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: 11/09/2019 | Sample Time: 12:30Hrs | |
| Human Activities: Fishing,bathing and 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: Fishy | Visible effluent discharge: Moderate |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Dissolved O2(DO) | 6.70 | mg/l |
| Nitrate-N | 2.16 | mg/l |
| pH | 7.80 | Unit |
| Total Coliform | 22000 | MPN/100ml |
| Boron | 0.019 | mg/l |
| Calcium | 20.04 | mg/l |
| Chloride | 16.58 | mg/l |
| Fluoride | BDL | mg/l |
| Magnesium | 2.30 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.019 | mg/l |
| Potassium | 3.80 | mg/l |
| Sulphate | 18.13 | mg/l |
| Total Dissolved Solids(TDS) | 82.00 | mg/l |
| Total Fixed Solids(TFS) | 136.00 | mg/l |
| Total Hardness as CaCo3 | 58.00 | mg/l |
| Total Kjeldahl Nitrogen(TKN) | mg/l | |
| Total Suspended Solids(TSS) | 98.00 | mg/l |
| Turbidity | 130.00 | NTU |
| BOD | 1.40 | mg/l |
| Conductivity | 141.0 | µs/cm |
| Fecal Coliform | 9000 | MPN/100ml |
| COD | 32.29 | mg/l |
| Total Alkalinity | 62.00 | mg/l |
| Temperature | 29 | ⁰C |
| Sodium | 9.20 | mg/l |
| Ammonia-N | 0.43 | mg/l |