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: 21/02/2022 | Sample Time: 11:50 | |
| Human Activities: None | Weather: Cloudy and Rainy. | 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: Moderate |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Ammonia-N | BDL | mg/l |
| BOD | 1.70 | mg/l |
| Conductivity | 90.45 | µs/cm |
| Dissolved O2(DO) | 8.50 | mg/l |
| Fecal Coliform | 20 | MPN/100ml |
| Fecal Streptococci | 46 | MPN/100ml |
| Nitrate-N | 0.66 | mg/l |
| pH | 7.14 | Unit |
| Temperature(Water) | 14 | ⁰C |
| Total Coliform | 340 | MPN/100ml |
| Boron | 0.89 | mg/l |
| Calcium | 17.63 | mg/l |
| Chloride | 4.89 | mg/l |
| COD | 8.32 | mg/l |
| Fluoride | 0.11 | mg/l |
| Magnesium | 5.76 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.009 | mg/l |
| Potassium | 0.60 | mg/l |
| Sodium | 1.10 | mg/l |
| Sulphate | 10.58 | mg/l |
| Total Alkalinity | 48.00 | mg/l |
| Total Dissolved Solids(TDS) | 59.00 | mg/l |
| Total Fixed Solids(TFS) | 22.00 | mg/l |
| Total Hardness as CaCo3 | 64.00 | mg/l |
| Total Suspended Solids(TSS) | 24.00 | mg/l |
| Turbidity | 6.92 | NTU |