Second Tashkent Province Water Supply Development Project (RRP UZB 51240) Supplementary Document Project Technical Analysis __________________________________________________________________________ Document stage: Final Project number: 51240-001 June 2018 Second Tashkent Province Water Supply Development Project Abbreviations ADB Asian Development Bank ADF Asian Development Fund asl Above sea level CI Cast Iron CSA Communal Services Agency of Uzbekistan CPS Country’s Partnership Strategy DCM Decree of the Cabinet of Ministers DI Ductile Iron DMA District Metering Area EA Executing Agency FMA Financial Management Assessment FS Feasibility Study GOU Government of Uzbekistan HDPE High Density Polyethylene ICB International Competitive Bidding lpcd Liters per Capita and per Day MOH Ministry of Health MHCS Ministry of Housing and Communal Services NAPM National Agency of Project Management NCB National Competitive Bidding ND Nominal Diameter NRW Non Revenue Water OCC Operational Control Center O&M Operation and Maintenence PCU Project Coordination Unit PLC Programmable Logic Controller PE Polyethylene PSA Poverty and Social Assessment PMU Project management Unit PPTA Project Preparatory Technical Assistance QBS Quality Based Selection QCBS Quality- And Cost Based Selection RRP Report And Recommendation Of The President To The Board SBD Standard Bidding Documents SCADA Supervisory Control and Data Acquisition SES Sanitary and Epidemiological services STPWSDP Second Tashkent Province Water Supply Development Project TDS Total Dissolved Solids TOR Terms of Reference TPS Tashkent Provincial Suvokova UZS Uzbekistan Sum WDC Water distribution center WSS Water Supply and Sanitation WTP Water Treatment Plant Contents 1 INTRODUCTION ....................................................................................... 1 1.1 Rationale ................................................................................................................. 1 1.2 Scope ...................................................................................................................... 2 1.3 Brief History ............................................................................................................. 2 1.4 Compatibility with National Strategy in the Water Supply Sector .............................. 3 1.5 Undertakings and Staff ............................................................................................ 3 2 OPERATIONAL STATUS AND ASSESSMENT OF THE TASHKENT PROVINCIAL “SUVOKOVA” .................................................................... 4 2.1 Territorial and Administrative Settings ...................................................................... 4 2.2 WSS Sector Governance ......................................................................................... 4 2.3 Ministry of Housing and Communal Services (MHCS) ............................................. 5 2.4 Communal Services Agency (CSA) ......................................................................... 7 2.5 The State Inspectorate for Control on Usage of Drinking Water under the Cabinet of Ministers .............................................................................................................. 7 2.6 The Bureau of Enforcements under the General Prosecutor's Office ....................... 8 2.7 The National Agency for Project Management under the President of the Republic of Uzbekistan ........................................................................................................... 9 2.8 The State Committee on Investments .....................................................................10 2.9 Other Governing Bodies .........................................................................................10 2.10 Tashkent Provincial Suvokova (TPS), Management and Staffing ...........................10 3 THE PROJECT AREA AND POPULATION ........................................... 12 3.1 The Project Area .....................................................................................................12 3.2 Population Projections and Water Demand ............................................................16 4 GROUNDWATER OCCURRENCE IN THE PROJECT AREA ............... 17 4.1 Groundwater Survey ...............................................................................................17 4.2 Climatological Data .................................................................................................17 4.3 General Hydrogeological Features of the Project Area ...........................................17 4.3.1 Aquifer Identification ...............................................................................................17 4.3.2 Previous Investigations ...........................................................................................18 4.4 Wellfield VU-1 .........................................................................................................18 4.4.1 Summary of Information from Previous Investigations ............................................18 4.4.2 Re-Assessment of the Long-Term Yield of the VU-1 Wellfield ................................19 5 ASSESSMENT OF THE EXISTING WATER SUPPLY INFRASTRUCTURE SERVICES WITHIN THE PROJECT AREA .......... 21 5.1 Brief Assessment of Overall Water Supply in Yangiyul and Chinaz ........................21 5.1.1 Sources of Water Supply ........................................................................................21 5.1.2 Yangiyul District ......................................................................................................21 5.1.3 Chinaz District ........................................................................................................23 5.1.4 The Existing VU-1 to Chinaz Transmission Main ....................................................24 5.1.5 The Distribution System ..........................................................................................25 5.2 Water Service and Consumption ............................................................................25 5.2.1 Service Coverage ...................................................................................................25 5.2.2 Water Production Based on Sales ..........................................................................28 5.2.3 Water Consumption ................................................................................................28 5.2.4 Level of Service ......................................................................................................30 5.2.5 Quality of Water Supply ..........................................................................................31 5.2.6 Waterborne Disease-Related Data .........................................................................37 5.2.7 Water Tariffs ...........................................................................................................39 5.3 Overall Assessment for the Project Area ................................................................40 6 TECHNICAL ASSESSMENT OF WASTEWATER IN TASHKENT PROVINCE ........................................................................................... ...42 6.1 General Overview ...................................................................................................42 6.2 Institutional Overview of Wastewater Services ........................................................44 6.3 Overview of Physical Wastewater Infrastructure in Tashkent Province ...................45 6.4 Overview of Wastewater in the 6 Major Cities of Tashkent Province .......................49 6.4.1 Angren City .............................................................................................................49 6.4.2 Akhangaran City .....................................................................................................51 6.4.3 Chirchik City ...........................................................................................................52 6.4.4 Almalik City .............................................................................................................54 6.4.5 Bekabad City ..........................................................................................................56 6.4.6 Yangiyul City ...........................................................................................................57 6.5 Review of Wastewater in the 14 Districts of Tashkent Province ..............................59 6.5.1 Bustonlik District .....................................................................................................59 6.5.2 Akhangaron District ................................................................................................59 6.5.3 Parkent District .......................................................................................................59 6.5.4 Piskent District ........................................................................................................59 6.5.5 Tashkent District .....................................................................................................59 6.5.6 Zangiota District ......................................................................................................60 6.5.7 Kibray District .........................................................................................................60 6.5.8 Kuyichirchik District .................................................................................................60 6.5.9 Urtachirchik District .................................................................................................60