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: 12/11/2021 | Sample Time: 15:05 | |
| 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: Moderately Brown and moderately turbid | Odour: Fishy. | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Ammonia-N | 0.12 | mg/l |
| BOD | 1.40 | mg/l |
| Conductivity | 138.50 | µs/cm |
| Dissolved O2(DO) | 7.70 | mg/l |
| Fecal Coliform | 5000 | MPN/100ml |
| Fecal Streptococci | 46 | MPN/100ml |
| Nitrate-N | 0.13 | mg/l |
| pH | 7.60 | Unit |
| Temperature(Water) | 24 | ⁰C |
| Total Coliform | 11000 | MPN/100ml |
| Boron | 3.41 | mg/l |
| Calcium | 48.09 | mg/l |
| Chloride | 11.74 | mg/l |
| COD | 18.0 | mg/l |
| Fluoride | 0.15 | mg/l |
| Magnesium | 13.82 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.002 | mg/l |
| Potassium | 1.30 | mg/l |
| Sodium | 2.00 | mg/l |
| Sulphate | 10.47 | mg/l |
| Total Alkalinity | 152.00 | mg/l |
| Total Dissolved Solids(TDS) | 62.00 | mg/l |
| Total Fixed Solids(TFS) | 126.00 | mg/l |
| Total Hardness as CaCo3 | 168.00 | mg/l |
| Total Suspended Solids(TSS) | 41.00 | mg/l |
| Turbidity | 5.69 | NTU |