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: 31/03/2021 | Sample Time: 12:15 Hrs | |
| Human Activities: None | Weather: Sunny | 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 |
| Ammonia-N | BDL | mg/l |
| BOD | 0.50 | mg/l |
| Conductivity | 29.00 | µs/cm |
| Dissolved O2(DO) | 7.30 | mg/l |
| Fecal Coliform | 80 | MPN/100ml |
| Nitrate-N | 0.05 | mg/l |
| pH | 6.88 | Unit |
| Total Coliform | 110 | MPN/100ml |
| Boron | 0.50 | mg/l |
| Calcium | 2.40 | mg/l |
| COD | 6.00 | mg/l |
| Fluoride | BDL | mg/l |
| Magnesium | 1.73 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.002 | mg/l |
| Potassium | 4.2 | mg/l |
| Sodium | BDL | mg/l |
| Sulphate | 2.24 | mg/l |
| Total Alkalinity | 30.0 | mg/l |
| Total Dissolved Solids(TDS) | 12.00 | mg/l |
| Total Fixed Solids(TFS) | 10.00 | mg/l |
| Total Hardness as CaCo3 | 12.00 | mg/l |
| Total Suspended Solids(TSS) | 8.00 | mg/l |
| Turbidity | 4.11 | NTU |
| Temperature(Water) | 18 | ⁰C |
| Chloride | 1.95 | mg/l |