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: 20/05/2022 | Sample Time: 12:40 | |
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: Moderately green and clear | Odour: Fishy | Visible effluent discharge: None |
Water Quality | ||
---|---|---|
Parameter | Test Result | Unit |
Ammonia-N | 0.12 | mg/l |
BOD | 1.50 | mg/l |
Conductivity | 203.80 | µs/cm |
Dissolved O2(DO) | 8.30 | mg/l |
Fecal Coliform | 5000 | MPN/100ml |
Fecal Streptococci | 33 | MPN/100ml |
Nitrate-N | 0.26 | mg/l |
pH | 7.63 | Unit |
Temperature(Water) | 27 | ⁰C |
Total Coliform | 14000 | MPN/100ml |
Boron | 4.03 | mg/l |
Calcium | 24.00 | mg/l |
Chloride | 2.93 | mg/l |
COD | 11.00 | mg/l |
Fluoride | BDL | mg/l |
Magnesium | 9.72 | mg/l |
Phenolpthalein Alkanity | NIL | mg/l |
Phosphate-P | 0.004 | mg/l |
Potassium | 3.00 | mg/l |
Sodium | 4.60 | mg/l |
Sulphate | 16.37 | mg/l |
Total Alkalinity | 110.00 | mg/l |
Total Dissolved Solids(TDS) | 107.00 | mg/l |
Total Fixed Solids(TFS) | 120.00 | mg/l |
Total Hardness as CaCo3 | 100.00 | mg/l |
Total Suspended Solids(TSS) | 12.00 | mg/l |
Turbidity | 2.98 | NTU |