Dilip Meshram, Nikunj Pathak, Satish Sawale, Viji John, Dr. G.K. Khadse, Dr. Pawan Labhasetwar Water Technology and Management Division CSIR-National Environmental Engineering Research Institute (NEERI), Nehru Marg, Nagpur-440020 General Outline Salient Features of Water Supply Scheme for Amravati City Sampling and analysis at field Water Quality Standards Physicochemical Water quality Microbial Water Quality Risks of Contamination of Water Conclusions Acknowledgements Salient Features of Water Supply Scheme for Amravati City Location of Amravati city : 77045” E 20055” N Population of Amravati city: 0.65 million Maintenance of scheme: Maharashtra Jeevan Pradhikaran (MJP) Scheme commissioned year: 1990 Supply of treated water in 20 hours : 78 MLD Per capita supply of water (in LPCD) : 120 Continuity of water supply (in hours per day): 4-5 Number of operation zones: 16 Presently adopted approach to water supply: 24x7 Water Supply System Description Source of Amravati water supply scheme: Upper Wardha Dam Storage capacity of the Source: 614.8 mcm Water Treatment Plant Master Balancing Reservoir Elevated Service Reservoirs Sampling and analysis at field DRINKING WATER QUALITY STANDARDS Key parameters Units BIS 10500-2012 Standards for Drinking(Desirable Limit) pH - 6.5 to 8.5 Total alkalinity as CaCO3 mg/L 200 Total hardness as CaCO3 mg/L 200 Calcium as Ca mg/L 75 Magnesium as Mg mg/L 30 Total dissolved solids mg/L 500 Chloride as Cl- mg/L 250 — Sulphate as SO4 mg/L 200 - Nitrate as NO3 mg/L 45 Fluoride as F- mg/L 1 Free residual chlorine mg/L 0.2 Water Quality based on Physicochemical Parameters Water Quality at Source and WTP 200 184 175 180 170 160 140 Reservoir 140 132 124 120 100 Inlet of 80 Treatment Plant 60 40 33.6 32 32 MBR 22 19.419.4 17.5 16 20 20 13.8 9.6 10.8 4.7 1.1 3 0.240.2 0.19 0 Total Calcium as Magnesium Total Chloride as Sulphate as Nitrate as Fluoride as Alkalinity as Ca2+ as Mg2+ Dissolved Cl- SO42- NO3- F- CaCO3 Solids Microbial water quality Bacteriological water quality in distribution system 20 0.5 18 17 0.45 0.45 0.42 16 0.4 0.4 0.4 0.37 0.37 0.35 12 0.3 0.29 TC 0.25 0.22 CFU/100mL 8 FC 0.2 Free Cl 0.15 4 4 0.1 0.1 2 2 0.05 0 0 0.02 0 0 0 0 0 Saturna Saturna Wadali Wadali Nagpuri Nagpuri Arjun Arjun Sai Nagar Sai Nagar ESR Tail end ESR Tail end Gate ESR Gate Tail Nagar Nagar ESR Tail end end ESR Tail end Bacteriological water quality at 24x7 supply zones 2 1.5 1 Free chlorine (ppm) 0.5 TC (CFU/100 mL) 0 Arjun Nagar ESR Arjun Nagar Tail end Sainagar ESR Sainagar Tail end Risks of contamination of water Conclusions No significant change in physico-chemical parameters 32% samples tested positive for bacteriological contamination Reasons for water contamination- back suction through leakages, damages, defective joints in the supply lines, unhygienic condition at consumer ends Acknowledgements CSIR-National Enviromental Engineering Research Institute(NEERI), Nagpur, India The University of Oklahoma, USA THANK YOU .