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: 29/10/2021 | Sample Time: 15:30 | |
| Human Activities: Horse riding ,fish feeding and boating. | Weather: Sunny | 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: Septic | Visible effluent discharge: Moderate |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Ammonia-N | 0.16 | mg/l |
| BOD | 1.80 | mg/l |
| Conductivity | 76.61 | µs/cm |
| Dissolved O2(DO) | 6.80 | mg/l |
| Fecal Coliform | 3400 | MPN/100ml |
| Nitrate-N | 0.15 | mg/l |
| pH | 6.50 | Unit |
| Temperature(Water) | 24 | ⁰C |
| Total Coliform | 13000 | MPN/100ml |
| Boron | 0.97 | mg/l |
| Calcium | 22.44 | mg/l |
| Chloride | 6.85 | mg/l |
| COD | 18.00 | mg/l |
| Fluoride | BDL | mg/l |
| Magnesium | 12.67 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.007 | mg/l |
| Potassium | 3.80 | mg/l |
| Sodium | 8.10 | mg/l |
| Sulphate | 1.44 | mg/l |
| Total Alkalinity | 36.00 | mg/l |
| Total Dissolved Solids(TDS) | 42.00 | mg/l |
| Total Fixed Solids(TFS) | 22.00 | mg/l |
| Total Hardness as CaCo3 | 56.00 | mg/l |
| Total Suspended Solids(TSS) | 20.00 | mg/l |
| Turbidity | 12.40 | NTU |