West Bengal Pollution Control Board |
Siliguri Laboratory |
Paribesh Bhawan, Paribahan Nagar, P.O. Matigara, Siliguri,Darjeeling 734 428. |
| Station: WATER RESERVIOR AT DELO | River Basin: Tista | CPCB Station Code: 2521 |
| Sample Date: 30/12/2021 | Sample Time: 14:30 Hrs | |
| Human Activities: None | Weather: Sunny and clear | Water Body: Delo lake |
| Frequency Of Monitoring: Quarterly | Use Based Class: C | Approximate Depth(Bottom/Table): 1.00 m |
| Color & Intensity: Light Green and Clear | Odour: None | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| BOD | 0.80 | mg/l |
| Conductivity | 25.78 | µs/cm |
| Dissolved O2(DO) | 8.00 | mg/l |
| Fecal Coliform | 110 | MPN/100ml |
| Nitrate-N | 0.05 | mg/l |
| pH | 7.52 | Unit |
| Temperature(Water) | 9 | ⁰C |
| Total Coliform | 210 | MPN/100ml |
| Boron | 1.81 | mg/l |
| Calcium | 4.0 | mg/l |
| Chloride | 2.935 | mg/l |
| COD | 13.44 | mg/l |
| Magnesium | 1.728 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.004 | mg/l |
| Potassium | 1.20 | mg/l |
| Sodium | 2.20 | mg/l |
| Sulphate | 0.11 | mg/l |
| Total Alkalinity | 22.00 | mg/l |
| Total Dissolved Solids(TDS) | 18.00 | mg/l |
| Total Fixed Solids(TFS) | 86.00 | mg/l |
| Total Hardness as CaCo3 | 16.00 | mg/l |
| Total Suspended Solids(TSS) | 13.00 | mg/l |
| Turbidity | 1.37 | NTU |
| Ammonia-N | BDL | mg/l |
| Fluoride | BDL | mg/l |