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: 24/11/2020 | Sample Time: 13:10 | |
| Human Activities: Bathing and Washing and sand recovery. | 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 Green | Odour: Odour Free | Visible effluent discharge: Moderate |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Ammonia-N | 0.12 | mg/l |
| BOD | 2.80 | mg/l |
| Conductivity | 91.70 | µs/cm |
| Dissolved O2(DO) | 7.70 | mg/l |
| Fecal Coliform | 2700 | MPN/100ml |
| Fecal Streptococci | 47 | MPN/100ml |
| Nitrate-N | 0.017 | mg/l |
| pH | 7.33 | Unit |
| Temperature(Water) | 27 | ⁰C |
| Total Coliform | 8000 | MPN/100ml |
| Boron | 1.55 | mg/l |
| Calcium | 24.04 | mg/l |
| Chloride | 2.94 | mg/l |
| COD | 20.00 | mg/l |
| Fluoride | BDL | mg/l |
| Magnesium | 10.94 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.015 | mg/l |
| Potassium | 0.90 | mg/l |
| Sodium | 2.40 | mg/l |
| Sulphate | 9.86 | mg/l |
| Total Alkalinity | 92.00 | mg/l |
| Total Dissolved Solids(TDS) | 59.00 | mg/l |
| Total Fixed Solids(TFS) | 16.00 | mg/l |
| Total Hardness as CaCo3 | 98.00 | mg/l |
| Total Suspended Solids(TSS) | 82.00 | mg/l |
| Turbidity | 4.72 | NTU |