West Bengal Pollution Control Board |
Siliguri Laboratory |
Paribesh Bhawan, Paribahan Nagar, P.O. Matigara, Siliguri,Darjeeling 734 428. |
Station: Water Reservior St. Helens School | River Basin: GANGA | CPCB Station Code: 4725 |
Sample Date: 17/09/2019 | Sample Time: 11:00 Hrs | |
Human Activities: None | Weather: Cloudy | Water Body: Lake |
Frequency Of Monitoring: Monthly | Use Based Class: B | Approximate Depth(Bottom/Table): 1.00 m |
Color & Intensity: Light green and clear | Odour: None | Visible effluent discharge: None |
Water Quality | ||
---|---|---|
Parameter | Test Result | Unit |
Conductivity | 32.4 | µs/cm |
Dissolved O2(DO) | 7.10 | mg/l |
Fecal Coliform | 90 | MPN/100ml |
Nitrate-N | 0.56 | mg/l |
BOD | 1.50 | mg/l |
Total Coliform | 170 | MPN/100ml |
Calcium | 7.21 | mg/l |
Chloride | 6.85 | mg/l |
COD | 10.71 | mg/l |
Fluoride | 0.23 | mg/l |
Magnesium | 0.578 | mg/l |
Phenolpthalein Alkanity | NIL | mg/l |
Phosphate-P | 0.093 | mg/l |
Potassium | BDL | mg/l |
Sodium | 1.10 | mg/l |
Sulphate | 2.32 | mg/l |
Total Alkalinity | 48.00 | mg/l |
Total Dissolved Solids(TDS) | 18.0 | mg/l |
Temperature | 16 | ⁰C |
pH | 6.80 | Unit |
Boron | 0.003 | mg/l |
Total Fixed Solids(TFS) | 12.00 | mg/l |
Total Hardness as CaCo3 | 16.0 | mg/l |
Ammonia-N | BDL | mg/l |
Total Suspended Solids(TSS) | 16.00 | mg/l |
Turbidity | 1.34 | NTU |
Total Kjeldahl Nitrogen(TKN) | mg/l |