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: 23/06/2022 | Sample Time: 16:00 | |
| Human Activities: Bathing and Washing and Fishing. | Weather: Cloudy and Rainy. | Water Body: Mechi |
| Frequency Of Monitoring: Monthly | Use Based Class: B | Approximate Depth(Bottom/Table): 1.00 m |
| Color & Intensity: Light Brown and moderately turbid | Odour: Fishy | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Ammonia-N | BDL | mg/l |
| BOD | 1.80 | mg/l |
| Conductivity | 87.07 | µs/cm |
| Dissolved O2(DO) | 6.80 | mg/l |
| Fecal Coliform | 11000 | MPN/100ml |
| Fecal Streptococci | 17 | MPN/100ml |
| Nitrate-N | 1.95 | mg/l |
| pH | 7.55 | Unit |
| Temperature(Water) | 27 | ⁰C |
| Total Coliform | 22000 | MPN/100ml |
| Boron | 3.86 | mg/l |
| Calcium | 8.00 | mg/l |
| Chloride | 5.87 | mg/l |
| COD | 18.00 | mg/l |
| Fluoride | 0.17 | mg/l |
| Magnesium | 0.48 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.014 | mg/l |
| Potassium | 4.0 | mg/l |
| Sodium | 8.70 | mg/l |
| Sulphate | 12.36 | mg/l |
| Total Alkalinity | 30.00 | mg/l |
| Total Dissolved Solids(TDS) | 51.00 | mg/l |
| Total Fixed Solids(TFS) | 144.00 | mg/l |
| Total Hardness as CaCo3 | 22.00 | mg/l |
| Total Suspended Solids(TSS) | 76.00 | mg/l |
| Turbidity | 45.00 | NTU |