West Bengal Pollution Control Board |
Siliguri Laboratory |
Paribesh Bhawan, Paribahan Nagar, P.O. Matigara, Siliguri,Darjeeling 734 428. |
Station: River Raidak at Alipurduar | River Basin: Tista | CPCB Station Code: 4728 |
Sample Date: 21/02/2022 | Sample Time: 14:55 | |
Human Activities: None | Weather: Cloudy. | Water Body: Raidak |
Frequency Of Monitoring: Monthly | Use Based Class: B | Approximate Depth(Bottom/Table): 1.00 m |
Color & Intensity: Light Green and clear | Odour: Fishy. | Visible effluent discharge: None |
Water Quality | ||
---|---|---|
Parameter | Test Result | Unit |
Ammonia-N | BDL | mg/l |
BOD | 1.10 | mg/l |
Conductivity | 153.00 | µs/cm |
Dissolved O2(DO) | 8.00 | mg/l |
Fecal Coliform | 3000 | MPN/100ml |
Fecal Streptococci | 2 | MPN/100ml |
Nitrate-N | 0.36 | mg/l |
pH | 6.95 | Unit |
Temperature(Water) | 17 | ⁰C |
Total Coliform | 5000 | MPN/100ml |
Boron | 0.62 | mg/l |
Calcium | 35.27 | mg/l |
Chloride | 2.93 | mg/l |
COD | 6.24 | mg/l |
Fluoride | BDL | mg/l |
Magnesium | 5.76 | mg/l |
Phenolpthalein Alkanity | NIL | mg/l |
Phosphate-P | 0.007 | mg/l |
Potassium | 0.90 | mg/l |
Sodium | 1.50 | mg/l |
Sulphate | 7.09 | mg/l |
Total Alkalinity | 90.00 | mg/l |
Total Dissolved Solids(TDS) | 76.00 | mg/l |
Total Fixed Solids(TFS) | 54.00 | mg/l |
Total Hardness as CaCo3 | 108.00 | mg/l |
Total Suspended Solids(TSS) | 12.00 | mg/l |
Turbidity | 2.37 | NTU |