West Bengal Pollution Control Board

Siliguri Laboratory

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



Station: TEESTA AT SEVOKE River Basin: Tista CPCB Station Code: 1947
Sample Date: 28/09/2020 Sample Time: 14:15 Hrs  
Human Activities: Fishing, Weather: Sunny and Humid Water Body: TEESTA AT SILIGURI
Frequency Of Monitoring: Quarterly Use Based Class: C Approximate Depth(Bottom/Table): 1.00 m 
Color & Intensity: Moderately Brown and Slightly Turbid Odour: Fishy Visible effluent discharge: None.


Water Quality
Parameter Test Result Unit
  Conductivity   59.20   µs/cm
  Dissolved O2(DO)   8.40   mg/l
  Fecal Coliform   3300   MPN/100ml
  Potassium   BDL   mg/l
  Sodium   1.00   mg/l
  Sulphate   13.05   mg/l
  Total Alkalinity   48.00   mg/l
  Total Dissolved Solids(TDS)   98.00   mg/l
  Nitrate-N   0.76   mg/l
  pH   7.46   Unit
  Calcium   10.02   mg/l
  Chloride   0.98   mg/l
  COD   20.00   mg/l
  Fluoride   0.11   mg/l
  Total Fixed Solids(TFS)   66.00   mg/l
  Total Hardness as CaCo3   40.00   mg/l
  Total Suspended Solids(TSS)   101.00   mg/l
  Turbidity   20.50   NTU
  BOD   2.60   mg/l
  Ammonia-N   0.13   mg/l
  Boron   3.48   mg/l
  Temperature(Water)   27   ⁰C
  Total Coliform   11000   MPN/100ml
  Magnesium   4.04   mg/l
  Phenolpthalein Alkanity   NIL   mg/l
  Phosphate-P   0.014   mg/l