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: 13/10/2019 | Sample Time: 15:40 | |
| Human Activities: Bathing, Washing. | Weather: Sunny and Clear | 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: Odour free | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Ammonia-N | BDL | mg/l |
| BOD | 1.20 | mg/l |
| Conductivity | 124.00 | µs/cm |
| Dissolved O2(DO) | 7.10 | mg/l |
| Fecal Coliform | 2300 | MPN/100ml |
| Nitrate-N | 0.47 | mg/l |
| pH | 6.87 | Unit |
| Phenolpthalein Alkanity | NIL | mg/l |
| Turbidity | 1.30 | NTU |
| Boron | 0.018 | mg/l |
| Fluoride | 0.15 | mg/l |
| Phosphate-P | 0.028 | mg/l |
| Potassium | 5.30 | mg/l |
| Sodium | 5.60 | mg/l |
| Sulphate | 4.34 | mg/l |
| Total Alkalinity | 52.00 | mg/l |
| Total Dissolved Solids(TDS) | 84.00 | mg/l |
| Total Fixed Solids(TFS) | 188.00 | mg/l |
| Total Hardness as CaCo3 | 28.00 | mg/l |
| Total Suspended Solids(TSS) | 66.00 | mg/l |
| Temperature | 29 | ⁰C |
| Total Coliform | 8000 | MPN/100ml |
| Calcium | 7.21 | mg/l |
| Chloride | 3.92 | mg/l |
| COD | 36.00 | mg/l |
| Magnesium | 2.88 | mg/l |