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: 25/04/2022 | Sample Time: 13:30 | |
| Human Activities: None | Weather: Sunny and Clear. | Water Body: Coochbihar lake |
| Frequency Of Monitoring: Quarterly | Use Based Class: C | Approximate Depth(Bottom/Table): 2.00 m |
| Color & Intensity: Light green and moderately turbid | Odour: Fishy | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| BOD | 2.40 | mg/l |
| Conductivity | 52.98 | µs/cm |
| Dissolved O2(DO) | 7.80 | mg/l |
| Fecal Coliform | 7000 | MPN/100ml |
| Nitrate-N | 0.35 | mg/l |
| pH | 7.90 | Unit |
| Temperature(Water) | 27 | ⁰C |
| Chloride | 1.95 | mg/l |
| COD | 16.00 | mg/l |
| Fluoride | BDL | mg/l |
| Magnesium | 0.48 | mg/l |
| Phosphate-P | 0.005 | mg/l |
| Potassium | 1.50 | mg/l |
| Sodium | 3.80 | mg/l |
| Sulphate | 4.92 | mg/l |
| Total Alkalinity | 28.00 | mg/l |
| Total Dissolved Solids(TDS) | 36.00 | mg/l |
| Total Fixed Solids(TFS) | 52.00 | mg/l |
| Total Hardness as CaCo3 | 20.00 | mg/l |
| Total Suspended Solids(TSS) | 23.00 | mg/l |
| Turbidity | 3.71 | NTU |
| Arsenic | BDL | mg/l |
| Cadmium | BDL | mg/l |
| Copper | BDL | mg/l |
| Iron | 0.68 | mg/l |
| Lead | BDL | mg/l |
| Mercury | BDL | mg/l |
| Nickel | BDL | mg/l |
| Zinc | BDL | mg/l |
| a-BHC | BDL | ppb |
| a-Endosulphan | BDL | ppb |
| Aldrin | BDL | ppb |
| Anilophos | BDL | ppb |
| b-Endosulphan | BDL | ppb |
| Chlorpyriphos | BDL | ppb |
| g-BHC | BDL | ppb |
| Malathion | BDL | ppb |
| Methyl Parathion | BDL | ppb |
| o,p-DDT | BDL | ppb |
| p,p-DDT | BDL | ppb |
| Ammonia-N | 0.14 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Chromium Total | BDL | mg/l |
| Dieldrin | BDL | ppb |
| Total Coliform | 14000 | MPN/100ml |
| Boron | 4.66 | mg/l |
| Calcium | 7.20 | mg/l |