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: 24/09/2021 | Sample Time: 14:00 | |
| Human Activities: None | Weather: Sunny and Clear. | Water Body: Delo lake |
| Frequency Of Monitoring: Quarterly | Use Based Class: C | Approximate Depth(Bottom/Table): 1.50 m |
| Color & Intensity: Light Green and clear | Odour: Odour Free | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Ammonia-N | BDL | mg/l |
| BOD | 1.80 | mg/l |
| Conductivity | 33.84 | µs/cm |
| Dissolved O2(DO) | 8.20 | mg/l |
| Fecal Coliform | 110 | MPN/100ml |
| Nitrate-N | 0.02 | mg/l |
| pH | 7.55 | Unit |
| Temperature(Water) | 24 | ⁰C |
| Total Coliform | 220 | MPN/100ml |
| Boron | 1.68 | mg/l |
| Calcium | 13.63 | mg/l |
| Chloride | 0.98 | mg/l |
| COD | 8.00 | mg/l |
| Fluoride | 0.12 | mg/l |
| Magnesium | 6.34 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.001 | mg/l |
| Potassium | BDL | mg/l |
| Sodium | 0.4 | mg/l |
| Sulphate | 2.36 | mg/l |
| Total Alkalinity | 22.00 | mg/l |
| Total Dissolved Solids(TDS) | 10.00 | mg/l |
| Total Fixed Solids(TFS) | 68.00 | mg/l |
| Total Hardness as CaCo3 | 56.00 | mg/l |
| Total Suspended Solids(TSS) | 7.00 | mg/l |
| Turbidity | 0.84 | NTU |