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: 28/12/2021 | Sample Time: 13:05 | |
| Human Activities: open Defaecation, | Weather: Clear and sunny | Water Body: Mechi |
| Frequency Of Monitoring: Monthly | Use Based Class: B | Approximate Depth(Bottom/Table): 1.00 m |
| Color & Intensity: Dark green and moderately turbid | Odour: Nauseating | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| BOD | 2.00 | mg/l |
| Dissolved O2(DO) | 7.90 | mg/l |
| Fecal Coliform | 2100 | MPN/100ml |
| Fecal Streptococci | 24 | MPN/100ml |
| Nitrate-N | 0.05 | mg/l |
| pH | 7.81 | Unit |
| Temperature(Water) | 23 | ⁰C |
| Total Coliform | 9000 | MPN/100ml |
| Boron | 2.57 | mg/l |
| Calcium | 10.42 | mg/l |
| Chloride | 10.76 | mg/l |
| COD | 29.76 | mg/l |
| Fluoride | 0.14 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.005 | mg/l |
| Potassium | 1.3 | mg/l |
| Sodium | 1.60 | mg/l |
| Sulphate | 13.06 | mg/l |
| Total Alkalinity | 76.00 | mg/l |
| Total Dissolved Solids(TDS) | 53.00 | mg/l |
| Total Fixed Solids(TFS) | 134.00 | mg/l |
| Total Hardness as CaCo3 | 32.00 | mg/l |
| Total Suspended Solids(TSS) | 5.00 | mg/l |
| Turbidity | 3.07 | NTU |
| Conductivity | 95.76 | µs/cm |
| Magnesium | 1.728 | mg/l |
| Ammonia-N | BDL | mg/l |