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: 19/05/2022 | Sample Time: 16:00 | |
| Human Activities: Bathing and Washing | Weather: Cloudy and Windy | Water Body: Mechi |
| Frequency Of Monitoring: Monthly | Use Based Class: B | Approximate Depth(Bottom/Table): 1.00 m |
| Color & Intensity: Light Green and Clear | Odour: Fishy | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Ammonia-N | 0.12 | mg/l |
| BOD | 1.40 | mg/l |
| Conductivity | 75.38 | µs/cm |
| Dissolved O2(DO) | 7.60 | mg/l |
| Fecal Coliform | 14000 | MPN/100ml |
| Fecal Streptococci | 21 | MPN/100ml |
| Nitrate-N | 0.48 | mg/l |
| pH | 6.88 | Unit |
| Temperature(Water) | 27 | ⁰C |
| Total Coliform | 90000 | MPN/100ml |
| Boron | 3.52 | mg/l |
| Calcium | 5.60 | mg/l |
| Chloride | 1.95 | mg/l |
| COD | 15.00 | mg/l |
| Fluoride | 0.13 | mg/l |
| Magnesium | 1.94 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.008 | mg/l |
| Potassium | 3.40 | mg/l |
| Sodium | 6.30 | mg/l |
| Sulphate | 13.83 | mg/l |
| Total Alkalinity | 26.00 | mg/l |
| Total Dissolved Solids(TDS) | 45.00 | mg/l |
| Total Fixed Solids(TFS) | 70.00 | mg/l |
| Total Hardness as CaCo3 | 22.00 | mg/l |
| Total Suspended Solids(TSS) | 24.00 | mg/l |
| Turbidity | 6.15 | NTU |