THE REPUBLIC OF THE UNION OF MYANMAR YANGON CITY DEVELOPMENT COMMITTEE (YCDC) PREPARATORY SURVEY FOR GREATER YANGON WATER SUPPLY IMPROVEMENT PROJECT (PHASE II) FINAL REPORT FEBRUARY 2017 JAPAN INTERNATIONAL COOPERATION AGENCY TEC INTERNATIONAL CO., LTD. NIPPON KOEI CO., LTD. NJS CONSULTANTS CO., LTD. 1R JR（先） 17-030 THE REPUBLIC OF THE UNION OF MYANMAR YANGON CITY DEVELOPMENT COMMITTEE (YCDC) PREPARATORY SURVEY FOR GREATER YANGON WATER SUPPLY IMPROVEMENT PROJECT (PHASE II) FINAL REPORT FEBRUARY 2017 JAPAN INTERNATIONAL COOPERATION AGENCY TEC INTERNATIONAL CO., LTD. NIPPON KOEI CO., LTD. NJS CONSULTANTS CO., LTD. Foreign Exchange Rate 1 USD = 109.2 JPY 1 USD = 1183.0 Kyat 1 Kyat = 0.0923 JPY (As of July 2016) Preparatory Survey for Greater Yangon Water Supply Improvement Project (Phase II) FINAL REPORT Location Map i Preparatory Survey for Greater Yangon Water Supply Improvement Project (Phase II) FINAL REPORT Phase 1 Feasibility Study: Target Zone 7 and 8 Phase 2 Feasibility Study: Target Zone 1 and 9 Map of 33 townships in YCDC Area and 10 Water Supply Zones ii Preparatory Survey for Greater Yangon Water Supply Improvement Project (Phase II) FINAL REPORT PREPARATORY SURVEY FOR GREATER YANGON WATER SUPPLY IMPROVEMENT PROJECT (PHASE2) Location Map Map of 33 townships in YCDC Area and 10 Water Supply Zones Table of Contents List of Tables/ Figures Appendices List of Abbreviations Abbreviation for The Relevant Studies Unit TABLE OF CONTENTS CHAPTER 1 INTRODUCTION ....................................................................................................1-1 1.1 Background of The Study ......................................................................................................1-1 1.1.1 Water Supply Service .......................................................................................................1-1 1.1.2 Master Plan (MP) and Feasibility Study (FS)...................................................................1-2 1.1.3 Japanese ODA Loan Project (Phase 1) - Lagunbyin Water Supply System .....................1-2 1.1.4 Feasibility Studies Regarding Kokkowa Water Supply System .......................................1-4 1.2 Outline of Phase 2 Project......................................................................................................1-4 1.3 Outline of This Study .............................................................................................................1-5 CHAPTER 2 CHARACTERISTICS OF YANGON CITY ..........................................................2-1 2.1 Natural Condition ..................................................................................................................2-1 2.1.1 Topography .......................................................................................................................2-1 2.1.2 Geology ............................................................................................................................2-2 2.1.3 Meteorology .....................................................................................................................2-2 2.1.4 Hydrology .........................................................................................................................2-3 2.1.5 Hydrogeology ...................................................................................................................2-6 2.2 Wastewater Management Services.........................................................................................2-6 2.2.1 Existing Wastewater Management Services .....................................................................2-6 2.2.2 Outline of Development Policies on The MP ...................................................................2-7 2.2.3 Priorities of Tasks To Be Implemented by YCDC ............................................................2-9 2.3 Current State of Poverty Group ...........................................................................................2-10 CHAPTER 3 REVIEW OF MASTER PLAN ...............................................................................3-1 3.1 Outline of The Master Plan ....................................................................................................3-1 3.1.1 Major Technical Issues of Water Supply Service .............................................................3-1 i Preparatory Survey for Greater Yangon Water Supply Improvement Project (Phase II) FINAL REPORT 3.1.2 Service Level Targets .......................................................................................................3-1 3.1.3 Non-revenue Water Ratio .................................................................................................3-2 3.1.4 Population and Water Demand .........................................................................................3-2 3.1.5 Water Source .....................................................................................................................3-3 3.1.6 Policy of Water Supply Plan .............................................................................................3-4 3.1.7 Water Supply Facility Plan ...............................................................................................3-5 3.2 Review of Planning Framework ............................................................................................3-9 3.2.1 Population Growth ..........................................................................................................3-10 3.2.2 Current Population and Overall Population ....................................................................3-15 3.2.3 Population Allocation .....................................................................................................3-16 3.2.4 Water Demand by Township ...........................................................................................3-21 3.2.5 Water Demand by Water Supply Zone ...........................................................................3-28 3.3 Review of Water Allocation .................................................................................................3-29 3.3.1 Supply Capacity Development .......................................................................................3-29 3.3.2 New Water Source (Pan Hlaing River) ...........................................................................3-29 3.3.3 Revised Supply Capacity Development .........................................................................3-30 3.3.4 Water Allocation to 10 Zones .........................................................................................3-32 3.3.5 Revised Main Water Supply Facilities ............................................................................3-35 3.4 Necessity of The Project ......................................................................................................3-38 CHAPTER 4 WATER TREATMENT PLANT .............................................................................4-1 4.1 Planning Conditions ...............................................................................................................4-1 4.1.1 Completed/ On-going Plan Related to Kokkowa Project .................................................4-1 4.1.2 Expansion Plan of Kokkowa WTP ...................................................................................4-1 4.1.3 Land Acquisition Status of YCDC ...................................................................................4-2 4.1.4 Appropriateness of The Site Location ..............................................................................4-4 4.1.5 Setting of Intake Location ..............................................................................................4-10 4.1.6 Water Quality and Treatment Process .............................................................................4-13 4.2 Planning Policy of WTP ......................................................................................................4-18 4.3 Intake Facility ......................................................................................................................4-22 4.3.1 Planning Policy ...............................................................................................................4-22 4.3.2 Proposed Capacities ........................................................................................................4-24 4.3.3 Intake Point and Leading Canal ......................................................................................4-24 4.3.4 Intake Gate ......................................................................................................................4-24 4.3.5 Pre-sedimentation Pond ..................................................................................................4-25 4.3.6 Lift Pumping Equipment ................................................................................................4-26 4.4 Treatment Facility ................................................................................................................4-35 4.4.1 Proposed Facilities for WTP ...........................................................................................4-35 4.4.2 Treatment Process ...........................................................................................................4-35 ii Preparatory Survey for Greater Yangon Water Supply Improvement Project (Phase II) FINAL REPORT 4.4.3 Receiving Well cum Rapid Mixing Basin ......................................................................4-36