Table 5 - 7 in Saidabad Water Treatment Plant Project, Phase III

Table 5-7: Water Quality Test Results from Meghna River at Haria, Baidder Bazar, Sonargaon, Narayanganj (Original Table 21) Sl. No.Water Quality ParameterUnitConcentration presentInland Water Quality Standard (Schedule-3 (A) & Schedule-10 of ECR’97)Sample Collected during ESIA update (19th May 2022)First Sample (collected 13th July 2013)Second Sample (collected 24th August 2013)Third Sample (collected 28th September 2013)1pH-7.817.037.266.926.5-8.52Colour (Apparent)Pt-Co6215985--3Colour (True)Pt-Co29.2131915--4TurbidityNTU11.76.8717.113--5Total Hardnessmg/L as CaCO3162036--6Chloride (Cl-)mg/L1077--7Total Dissolved Solids (TDS)mg/L9435202721008Iron (Fe)mg/L0.380.440.32--9Total Coliform (TC)CFU/100 mL39020134≤ 50a, ≤ 200b,≤ 200b,≤ 200b, ≤ 1000f,≤ 5000c, e10Faecal Coliform (FC)CFU/100 ml21020110--11Electrical Conductivity (EC) at 25oCµS/cm87.9585368120012Dissolved Oxygen (DO)mg/L6.747.665.25, 4.5-8.013Alkalinitymg/L as CaCO3212530--14Nitrate (NO3-N)mg/L<30.40.20.41015Ammonium (NH4-N)mg/L0.2300.3540.274--16Ammonia (NH3-N)mg/L0.650.0010.0040.001517Phosphate (PO4)mg/L0.680.0670.0810.121--18Sulphate (SO4)mg/L8.828.6<7<7--19Total Suspended Solids (TSS)mg/L5711132415020Temperature°C30.230.330.8--21Chemical Oxygen Demand (COD)mg/L4.7878.520022Biochemical Oxygen Demand (BOD5)mg/L1.7810.40.6≤ 2a, ≤ 3b,≤ 6c, d, ≤ 10e, f23Chlorophyll-aµg/L--2.70.3--24Lead (Pb)mg/L<0.010.0340.032--0.125Cadmium (Cd)mg/L0.0020.0020.001--0.526Chromium (Cr)mg/L0.0050.0050.003--0.527Zinc (Zn)mg/L0.0510.0280.017--528Mercury (Hg)mg/L<0.0001<0.0001<0.0001--0.0129Oil & Greasemg/L<2---7.110 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