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: 23/07/2020 | Sample Time: 12:50 | |
Human Activities: Washing and cattle wading | Weather: Cloudy | Water Body: Raidak |
Frequency Of Monitoring: Monthly | Use Based Class: B | Approximate Depth(Bottom/Table): 1.00 m |
Color & Intensity: Clear and Green | Odour: Fishy | Visible effluent discharge: Moderate |
Water Quality | ||
---|---|---|
Parameter | Test Result | Unit |
Potassium | 0.80 | mg/l |
Conductivity | 141.54 | µs/cm |
Dissolved O2(DO) | 7.10 | mg/l |
Fecal Coliform | 1100 | MPN/100ml |
Nitrate-N | 0.50 | mg/l |
Boron | 2.76 | mg/l |
Calcium | 20.04 | mg/l |
Chloride | 13.69 | mg/l |
COD | 16.00 | mg/l |
Fluoride | 0.12 | mg/l |
Magnesium | 13.82 | mg/l |
Phenolpthalein Alkanity | NIL | mg/l |
Sodium | 1.30 | mg/l |
Sulphate | 10.81 | mg/l |
Total Alkalinity | 36.00 | mg/l |
Total Dissolved Solids(TDS) | 42.00 | mg/l |
Total Fixed Solids(TFS) | 252.00 | mg/l |
Total Hardness as CaCo3 | 98.00 | mg/l |
Total Suspended Solids(TSS) | 26.00 | mg/l |
Turbidity | 0.51 | NTU |
Ammonia-N | 0.11 | mg/l |
BOD | 1.40 | mg/l |
pH | 7.30 | Unit |
Temperature(Water) | 27 | ⁰C |
Total Coliform | 5000 | MPN/100ml |
Phosphate-P | 0.104 | mg/l |