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: 27/08/2021 | Sample Time: 16:30 | |
| Human Activities: Fish feeding and horse riding. | Weather: Cloudy | Water Body: Mirikh lake |
| Frequency Of Monitoring: Quarterly | Use Based Class: C | Approximate Depth(Bottom/Table): 2.00 m |
| Color & Intensity: Dark Green and turbid | Odour: Septic. | Visible effluent discharge: Moderate |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Ammonia-N | 0.20 | mg/l |
| BOD | 2.20 | mg/l |
| Conductivity | 68.12 | µs/cm |
| Dissolved O2(DO) | 6.40 | mg/l |
| Fecal Coliform | 5000 | MPN/100ml |
| Nitrate-N | 0.18 | mg/l |
| pH | 6.50 | Unit |
| Temperature(Water) | 20 | ⁰C |
| Total Coliform | 14000 | MPN/100ml |
| Boron | 1.38 | mg/l |
| Calcium | 12.02 | mg/l |
| Chloride | 5.87 | mg/l |
| COD | 22.00 | mg/l |
| Fluoride | 0.38 | mg/l |
| Magnesium | 2.88 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.005 | mg/l |
| Potassium | 0.60 | mg/l |
| Sodium | 1.60 | mg/l |
| Sulphate | 10.06 | mg/l |
| Total Alkalinity | 54.00 | mg/l |
| Total Dissolved Solids(TDS) | 38.00 | mg/l |
| Total Fixed Solids(TFS) | 54.00 | mg/l |
| Total Hardness as CaCo3 | 40.0 | mg/l |
| Total Suspended Solids(TSS) | 18.00 | mg/l |
| Turbidity | 26.10 | NTU |