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: 16/03/2022 | Sample Time: 11:10 | |
| Human Activities: None | Weather: Sunny and Clear. | Water Body: Torsa |
| Frequency Of Monitoring: Monthly | Use Based Class: B | Approximate Depth(Bottom/Table): 1.00 m |
| Color & Intensity: Light Green and moderately turbid | Odour: Fishy | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Ammonia-N | 0.14 | mg/l |
| BOD | 1.10 | mg/l |
| Conductivity | 107.90 | µs/cm |
| Dissolved O2(DO) | 8.70 | mg/l |
| Fecal Coliform | 2200 | MPN/100ml |
| Fecal Streptococci | 24 | MPN/100ml |
| Nitrate-N | 1.87 | mg/l |
| pH | 7.76 | Unit |
| Temperature(Water) | 21 | ⁰C |
| Total Coliform | 5000 | MPN/100ml |
| Boron | 1.59 | mg/l |
| Calcium | 16.80 | mg/l |
| Chloride | 6.84 | mg/l |
| COD | 19.20 | mg/l |
| Fluoride | BDL | mg/l |
| Magnesium | 3.88 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.008 | mg/l |
| Potassium | BDL | mg/l |
| Sodium | 1.30 | mg/l |
| Sulphate | 11.12 | mg/l |
| Total Alkalinity | 52.00 | mg/l |
| Total Dissolved Solids(TDS) | 59.00 | mg/l |
| Total Fixed Solids(TFS) | 110.00 | mg/l |
| Total Hardness as CaCo3 | 58.00 | mg/l |
| Total Suspended Solids(TSS) | 21.00 | mg/l |
| Turbidity | 8.70 | NTU |