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: 22/04/2021 | Sample Time: 11:30 | |
| 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: Light Green | Odour: None | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Ammonia-N | 0.55 | mg/l |
| BOD | 0.50 | mg/l |
| Conductivity | 26.01 | µs/cm |
| Dissolved O2(DO) | 7.20 | mg/l |
| Fecal Coliform | 80 | MPN/100ml |
| Nitrate-N | 0.07 | mg/l |
| pH | 7.02 | Unit |
| Temperature(Water) | 11 | ⁰C |
| Total Coliform | 210 | MPN/100ml |
| Boron | 1.10 | mg/l |
| Calcium | 4.80 | mg/l |
| Chloride | 4.89 | mg/l |
| COD | 18.00 | mg/l |
| Fluoride | BDL | mg/l |
| Magnesium | 4.60 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.001 | mg/l |
| Potassium | BDL | mg/l |
| Sodium | BDL | mg/l |
| Sulphate | 2.11 | mg/l |
| Total Alkalinity | 24.0 | mg/l |
| Total Fixed Solids(TFS) | 14.00 | mg/l |
| Total Hardness as CaCo3 | 28.0 | mg/l |
| Total Suspended Solids(TSS) | 8.00 | mg/l |
| Turbidity | 18.20 | NTU |
| Arsenic | mg/l | |
| Cadmium | BDL | mg/l |
| Chromium Total | BDL | mg/l |
| Copper | BDL | mg/l |
| Iron | 0.35 | mg/l |
| Lead | BDL | mg/l |
| Mercury | BDL | mg/l |
| Nickel | BDL | mg/l |
| Zinc | BDL | mg/l |
| a-BHC | ppb | |
| a-Endosulphan | ppb | |
| Aldrin | ppb | |
| Anilophos | ppb | |
| b-Endosulphan | ppb | |
| Chlorpyriphos | ppb | |
| Dieldrin | ppb | |
| g-BHC | ppb | |
| Malathion | ppb | |
| Methyl Parathion | ppb | |
| o,p-DDT | ppb | |
| p,p-DDT | ppb | |
| Total Dissolved Solids(TDS) | 12.00 | mg/l |