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: 06/09/2019 Sample Time: 14:05 Hrs  
Human Activities: Bathing ,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: Fishy Visible effluent discharge: Moderate.


Water Quality
Parameter Test Result Unit
  pH   6.43   Unit
  Nitrate-N   0.94   mg/l
  Temperature   29   ⁰C
  Calcium   6.41   mg/l
  Chloride   10.76   mg/l
  COD   40.05   mg/l
  Fluoride   0.32   mg/l
  Magnesium   1.15   mg/l
  Phenolpthalein Alkanity   NIL   mg/l
  Potassium   2.8   mg/l
  Sodium   4.2   mg/l
  Total Alkalinity   52.00   mg/l
  Total Kjeldahl Nitrogen(TKN)      mg/l
  Ammonia-N   BDL   mg/l
  Phosphate-P   0.051   mg/l
  Total Suspended Solids(TSS)   68.00   mg/l
  Turbidity   10.20   NTU
  Boron   0.023   mg/l
  Total Dissolved Solids(TDS)   70.00   mg/l
  Total Fixed Solids(TFS)   126.00   mg/l
  Total Hardness as CaCo3   16.00   mg/l
  BOD   2.80   mg/l
  Conductivity   110.0   µs/cm
  Dissolved O2(DO)   7.30   mg/l
  Fecal Coliform   3300   MPN/100ml
  Total Coliform   11000   MPN/100ml
  Sulphate   13.02   mg/l