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: 22/07/2022 | Sample Time: 09:45 | |
Human Activities: None | Weather: Cloudy,Foggy and Rainy. | 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: Fishy | Visible effluent discharge: None |
Water Quality | ||
---|---|---|
Parameter | Test Result | Unit |
Ammonia-N | BDL | mg/l |
BOD | 1.90 | mg/l |
Conductivity | 23.84 | µs/cm |
Dissolved O2(DO) | 6.30 | mg/l |
Fecal Coliform | 90 | MPN/100ml |
Nitrate-N | 0.02 | mg/l |
pH | 7.90 | Unit |
Temperature(Water) | 12 | ⁰C |
Total Coliform | 220 | MPN/100ml |
Boron | 1.59 | mg/l |
Calcium | 4.00 | mg/l |
Chloride | 1.95 | mg/l |
COD | 17.00 | mg/l |
Fluoride | 0.27 | mg/l |
Magnesium | 0.48 | mg/l |
Phenolpthalein Alkanity | NIL | mg/l |
Phosphate-P | BDL | mg/l |
Potassium | 0.80 | mg/l |
Sodium | 2.50 | mg/l |
Sulphate | 5.39 | mg/l |
Total Alkalinity | 14.00 | mg/l |
Total Dissolved Solids(TDS) | 10.00 | mg/l |
Total Fixed Solids(TFS) | 16.00 | mg/l |
Total Hardness as CaCo3 | 12.00 | mg/l |
Total Suspended Solids(TSS) | 7.00 | mg/l |
Turbidity | 3.02 | NTU |