West Bengal Pollution Control Board |
Siliguri Laboratory |
Paribesh Bhawan, Paribahan Nagar, P.O. Matigara, Siliguri,Darjeeling 734 428. |
| Station: Water Reservior St. Helens School | River Basin: GANGA | CPCB Station Code: 4725 |
| Sample Date: 20/01/2021 | Sample Time: 10:40 | |
| Human Activities: None. | Weather: Cloudy and foggy | Water Body: Lake |
| Frequency Of Monitoring: Monthly | Use Based Class: B | 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 |
| Magnesium | 5.18 | mg/l |
| Total Dissolved Solids(TDS) | 8.00 | mg/l |
| Conductivity | 18.90 | µs/cm |
| Ammonia-N | 0.19 | mg/l |
| BOD | 1.30 | mg/l |
| Dissolved O2(DO) | 8.20 | mg/l |
| Fecal Coliform | 80 | MPN/100ml |
| pH | 7.61 | Unit |
| Temperature(Water) | 8 | ⁰C |
| Total Coliform | 110 | MPN/100ml |
| Boron | 0.34 | mg/l |
| Calcium | 2.4 | mg/l |
| Chloride | 1.95 | mg/l |
| COD | 10.0 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.007 | mg/l |
| Potassium | BDL | mg/l |
| Sodium | 1.8 | mg/l |
| Sulphate | 0.21 | mg/l |
| Total Alkalinity | 64.00 | mg/l |
| Total Hardness as CaCo3 | 24.00 | mg/l |
| Total Suspended Solids(TSS) | 12.00 | mg/l |
| Turbidity | 2.39 | NTU |
| Nitrate-N | 0.02 | mg/l |
| Fluoride | BDL | mg/l |
| Total Fixed Solids(TFS) | 12.00 | mg/l |