West Bengal Pollution Control Board

Siliguri Laboratory

Paribesh Bhawan, Paribahan Nagar, P.O. Matigara, Siliguri,Darjeeling 734 428.



Station: Jorepokhari lake at Sukhiapokhari River Basin: GANGA CPCB Station Code: 4729
Sample Date: 27/05/2022 Sample Time: 14:10  
Human Activities: None Weather: Rainy. Water Body: Lake
Frequency Of Monitoring: Monthly Use Based Class: A 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
  Ammonia-N   0.20   mg/l
  BOD   0.90   mg/l
  Conductivity   62.48   µs/cm
  Dissolved O2(DO)   7.30   mg/l
  Fecal Coliform   NIL   MPN/100ml
  Nitrate-N   0.27   mg/l
  pH   7.70   Unit
  Temperature(Water)   13   ⁰C
  Total Coliform   NIL   MPN/100ml
  Boron   4.78   mg/l
  Calcium   11.20   mg/l
  Chloride   6.84   mg/l
  COD   13.80   mg/l
  Fluoride   0.20   mg/l
  Magnesium   0.48   mg/l
  Phenolpthalein Alkanity   NIL   mg/l
  Phosphate-P   0.002   mg/l
  Potassium   1.00   mg/l
  Sodium   2.20   mg/l
  Sulphate   4.92   mg/l
  Total Alkalinity   24.00   mg/l
  Total Dissolved Solids(TDS)   37.00   mg/l
  Total Fixed Solids(TFS)   22.00   mg/l
  Total Hardness as CaCo3   30.00   mg/l
  Total Suspended Solids(TSS)   2.00   mg/l
  Turbidity   2.22   NTU