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: 31/05/2019 | Sample Time: 15:15 | |
| 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 | Odour: Fishy | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Fluoride | BDL | mg/l |
| Magnesium | 5.76 | mg/l |
| BOD | 2.70 | mg/l |
| Conductivity | 119.67 | µs/cm |
| Dissolved O2(DO) | 7.60 | mg/l |
| Fecal Coliform | 2300 | MPN/100ml |
| Nitrate-N | 0.07 | mg/l |
| pH | 7.42 | Unit |
| Temperature | 24 | ⁰C |
| Total Coliform | 5000 | MPN/100ml |
| Calcium | 13.62 | mg/l |
| Chloride | 27.40 | mg/l |
| COD | 34.77 | mg/l |
| Total Kjeldahl Nitrogen(TKN) | mg/l | |
| Total Suspended Solids(TSS) | 14.00 | mg/l |
| Turbidity | 5.91 | NTU |
| Potassium | 1.10 | mg/l |
| Sodium | 1.50 | mg/l |
| Boron | 0.005 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.081 | mg/l |
| Total Dissolved Solids(TDS) | 28.00 | mg/l |
| Total Alkalinity | 100.00 | mg/l |
| Total Fixed Solids(TFS) | 90.00 | mg/l |
| Total Hardness as CaCo3 | 82.00 | mg/l |
| Sulphate | 8.21 | mg/l |
| Ammonia-N | 0.15 | mg/l |