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: 27/11/2019 | Sample Time: 12:40 Hrs | |
| Human Activities: None. | Weather: Sunny and Clear. | Water Body: Raidak |
| Frequency Of Monitoring: Monthly | Use Based Class: B | Approximate Depth(Bottom/Table): 1.00 m |
| Color & Intensity: Moderately Green & moderately Turbid. | Odour: Fishy | Visible effluent discharge: None. |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Ammonia-N | mg/l | |
| Conductivity | 92.65 | µs/cm |
| Phenolpthalein Alkanity | NIL | mg/l |
| Total Hardness as CaCo3 | mg/l | |
| Total Suspended Solids(TSS) | mg/l | |
| Turbidity | 3.55 | NTU |
| Dissolved O2(DO) | 7.20 | mg/l |
| Fecal Coliform | MPN/100ml | |
| Nitrate-N | mg/l | |
| pH | 7.50 | Unit |
| Temperature | 23 | ⁰C |
| Total Coliform | MPN/100ml | |
| Boron | mg/l | |
| Calcium | mg/l | |
| Chloride | mg/l | |
| COD | mg/l | |
| Fluoride | mg/l | |
| Magnesium | mg/l | |
| Phosphate-P | mg/l | |
| Potassium | mg/l | |
| Sodium | mg/l | |
| Sulphate | mg/l | |
| Total Alkalinity | mg/l | |
| Total Dissolved Solids(TDS) | mg/l | |
| Total Fixed Solids(TFS) | mg/l | |
| BOD | 1.30 | mg/l |