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: 10/06/2022 | Sample Time: 13:00 | |
| Human Activities: Bathing and Washing | Weather: Cloudy | Water Body: Mahananda at Siliguri |
| Frequency Of Monitoring: Quarterly | Use Based Class: C | Approximate Depth(Bottom/Table): 1.00 m |
| Color & Intensity: Moderately Brown and turbid | Odour: Septic. | Visible effluent discharge: Moderate |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| BOD | 1.80 | mg/l |
| Conductivity | 185.40 | µs/cm |
| Dissolved O2(DO) | 6.90 | mg/l |
| Fecal Coliform | 14000 | MPN/100ml |
| Fecal Streptococci | 49 | MPN/100ml |
| Nitrate-N | 1.01 | mg/l |
| pH | 6.98 | Unit |
| Temperature(Water) | 25 | ⁰C |
| Total Coliform | 28000 | MPN/100ml |
| Boron | 4.41 | mg/l |
| Calcium | 18.40 | mg/l |
| Chloride | 8.80 | mg/l |
| COD | 11.44 | mg/l |
| Fluoride | 0.11 | mg/l |
| Magnesium | 4.86 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.011 | mg/l |
| Potassium | 2.80 | mg/l |
| Sodium | 11.0 | mg/l |
| Sulphate | 12.37 | mg/l |
| Total Alkalinity | 64.00 | mg/l |
| Total Dissolved Solids(TDS) | 92.00 | mg/l |
| Total Fixed Solids(TFS) | 196.00 | mg/l |
| Total Hardness as CaCo3 | 66.00 | mg/l |
| Total Suspended Solids(TSS) | 89.00 | mg/l |
| Turbidity | 55.08 | NTU |
| Ammonia-N | 0.14 | mg/l |