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: 16/03/2021 | Sample Time: 15:20 Hrs. | |
| Human Activities: Washing,Garbage Throwing,Cattle wading,car washing | Weather: Sunny | 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 Moderately Turbid | Odour: Nauseating | Visible effluent discharge: Moderate |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Ammonia-N | 0.24 | mg/l |
| BOD | 2.70 | mg/l |
| Conductivity | 91.16 | µs/cm |
| Dissolved O2(DO) | 6.40 | mg/l |
| Fecal Coliform | 8000 | MPN/100ml |
| Fecal Streptococci | 94 | MPN/100ml |
| Nitrate-N | 0.16 | mg/l |
| pH | 6.92 | Unit |
| Temperature(Water) | 26 | ⁰C |
| Total Coliform | 28000 | MPN/100ml |
| Boron | 0.55 | mg/l |
| Calcium | 4.81 | mg/l |
| Chloride | 7.82 | mg/l |
| COD | 66.00 | mg/l |
| Fluoride | 0.32 | mg/l |
| Magnesium | 3.46 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.005 | mg/l |
| Potassium | 2.60 | mg/l |
| Sodium | 5.80 | mg/l |
| Sulphate | 16.27 | mg/l |
| Total Alkalinity | 68.00 | mg/l |
| Total Dissolved Solids(TDS) | 72.00 | mg/l |
| Total Fixed Solids(TFS) | 176.00 | mg/l |
| Total Hardness as CaCo3 | 24.0 | mg/l |
| Total Suspended Solids(TSS) | 72.00 | mg/l |
| Turbidity | 16.60 | NTU |