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: 09/08/2019 | Sample Time: 16:45 | |
| 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: Clear and Light Green | Odour: Fishy | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| BOD | 1.80 | mg/l |
| Conductivity | 153.90 | µs/cm |
| Dissolved O2(DO) | 7.20 | mg/l |
| Fecal Coliform | 3000 | MPN/100ml |
| Nitrate-N | 0.90 | mg/l |
| pH | 7.53 | Unit |
| Temperature | 29 | ⁰C |
| Total Coliform | 11000 | MPN/100ml |
| Boron | 0.021 | mg/l |
| Calcium | 23.25 | mg/l |
| Chloride | 9.78 | mg/l |
| COD | 61.86 | mg/l |
| Fluoride | BDL | mg/l |
| Magnesium | 6.91 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.184 | mg/l |
| Potassium | 9.70 | mg/l |
| Sodium | 1.40 | mg/l |
| Sulphate | 24.14 | mg/l |
| Total Alkalinity | 122.0 | mg/l |
| Total Dissolved Solids(TDS) | 68.00 | mg/l |
| Total Fixed Solids(TFS) | 132.00 | mg/l |
| Total Hardness as CaCo3 | 82.0 | mg/l |
| Total Kjeldahl Nitrogen(TKN) | mg/l | |
| Total Suspended Solids(TSS) | 98.00 | mg/l |
| Turbidity | 32.50 | NTU |
| Ammonia-N | BDL | mg/l |