West Bengal Pollution Control Board |
Siliguri Laboratory |
Paribesh Bhawan, Paribahan Nagar, P.O. Matigara, Siliguri,Darjeeling 734 428. |
| Station: River Jaldhaka at Dhupguri | River Basin: Tista | CPCB Station Code: 4717 |
| Sample Date: 19/08/2020 | Sample Time: 11.45 | |
| Human Activities: None | Weather: Cloudy | Water Body: Jaldhaka |
| Frequency Of Monitoring: Monthly | Use Based Class: B | Approximate Depth(Bottom/Table): 1.00 m |
| Color & Intensity: Clear and Moderately Green | Odour: Fishy | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| BOD | 1.20 | mg/l |
| Dissolved O2(DO) | 7.20 | mg/l |
| Fecal Coliform | 7000 | MPN/100ml |
| Nitrate-N | 1.00 | mg/l |
| pH | 7.07 | Unit |
| Temperature(Water) | 28 | ⁰C |
| Total Coliform | 22000 | MPN/100ml |
| Boron | 4.79 | mg/l |
| Calcium | 14.42 | mg/l |
| Chloride | 3.91 | mg/l |
| COD | 22.00 | mg/l |
| Magnesium | 6.35 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.031 | mg/l |
| Potassium | 5.6 | mg/l |
| Sodium | 5.4 | mg/l |
| Sulphate | 13.26 | mg/l |
| Total Dissolved Solids(TDS) | 59.0 | mg/l |
| Total Fixed Solids(TFS) | 204.00 | mg/l |
| Total Hardness as CaCo3 | 58.0 | mg/l |
| Total Suspended Solids(TSS) | 175.0 | mg/l |
| Ammonia-N | 0.13 | mg/l |
| Fluoride | BDL | mg/l |
| Total Alkalinity | 60.0 | mg/l |
| Turbidity | 65.20 | NTU |
| Conductivity | 102.40 | µs/cm |