West Bengal Pollution Control Board |
Siliguri Laboratory |
Paribesh Bhawan, Paribahan Nagar, P.O. Matigara, Siliguri,Darjeeling 734 428. |
| Station: River Siltorsa at Hasimara | River Basin: Tista | CPCB Station Code: 4718 |
| Sample Date: 29/06/2021 | Sample Time: 10:20 | |
| Human Activities: None | Weather: Sunny and Clear. | Water Body: Siltorsa |
| Frequency Of Monitoring: Monthly | Use Based Class: B | Approximate Depth(Bottom/Table): 1.00 m |
| Color & Intensity: Moderately green | Odour: Fishy | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Fecal Coliform | 2700 | MPN/100ml |
| Fecal Streptococci | 21 | MPN/100ml |
| Nitrate-N | 0.36 | mg/l |
| pH | 7.87 | Unit |
| Temperature(Water) | 25 | ⁰C |
| Total Coliform | 11000 | MPN/100ml |
| Boron | 0.90 | mg/l |
| Calcium | 22.44 | mg/l |
| Chloride | 14.67 | mg/l |
| COD | 28.00 | mg/l |
| Fluoride | 0.10 | mg/l |
| Magnesium | 8.06 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.004 | mg/l |
| Potassium | 0.80 | mg/l |
| Sodium | 1.6 | mg/l |
| Sulphate | 13.68 | mg/l |
| Total Alkalinity | 72.00 | mg/l |
| Total Dissolved Solids(TDS) | 70.00 | mg/l |
| Total Fixed Solids(TFS) | 22.00 | mg/l |
| Total Hardness as CaCo3 | 84.00 | mg/l |
| Total Suspended Solids(TSS) | 20.00 | mg/l |
| Turbidity | 7.77 | NTU |
| Ammonia-N | 0.17 | mg/l |
| BOD | 1.80 | mg/l |
| Conductivity | 113.41 | µs/cm |
| Dissolved O2(DO) | 6.90 | mg/l |