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: 22/04/2022 | Sample Time: 10:40 | |
| Human Activities: None | Weather: Cloudy | Water Body: Lake |
| Frequency Of Monitoring: Monthly | Use Based Class: B | Approximate Depth(Bottom/Table): 2.00 m |
| Color & Intensity: Clear and moderately Green | Odour: Fishy | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Ammonia-N | 0.13 | mg/l |
| Turbidity | 2.89 | NTU |
| Anilophos | BDL | ppb |
| COD | 7.00 | mg/l |
| Magnesium | 0.48 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.001 | mg/l |
| Potassium | 1.60 | mg/l |
| Sodium | 4.60 | mg/l |
| Sulphate | 6.85 | mg/l |
| Total Alkalinity | 22.00 | mg/l |
| Total Dissolved Solids(TDS) | 18.00 | mg/l |
| Total Fixed Solids(TFS) | 66.00 | mg/l |
| Total Hardness as CaCo3 | 10.00 | mg/l |
| Total Suspended Solids(TSS) | 6.00 | mg/l |
| Arsenic | BDL | mg/l |
| Mercury | BDL | mg/l |
| Nickel | BDL | mg/l |
| Zinc | BDL | mg/l |
| a-BHC | BDL | ppb |
| a-Endosulphan | BDL | ppb |
| Aldrin | BDL | ppb |
| b-Endosulphan | BDL | ppb |
| BOD | 1.20 | mg/l |
| Chlorpyriphos | BDL | ppb |
| Dieldrin | BDL | ppb |
| Cadmium | BDL | mg/l |
| Chromium Total | BDL | mg/l |
| Copper | BDL | mg/l |
| Iron | BDL | mg/l |
| Lead | BDL | mg/l |
| g-BHC | BDL | ppb |
| Malathion | BDL | ppb |
| Methyl Parathion | BDL | ppb |
| o,p-DDT | BDL | ppb |
| p,p-DDT | BDL | ppb |
| Conductivity | 32.84 | µs/cm |
| Dissolved O2(DO) | 7.60 | mg/l |
| Fecal Coliform | 70 | MPN/100ml |
| Nitrate-N | 0.04 | mg/l |
| pH | 6.26 | Unit |
| Temperature(Water) | 20 | ⁰C |
| Total Coliform | 110 | MPN/100ml |
| Boron | 4.07 | mg/l |
| Calcium | 3.20 | mg/l |
| Chloride | 1.95 | mg/l |
| Fluoride | BDL | mg/l |