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: 30/11/2021 | Sample Time: 16:45 | |
| Human Activities: Horse riding and boating | 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 turbid | Odour: Fishy and Septic. | Visible effluent discharge: Moderate |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Ammonia-N | 0.14 | mg/l |
| BOD | 2.80 | mg/l |
| Conductivity | 70.10 | µs/cm |
| Dissolved O2(DO) | 5.60 | mg/l |
| Fecal Coliform | 5000 | MPN/100ml |
| Nitrate-N | 0.20 | mg/l |
| pH | 7.47 | Unit |
| Temperature(Water) | 13 | ⁰C |
| Total Coliform | 11000 | MPN/100ml |
| Boron | 3.54 | mg/l |
| Calcium | 9.62 | mg/l |
| Chloride | 19.57 | mg/l |
| COD | 22.00 | mg/l |
| Fluoride | BDL | mg/l |
| Magnesium | 5.76 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.003 | mg/l |
| Potassium | 1.20 | mg/l |
| Sodium | 3.20 | mg/l |
| Sulphate | 23.65 | mg/l |
| Total Alkalinity | 28.00 | mg/l |
| Total Dissolved Solids(TDS) | 36.00 | mg/l |
| Total Fixed Solids(TFS) | 78.00 | mg/l |
| Total Hardness as CaCo3 | 44.00 | mg/l |
| Total Suspended Solids(TSS) | 357.00 | mg/l |
| Turbidity | 20.80 | NTU |