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: 10/06/2022 | Sample Time: 11:50 | |
| Human Activities: Fishing | Weather: Cloudy and Rainy. | Water Body: Siltorsa |
| Frequency Of Monitoring: Monthly | Use Based Class: B | Approximate Depth(Bottom/Table): 1.00 m |
| Color & Intensity: Moderately Brown and turbid | Odour: Fishy | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Ammonia-N | BDL | mg/l |
| BOD | 1.10 | mg/l |
| Conductivity | 133.05 | µs/cm |
| Dissolved O2(DO) | 7.50 | mg/l |
| Fecal Coliform | 2600 | MPN/100ml |
| Fecal Streptococci | 25 | MPN/100ml |
| Nitrate-N | 0.47 | mg/l |
| pH | 6.93 | Unit |
| Temperature(Water) | 23 | ⁰C |
| Total Coliform | 14000 | MPN/100ml |
| Boron | 4.96 | mg/l |
| Calcium | 19.20 | mg/l |
| Chloride | 0.97 | mg/l |
| COD | 5.20 | mg/l |
| Fluoride | BDL | mg/l |
| Magnesium | 4.86 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.014 | mg/l |
| Potassium | 3.50 | mg/l |
| Sodium | 4.00 | mg/l |
| Sulphate | 11.39 | mg/l |
| Total Alkalinity | 64.00 | mg/l |
| Total Dissolved Solids(TDS) | 64.00 | mg/l |
| Total Fixed Solids(TFS) | 520.00 | mg/l |
| Total Hardness as CaCo3 | 68.00 | mg/l |
| Total Suspended Solids(TSS) | 654.00 | mg/l |
| Turbidity | 257.00 | NTU |