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: 17/04/2020 | Sample Time: 12:00 | |
| Human Activities: None | Weather: Sunny and Hot. | Water Body: Raidak |
| Frequency Of Monitoring: Monthly | Use Based Class: B | Approximate Depth(Bottom/Table): 1.00 m |
| Color & Intensity: Clear Light Green | Odour: Fishy | Visible effluent discharge: Moderate |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Ammonia-N | mg/l | |
| BOD | 1.60 | mg/l |
| Conductivity | 98.41 | µs/cm |
| Dissolved O2(DO) | 7.40 | mg/l |
| Fecal Coliform | 800 | MPN/100ml |
| Nitrate-N | mg/l | |
| pH | 7.40 | Unit |
| Temperature(Water) | 27 | ⁰C |
| Total Coliform | 2300 | MPN/100ml |
| Boron | mg/l | |
| Calcium | 20.04 | mg/l |
| Chloride | 5.87 | mg/l |
| COD | 18.00 | mg/l |
| Fluoride | mg/l | |
| Magnesium | 13.82 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.003 | mg/l |
| Potassium | BDL | mg/l |
| Sodium | 1.80 | mg/l |
| Sulphate | 6.69 | mg/l |
| Total Alkalinity | 84.00 | mg/l |
| Total Dissolved Solids(TDS) | 66.00 | mg/l |
| Total Fixed Solids(TFS) | mg/l | |
| Total Hardness as CaCo3 | 98.00 | mg/l |
| Total Suspended Solids(TSS) | 32.00 | mg/l |
| Turbidity | NTU | |
| Arsenic | mg/l | |
| Cadmium | mg/l | |
| Chromium Total | mg/l | |
| Copper | mg/l | |
| Iron | mg/l | |
| Lead | mg/l | |
| Mercury | mg/l | |
| Nickel | mg/l | |
| Zinc | mg/l | |
| a-BHC | ppb | |
| a-Endosulphan | ppb | |
| Aldrin | ppb | |
| Anilophos | ppb | |
| b-Endosulphan | ppb | |
| Chlorpyriphos | ppb | |
| Dieldrin | ppb | |
| g-BHC | ppb | |
| Malathion | ppb | |
| Methyl Parathion | ppb | |
| o,p-DDT | ppb | |
| p,p-DDT | ppb | |