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: 21/12/2021 | Sample Time: 11:05 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 Turbid | Odour: Fishy | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Ammonia-N | BDL | mg/l |
| BOD | 1.20 | mg/l |
| Conductivity | 120.32 | µs/cm |
| Dissolved O2(DO) | 7.80 | mg/l |
| Fecal Coliform | 700 | MPN/100ml |
| Fecal Streptococci | 23 | MPN/100ml |
| Nitrate-N | 0.11 | mg/l |
| pH | 7.23 | Unit |
| Temperature(Water) | 16 | ⁰C |
| Total Coliform | 2200 | MPN/100ml |
| Boron | 1.92 | mg/l |
| Calcium | 29.65 | mg/l |
| Chloride | 5.87 | mg/l |
| COD | 11.52 | mg/l |
| Fluoride | 0.13 | mg/l |
| Magnesium | 2.88 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.003 | mg/l |
| Potassium | 0.80 | mg/l |
| Sodium | 2.50 | mg/l |
| Sulphate | 16.78 | mg/l |
| Total Alkalinity | 96.00 | mg/l |
| Total Dissolved Solids(TDS) | 66.00 | mg/l |
| Total Fixed Solids(TFS) | 78.00 | mg/l |
| Total Hardness as CaCo3 | 84.00 | mg/l |
| Total Suspended Solids(TSS) | 20.015 | mg/l |
| Turbidity | 3.45 | NTU |