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: 14/03/2022 | Sample Time: 16:40 | |
| Human Activities: Bathing and 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: Moderately Brown and turbid | Odour: Fishy | Visible effluent discharge: Moderate |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| BOD | 2.40 | mg/l |
| Conductivity | 191.60 | µs/cm |
| Dissolved O2(DO) | 6.40 | mg/l |
| Fecal Coliform | 3400 | MPN/100ml |
| Fecal Streptococci | 22 | MPN/100ml |
| Nitrate-N | 2.59 | mg/l |
| pH | 6.71 | Unit |
| Temperature(Water) | 29 | ⁰C |
| Total Coliform | 30000 | MPN/100ml |
| Boron | 0.59 | mg/l |
| Calcium | 22.40 | mg/l |
| Chloride | 16.63 | mg/l |
| COD | 27.60 | mg/l |
| Fluoride | 0.19 | mg/l |
| Magnesium | 4.37 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.014 | mg/l |
| Potassium | 3.70 | mg/l |
| Sodium | 8.20 | mg/l |
| Sulphate | 19.09 | mg/l |
| Total Alkalinity | 76.00 | mg/l |
| Total Dissolved Solids(TDS) | 95.00 | mg/l |
| Total Fixed Solids(TFS) | 178.00 | mg/l |
| Total Hardness as CaCo3 | 74.00 | mg/l |
| Total Suspended Solids(TSS) | 13.00 | mg/l |
| Turbidity | 7.02 | NTU |
| Ammonia-N | 0.18 | mg/l |