West Bengal Pollution Control Board

Siliguri Laboratory

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



Station: KAROLA, D/S OF JALPAIGURI, NEAR MIN BHAWAN River Basin: Tista CPCB Station Code: 2523
Sample Date: 08/01/2021 Sample Time: 16:10 Hrs  
Human Activities: Bathing and Washing. Weather: Sunny and Clear Water Body: Karala at jalpaiguri
Frequency Of Monitoring: Quarterly Use Based Class: C Approximate Depth(Bottom/Table): 1.00 m 
Color & Intensity: Moderately Green and clear Odour: Odourless Visible effluent discharge: None


Water Quality
Parameter Test Result Unit
  Calcium   8.01   mg/l
  pH   7.20   Unit
  Total Dissolved Solids(TDS)   52.00   mg/l
  Ammonia-N   0.20   mg/l
  Nitrate-N   0.011   mg/l
  Temperature(Water)   25   ⁰C
  Total Coliform   9000   MPN/100ml
  Boron   0.024   mg/l
  Chloride   1.95   mg/l
  COD   32.00   mg/l
  Fluoride   0.19   mg/l
  Magnesium   6.33   mg/l
  Phenolpthalein Alkanity   NIL   mg/l
  Phosphate-P   0.008   mg/l
  Potassium   1.90   mg/l
  Sodium   3.20   mg/l
  Sulphate   11.14   mg/l
  Total Alkalinity   34.00   mg/l
  Fecal Coliform   2300   MPN/100ml
  Fecal Streptococci   39   MPN/100ml
  BOD   2.20   mg/l
  Conductivity   76.63   µs/cm
  Dissolved O2(DO)   7.9   mg/l
  Total Fixed Solids(TFS)   128.00   mg/l
  Total Hardness as CaCo3   42.00   mg/l
  Total Suspended Solids(TSS)   30.0   mg/l
  Turbidity   17.90   NTU