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: 08/10/2020 Sample Time: 15:30  
Human Activities: None Weather: Cloudy. 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: Odour Free Visible effluent discharge: None


Water Quality
Parameter Test Result Unit
  Temperature(Water)   11   ⁰C
  Total Coliform   170   MPN/100ml
  Boron   0.24   mg/l
  Calcium   8.82   mg/l
  Chloride   8.81   mg/l
  COD   8.00   mg/l
  Fluoride   BDL   mg/l
  Magnesium   4.03   mg/l
  Phenolpthalein Alkanity   NIL   mg/l
  Phosphate-P   0.011   mg/l
  Potassium   BDL   mg/l
  Sodium   BDL   mg/l
  Sulphate   16.42   mg/l
  Total Alkalinity   30.00   mg/l
  Total Dissolved Solids(TDS)   10.00   mg/l
  Ammonia-N   BDL   mg/l
  BOD   1.20   mg/l
  Conductivity   14.12   µs/cm
  Dissolved O2(DO)   7.40   mg/l
  Fecal Coliform   70   MPN/100ml
  Nitrate-N   0.38   mg/l
  pH   7.25   Unit
  Total Hardness as CaCo3   36.00   mg/l
  Total Kjeldahl Nitrogen(TKN)      mg/l
  Total Fixed Solids(TFS)   26.00   mg/l
  Total Suspended Solids(TSS)   6.00   mg/l
  Turbidity   7.48   NTU