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: 13/10/2021 | Sample Time: 15:40 | |
| Human Activities: Bathing,Washing Clothes and Fishing | Weather: Sunny | Water Body: Mahananda at Siliguri |
| Frequency Of Monitoring: Quarterly | Use Based Class: C | Approximate Depth(Bottom/Table): 1.00 m |
| Color & Intensity: Green and Moderately turbid | Odour: Fishy | Visible effluent discharge: Moderate |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Ammonia-N | BDL | mg/l |
| BOD | 1.20 | mg/l |
| Conductivity | 44.60 | µs/cm |
| Dissolved O2(DO) | 6.90 | mg/l |
| Fecal Coliform | 3000 | MPN/100ml |
| Fecal Streptococci | 17 | MPN/100ml |
| Nitrate-N | 0.17 | mg/l |
| Turbidity | 4.80 | NTU |
| pH | 6.50 | Unit |
| Temperature(Water) | 30 | ⁰C |
| Total Coliform | 11000 | MPN/100ml |
| Boron | 0.44 | mg/l |
| Calcium | 10.42 | mg/l |
| Chloride | 2.94 | mg/l |
| COD | 22.00 | mg/l |
| Fluoride | 0.11 | mg/l |
| Magnesium | 5.18 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.005 | mg/l |
| Potassium | 1.50 | mg/l |
| Sodium | 7.20 | mg/l |
| Sulphate | 9.13 | mg/l |
| Total Alkalinity | 62.00 | mg/l |
| Total Dissolved Solids(TDS) | 18.00 | mg/l |
| Total Fixed Solids(TFS) | 128.00 | mg/l |
| Total Hardness as CaCo3 | 44.00 | mg/l |
| Total Suspended Solids(TSS) | 24.00 | mg/l |