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: 23/03/2022 | Sample Time: 11:30 | |
| Human Activities: Bathing and Washing | 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 moderately turbid | Odour: Fishy. | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Ammonia-N | BDL | mg/l |
| BOD | 0.40 | mg/l |
| Conductivity | 132.60 | µs/cm |
| Dissolved O2(DO) | 7.10 | mg/l |
| Fecal Coliform | 2100 | MPN/100ml |
| Fecal Streptococci | 21 | MPN/100ml |
| Nitrate-N | 0.66 | mg/l |
| pH | 7.69 | Unit |
| Temperature(Water) | 28 | ⁰C |
| Total Coliform | 9000 | MPN/100ml |
| Boron | BDL | mg/l |
| Calcium | 19.20 | mg/l |
| Chloride | 3.91 | mg/l |
| COD | 9.20 | mg/l |
| Fluoride | BDL | mg/l |
| Magnesium | 6.31 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.008 | mg/l |
| Potassium | 0.20 | mg/l |
| Sodium | 1.40 | mg/l |
| Sulphate | 10.25 | mg/l |
| Total Alkalinity | 72.00 | mg/l |
| Total Dissolved Solids(TDS) | 74.00 | mg/l |
| Total Fixed Solids(TFS) | 112.00 | mg/l |
| Total Hardness as CaCo3 | 74.00 | mg/l |
| Total Suspended Solids(TSS) | 7.00 | mg/l |
| Turbidity | 9.44 | NTU |