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: 17/08/2021 | Sample Time: 15:15 | |
| Human Activities: Washing | Weather: Sunny and Clear. | Water Body: Mahananda at Siliguri |
| Frequency Of Monitoring: Quarterly | Use Based Class: C | Approximate Depth(Bottom/Table): 1.00 m |
| Color & Intensity: Light Brown and moderately turbid | Odour: Fishy | Visible effluent discharge: Moderate |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Ammonia-N | 0.15 | mg/l |
| BOD | 1.70 | mg/l |
| Conductivity | 68.42 | µs/cm |
| Dissolved O2(DO) | 7.20 | mg/l |
| Fecal Coliform | 5000 | MPN/100ml |
| Fecal Streptococci | 32 | MPN/100ml |
| Nitrate-N | 0.24 | mg/l |
| pH | 7.61 | Unit |
| Temperature(Water) | 28 | ⁰C |
| Total Coliform | 14000 | MPN/100ml |
| Boron | 0.54 | mg/l |
| Calcium | 8.82 | mg/l |
| Chloride | 12.72 | mg/l |
| COD | 21.00 | mg/l |
| Fluoride | 0.23 | mg/l |
| Magnesium | 1.27 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.005 | mg/l |
| Potassium | 1.30 | mg/l |
| Sodium | 1.20 | mg/l |
| Sulphate | 4.06 | mg/l |
| Total Alkalinity | 74.00 | mg/l |
| Total Dissolved Solids(TDS) | 42.00 | mg/l |
| Total Fixed Solids(TFS) | 44.00 | mg/l |
| Total Hardness as CaCo3 | 66.00 | mg/l |
| Total Suspended Solids(TSS) | 18.00 | mg/l |
| Turbidity | 1.27 | NTU |