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: 18/12/2019 | Sample Time: 11:50 Hrs | |
| Human Activities: Fishing. | 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 Sunny. | Odour: Fishy. | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Dissolved O2(DO) | 7.20 | mg/l |
| Temperature | 19 | ⁰C |
| Total Coliform | 7000 | MPN/100ml |
| Nitrate-N | 0.94 | mg/l |
| Boron | 0.018 | mg/l |
| Fluoride | 0.12 | mg/l |
| Magnesium | 4.61 | mg/l |
| Calcium | 14.43 | mg/l |
| pH | 7.86 | Unit |
| COD | 37.00 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.026 | mg/l |
| Potassium | 1.50 | mg/l |
| Sodium | BDL | mg/l |
| Sulphate | 17.53 | mg/l |
| Total Alkalinity | 50.00 | mg/l |
| Fecal Coliform | 3000 | MPN/100ml |
| Chloride | 10.76 | mg/l |
| Conductivity | 86.85 | µs/cm |
| Total Fixed Solids(TFS) | 20.00 | mg/l |
| BOD | 1.80 | mg/l |
| Ammonia-N | BDL | mg/l |
| Total Dissolved Solids(TDS) | 48.00 | mg/l |
| Total Hardness as CaCo3 | 52.00 | mg/l |
| Total Suspended Solids(TSS) | 22.00 | mg/l |
| Turbidity | 4.55 | NTU |