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: 17/05/2019 | Sample Time: 12:10 | |
| Human Activities: Construction of Bridge | Weather: Cloudy,Hot and Humid | Water Body: Mechi |
| Frequency Of Monitoring: Monthly | Use Based Class: B | Approximate Depth(Bottom/Table): 1.00 m |
| Color & Intensity: Clear and Light Green | Odour: Metallic | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Sulphate | 10.42 | mg/l |
| Total Alkalinity | 36.00 | mg/l |
| Ammonia-N | BDL | mg/l |
| BOD | 2.80 | mg/l |
| Conductivity | 69.43 | µs/cm |
| Dissolved O2(DO) | 7.20 | mg/l |
| Sodium | 4.60 | mg/l |
| Fecal Coliform | 5000 | MPN/100ml |
| pH | 7.31 | Unit |
| Temperature | 28 | ⁰C |
| Total Dissolved Solids(TDS) | 72.00 | mg/l |
| Nitrate-N | 0.13 | mg/l |
| Boron | 0.005 | mg/l |
| Calcium | 6.41 | mg/l |
| Total Fixed Solids(TFS) | 18.00 | mg/l |
| Total Hardness as CaCo3 | 32.00 | mg/l |
| Total Kjeldahl Nitrogen(TKN) | mg/l | |
| Chloride | 16.63 | mg/l |
| COD | 26.28 | mg/l |
| Fluoride | 0.20 | mg/l |
| Magnesium | 4.61 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.245 | mg/l |
| Potassium | 3.70 | mg/l |
| Total Coliform | 22000 | MPN/100ml |
| Total Suspended Solids(TSS) | 63.00 | mg/l |
| Turbidity | 1.89 | NTU |