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: 22/07/2020 | Sample Time: 10:30 | |
| Human Activities: None | Weather: Sunny | 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 |
| Total Dissolved Solids(TDS) | 28.00 | mg/l |
| Total Hardness as CaCo3 | 24.00 | mg/l |
| Total Suspended Solids(TSS) | 16.00 | mg/l |
| Turbidity | 0.58 | NTU |
| Total Fixed Solids(TFS) | 30.00 | mg/l |
| Ammonia-N | 0.51 | mg/l |
| Magnesium | 2.88 | mg/l |
| Temperature(Water) | 11 | ⁰C |
| Conductivity | 28.10 | µs/cm |
| Boron | 0.44 | mg/l |
| Calcium | 5.61 | mg/l |
| Chloride | 4.89 | mg/l |
| COD | 14.00 | mg/l |
| Fluoride | BDL | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.077 | mg/l |
| Sodium | BDL | mg/l |
| Sulphate | 2.51 | mg/l |
| Total Alkalinity | 16.00 | mg/l |
| Potassium | BDL | mg/l |
| BOD | 1.80 | mg/l |
| Dissolved O2(DO) | 7.20 | mg/l |
| Fecal Coliform | 70 | MPN/100ml |
| Nitrate-N | 0.91 | mg/l |
| pH | 7.40 | Unit |
| Total Coliform | 220 | MPN/100ml |