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: 26/08/2021 | Sample Time: 15:20 | |
| 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 Brown and moderately turbid | Odour: Fishy | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Ammonia-N | 0.21 | mg/l |
| BOD | 1.80 | mg/l |
| Conductivity | 66.45 | µs/cm |
| Dissolved O2(DO) | 7.50 | mg/l |
| Fecal Coliform | 3300 | MPN/100ml |
| Fecal Streptococci | 14 | MPN/100ml |
| Nitrate-N | 0.13 | mg/l |
| pH | 7.60 | Unit |
| Temperature(Water) | 28 | ⁰C |
| Total Coliform | 11000 | MPN/100ml |
| Boron | 1.04 | mg/l |
| Calcium | 3.21 | mg/l |
| Chloride | 9.78 | mg/l |
| COD | 18.00 | mg/l |
| Fluoride | 0.15 | mg/l |
| Magnesium | 7.48 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.003 | mg/l |
| Potassium | 0.4 | mg/l |
| Sodium | 1.2 | mg/l |
| Sulphate | 7.35 | mg/l |
| Total Alkalinity | 58.0 | mg/l |
| Total Dissolved Solids(TDS) | 26.0 | mg/l |
| Total Fixed Solids(TFS) | 12.00 | mg/l |
| Total Hardness as CaCo3 | 34.00 | mg/l |
| Total Suspended Solids(TSS) | 18.00 | mg/l |
| Turbidity | 7.20 | NTU |