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: 31/10/2019 | Sample Time: 13:20 | |
| Human Activities: None | Weather: Sunny and Calm | 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: Odour free | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Phosphate-P | 0.084 | mg/l |
| Potassium | BDL | mg/l |
| Sodium | 0.50 | mg/l |
| Sulphate | 4.22 | mg/l |
| Total Alkalinity | 18.00 | mg/l |
| Total Dissolved Solids(TDS) | 12.00 | mg/l |
| Total Fixed Solids(TFS) | 416.00 | mg/l |
| Total Hardness as CaCo3 | 16.00 | mg/l |
| Total Suspended Solids(TSS) | 10.00 | mg/l |
| Turbidity | 2.63 | NTU |
| Ammonia-N | BDL | mg/l |
| BOD | 0.90 | mg/l |
| Conductivity | 12.94 | µs/cm |
| Dissolved O2(DO) | 7.40 | mg/l |
| Fecal Coliform | 70 | MPN/100ml |
| Nitrate-N | NT | mg/l |
| pH | 7.20 | Unit |
| Temperature | 12 | ⁰C |
| Total Coliform | 110 | MPN/100ml |
| Boron | 0.004 | mg/l |
| Calcium | 4.00 | mg/l |
| Chloride | 2.93 | mg/l |
| COD | 8.00 | mg/l |
| Fluoride | 0.14 | mg/l |
| Magnesium | 1.73 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |