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: 21/01/2020 | Sample Time: 16:10 Hrs | |
| Human Activities: None | Weather: Clear and Sunny | 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: Fishy | Visible effluent discharge: None. |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Total Suspended Solids(TSS) | 30.00 | mg/l |
| Turbidity | 1.32 | NTU |
| Ammonia-N | 0.16 | mg/l |
| Sodium | 0.60 | mg/l |
| pH | 7.20 | Unit |
| Temperature | 18 | ⁰C |
| Total Alkalinity | 64.00 | mg/l |
| BOD | 1.40 | mg/l |
| Conductivity | 98.13 | µs/cm |
| Dissolved O2(DO) | 6.80 | mg/l |
| Total Coliform | 5000 | MPN/100ml |
| Nitrate-N | 0.81 | mg/l |
| Total Fixed Solids(TFS) | 30.00 | mg/l |
| Fecal Coliform | 1700 | MPN/100ml |
| Boron | 6.14 | mg/l |
| Calcium | 20.84 | mg/l |
| Chloride | 13.69 | mg/l |
| COD | 45.00 | mg/l |
| Magnesium | 7.49 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.026 | mg/l |
| Potassium | 1.90 | mg/l |
| Total Dissolved Solids(TDS) | 58.00 | mg/l |
| Sulphate | 19.17 | mg/l |
| Total Hardness as CaCo3 | 78.00 | mg/l |
| Fluoride | 0.16 | mg/l |