West Bengal Pollution Control Board |
Siliguri Laboratory |
Paribesh Bhawan, Paribahan Nagar, P.O. Matigara, Siliguri,Darjeeling 734 428. |
| Station: River Raidak at Alipurduar | River Basin: Tista | CPCB Station Code: 4728 |
| Sample Date: 28/08/2020 | Sample Time: 12:50 | |
| Human Activities: None | Weather: Sunny and Hot. | Water Body: Raidak |
| Frequency Of Monitoring: Monthly | Use Based Class: B | Approximate Depth(Bottom/Table): 1.00 m |
| Color & Intensity: Light Brown | Odour: Fishy | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Temperature(Water) | 27 | ⁰C |
| Total Coliform | 8000 | MPN/100ml |
| Boron | 3.29 | mg/l |
| Calcium | 16.83 | mg/l |
| Chloride | 0.97 | mg/l |
| COD | 26.00 | mg/l |
| Fluoride | BDL | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.013 | mg/l |
| Potassium | 4.80 | mg/l |
| Sodium | 1.30 | mg/l |
| Total Alkalinity | 86.00 | mg/l |
| Total Dissolved Solids(TDS) | 42.0 | mg/l |
| Total Fixed Solids(TFS) | 190.00 | mg/l |
| Total Hardness as CaCo3 | 82.00 | mg/l |
| Total Suspended Solids(TSS) | 26.00 | mg/l |
| BOD | 1.40 | mg/l |
| Conductivity | 131.90 | µs/cm |
| Dissolved O2(DO) | 7.20 | mg/l |
| Nitrate-N | 0.41 | mg/l |
| Ammonia-N | BDL | mg/l |
| pH | 7.56 | Unit |
| Sulphate | 20.84 | mg/l |
| Turbidity | 18.30 | NTU |
| Magnesium | 11.52 | mg/l |
| Fecal Coliform | 2700 | MPN/100ml |