Table 5 - 9 in Saidabad Water Treatment Plant Project, Phase III

Table 5-9: Water Quality Test Results from water bodies within the project area (Original Table 23) Sl. No.Water Quality ParameterUnitConcentration presentInland Water Quality Standard (ECR’97)Old Brahmaputra RiverDND Conveyance canal/Shitalakshya riverMay'22Sep’22Oct'13May'22Sep’22Oct'131pH-7.437.247.097.277.027.226.5-8.52Colour (True)Pt-Co40.881.92813.214919--3TurbidityNTU1.614.784.110.9479.59.52--4Total Dissolved Solids (TDS)mg/L31021411921214113921005Electrical Conductivity (EC) at 25oCµS/cm51873121035430823812006Dissolved Oxygen (DO)mg/L4.651.32 <34.791.482.674.55≥ 5b, d, e, f, ≥ 6a, c7Nitrate (NO3- N)mg/L3.460.76.28<31.8108Ammonia (NH3-N)mg/L1.52.110.350.751.110.2859Phosphate (PO4)mg/L1.881.230.3331.821.160.464--10Sulphate (SO4)mg/L4718.211.421.414.39.4--11Total Suspended Solids (TSS)mg/L6714410231981015012Chemical Oxygen Demand (COD)mg/L12.222.5928.29.8720013Biochemical Oxygen Demand (BOD5)mg/L5.798.51.212.63.853.8≤ 2a, ≤ 3b, ≤ 6c, d, ≤ 10e, f14Oil & GreaseMg/L<2<2-<2<2-10 a: to be usable as a source of water supply only after disinfection; b: to be usable for recreational activity c: to be usable as a source of water supply after conventional treatment; d: to be usable for fisheries e: to be usable for various process and cooling industries; f: to be usable for irrigation