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: 20/04/2021 | Sample Time: 11:00 | |
| Human Activities: Bathing and 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: Moderately green | Odour: Fishy | Visible effluent discharge: Moderate |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Dissolved O2(DO) | 7.10 | mg/l |
| Fecal Coliform | 7000 | MPN/100ml |
| Fecal Streptococci | 70 | MPN/100ml |
| pH | 6.90 | Unit |
| Temperature(Water) | 29 | ⁰C |
| Total Coliform | 22000 | MPN/100ml |
| Boron | 0.80 | mg/l |
| COD | 56.00 | mg/l |
| Fluoride | 0.25 | mg/l |
| Magnesium | 10.94 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.008 | mg/l |
| Potassium | 3.80 | mg/l |
| Sodium | 9.60 | mg/l |
| Sulphate | 16.84 | mg/l |
| Total Alkalinity | 76.00 | mg/l |
| Total Fixed Solids(TFS) | 8.00 | mg/l |
| Total Hardness as CaCo3 | 80.00 | mg/l |
| Total Suspended Solids(TSS) | 52.00 | mg/l |
| Turbidity | 10.10 | NTU |
| Arsenic | BDL | mg/l |
| Cadmium | BDL | mg/l |
| Chromium Total | BDL | mg/l |
| Copper | BDL | mg/l |
| Iron | 0.38 | mg/l |
| Lead | BDL | mg/l |
| Mercury | BDL | mg/l |
| Nickel | BDL | mg/l |
| Zinc | BDL | mg/l |
| a-BHC | ppb | |
| a-Endosulphan | ppb | |
| Aldrin | ppb | |
| Anilophos | ppb | |
| b-Endosulphan | ppb | |
| Chlorpyriphos | ppb | |
| Dieldrin | ppb | |
| g-BHC | ppb | |
| Malathion | ppb | |
| Methyl Parathion | ppb | |
| o,p-DDT | ppb | |
| p,p-DDT | ppb | |
| Calcium | 16.83 | mg/l |
| Ammonia-N | 0.70 | mg/l |
| Nitrate-N | 0.49 | mg/l |
| BOD | 2.10 | mg/l |
| Chloride | 7.83 | mg/l |
| Conductivity | 90.86 | µs/cm |
| Total Dissolved Solids(TDS) | 64.00 | mg/l |