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: 21/01/2020 | Sample Time: 13:10 Hrs | |
Human Activities: None | Weather: Clear and Sunny | Water Body: Raidak |
Frequency Of Monitoring: Monthly | Use Based Class: B | Approximate Depth(Bottom/Table): 1.00 m |
Color & Intensity: Moderately Brown and Muddy | Odour: Fishy | Visible effluent discharge: None |
Water Quality | ||
---|---|---|
Parameter | Test Result | Unit |
Fecal Coliform | 2100 | MPN/100ml |
Ammonia-N | 0.14 | mg/l |
Conductivity | 124.13 | µs/cm |
BOD | 0.80 | mg/l |
Dissolved O2(DO) | 7.40 | mg/l |
Fluoride | BDL | mg/l |
Turbidity | 3.54 | NTU |
Nitrate-N | 0.53 | mg/l |
pH | 7.40 | Unit |
Calcium | 22.44 | mg/l |
Temperature | 18 | ⁰C |
Total Coliform | 5000 | MPN/100ml |
Magnesium | 8.06 | mg/l |
Phenolpthalein Alkanity | NIL | mg/l |
Chloride | 7.83 | mg/l |
COD | 27.00 | mg/l |
Phosphate-P | 0.018 | mg/l |
Potassium | 2.0 | mg/l |
Sodium | 0.40 | mg/l |
Total Alkalinity | 84.00 | mg/l |
Total Dissolved Solids(TDS) | 48.00 | mg/l |
Total Fixed Solids(TFS) | 52.00 | mg/l |
Sulphate | 20.83 | mg/l |
Total Hardness as CaCo3 | 110.00 | mg/l |
Total Suspended Solids(TSS) | 20.00 | mg/l |
Boron | 5.10 | mg/l |