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: 16/03/2022 | Sample Time: 16:00 | |
| Human Activities: Bathing and Washing and Fishing. | Weather: Sunny and Clear. | Water Body: Raidak |
| Frequency Of Monitoring: Monthly | Use Based Class: B | Approximate Depth(Bottom/Table): 1.00 m |
| Color & Intensity: Light Green | Odour: Fishy | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Ammonia-N | 0.17 | mg/l |
| BOD | 2.80 | mg/l |
| Conductivity | 191.30 | µs/cm |
| Dissolved O2(DO) | 7.00 | mg/l |
| Fecal Coliform | 3300 | MPN/100ml |
| Fecal Streptococci | 21 | MPN/100ml |
| Nitrate-N | 0.03 | mg/l |
| pH | 7.24 | Unit |
| Temperature(Water) | 26 | ⁰C |
| Total Coliform | 11000 | MPN/100ml |
| Boron | 2.36 | mg/l |
| Calcium | 28.00 | mg/l |
| Chloride | 6.84 | mg/l |
| COD | 38.40 | mg/l |
| Fluoride | 0.13 | mg/l |
| Magnesium | 9.23 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.008 | mg/l |
| Potassium | 0.40 | mg/l |
| Sodium | 1.80 | mg/l |
| Sulphate | 8.83 | mg/l |
| Total Alkalinity | 102.00 | mg/l |
| Total Dissolved Solids(TDS) | 96.00 | mg/l |
| Total Fixed Solids(TFS) | 158.00 | mg/l |
| Total Hardness as CaCo3 | 108.00 | mg/l |
| Total Suspended Solids(TSS) | 13.00 | mg/l |
| Turbidity | 2.32 | NTU |