West Bengal Pollution Control Board |
Siliguri Laboratory |
Paribesh Bhawan, Paribahan Nagar, P.O. Matigara, Siliguri,Darjeeling 734 428. |
| Station: KOCHBIHAR LAKE (SAGAR DIGHI) | River Basin: Raidak_Torsa | CPCB Station Code: 2519 |
| Sample Date: 24/09/2021 | Sample Time: 13:20 | |
| Human Activities: None | Weather: Sunny and Clear. | Water Body: Coochbihar lake |
| Frequency Of Monitoring: Quarterly | Use Based Class: C | Approximate Depth(Bottom/Table): 1.50 m |
| Color & Intensity: Dark Green and turbid | Odour: Fishy. | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| BOD | 1.50 | mg/l |
| Dissolved O2(DO) | 6.80 | mg/l |
| Fecal Coliform | 2100 | MPN/100ml |
| Nitrate-N | 0.08 | mg/l |
| pH | 7.60 | Unit |
| Temperature(Water) | 30 | ⁰C |
| Total Coliform | 7000 | MPN/100ml |
| Boron | 1.68 | mg/l |
| Calcium | 9.62 | mg/l |
| Chloride | 7.83 | mg/l |
| COD | 10.00 | mg/l |
| Fluoride | BDL | mg/l |
| Magnesium | 5.76 | mg/l |
| Phosphate-P | 0.003 | mg/l |
| Potassium | BDL | mg/l |
| Sodium | 1.2 | mg/l |
| Sulphate | 4.29 | mg/l |
| Total Alkalinity | 76.00 | mg/l |
| Total Dissolved Solids(TDS) | 30.00 | mg/l |
| Total Fixed Solids(TFS) | 82.00 | mg/l |
| Total Hardness as CaCo3 | 44.00 | mg/l |
| Total Suspended Solids(TSS) | 8.00 | mg/l |
| Turbidity | 5.27 | NTU |
| Phenolpthalein Alkanity | NIL | mg/l |
| Conductivity | 46.10 | µs/cm |
| Ammonia-N | 0.12 | mg/l |