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: 15/07/2022 | Sample Time: 15:00 | |
Human Activities: None | Weather: Sunny and Clear. | Water Body: Raidak |
Frequency Of Monitoring: Monthly | Use Based Class: B | Approximate Depth(Bottom/Table): 1.00 m |
Color & Intensity: Light Green and turbid | Odour: Fishy | Visible effluent discharge: None |
Water Quality | ||
---|---|---|
Parameter | Test Result | Unit |
BOD | 2.10 | mg/l |
Total Coliform | 14000 | MPN/100ml |
Boron | 1.39 | mg/l |
Calcium | 27.20 | mg/l |
Chloride | 3.91 | mg/l |
COD | 7.00 | mg/l |
Fluoride | BDL | mg/l |
Magnesium | 10.69 | mg/l |
Phenolpthalein Alkanity | NIL | mg/l |
Phosphate-P | 0.06 | mg/l |
Potassium | 2.50 | mg/l |
Sodium | 4.70 | mg/l |
Sulphate | 10.25 | mg/l |
Total Alkalinity | 114.00 | mg/l |
Total Dissolved Solids(TDS) | 156.00 | mg/l |
Total Fixed Solids(TFS) | 176.00 | mg/l |
Total Hardness as CaCo3 | 112.00 | mg/l |
Total Suspended Solids(TSS) | 30.00 | mg/l |
Turbidity | 6.60 | NTU |
Ammonia-N | BDL | mg/l |
Conductivity | 230.30 | µs/cm |
Dissolved O2(DO) | 7.20 | mg/l |
Fecal Coliform | 7000 | MPN/100ml |
Fecal Streptococci | 22 | MPN/100ml |
Nitrate-N | 0.11 | mg/l |
pH | 7.49 | Unit |
Temperature(Water) | 32 | ⁰C |