REVENUE STREAMS 3 Assumed tariff for Bulk Supply (if any) Keep current levels [4] USD/m 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 0.40 3 Combined average retail tariff (simplified) Water + Sewer incl fixed [5] USD/m 1.45 1.35 1.20 1.15 1.15 1.15 1.15 1.15 1.10 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 0.90 Calculated Bulk Sales 000 USD - - - - - - - - - - - - - - - - - - Calculated Combined Retail Sales 000 USD 1,232 2,396 2,546 2,910 3,458 4,093 6,623 7,953 7,942 6,777 7,061 7,351 7,646 7,946 8,251 8,561 8,877 9,198 Total Billing for Water & Sewerage 000 USD 1,232 2,396 2,546 2,910 3,458 4,093 6,623 7,953 7,942 6,777 7,061 7,351 7,646 7,946 8,251 8,561 8,877 9,198 Collection Efficiency [6] % 41% 50% 60% 70% 80% 85% 90% 95% 95% 95% 95% 95% 95% 95% 95% 95% 95% 95% Collections from Water & Sewerage 000 USD 506 1,198 1,528 2,037 2,766 3,479 5,961 7,555 7,545 6,438 6,708 6,983 7,263 7,548 7,838 8,133 8,433 8,738 Other revenue (recovery of old debt) % of 3 year debt 5.0% [7] 000 USD 2,315 2,555 36 60 51 44 35 31 33 20 20 17 18 18 19 20 21 Total revenue collection 000 USD 506 3,513 4,083 2,073 2,826 3,530 6,005 7,590 7,575 6,471 6,728 7,003 7,280 7,566 7,857 8,152 8,453 8,759 Explanation notes for referenced items above: [1] It is not anticipated that Harare will be able to fully cover water demand until investments are made and efficiencies have improved. To reflect this condition, a proportion of bulk supply reflected as revenue for [2] NRW is aligned to curredntly reported levels and deemed to improve with reforms and future investments, whereby milestone targets are set for 2020 and 2030. [3] Volumes of water sold bulk and excl bulk is based on bulk sold before NRW and retail after NRW at different tariffs [4] While detailed bulk tariff calculations are provided below the main cost table, the current existing bulk tariff is applied throughout. [5] The combined tariff includes water, sewerage and any fixed charge component applied as an overall unit tariff. [6] The collection efficiency in the base year appears to be anoutlier compared to previous years. Future collection efficiencies are based o agreed milestones. [7] A proportion of old debt (3-years old) is assumed to be collected. 1,198 Gauff Ingenieure 3 of 4 Greater Harare Water Sanitation Investment Plan Appendix II Greater Harare RUWA INCOME STATEMENT ITEM REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Income Streams Bulk sales 000 USD - - - - - - - - - - - - - - - - - - Combined Water & Sewerage 000 USD 1,232 2,396 2,546 2,910 3,458 4,093 6,623 7,953 7,942 6,777 7,061 7,351 7,646 7,946 8,251 8,561 8,877 9,198 Sub-Total 000 USD 1,232 2,396 2,546 2,910 3,458 4,093 6,623 7,953 7,942 6,777 7,061 7,351 7,646 7,946 8,251 8,561 8,877 9,198 Cost Streams [=Expenditure] Operation - Fixed Costs 000 USD 854 854 1,202 1,351 1,371 1,780 1,780 1,780 1,780 1,780 1,780 1,780 1,780 1,780 1,780 1,780 1,780 1,780 Operation - Variable 000 USD 645 927 1,090 1,266 1,475 1,714 2,173 2,661 2,817 2,973 3,129 3,285 3,441 3,597 3,713 3,829 3,945 4,061 Maintenance 000 USD 64 70 75 121 202 303 380 463 549 711 735 789 812 882 951 978 992 1,020 Capital Charges (INTEREST ONLY) 000 USD - 12 14 14 528 996 945 893 842 791 740 688 637 1,041 1,422 1,325 1,229 1,132 Sub-Total 000 USD 1,563 1,862 2,381 2,753 3,577 4,793 5,278 5,797 5,988 6,256 6,385 6,543 6,671 7,301 7,867 7,913 7,945 7,992 Surplus/(Deficit) 000 USD (330) 534 165 157 (119) (700) 1,346 2,155 1,953 521 677 808 974 645 384 648 932 1,206 ADJUSTED INCOME STATEMENT Income Total Income 000 USD 1,232 2,396 2,546 2,910 3,458 4,093 6,623 7,953 7,942 6,777 7,061 7,351 7,646 7,946 8,251 8,561 8,877 9,198 Expenditure Total Expenses 000 USD 1,563 1,862 2,381 2,753 3,577 4,793 5,278 5,797 5,988 6,256 6,385 6,543 6,671 7,301 7,867 7,913 7,945 7,992 Provision for debt write-off [1] 000 USD 363 1,198 1,018 873 692 614 662 398 397 339 353 368 382 397 413 428 444 460 Depreciation [2] 000 USD - 4 17 25 84 135 143 227 322 418 521 611 556 602 698 724 742 760 Total Expenses incl. Depreciation 000 USD 1,926 3,064 3,416 3,650 4,352 5,542 6,083 6,422 6,708 7,013 7,259 7,522 7,609 8,299 8,977 9,066 9,131 9,212 Adjusted Surplus/(Deficit) 000 USD (693) (668) (870) (741) (894) (1,449) 540 1,530 1,234 (236) (197) (171) 36 (354) (726) (504) (254) (14) CASH FLOW STATEMENT ITEM REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Cash Flow from Operating Activities Profit/(loss) from income statement 000 USD (693) (668) (870) (741) (894) (1,449) 540 1,530 1,234 (236) (197) (171) 36 (354) (726) (504) (254) (14) Adjust for non-cash items 000 USD Depreciation [2] 000 USD 0 4 17 25 84 135 143 227 322 418 521 611 556 602 698 724 742 760 Provision for debt write-off 363 1,198 1,018 873 692 614 662 398 397 339 353 368 382 397 413 428 444 460 Net adjusted income for the year 000 USD (330) 534 165 157 (119) (700) 1,346 2,155 1,953 521 677 808 974 645 384 648 932 1,206 Adjust for Change in Working Capital (Increase)/Decrease in debtors [3] 000 USD (726) (1,198) (1,018) (873) (692) (614) (662) (398) (397) (339) (353) (368) (382) (397) (413) (428) (444) (460) Partial debt recovery [4] 000 USD 0 2,315 2,555 36 60 51 44 35 31 33 20 20 17 18 18 19 20 21 Increase/(Decrease) in creditors [5] 000 USD 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Net change in working capital 000 USD (726) 1,117 1,537 (837) (632) (563) (619) (363) (366) (306) (333) (348) (365) (380) (394) (409) (424) (439) Cash Flow from Investment Activities Repayment of principal 000 USD 0 (12) (15) (15) (530) (1,024) (1,024) (1,024) (1,024) (1,024) (1,024) (1,024) (1,024) (1,479) (1,934) (1,934) (1,934) (1,934) Net change generaged by/(used in investment activit 000 USD 0 (12) (15) (15) (530) (1,024) (1,024) (1,024) (1,024) (1,024) (1,024) (1,024) (1,024) (1,479) (1,934) (1,934) (1,934) (1,934) Cash Flow Net increase/(decrease) in cash & equiv. 000 USD (1,057) 1,639 1,687 (695) (1,281) (2,287) (297) 768 563 (809) (681) (564) (415) (1,214) (1,944) (1,695) (1,427) (1,168) Cash & cash equiv. at beginning of year 000 USD 0 (1,057) 582 2,269 1,575 294 (1,993) (2,290) (1,522) (960) (1,769) (2,449) (3,014) (3,429) (4,642) (6,587) (8,282) (9,708) Cash & cash equivalents at end of year 000 USD (1,057) 582 2,269 1,575 294 (1,993) (2,290) (1,522) (960) (1,769) (2,449) (3,014) (3,429) (4,642) (6,587) (8,282) (9,708) (10,876) BALANCE SHEET (Simplified) ITEM REF UNIT 2013 2014 2015 2016 2017 2018 2019 2020 2021 2022 2023 2024 2025 2026 2027 2028 2029 2030 Assets Fixed Assets [6] Existing Plant & equipment 24,549 23,807 23,064 22,322 21,580 20,837 20,095 19,353 18,610 17,868 17,126 16,388 15,650 14,920 14,190 13,460 12,733 12,073 Future Plant & equipment 4,229 8,015 11,600 35,205 57,446 59,844 62,160 63,837 65,450 67,001 71,006 72,441 91,922 111,081 112,240 113,339 114,380 Total Fixed Assets 24,549 28,035 31,080 33,922 56,785 78,284 79,939 81,513 82,447 83,319 84,127 87,394 88,091 106,842 125,271 125,700 126,073 126,453 Current Assets & Liabilities Short term assets (cash) [7] (1,057) 582 2,269 1,575 294 (1,993) (2,290) (1,522) (960) (1,769) (2,449) (3,014) (3,429) (4,642) (6,587) (8,282) (9,708) (10,876) Debtors [8] 308 599 636 727 865 1,023 1,656 1,988 1,985 1,694 1,765 1,838 1,911 1,986 2,063 2,140 2,219 2,300 Creditors [9] (142) (190) (228) (269) (321) (389) (478) (573) (613) (667) (697) (732) (761) (799) (830) (854) (875) (899) Net Current Assets (891) 991 2,678 2,033 838 (1,358) (1,112) (107) 412 (741) (1,381) (1,907) (2,279) (3,455) (5,354) (6,995) (8,364) (9,476) Total Assets 23,658 29,027 33,758 35,955 57,623 76,925 78,827 81,406 82,859 82,578 82,746 85,487 85,813 103,387 119,918 118,705 117,709 116,977 Equity & Liabilites Equity [10] 23,658 28,799 33,485 35,697 47,589 58,035 60,961 64,564 67,042 67,785 68,978 72,743 74,093 84,047 93,412 94,134 95,072 96,275 Long Term liabilities [11] 0 228 273 258 10,034 18,890 17,866 16,842 15,817 14,793 13,769 12,744 11,720 19,340 26,505 24,571 22,637 20,702 Total Equity & Liabilities 23,658 29,027 33,758 35,955 57,623 76,925 78,827 81,406 82,859 82,578 82,746 85,487 85,813 103,387 119,918 118,705 117,709 116,977 notes for referenced items above: [1] Provisions to write off bad debt was set at 50 % in the base year and 100 % thereafter to gradually introduce the concept which does not appear to be ccarried out currently. [2] Depreciation for both existing and new assets is reflected here, as calculated in existing and Investment assets tabs and allocated as per the main cost table under the Cost tab. [3] Debtors are calculated as the difference between billing and cash collections for the respective year. [4] Partial debt recovery is calculated in the revenue table based on a small proportion of 3-year old debt recovered as cash collections. [5] With past history of deficit cash flow funded in part from creditors the entity has become uncreditworthy and future cash flow is based on a strictly cash on delivery basis, i.e. costs = expenditure. [6] The value of fixed assets is returned as the depreciated residual value of existing and investment assets calculated in the respective existing assets and investment assets tabs. [7] Accumulated cash reserves/(deficit) [8] Debtors as defined under note [3] [9] Asume two months worth of fixed costs (except personnel), variable and maintenance. [10] Balance of total assets and (less) long term liabilities. [11] The balance on loans is represented as long term liabilities. Gauff Ingenieure 4 of 4