West Bengal Pollution Control Board

Siliguri Laboratory

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



Station: River Teesta at Jalpesh River Basin: Tista CPCB Station Code: 4723
Sample Date: 23/06/2021 Sample Time: 11:30  
Human Activities: None Weather: Sunny and humid Water Body: Teesta
Frequency Of Monitoring: Monthly Use Based Class: B Approximate Depth(Bottom/Table): 1.00 m 
Color & Intensity: Moderately green and turbid Odour: Fishy Visible effluent discharge: None


Water Quality
Parameter Test Result Unit
  Ammonia-N   0.11   mg/l
  BOD   1.40   mg/l
  Conductivity   73.45   µs/cm
  Dissolved O2(DO)   7.80   mg/l
  Fecal Coliform   2100   MPN/100ml
  Fecal Streptococci   15   MPN/100ml
  Nitrate-N   0.38   mg/l
  pH   7.89   Unit
  Temperature(Water)   22   ⁰C
  Total Coliform   9000   MPN/100ml
  Boron   0.70   mg/l
  Calcium   8.82   mg/l
  Chloride   11.74   mg/l
  COD   30.00   mg/l
  Fluoride   0.13   mg/l
  Magnesium   4.03   mg/l
  Phenolpthalein Alkanity   NIL   mg/l
  Phosphate-P   0.003   mg/l
  Potassium   1.0   mg/l
  Sodium   0.8   mg/l
  Sulphate   9.26   mg/l
  Total Alkalinity   36.0   mg/l
  Total Dissolved Solids(TDS)   58.00   mg/l
  Total Fixed Solids(TFS)   38.00   mg/l
  Total Hardness as CaCo3   36.00   mg/l
  Total Suspended Solids(TSS)   16.0   mg/l
  Turbidity   145.00   NTU