West Bengal Pollution Control Board |
Siliguri Laboratory |
Paribesh Bhawan, Paribahan Nagar, P.O. Matigara, Siliguri,Darjeeling 734 428. |
| Station: River Torsa at Hasimara | River Basin: GANGA | CPCB Station Code: 4724 |
| Sample Date: 25/11/2021 | Sample Time: 11:30 | |
| Human Activities: None | Weather: Sunny and Clear. | Water Body: Torsa |
| Frequency Of Monitoring: Monthly | Use Based Class: B | Approximate Depth(Bottom/Table): 1.50 m |
| Color & Intensity: Light Green and moderately turbid | Odour: Fishy. | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Ammonia-N | 0.17 | mg/l |
| BOD | 1.20 | mg/l |
| Conductivity | 76.61 | µs/cm |
| Dissolved O2(DO) | 8.30 | mg/l |
| Fecal Coliform | 1300 | MPN/100ml |
| Fecal Streptococci | 48 | MPN/100ml |
| Nitrate-N | 0.08 | mg/l |
| pH | 7.95 | Unit |
| Temperature(Water) | 18 | ⁰C |
| Total Coliform | 2700 | MPN/100ml |
| Boron | 7.79 | mg/l |
| Calcium | 20.04 | mg/l |
| Chloride | 10.76 | mg/l |
| COD | 24.0 | mg/l |
| Fluoride | 0.11 | mg/l |
| Magnesium | 3.45 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.002 | mg/l |
| Potassium | 0.80 | mg/l |
| Sodium | 1.00 | mg/l |
| Sulphate | 6.94 | mg/l |
| Total Alkalinity | 62.00 | mg/l |
| Total Dissolved Solids(TDS) | 38.0 | mg/l |
| Total Fixed Solids(TFS) | 116.00 | mg/l |
| Total Hardness as CaCo3 | 62.00 | mg/l |
| Total Suspended Solids(TSS) | 37.00 | mg/l |
| Turbidity | 21.30 | NTU |