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: 06/11/2020 | Sample Time: 15:45 | |
| 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: Moderately green and clear | Odour: Odour Free | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| pH | 7.61 | Unit |
| Temperature(Water) | 11 | ⁰C |
| Total Alkalinity | 12.00 | mg/l |
| Total Dissolved Solids(TDS) | 50.00 | mg/l |
| Total Hardness as CaCo3 | 8.00 | mg/l |
| Total Suspended Solids(TSS) | 32.00 | mg/l |
| Fluoride | BDL | mg/l |
| Turbidity | 3.58 | NTU |
| Nitrate-N | 0.001 | mg/l |
| BOD | 1.30 | mg/l |
| Conductivity | 16.71 | µs/cm |
| Dissolved O2(DO) | 8.20 | mg/l |
| Fecal Coliform | 120 | MPN/100ml |
| Ammonia-N | 0.15 | mg/l |
| Total Coliform | 270 | MPN/100ml |
| Calcium | 1.60 | mg/l |
| Chloride | 40.89 | mg/l |
| Boron | 0.48 | mg/l |
| Magnesium | 1.15 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| COD | 8.0 | mg/l |
| Potassium | BDL | mg/l |
| Sodium | 1.40 | mg/l |
| Phosphate-P | 0.005 | mg/l |
| Sulphate | 0.43 | mg/l |
| Total Fixed Solids(TFS) | 10.00 | mg/l |