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: 01/07/2019 | Sample Time: 14:30 | |
| 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 dark Green | Odour: Odour free | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| BOD | 1.80 | mg/l |
| Sodium | BDL | mg/l |
| COD | 5.93 | mg/l |
| Fluoride | BDL | mg/l |
| Nitrate-N | 0.03 | mg/l |
| Total Coliform | 500 | MPN/100ml |
| Boron | 0.003 | mg/l |
| Total Kjeldahl Nitrogen(TKN) | mg/l | |
| Total Suspended Solids(TSS) | 10.00 | mg/l |
| Turbidity | 3.56 | NTU |
| Ammonia-N | 0.37 | mg/l |
| Potassium | BDL | mg/l |
| Conductivity | 33.19 | µs/cm |
| Dissolved O2(DO) | 7.90 | mg/l |
| Fecal Coliform | 170 | MPN/100ml |
| pH | 7.60 | Unit |
| Temperature | 17 | ⁰C |
| Calcium | 10.42 | mg/l |
| Sulphate | 2.07 | mg/l |
| Total Alkalinity | 76.0 | mg/l |
| Chloride | 6.85 | mg/l |
| Magnesium | 3.46 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.101 | mg/l |
| Total Dissolved Solids(TDS) | 14.00 | mg/l |
| Total Fixed Solids(TFS) | 101.00 | mg/l |
| Total Hardness as CaCo3 | 38.0 | mg/l |