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: 06/05/2019 Sample Time: 14:30 Hrs  
Human Activities: Washing of clothes,Bathing,fishing. Weather: Calm and sunny Water Body: Karala at jalpaiguri
Frequency Of Monitoring: Quarterly Use Based Class: C Approximate Depth(Bottom/Table): 1.00 m 
Color & Intensity: Dark Green. Odour: Odour free Visible effluent discharge: moderate


Water Quality
Parameter Test Result Unit
  Sodium   4.60   mg/l
  Sulphate   5.47   mg/l
  Total Alkalinity   84.00   mg/l
  Total Dissolved Solids(TDS)   66.00   mg/l
  Fecal Coliform   2200   MPN/100ml
  Nitrate-N   0.29   mg/l
  pH   7.27   Unit
  Temperature   30   ⁰C
  Total Coliform   11000   MPN/100ml
  Boron   0.009   mg/l
  Calcium   11.22   mg/l
  Total Fixed Solids(TFS)   82.0   mg/l
  Total Hardness as CaCo3   44.00   mg/l
  Total Suspended Solids(TSS)   46.00   mg/l
  Turbidity   2.71   NTU
  Ammonia-N   BDL   mg/l
  BOD   1.80   mg/l
  Conductivity   118.60   µs/cm
  Dissolved O2(DO)   5.10   mg/l
  Chloride   7.83   mg/l
  COD   47.00   mg/l
  Fluoride   0.18   mg/l
  Magnesium   4.61   mg/l
  Phenolpthalein Alkanity   NIL   mg/l
  Phosphate-P   0.008   mg/l
  Potassium   2.20   mg/l