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: 30/09/2019 | Sample Time: 12:05 Hrs | |
| Human Activities: Fishing | Weather: Cloudy | Water Body: Siltorsa |
| Frequency Of Monitoring: Monthly | Use Based Class: B | Approximate Depth(Bottom/Table): 1.00 m |
| Color & Intensity: Moderately green and clear | Odour: Fishy | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| BOD | 2.20 | mg/l |
| Conductivity | 148.32 | µs/cm |
| Fecal Coliform | 3400 | MPN/100ml |
| Nitrate-N | 0.49 | mg/l |
| Temperature | 25 | ⁰C |
| Total Coliform | 13000 | MPN/100ml |
| Boron | 0.027 | mg/l |
| Calcium | 22.44 | mg/l |
| Chloride | 8.81 | mg/l |
| COD | 57.29 | mg/l |
| Ammonia-N | BDL | mg/l |
| Magnesium | 6.91 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Potassium | 8.90 | mg/l |
| Sodium | 1.40 | mg/l |
| Sulphate | 34.88 | mg/l |
| Total Alkalinity | 104.00 | mg/l |
| Total Dissolved Solids(TDS) | 78.0 | mg/l |
| Total Fixed Solids(TFS) | 738.00 | mg/l |
| Total Hardness as CaCo3 | 80.0 | mg/l |
| Total Kjeldahl Nitrogen(TKN) | mg/l | |
| Total Suspended Solids(TSS) | 110.0 | mg/l |
| Turbidity | 320.00 | NTU |
| Fluoride | 0.12 | mg/l |
| Phosphate-P | 0.157 | mg/l |
| pH | 7.60 | Unit |
| Dissolved O2(DO) | 7.40 | mg/l |