West Bengal Pollution Control Board |
Siliguri Laboratory |
Paribesh Bhawan, Paribahan Nagar, P.O. Matigara, Siliguri,Darjeeling 734 428. |
| Station: River Mechi at Nehaljote | River Basin: Mahananda | CPCB Station Code: 4727 |
| Sample Date: 20/04/2022 | Sample Time: 15:15 | |
| Human Activities: Bathing and Washing and Fishing. | Weather: Sunny and Clear. | Water Body: Mechi |
| Frequency Of Monitoring: Monthly | Use Based Class: B | Approximate Depth(Bottom/Table): 1.00 m |
| Color & Intensity: Light Brown and moderately turbid | Odour: Fishy | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Boron | 11.39 | mg/l |
| Calcium | 5.60 | mg/l |
| Chloride | 4.89 | mg/l |
| o,p-DDT | BDL | ppb |
| p,p-DDT | BDL | ppb |
| COD | 14.00 | mg/l |
| Fluoride | 0.12 | mg/l |
| Magnesium | 1.94 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Phosphate-P | 0.001 | mg/l |
| Potassium | 6.10 | mg/l |
| Sodium | 11.80 | mg/l |
| Sulphate | 15.75 | mg/l |
| Total Alkalinity | 20.00 | mg/l |
| Total Dissolved Solids(TDS) | 48.00 | mg/l |
| Total Fixed Solids(TFS) | 52.00 | mg/l |
| Total Hardness as CaCo3 | 22.00 | mg/l |
| Total Suspended Solids(TSS) | 24.00 | mg/l |
| Turbidity | 4.03 | NTU |
| Arsenic | BDL | mg/l |
| Cadmium | BDL | mg/l |
| Chromium Total | BDL | mg/l |
| Copper | BDL | mg/l |
| Iron | 0.29 | mg/l |
| Lead | BDL | mg/l |
| Mercury | BDL | mg/l |
| Zinc | BDL | mg/l |
| a-BHC | BDL | ppb |
| Nickel | BDL | mg/l |
| a-Endosulphan | BDL | ppb |
| Ammonia-N | BDL | mg/l |
| BOD | 1.80 | mg/l |
| Conductivity | 80.75 | µs/cm |
| Dissolved O2(DO) | 7.60 | mg/l |
| Fecal Coliform | 24000 | MPN/100ml |
| Fecal Streptococci | 94 | MPN/100ml |
| Nitrate-N | 0.32 | mg/l |
| pH | 6.77 | Unit |
| Temperature(Water) | 26 | ⁰C |
| Total Coliform | 50000 | MPN/100ml |
| Aldrin | BDL | ppb |
| Anilophos | BDL | ppb |
| b-Endosulphan | BDL | ppb |
| Chlorpyriphos | BDL | ppb |
| Dieldrin | BDL | ppb |
| g-BHC | BDL | ppb |
| Malathion | BDL | ppb |
| Methyl Parathion | BDL | ppb |