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: 25/03/2021 | Sample Time: 15:40 Hrs | |
| Human Activities: Construction Work of walls. | Weather: Cloudy | 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: Septic | Visible effluent discharge: Moderate |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Ammonia-N | BDL | mg/l |
| BOD | 2.40 | mg/l |
| Conductivity | 161.00 | µs/cm |
| Dissolved O2(DO) | 6.20 | mg/l |
| Fecal Coliform | 3300 | MPN/100ml |
| Nitrate-N | 0.14 | mg/l |
| pH | 7.40 | Unit |
| Temperature(Water) | 16 | ⁰C |
| Total Coliform | 14000 | MPN/100ml |
| Boron | 1.05 | mg/l |
| Calcium | 8.02 | mg/l |
| Chloride | 17.61 | mg/l |
| COD | 56.00 | mg/l |
| Fluoride | BDL | mg/l |
| Magnesium | 7.49 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.006 | mg/l |
| Potassium | 4.4 | mg/l |
| Sodium | 4.2 | mg/l |
| Sulphate | 13.42 | mg/l |
| Total Alkalinity | 28 | mg/l |
| Total Dissolved Solids(TDS) | 106.00 | mg/l |
| Total Fixed Solids(TFS) | 64.00 | mg/l |
| Total Hardness as CaCo3 | 46.00 | mg/l |
| Total Suspended Solids(TSS) | 62.00 | mg/l |
| Turbidity | 24.70 | NTU |