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: 14/01/2021 | Sample Time: 13:30 Hrs | |
| Human Activities: Fishing | Weather: Sunny and Clear | Water Body: Siltorsa |
| Frequency Of Monitoring: Monthly | Use Based Class: B | Approximate Depth(Bottom/Table): 1.00 m |
| Color & Intensity: Light Green and clear | Odour: Odourless | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Total Dissolved Solids(TDS) | 68.00 | mg/l |
| Total Alkalinity | 22.00 | mg/l |
| pH | 7.10 | Unit |
| Fecal Coliform | 1100 | MPN/100ml |
| Fecal Streptococci | 14 | MPN/100ml |
| Nitrate-N | 0.039 | mg/l |
| Boron | 3.289 | mg/l |
| Calcium | 12.02 | mg/l |
| Chloride | 1.95 | mg/l |
| Fluoride | 0.16 | mg/l |
| COD | 42.00 | mg/l |
| Magnesium | 10.94 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.007 | mg/l |
| Potassium | 0.80 | mg/l |
| Sodium | 2.20 | mg/l |
| Sulphate | 11.78 | mg/l |
| Total Fixed Solids(TFS) | 56.00 | mg/l |
| Total Hardness as CaCo3 | 68.00 | mg/l |
| Total Suspended Solids(TSS) | 99.0 | mg/l |
| Turbidity | 4.59 | NTU |
| BOD | 1.80 | mg/l |
| Conductivity | 150.00 | µs/cm |
| Dissolved O2(DO) | 6.50 | mg/l |
| Temperature(Water) | 22 | ⁰C |
| Total Coliform | 8000 | MPN/100ml |
| Ammonia-N | 0.25 | mg/l |