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: 27/08/2021 | Sample Time: 09:30 | |
Human Activities: None | Weather: Cloudy and Rainy. | Water Body: Lake |
Frequency Of Monitoring: Monthly | Use Based Class: B | Approximate Depth(Bottom/Table): 2.00 m |
Color & Intensity: Light Green and clear | Odour: Odour Free | Visible effluent discharge: None |
Water Quality | ||
---|---|---|
Parameter | Test Result | Unit |
Ammonia-N | BDL | mg/l |
BOD | 0.80 | mg/l |
Conductivity | 22.47 | µs/cm |
Dissolved O2(DO) | 7.60 | mg/l |
Fecal Coliform | 70 | MPN/100ml |
Nitrate-N | 0.07 | mg/l |
pH | 7.09 | Unit |
Temperature(Water) | 18 | ⁰C |
Total Coliform | 140 | MPN/100ml |
Boron | 0.29 | mg/l |
Calcium | 7.21 | mg/l |
Chloride | 1.96 | mg/l |
COD | 6.00 | mg/l |
Fluoride | BDL | mg/l |
Magnesium | BDL | mg/l |
Phenolpthalein Alkanity | NIL | mg/l |
Phosphate-P | 0.001 | mg/l |
Potassium | BDL | mg/l |
Sodium | 0.30 | mg/l |
Sulphate | 1.74 | mg/l |
Total Alkalinity | 36.00 | mg/l |
Total Dissolved Solids(TDS) | 10.00 | mg/l |
Total Fixed Solids(TFS) | 18.00 | mg/l |
Total Hardness as CaCo3 | 18.00 | mg/l |
Total Suspended Solids(TSS) | 6.00 | mg/l |
Turbidity | 3.69 | NTU |