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: 26/02/2020 | Sample Time: 16:30 hrs | |
Human Activities: None | 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: Dark Green and Highly Turbid | Odour: Nauseating | Visible effluent discharge: Moderate |
Water Quality | ||
---|---|---|
Parameter | Test Result | Unit |
Dissolved O2(DO) | 5.40 | mg/l |
Fecal Coliform | 900 | MPN/100ml |
Ammonia-N | 0.98 | mg/l |
Nitrate-N | 0.81 | mg/l |
pH | 7.54 | Unit |
BOD | 2.80 | mg/l |
Temperature | 10 | ⁰C |
Total Coliform | 2200 | MPN/100ml |
Boron | 7.29 | mg/l |
Calcium | 10.42 | mg/l |
Chloride | 22.50 | mg/l |
Conductivity | 127.70 | µs/cm |
Magnesium | 5.18 | mg/l |
Phenolpthalein Alkanity | NIL | mg/l |
Phosphate-P | 0.002 | mg/l |
Potassium | BDL | mg/l |
Sodium | 2.70 | mg/l |
Sulphate | 3.15 | mg/l |
Total Alkalinity | 50.00 | mg/l |
Total Dissolved Solids(TDS) | 174.00 | mg/l |
Total Fixed Solids(TFS) | 136.00 | mg/l |
Total Hardness as CaCo3 | 44.00 | mg/l |
Total Suspended Solids(TSS) | 62.00 | mg/l |
Turbidity | 39.10 | NTU |
COD | 34.00 | mg/l |
Fluoride | BDL | mg/l |