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: 15/01/2021 | Sample Time: 12:30 | |
| 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 clear | Odour: Fishy | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Dissolved O2(DO) | 6.80 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Calcium | 14.42 | mg/l |
| Chloride | 0.97 | mg/l |
| COD | 46.00 | mg/l |
| BOD | 2.00 | mg/l |
| Conductivity | 57.81 | µs/cm |
| Fecal Coliform | 3400 | MPN/100ml |
| Fecal Streptococci | 22 | MPN/100ml |
| Nitrate-N | 0.043 | mg/l |
| pH | 7.15 | Unit |
| Temperature(Water) | 20 | ⁰C |
| Total Coliform | 13000 | MPN/100ml |
| Boron | 2.52 | mg/l |
| Fluoride | 0.20 | mg/l |
| Magnesium | 4.032 | mg/l |
| Phosphate-P | 0.005 | mg/l |
| Potassium | 0.60 | mg/l |
| Sodium | 3.30 | mg/l |
| Sulphate | 5.36 | mg/l |
| Total Alkalinity | 26.00 | mg/l |
| Total Dissolved Solids(TDS) | 28.00 | mg/l |
| Total Fixed Solids(TFS) | 32.00 | mg/l |
| Ammonia-N | 0.22 | mg/l |
| Turbidity | 5.30 | NTU |
| Total Hardness as CaCo3 | 50.00 | mg/l |
| Total Suspended Solids(TSS) | 92.00 | mg/l |