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: 31/05/2022 | Sample Time: 11:30 | |
| 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: Odour free | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| BOD | 0.50 | mg/l |
| Conductivity | 39.46 | µs/cm |
| Dissolved O2(DO) | 7.20 | mg/l |
| Fecal Coliform | 60 | MPN/100ml |
| Nitrate-N | 1.19 | mg/l |
| Temperature(Water) | 23 | ⁰C |
| Total Coliform | 120 | MPN/100ml |
| Boron | 3.75 | mg/l |
| Calcium | 3.20 | mg/l |
| Chloride | 2.93 | mg/l |
| COD | 4.80 | mg/l |
| Fluoride | BDL | mg/l |
| Magnesium | 0.48 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.006 | mg/l |
| Potassium | 0.70 | mg/l |
| Sodium | 3.30 | mg/l |
| Sulphate | 3.15 | mg/l |
| Total Alkalinity | 10.00 | mg/l |
| Total Dissolved Solids(TDS) | 21.00 | mg/l |
| Total Fixed Solids(TFS) | 30.00 | mg/l |
| Total Hardness as CaCo3 | 10.00 | mg/l |
| Total Suspended Solids(TSS) | 4.00 | mg/l |
| Turbidity | 0.58 | NTU |
| Ammonia-N | BDL | mg/l |
| pH | 7.24 | Unit |