West Bengal Pollution Control Board |
Siliguri Laboratory |
Paribesh Bhawan, Paribahan Nagar, P.O. Matigara, Siliguri,Darjeeling 734 428. |
| Station: River Mechi at Nehaljote | River Basin: Mahananda | CPCB Station Code: 4727 |
| Sample Date: 15/04/2020 | Sample Time: 12:40 | |
| Human Activities: None | Weather: Sunny and Hot. | Water Body: Mechi |
| 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 | 1.80 | mg/l |
| Conductivity | 38.24 | µs/cm |
| Dissolved O2(DO) | 8.20 | mg/l |
| Fecal Coliform | 1100 | MPN/100ml |
| Nitrate-N | mg/l | |
| pH | 7.60 | Unit |
| Temperature(Water) | 26 | ⁰C |
| Total Coliform | 3400 | MPN/100ml |
| Boron | mg/l | |
| Calcium | 6.41 | mg/l |
| Chloride | 4.89 | mg/l |
| COD | 10.00 | mg/l |
| Fluoride | mg/l | |
| Magnesium | 4.61 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.003 | mg/l |
| Potassium | 1.00 | mg/l |
| Sodium | 2.50 | mg/l |
| Sulphate | 8.65 | mg/l |
| Total Alkalinity | 18.00 | mg/l |
| Total Dissolved Solids(TDS) | 44.00 | mg/l |
| Total Fixed Solids(TFS) | mg/l | |
| Total Hardness as CaCo3 | 32.00 | mg/l |
| Total Suspended Solids(TSS) | 10.00 | 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 | |