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: 26/02/2020 | Sample Time: 07:00 hrs | |
| Human Activities: Construction of Bridge | Weather: Clear and sunny | 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: None | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Dissolved O2(DO) | 7.40 | mg/l |
| Fecal Coliform | 1400 | MPN/100ml |
| Nitrate-N | 1.06 | mg/l |
| Total Coliform | 7000 | MPN/100ml |
| Boron | 2.79 | mg/l |
| Chloride | 8.80 | mg/l |
| COD | 30.0 | mg/l |
| Fluoride | 0.20 | mg/l |
| Magnesium | 4.60 | mg/l |
| Phosphate-P | 0.001 | mg/l |
| Potassium | 1.00 | mg/l |
| Sodium | 2.50 | mg/l |
| Sulphate | 5.13 | mg/l |
| Total Alkalinity | 28.00 | mg/l |
| Ammonia-N | 0.19 | mg/l |
| Conductivity | 59.97 | µs/cm |
| Total Hardness as CaCo3 | 28.00 | mg/l |
| Total Suspended Solids(TSS) | 18.00 | mg/l |
| Total Fixed Solids(TFS) | 72.00 | mg/l |
| Turbidity | 2.95 | NTU |
| pH | 8.01 | Unit |
| BOD | 2.20 | mg/l |
| Calcium | 4.80 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Total Dissolved Solids(TDS) | 134.00 | mg/l |
| Temperature | 18 | ⁰C |