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: 07/06/2019 | Sample Time: 11:45 | |
| Human Activities: None | Weather: Cloudy and Rainy | 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 |
| Calcium | 5.61 | mg/l |
| Chloride | 6.85 | mg/l |
| Conductivity | 25.48 | µs/cm |
| Boron | 0.003 | mg/l |
| Total Dissolved Solids(TDS) | 10.00 | mg/l |
| Total Fixed Dissoloved Solids(TFDS) | mg/l | |
| Total Fixed Solids(TFS) | 9.00 | mg/l |
| Total Suspended Solids(TSS) | 8.00 | mg/l |
| Potassium | 0.60 | mg/l |
| Sodium | 1.20 | mg/l |
| Sulphate | 2.81 | mg/l |
| Total Alkalinity | 50.00 | mg/l |
| Total Kjeldahl Nitrogen(TKN) | mg/l | |
| Total Hardness as CaCo3 | 16.00 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.061 | mg/l |
| Turbidity | 0.85 | NTU |
| Ammonia-N | 0.12 | mg/l |
| Fluoride | BDL | mg/l |
| pH | 7.80 | Unit |
| Total Coliform | 260 | MPN/100ml |
| BOD | 2.10 | mg/l |
| Dissolved O2(DO) | 7.20 | mg/l |
| Nitrate-N | 0.08 | mg/l |
| Temperature | 18 | ⁰C |
| Fecal Coliform | 90 | MPN/100ml |
| COD | 11.60 | mg/l |
| Magnesium | 16.03 | mg/l |