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: 24/12/2020 | Sample Time: 10:00 | |
| Human Activities: Fishing | Weather: Sunny and Clear. | Water Body: Jaldhaka |
| Frequency Of Monitoring: Monthly | Use Based Class: B | Approximate Depth(Bottom/Table): 1.00 m |
| Color & Intensity: Moderately green | Odour: Fishy | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Dissolved O2(DO) | 6.60 | mg/l |
| Fecal Streptococci | 6 | MPN/100ml |
| pH | 7.24 | Unit |
| Temperature(Water) | 20 | ⁰C |
| Boron | 1.79 | mg/l |
| Chloride | 3.91 | mg/l |
| COD | 38.00 | mg/l |
| Fluoride | 0.11 | mg/l |
| Magnesium | 6.33 | mg/l |
| Phosphate-P | 0.010 | mg/l |
| Potassium | 1.60 | mg/l |
| Ammonia-N | BDL | mg/l |
| BOD | 1.40 | mg/l |
| Fecal Coliform | 3400 | MPN/100ml |
| Total Coliform | 17000 | MPN/100ml |
| Sodium | 2.80 | mg/l |
| Sulphate | 16.50 | mg/l |
| Total Alkalinity | 26.00 | mg/l |
| Total Dissolved Solids(TDS) | 42.00 | mg/l |
| Total Fixed Solids(TFS) | 100.00 | mg/l |
| Total Suspended Solids(TSS) | 84.00 | mg/l |
| Turbidity | 3.10 | NTU |
| Conductivity | 64.78 | µs/cm |
| Nitrate-N | 0.028 | mg/l |
| Calcium | 14.42 | mg/l |
| Total Hardness as CaCo3 | 58.00 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |