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: 27/01/2020 | Sample Time: 11:00 | |
| 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: Clear and Light Green | Odour: None | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| BOD | 0.60 | mg/l |
| Conductivity | 19.61 | µs/cm |
| Total Fixed Solids(TFS) | 20.00 | mg/l |
| Turbidity | 1.02 | NTU |
| Chloride | 7.83 | mg/l |
| Total Suspended Solids(TSS) | 8.00 | mg/l |
| Nitrate-N | 0.32 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| pH | 7.20 | Unit |
| Magnesium | 3.46 | mg/l |
| Fecal Coliform | 90 | MPN/100ml |
| Calcium | 9.62 | mg/l |
| Dissolved O2(DO) | 7.40 | mg/l |
| Ammonia-N | 0.13 | mg/l |
| Temperature | 8 | ⁰C |
| Total Coliform | 170 | MPN/100ml |
| Phosphate-P | 0.008 | mg/l |
| Total Hardness as CaCo3 | 36.00 | mg/l |
| COD | 11.00 | mg/l |
| Fluoride | BDL | mg/l |
| Potassium | 0.2 | mg/l |
| Boron | 0.60 | mg/l |
| Sodium | BDL | mg/l |
| Sulphate | 4.00 | mg/l |
| Total Alkalinity | 76.00 | mg/l |
| Total Dissolved Solids(TDS) | 14.00 | mg/l |