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: 09/10/2020 | Sample Time: 13:30 | |
| Human Activities: Bathing ,Washing,cultivation and Fishing. | Weather: Sunny, Hot and humid | 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: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Nitrate-N | 0.57 | mg/l |
| pH | 6.86 | Unit |
| Total Fixed Solids(TFS) | 36.00 | mg/l |
| COD | 28.00 | mg/l |
| Sodium | 1.80 | mg/l |
| Temperature(Water) | 28 | ⁰C |
| Boron | 1.98 | mg/l |
| Calcium | 20.84 | mg/l |
| Chloride | 2.94 | mg/l |
| Total Dissolved Solids(TDS) | 68.00 | mg/l |
| BOD | 2.10 | mg/l |
| Total Coliform | 7000 | MPN/100ml |
| Fluoride | BDL | mg/l |
| Magnesium | 10.36 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.024 | mg/l |
| Potassium | 0.40 | mg/l |
| Sulphate | 4.63 | mg/l |
| Total Alkalinity | 98.00 | mg/l |
| Ammonia-N | 0.14 | mg/l |
| Conductivity | 116.50 | µs/cm |
| Dissolved O2(DO) | 7.10 | mg/l |
| Fecal Coliform | 2200 | MPN/100ml |
| Total Suspended Solids(TSS) | 24.00 | mg/l |
| Total Hardness as CaCo3 | 88.00 | mg/l |
| Turbidity | 7.02 | NTU |