West Bengal Pollution Control Board |
Siliguri Laboratory |
Paribesh Bhawan, Paribahan Nagar, P.O. Matigara, Siliguri,Darjeeling 734 428. |
| Station: TEESTA AT SEVOKE | River Basin: Tista | CPCB Station Code: 1947 |
| Sample Date: 29/04/2022 | Sample Time: 09:15 Hrs | |
| Human Activities: None | Weather: sunny and clear | Water Body: TEESTA AT SILIGURI |
| Frequency Of Monitoring: Quarterly | Use Based Class: C | Approximate Depth(Bottom/Table): 1.00 m |
| Color & Intensity: Light green and Clear | Odour: None | Visible effluent discharge: None |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| BOD | 1.20 | mg/l |
| Conductivity | 57.76 | µs/cm |
| Dissolved O2(DO) | 7.40 | mg/l |
| Fecal Coliform | 6000 | MPN/100ml |
| Fecal Streptococci | 13 | MPN/100ml |
| Nitrate-N | 0.39 | mg/l |
| pH | 6.90 | Unit |
| Temperature(Water) | 21 | ⁰C |
| Total Coliform | 9000 | MPN/100ml |
| Boron | 4.56 | mg/l |
| Calcium | 7.20 | mg/l |
| Chloride | 1.95 | mg/l |
| COD | 13 | mg/l |
| Fluoride | 0.12 | mg/l |
| Magnesium | 2.43 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Arsenic | BDL | mg/l |
| Cadmium | BDL | mg/l |
| Chromium Total | BDL | mg/l |
| Copper | BDL | mg/l |
| Iron | 1.36 | mg/l |
| Lead | BDL | mg/l |
| Mercury | BDL | mg/l |
| Nickel | BDL | mg/l |
| Zinc | BDL | mg/l |
| a-BHC | BDL | ppb |
| a-Endosulphan | BDL | ppb |
| Aldrin | BDL | ppb |
| Anilophos | BDL | ppb |
| b-BHC | BDL | ppb |
| b-Endosulphan | BDL | ppb |
| Chlorpyriphos | BDL | ppb |
| Dieldrin | BDL | ppb |
| g-BHC | BDL | ppb |
| Malathion | BDL | ppb |
| Methyl Parathion | BDL | ppb |
| o,p-DDT | BDL | ppb |
| p,p-DDT | BDL | ppb |
| Phosphate-P | 0.009 | mg/l |
| Potassium | 2.50 | mg/l |
| Sodium | 3.20 | mg/l |
| Sulphate | 8.30 | mg/l |
| Total Dissolved Solids(TDS) | 36.00 | mg/l |
| Total Fixed Solids(TFS) | 152.00 | mg/l |
| Total Hardness as CaCo3 | 28.00 | mg/l |
| Total Suspended Solids(TSS) | 6.00 | mg/l |
| Turbidity | 83.20 | NTU |
| Ammonia-N | BDL | mg/l |
| Total Alkalinity | 26.00 | mg/l |