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: 26/02/2020 Sample Time: 15:15 Hrs  
Human Activities: None Weather: Sunny and Clear Water Body: Lake
Frequency Of Monitoring: Monthly Use Based Class: A Approximate Depth(Bottom/Table): 1.00 m 
Color & Intensity: Light Green and Slightly Turbid Odour: None Visible effluent discharge: None


Water Quality
Parameter Test Result Unit
  Fecal Coliform   120   MPN/100ml
  Nitrate-N   0.99   mg/l
  pH   7.98   Unit
  Total Coliform   260   MPN/100ml
  Boron   11.13   mg/l
  Calcium   28.85   mg/l
  COD   10.0   mg/l
  Fluoride   BDL   mg/l
  Magnesium   1.72   mg/l
  Phenolpthalein Alkanity   NIL   mg/l
  Potassium   0.80   mg/l
  Sulphate   2.68   mg/l
  Total Alkalinity   76.00   mg/l
  Total Dissolved Solids(TDS)   240.00   mg/l
  Total Hardness as CaCo3   78.00   mg/l
  Total Kjeldahl Nitrogen(TKN)      mg/l
  Total Suspended Solids(TSS)   24.00   mg/l
  Turbidity   8.56   NTU
  BOD   1.30   mg/l
  Dissolved O2(DO)   7.20   mg/l
  Conductivity   135.00   µs/cm
  Sodium   3.20   mg/l
  Temperature   5   ⁰C
  Chloride   2.93   mg/l
  Phosphate-P   BDL   mg/l
  Total Fixed Solids(TFS)   126.00   mg/l
  Ammonia-N   0.37   mg/l