West Bengal Pollution Control Board |
Siliguri Laboratory |
Paribesh Bhawan, Paribahan Nagar, P.O. Matigara, Siliguri,Darjeeling 734 428. |
| Station: MAHANANDA AT SILIGURI | River Basin: Mahananda | CPCB Station Code: 1946 |
| Sample Date: 11/07/2022 | Sample Time: 12:30 | |
| Human Activities: Cattle Wading | Weather: Cloudy | Water Body: Mahananda at Siliguri |
| Frequency Of Monitoring: Quarterly | Use Based Class: C | Approximate Depth(Bottom/Table): 1.00 m |
| Color & Intensity: Light Green and turbid | Odour: Fishy | Visible effluent discharge: Moderate |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Ammonia-N | BDL | mg/l |
| BOD | 1.50 | mg/l |
| Conductivity | 152.20 | µs/cm |
| Dissolved O2(DO) | 6.70 | mg/l |
| Fecal Coliform | 17000 | MPN/100ml |
| Fecal Streptococci | 120 | MPN/100ml |
| Nitrate-N | 0.43 | mg/l |
| pH | 6.79 | Unit |
| Temperature(Water) | 29 | ⁰C |
| Total Coliform | 35000 | MPN/100ml |
| Boron | 1.00 | mg/l |
| Calcium | 15.20 | mg/l |
| Chloride | 8.80 | mg/l |
| COD | 6.24 | mg/l |
| Fluoride | 0.12 | mg/l |
| Magnesium | 3.40 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.06 | mg/l |
| Potassium | 3.60 | mg/l |
| Sodium | 6.60 | mg/l |
| Sulphate | 11.95 | mg/l |
| Total Alkalinity | 54.00 | mg/l |
| Total Dissolved Solids(TDS) | 98.00 | mg/l |
| Total Fixed Solids(TFS) | 58.00 | mg/l |
| Total Hardness as CaCo3 | 52.00 | mg/l |
| Total Suspended Solids(TSS) | 36.00 | mg/l |
| Turbidity | 9.82 | NTU |