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: 14/06/2022 | Sample Time: 16:00 | |
| Human Activities: Boating and Horse riding | Weather: Rainy and foggy | Water Body: Mirikh lake |
| Frequency Of Monitoring: Quarterly | Use Based Class: C | Approximate Depth(Bottom/Table): 1.00 m |
| Color & Intensity: Moderately Green and turbid | Odour: Septic. | Visible effluent discharge: Moderate |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Ammonia-N | 0.49 | mg/l |
| BOD | 3.20 | mg/l |
| Conductivity | 144.20 | µs/cm |
| Dissolved O2(DO) | 7.20 | mg/l |
| Fecal Coliform | 2300 | MPN/100ml |
| Nitrate-N | 0.23 | mg/l |
| pH | 7.68 | Unit |
| Temperature(Water) | 15 | ⁰C |
| Total Coliform | 5000 | MPN/100ml |
| Boron | 4.96 | mg/l |
| Calcium | 13.60 | mg/l |
| Chloride | 13.69 | mg/l |
| COD | 27.00 | mg/l |
| Fluoride | BDL | mg/l |
| Magnesium | 3.40 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.015 | mg/l |
| Potassium | 3.60 | mg/l |
| Sodium | 12.10 | mg/l |
| Sulphate | 10.74 | mg/l |
| Total Alkalinity | 50.00 | mg/l |
| Total Dissolved Solids(TDS) | 74.00 | mg/l |
| Total Fixed Solids(TFS) | 32.00 | mg/l |
| Total Hardness as CaCo3 | 48.00 | mg/l |
| Total Suspended Solids(TSS) | 10.00 | mg/l |
| Turbidity | 11.90 | NTU |