DETAILED PROJECT REPORT January 2021 CONSULTANCY SERVICES FOR “CARRYING OUT CONSUMER SURVEY AND WATER AUDIT OF NAGPUR WATER SUPPLY SCHEME (FOR WATER REFORM WORKS)” CLIENT CONSULTANT Nagpur Municipal Corporation CEINSYS TECH LTD 10/5, IT Park, Opposite VNIT, Nagpur 440022, Maharashtra, India 1 | P a g e Ceinsys Tech Ltd DPR on Water Audit of NMC WSS TABLE OF CONTENTS EXECUTIVE SUMMARY ........................................................................................................................ 9 1 INTRODUCTION ............................................................................................................................. 4 NAGPUR CITY .............................................................................................................................. 4 CITY STATISTICS ........................................................................................................................... 5 2 EXISTING WATER SUPPLY SYSTEM SCENARIO ...................................................................... 6 BACKGROUND ............................................................................................................................. 6 EXISTINGWATER SUPPLY SITUATION ................................................................................................ 6 EXISTING SOURCE OF WATER SUPPLY .............................................................................................. 7 WATER TREATMENT PLANTS ......................................................................................................... 9 STORAGE RESERVOIRS ................................................................................................................ 11 DISTRIBUTION SYSTEM ............................................................................................................... 12 3 OBJECTIVE AND SCOPE OF THE PROJECT ........................................................................... 14 OBJECTIVE OF THE PROJECT ......................................................................................................... 14 SCOPE OF WORK ....................................................................................................................... 14 4 EARLIER SUBMISSIONS TO NMC ............................................................................................. 16 INCEPTION REPORT .................................................................................................................... 16 REPORT ON RAW WATER TRANSMISSION LOSSES ............................................................................ 16 REPORT ON TREATMENT AND PURE WATER TRANSMISSION LOSS UPTO MBR .................................... 16 SUBMISSION OF COMPUTERIZED CONSUMER SURVEY DATA ............................................................. 16 DEFICIENCY REPORT ................................................................................................................... 16 SUBMISSION OF ANALYSIS OF CONSUMER DATA AND REPORT ON COMPUTERIZED DATA ....................... 16 DRAFT DPR .............................................................................................................................. 16 FINAL DETAILED PROJECT REPORT (DPR) ...................................................................................... 16 5 CONSUMER SURVEY ................................................................................................................. 17 OBJECTIVES .............................................................................................................................. 17 INPUTS FROM CLIENT ................................................................................................................. 17 CONSUMER SURVEY PROCESS ...................................................................................................... 17 1 | P a g e Ceinsys Tech Ltd DPR on Water Audit of NMC WSS GEOSPATIAL DATA INTEGRATION: ................................................................................................ 22 ADVANTAGES OF GIS ................................................................................................................. 25 PROJECT AREA & SURVEYED PROPERTIES: ..................................................................................... 26 6 NON-REVENUE WATER (NRW) AT A GLANCE ........................................................................ 32 INTRODUCTION ......................................................................................................................... 32 NRW LEVELS IN THE WORLD ....................................................................................................... 32 NRW LEVELS IN INDIA ................................................................................................................ 32 NRW LOSSES .......................................................................................................................... 33 7 BENEFITS OF NRW REDUCTION .............................................................................................. 36 INCREASED REVENUE .................................................................................................................. 36 ENERGY CONSERVATION ............................................................................................................. 36 REDUCED CARBON FOOTPRINT .................................................................................................... 37 SOCIAL AND ENVIRONMENTAL BENEFITS........................................................................................ 37 CAUSES OF WATER LOSSES ......................................................................................................... 37 APPARENT LOSSES ..................................................................................................................... 38 ESTABLISHING WATER BALANCE .................................................................................................. 39 8 STANDARD NRW REDUCTION STRATEGY ............................................................................. 42 2 | P a g e Ceinsys Tech Ltd DPR on Water Audit of NMC WSS BASE MAP AND AUDIT ............................................................................................................... 43 PERFORM WATER AUDIT / BALANCE AND SET WATER LOSS TARGET .................................................. 44 SOURCE SIDE R & M AND METERING ........................................................................................... 45 CONSUMER SIDE METERING ........................................................................................................ 47 BILLING AND TARIFF RATIONALIZATION ......................................................................................... 49 FIND ILLEGAL CONNECTIONS ........................................................................................................ 51 CORRECT METERING AND BILLING ERRORS .................................................................................... 51 REAL LOSS REDUCTION ............................................................................................................... 52 ASSESS CURRENT LEAKAGE .......................................................................................................... 54 FLOW/PRESSURE MONITORING ................................................................................................... 56 3 | P a g e Ceinsys Tech Ltd DPR on Water Audit of NMC WSS 9 BULK WATER AUDIT FOR WATER SUPPLY SYSTEM OF NMC ............................................ 59 OVERALL SYSTEM LOSSES UPTO ESRS/GSRS/DT ............................................................................ 59 10 FORMATION OF STUDY AREA FOR WATER AUDIT ............................................................... 64 FORMATION OF SAMPLE STUDY AREAS FOR NMC WSS: ................................................................. 64 CONSUMER SURVEY ................................................................................................................... 64 TOTAL CONSUMER CONNECTIONS IN THE CITY ............................................................................... 65 PART-1 ASHI NAGAR DMA ......................................................................................................... 66 PART-2 SAMPLE STUDY AREAS IN NAGPUR CITY .............................................................................. 69 EXTRAPOLATION OF RESULTS TO ENTIRE CITY ................................................................................. 70 11 WATER BALANCE ...................................................................................................................... 71 DETERMINING SYSTEM INPUT VOLUME ......................................................................................... 71 AUTHORIZED CONSUMPTION ....................................................................................................... 72 WATER LOSSES ......................................................................................................................... 76 OVERVIEW OF NRW LEVELS ........................................................................................................ 82 12 BASELINE INFORMATION OF THE SYSTEM ........................................................................... 83 NEED FOR SERVICE LEVEL BENCHMARKS .............................................................................. 83 4 | P a g e Ceinsys Tech Ltd DPR on Water Audit of NMC WSS COMPARISON OF EXISTING WATER