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: 13/09/2019 | Sample Time: 14:15 Hrs | |
| Human Activities: Bathing and washing. | Weather: Cloudy | Water Body: Raidak |
| Frequency Of Monitoring: Monthly | Use Based Class: B | Approximate Depth(Bottom/Table): 1.00 m |
| Color & Intensity: light green and clear | Odour: Fishy | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Total Coliform | 17000 | MPN/100ml |
| Ammonia-N | BDL | mg/l |
| pH | 8.00 | Unit |
| Temperature | 26 | ⁰C |
| BOD | 1.80 | mg/l |
| Conductivity | 182.46 | µs/cm |
| Dissolved O2(DO) | 6.80 | mg/l |
| Fecal Coliform | 2200 | MPN/100ml |
| Nitrate-N | 1.19 | mg/l |
| Boron | 0.021 | mg/l |
| Calcium | 25.65 | mg/l |
| Chloride | 10.76 | mg/l |
| COD | 26.73 | mg/l |
| Fluoride | BDL | mg/l |
| Magnesium | 12.09 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.038 | mg/l |
| Sodium | 2.60 | mg/l |
| Sulphate | 12.79 | mg/l |
| Total Alkalinity | 122.0 | mg/l |
| Total Dissolved Solids(TDS) | 60.0 | mg/l |
| Total Fixed Solids(TFS) | 66.00 | mg/l |
| Total Hardness as CaCo3 | 106.00 | mg/l |
| Total Kjeldahl Nitrogen(TKN) | mg/l | |
| Turbidity | 14.80 | NTU |
| Potassium | 1.10 | mg/l |
| Total Suspended Solids(TSS) | 82.00 | mg/l |