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: 20/01/2022 | Sample Time: 11:15 | |
| Human Activities: None | Weather: Cloudy and Rainy. | Water Body: Siltorsa |
| Frequency Of Monitoring: Monthly | Use Based Class: B | Approximate Depth(Bottom/Table): 1.00 m |
| Color & Intensity: Light Green and moderately turbid | Odour: Fishy | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Ammonia-N | 0.14 | mg/l |
| BOD | 0.80 | mg/l |
| Conductivity | 129.40 | µs/cm |
| Dissolved O2(DO) | 7.20 | mg/l |
| Fecal Coliform | 5000 | MPN/100ml |
| Fecal Streptococci | 20 | MPN/100ml |
| Nitrate-N | 0.06 | mg/l |
| pH | 7.28 | Unit |
| Temperature(Water) | 13 | ⁰C |
| Total Coliform | 22000 | MPN/100ml |
| Boron | 2.07 | mg/l |
| Calcium | 25.65 | mg/l |
| Chloride | 5.87 | mg/l |
| COD | 14.00 | mg/l |
| Fluoride | 0.14 | mg/l |
| Magnesium | 14.97 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.001 | mg/l |
| Potassium | 1.10 | mg/l |
| Sodium | 1.30 | mg/l |
| Sulphate | 8.84 | mg/l |
| Total Alkalinity | 74.00 | mg/l |
| Total Dissolved Solids(TDS) | 78.00 | mg/l |
| Total Fixed Solids(TFS) | 24.00 | mg/l |
| Total Hardness as CaCo3 | 116.00 | mg/l |
| Total Suspended Solids(TSS) | 5.00 | mg/l |
| Turbidity | 5.77 | NTU |