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: 13/06/2022 Sample Time: 09:00  
Human Activities: None Weather: Cloudy 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 turbid Odour: Fishy Visible effluent discharge: None


Water Quality
Parameter Test Result Unit
  Ammonia-N   BDL   mg/l
  BOD   1.40   mg/l
  Conductivity   51.38   µs/cm
  Dissolved O2(DO)   7.10   mg/l
  Fecal Coliform   2600   MPN/100ml
  Fecal Streptococci   41   MPN/100ml
  Nitrate-N   0.41   mg/l
  pH   6.99   Unit
  Temperature(Water)   16   ⁰C
  Total Coliform   30000   MPN/100ml
  Boron   3.26   mg/l
  Calcium   5.60   mg/l
  Chloride   1.95   mg/l
  COD   11.00   mg/l
  Fluoride   BDL   mg/l
  Magnesium   1.45   mg/l
  Phenolpthalein Alkanity   NIL   mg/l
  Phosphate-P   0.008   mg/l
  Potassium   2.2   mg/l
  Sodium   4.0   mg/l
  Sulphate   9.99   mg/l
  Total Alkalinity   26.00   mg/l
  Total Dissolved Solids(TDS)   31.00   mg/l
  Total Fixed Solids(TFS)   222.00   mg/l
  Total Hardness as CaCo3   20.00   mg/l
  Total Suspended Solids(TSS)   286.00   mg/l
  Turbidity   62.70   NTU