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: 06/12/2021 | Sample Time: 15:55 Hrs | |
| Human Activities: Bathing,washing and fishing | 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 Turbid | Odour: Nauseating | Visible effluent discharge: Moderate |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Ammonia-N | BDL | mg/l |
| BOD | 1.90 | mg/l |
| Conductivity | 111.40 | µs/cm |
| Dissolved O2(DO) | 6.60 | mg/l |
| Fecal Coliform | 2200 | MPN/100ml |
| Fecal Streptococci | 25 | MPN/100ml |
| Nitrate-N | 0.13 | mg/l |
| pH | 6.87 | Unit |
| Temperature(Water) | 21 | ⁰C |
| Total Coliform | 9000 | MPN/100ml |
| Boron | 2.32 | mg/l |
| Calcium | 23.24 | mg/l |
| Chloride | 6.84 | mg/l |
| COD | 28.0 | mg/l |
| Fluoride | 0.21 | mg/l |
| Magnesium | 1.728 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.005 | mg/l |
| Potassium | 1.5 | mg/l |
| Sodium | 2.7 | mg/l |
| Sulphate | 11.04 | mg/l |
| Total Alkalinity | 40.00 | mg/l |
| Total Dissolved Solids(TDS) | 67.00 | mg/l |
| Total Fixed Solids(TFS) | 44.00 | mg/l |
| Total Hardness as CaCo3 | 64.00 | mg/l |
| Total Suspended Solids(TSS) | 14.00 | mg/l |
| Turbidity | 7.77 | NTU |