West Bengal Pollution Control Board |
Siliguri Laboratory |
Paribesh Bhawan, Paribahan Nagar, P.O. Matigara, Siliguri,Darjeeling 734 428. |
| Station: MIRIKH LAKE | River Basin: Tista | CPCB Station Code: 2520 |
| Sample Date: 12/04/2019 | Sample Time: 15:00 | |
| Human Activities: Bathing, Washing. | Weather: Clear and Sunny | Water Body: Mirikh lake |
| Frequency Of Monitoring: Quarterly | Use Based Class: C | Approximate Depth(Bottom/Table): 1.00 m |
| Color & Intensity: Highly Turbid Green | Odour: Nauseating | Visible effluent discharge: Moderate |
| Water Quality | ||
|---|---|---|
| Parameter | Test Result | Unit |
| Ammonia-N | BDL | mg/l |
| Nitrate-N | 2.60 | mg/l |
| pH | 6.80 | Unit |
| Temperature | 12 | ⁰C |
| Phosphate-P | 0.006 | mg/l |
| Sodium | 7.90 | mg/l |
| Total Alkalinity | 26.00 | mg/l |
| Total Dissolved Solids(TDS) | 82.00 | mg/l |
| Total Fixed Solids(TFS) | 92.0 | mg/l |
| Total Hardness as CaCo3 | 116.00 | mg/l |
| Total Kjeldahl Nitrogen(TKN) | mg/l | |
| Total Suspended Solids(TSS) | 66.00 | mg/l |
| Turbidity | 12.4 | NTU |
| Arsenic | BDL | µg/l |
| Cadmium | BDL | µg/l |
| Chromium Total | BDL | µg/l |
| Copper | BDL | µg/l |
| Iron | BDL | mg/l |
| Boron | 0.005 | mg/l |
| Calcium | 18.44 | mg/l |
| Chloride | 18.59 | mg/l |
| COD | 42.00 | mg/l |
| Fluoride | BDL | mg/l |
| Magnesium | 20.16 | mg/l |
| Phenolpthalein Alkanity | NIL | mg/l |
| Potassium | 3.60 | mg/l |
| BOD | 3.10 | mg/l |
| Conductivity | 148.11 | µs/cm |
| Dissolved O2(DO) | 6.80 | mg/l |
| Fecal Coliform | 5000 | MPN/100ml |
| Carbamat | ppb | |
| Chlorpyriphos | NT | ppb |
| Lead | BDL | µg/l |
| Mercury | BDL | µg/l |
| Nickel | BDL | µg/l |
| Zinc | BDL | µg/l |
| a-BHC | BDL | ppb |
| a-Endosulphan | NT | ppb |
| Aldrin | BDL | ppb |
| Dieldrin | NT | ppb |
| Malathion | BDL | ppb |
| Methyl Parathion | NT | ppb |
| o,p-DDT | NT | ppb |
| p,p-DDT | BDL | ppb |
| Anilophos | BDL | ppb |
| b-Endosulphan | NT | ppb |
| Sulphate | 4.79 | mg/l |
| Total Coliform | 14000 | MPN/100ml |
| g-BHC | NT | ppb |