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: 09/12/2020 Sample Time: 15:15  
Human Activities: None Weather: Cloudy and foggy Water Body: Lake
Frequency Of Monitoring: Monthly Use Based Class: A Approximate Depth(Bottom/Table): 1.00 m 
Color & Intensity: Light Green Odour: Odour Free Visible effluent discharge: None


Water Quality
Parameter Test Result Unit
  Ammonia-N   0.17   mg/l
  BOD   1.20   mg/l
  Conductivity   62.93   µs/cm
  Dissolved O2(DO)   6.90   mg/l
  Nitrate-N   0.004   mg/l
  pH   7.40   Unit
  Temperature(Water)   8   ⁰C
  Fecal Coliform   70   MPN/100ml
  Total Coliform   120   MPN/100ml
  Boron   0.919   mg/l
  Calcium   19.23   mg/l
  Chloride   0.98   mg/l
  COD   22.00   mg/l
  Fluoride   BDL   mg/l
  Magnesium   4.60   mg/l
  Phosphate-P   0.001   mg/l
  Potassium   BDL   mg/l
  Sodium   BDL   mg/l
  Sulphate   9.86   mg/l
  Total Alkalinity   62.00   mg/l
  Total Dissolved Solids(TDS)   16.00   mg/l
  Total Fixed Solids(TFS)   28.00   mg/l
  Total Hardness as CaCo3   14.00   mg/l
  Total Kjeldahl Nitrogen(TKN)      mg/l
  Total Suspended Solids(TSS)   8.00   mg/l
  Phenolpthalein Alkanity   NIL   mg/l
  Turbidity   15.80   NTU