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: 25/10/2021 | Sample Time: 14:00 | |
| Human Activities: None | Weather: Sunny | Water Body: Mechi |
| Frequency Of Monitoring: Monthly | Use Based Class: B | Approximate Depth(Bottom/Table): 1.00 m |
| Color & Intensity: Green and light turbid | Odour: Fishy | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Ammonia-N | 0.13 | mg/l |
| BOD | 0.90 | mg/l |
| Conductivity | 86.41 | µs/cm |
| Dissolved O2(DO) | 6.90 | mg/l |
| Fecal Coliform | 2200 | MPN/100ml |
| Fecal Streptococci | 10 | MPN/100ml |
| Nitrate-N | 0.07 | mg/l |
| pH | 6.84 | Unit |
| Temperature(Water) | 25 | ⁰C |
| Total Coliform | 3300 | MPN/100ml |
| Boron | 1.02 | mg/l |
| Calcium | 9.62 | mg/l |
| Chloride | 4.89 | mg/l |
| COD | 22.00 | mg/l |
| Fluoride | 0.14 | mg/l |
| Magnesium | 3.46 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.002 | mg/l |
| Potassium | 0.90 | mg/l |
| Sodium | 3.20 | mg/l |
| Sulphate | 1.54 | mg/l |
| Total Alkalinity | 28.00 | mg/l |
| Total Dissolved Solids(TDS) | 12.00 | mg/l |
| Total Fixed Solids(TFS) | 56.00 | mg/l |
| Total Hardness as CaCo3 | 36.00 | mg/l |
| Total Suspended Solids(TSS) | 8.00 | mg/l |
| Turbidity | 4.12 | NTU |