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: 10/12/2020 | Sample Time: 14:00 | |
| Human Activities: None | Weather: Sunny and Clear. | Water Body: Mechi |
| Frequency Of Monitoring: Monthly | Use Based Class: B | Approximate Depth(Bottom/Table): 1.00 m |
| Color & Intensity: Light Green | Odour: Fishy | Visible effluent discharge: Moderate |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Conductivity | 52.54 | µs/cm |
| COD | 38.00 | mg/l |
| Total Alkalinity | 30.00 | mg/l |
| Total Dissolved Solids(TDS) | 28.00 | mg/l |
| Total Fixed Solids(TFS) | 244.00 | mg/l |
| Total Hardness as CaCo3 | 28.00 | mg/l |
| Total Suspended Solids(TSS) | 58.00 | mg/l |
| BOD | 1.80 | mg/l |
| Dissolved O2(DO) | 7.20 | mg/l |
| Fecal Coliform | 3400 | MPN/100ml |
| Fecal Streptococci | 250 | MPN/100ml |
| Fluoride | 0.13 | mg/l |
| Magnesium | 3.45 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Nitrate-N | 0.015 | mg/l |
| pH | 8.01 | Unit |
| Temperature(Water) | 18 | ⁰C |
| Total Coliform | 13000 | MPN/100ml |
| Boron | 1.54 | mg/l |
| Calcium | 6.41 | mg/l |
| Turbidity | 70.20 | NTU |
| Ammonia-N | BDL | mg/l |
| Phosphate-P | 0.026 | mg/l |
| Potassium | 1.10 | mg/l |
| Sodium | 2.80 | mg/l |
| Sulphate | 14.57 | mg/l |
| Chloride | 9.78 | mg/l |