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: 08/11/2021 | Sample Time: 14:40 | |
| 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 moderately turbid | Odour: Fishy. | Visible effluent discharge: Moderate |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Ammonia-N | 0.13 | mg/l |
| BOD | 1.90 | mg/l |
| Conductivity | 118.50 | µs/cm |
| Dissolved O2(DO) | 6.90 | mg/l |
| Fecal Coliform | 7000 | MPN/100ml |
| Fecal Streptococci | 140 | MPN/100ml |
| Nitrate-N | 0.19 | mg/l |
| pH | 6.86 | Unit |
| Temperature(Water) | 24 | ⁰C |
| Total Coliform | 14000 | MPN/100ml |
| Boron | 7.62 | mg/l |
| Calcium | 28.05 | mg/l |
| Chloride | 17.61 | mg/l |
| COD | 22.00 | mg/l |
| Fluoride | 0.16 | mg/l |
| Magnesium | 6.33 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | BDL | mg/l |
| Potassium | 1.70 | mg/l |
| Sodium | 3.70 | mg/l |
| Sulphate | 7.76 | mg/l |
| Total Alkalinity | 74.00 | mg/l |
| Total Dissolved Solids(TDS) | 72.00 | mg/l |
| Total Fixed Solids(TFS) | 34.00 | mg/l |
| Total Hardness as CaCo3 | 92.00 | mg/l |
| Total Suspended Solids(TSS) | 84.00 | mg/l |
| Turbidity | 2.16 | NTU |