West Bengal Pollution Control Board |
Siliguri Laboratory |
Paribesh Bhawan, Paribahan Nagar, P.O. Matigara, Siliguri,Darjeeling 734 428. |
| Station: MIRIKH LAKE | River Basin: Tista | CPCB Station Code: 2520 |
| Sample Date: 22/04/2021 | Sample Time: 15:40 | |
| Human Activities: Horse riding | Weather: Cloudy and Rainy. | Water Body: Mirikh lake |
| Frequency Of Monitoring: Quarterly | Use Based Class: C | Approximate Depth(Bottom/Table): 1.00 m |
| Color & Intensity: Dark green and highly turbid | Odour: Fishy and Septic. | Visible effluent discharge: Moderate |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| BOD | 2.80 | mg/l |
| Conductivity | 168.00 | µs/cm |
| Dissolved O2(DO) | 6.40 | mg/l |
| Fecal Coliform | 5000 | MPN/100ml |
| Nitrate-N | 0.32 | mg/l |
| pH | 7.60 | Unit |
| Temperature(Water) | 13 | ⁰C |
| Total Coliform | 13000 | MPN/100ml |
| Boron | 1.76 | mg/l |
| Calcium | 12.02 | mg/l |
| Chloride | 9.78 | mg/l |
| COD | 68.00 | mg/l |
| Magnesium | 9.79 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.005 | mg/l |
| Potassium | 1.80 | mg/l |
| Sodium | 6.80 | mg/l |
| Total Dissolved Solids(TDS) | 82.00 | mg/l |
| Total Fixed Solids(TFS) | 30.00 | mg/l |
| Total Hardness as CaCo3 | 30.00 | mg/l |
| Total Suspended Solids(TSS) | 72.00 | mg/l |
| Turbidity | 53.20 | NTU |
| Cadmium | BDL | mg/l |
| Chromium Total | BDL | mg/l |
| Copper | BDL | mg/l |
| Iron | 1.01 | mg/l |
| Lead | BDL | mg/l |
| Mercury | BDL | mg/l |
| Nickel | BDL | mg/l |
| Zinc | 0.08 | mg/l |
| a-BHC | ppb | |
| a-Endosulphan | ppb | |
| Aldrin | ppb | |
| Anilophos | ppb | |
| Chlorpyriphos | ppb | |
| Ammonia-N | 0.84 | mg/l |
| Fluoride | BDL | mg/l |
| Arsenic | BDL | mg/l |
| b-Endosulphan | ppb | |
| Dieldrin | ppb | |
| g-BHC | ppb | |
| Malathion | ppb | |
| Methyl Parathion | ppb | |
| o,p-DDT | ppb | |
| p,p-DDT | ppb | |
| Total Alkalinity | 38.00 | mg/l |
| Sulphate | 17.68 | mg/l |