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: 30/12/2019 Sample Time: 11:40 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 Clear. Odour: None Visible effluent discharge: None.


Water Quality
Parameter Test Result Unit
  Nitrate-N   0.30   mg/l
  Ammonia-N   0.33   mg/l
  BOD   1.40   mg/l
  Conductivity   35.73   µs/cm
  Dissolved O2(DO)   7.20   mg/l
  Fecal Coliform   70   MPN/100ml
  pH   7.15   Unit
  Total Hardness as CaCo3   30.0   mg/l
  Total Kjeldahl Nitrogen(TKN)      mg/l
  Total Suspended Solids(TSS)   6.00   mg/l
  Turbidity   2.29   NTU
  Temperature   10   ⁰C
  Total Coliform   120   MPN/100ml
  COD   23.00   mg/l
  Boron   0.002   mg/l
  Calcium   8.82   mg/l
  Fluoride   BDL   mg/l
  Magnesium   2.30   mg/l
  Phenolpthalein Alkanity   NIL   mg/l
  Phosphate-P   0.003   mg/l
  Sodium   BDL   mg/l
  Sulphate   1.29   mg/l
  Total Alkalinity   24.00   mg/l
  Total Dissolved Solids(TDS)   22.00   mg/l
  Total Fixed Solids(TFS)   46.00   mg/l
  Chloride   11.74   mg/l
  Potassium   1.10   mg/l