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: 23/08/2021 | Sample Time: 11:15 | |
| 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: Light Brown and moderately turbid | Odour: Fishy | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Ammonia-N | 0.12 | mg/l |
| BOD | 1.20 | mg/l |
| Conductivity | 88.64 | µs/cm |
| Dissolved O2(DO) | 6.90 | mg/l |
| Fecal Coliform | 2200 | MPN/100ml |
| Fecal Streptococci | 11 | MPN/100ml |
| Nitrate-N | 0.23 | mg/l |
| pH | 6.98 | Unit |
| Temperature(Water) | 28 | ⁰C |
| Total Coliform | 7000 | MPN/100ml |
| Boron | 0.54 | mg/l |
| Calcium | 14.42 | mg/l |
| Chloride | 3.91 | mg/l |
| COD | 16.00 | mg/l |
| Fluoride | 0.10 | mg/l |
| Magnesium | 4.03 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.003 | mg/l |
| Potassium | 0.8 | mg/l |
| Sodium | 0.2 | mg/l |
| Sulphate | 4.26 | mg/l |
| Total Alkalinity | 58.00 | mg/l |
| Total Dissolved Solids(TDS) | 46.00 | mg/l |
| Total Fixed Solids(TFS) | 76.00 | mg/l |
| Total Hardness as CaCo3 | 50.00 | mg/l |
| Total Suspended Solids(TSS) | 10.00 | mg/l |
| Turbidity | 39.00 | NTU |