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: 28/07/2021 | Sample Time: 11:30 | |
| Human Activities: None | Weather: Sunny and humid | Water Body: Torsa |
| Frequency Of Monitoring: Monthly | Use Based Class: B | Approximate Depth(Bottom/Table): 1.00 m |
| Color & Intensity: Moderately green and clear | Odour: Fishy | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| BOD | 1.20 | mg/l |
| Conductivity | 56.41 | µs/cm |
| Ammonia-N | 0.12 | mg/l |
| Potassium | 0.60 | mg/l |
| Sodium | 1.40 | mg/l |
| Sulphate | 8.13 | mg/l |
| Magnesium | 2.88 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.001 | mg/l |
| Total Alkalinity | 50.00 | mg/l |
| Total Dissolved Solids(TDS) | 28.00 | mg/l |
| Total Fixed Solids(TFS) | 282.00 | mg/l |
| Total Hardness as CaCo3 | 36.00 | mg/l |
| Total Suspended Solids(TSS) | 16.00 | mg/l |
| Turbidity | 212.00 | NTU |
| Dissolved O2(DO) | 6.90 | mg/l |
| Fecal Coliform | 2700 | MPN/100ml |
| Fecal Streptococci | 17 | MPN/100ml |
| Nitrate-N | 0.09 | mg/l |
| pH | 6.98 | Unit |
| Temperature(Water) | 28 | ⁰C |
| Total Coliform | 11000 | MPN/100ml |
| Boron | 1.39 | mg/l |
| Calcium | 10.42 | mg/l |
| Chloride | 13.69 | mg/l |
| COD | 17.00 | mg/l |
| Fluoride | BDL | mg/l |