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: 25/01/2022 | Sample Time: 09:00 | |
| Human Activities: None | Weather: Cloudy. | 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: Fishy. | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Ammonia-N | BDL | mg/l |
| BOD | 2.20 | mg/l |
| Conductivity | 95.76 | µs/cm |
| Dissolved O2(DO) | 6.80 | mg/l |
| Nitrate-N | 0.04 | mg/l |
| pH | 7.52 | Unit |
| Temperature(Water) | 7 | ⁰C |
| Total Coliform | 11000 | MPN/100ml |
| Boron | 2.45 | mg/l |
| Calcium | 13.62 | mg/l |
| Chloride | 10.76 | mg/l |
| COD | 25.00 | mg/l |
| Fluoride | BDL | mg/l |
| Magnesium | 3.45 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.003 | mg/l |
| Sodium | 7.40 | mg/l |
| Sulphate | 1.09 | mg/l |
| Total Alkalinity | 10.00 | mg/l |
| Total Dissolved Solids(TDS) | 48.00 | mg/l |
| Total Fixed Solids(TFS) | 96.00 | mg/l |
| Total Hardness as CaCo3 | 40.00 | mg/l |
| Total Suspended Solids(TSS) | 50.00 | mg/l |
| Turbidity | 1.02 | NTU |
| Fecal Coliform | 5000 | MPN/100ml |
| Potassium | 1.50 | mg/l |