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: 30/12/2019 | Sample Time: 15:40 Hrs | |
| Human Activities: None | Weather: Sunny and Clear. | Water Body: Lake |
| Frequency Of Monitoring: Monthly | Use Based Class: B | Approximate Depth(Bottom/Table): 1.00 m |
| Color & Intensity: Moderately Green and Clear. | Odour: None | Visible effluent discharge: None. |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Ammonia-N | BDL | mg/l |
| BOD | 0.60 | mg/l |
| Conductivity | 22.80 | µs/cm |
| Dissolved O2(DO) | 7.40 | mg/l |
| Nitrate-N | 1.01 | mg/l |
| pH | 7.34 | Unit |
| Fecal Coliform | 120 | MPN/100ml |
| Temperature | 9 | ⁰C |
| Total Coliform | 270 | MPN/100ml |
| Calcium | 5.61 | mg/l |
| Boron | 0.003 | mg/l |
| Chloride | 4.89 | mg/l |
| COD | 13.00 | mg/l |
| Fluoride | BDL | mg/l |
| Magnesium | 2.88 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.005 | mg/l |
| Potassium | 0.30 | mg/l |
| Sodium | BDL | mg/l |
| Sulphate | 3.38 | mg/l |
| Total Alkalinity | 18.00 | mg/l |
| Total Dissolved Solids(TDS) | 18.00 | mg/l |
| Total Fixed Solids(TFS) | 50.00 | mg/l |
| Total Hardness as CaCo3 | 24.00 | mg/l |
| Total Suspended Solids(TSS) | 10.00 | mg/l |
| Turbidity | 3.56 | NTU |