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: 20/09/2021 Sample Time: 13:22  
Human Activities: Bathing and Washing and Fishing. Weather: Sunny and Clear. Water Body: Teesta
Frequency Of Monitoring: Monthly Use Based Class: B Approximate Depth(Bottom/Table): 1.50 m 
Color & Intensity: Light Brown and moderately turbid Odour: Fishy Visible effluent discharge: None


Water Quality
Parameter Test Result Unit
  Ammonia-N   0.18   mg/l
  BOD   2.00   mg/l
  Conductivity   47.07   µs/cm
  Dissolved O2(DO)   7.90   mg/l
  Fecal Coliform   1700   MPN/100ml
  Fecal Streptococci   12   MPN/100ml
  Nitrate-N   0.09   mg/l
  pH   6.65   Unit
  Temperature(Water)   27   ⁰C
  Total Coliform   7000   MPN/100ml
  Boron   1.32   mg/l
  Calcium   7.21   mg/l
  Chloride   4.89   mg/l
  COD   14.00   mg/l
  Fluoride   0.17   mg/l
  Magnesium   5.18   mg/l
  Phenolpthalein Alkanity   NIL   mg/l
  Phosphate-P   0.001   mg/l
  Potassium   0.20   mg/l
  Sodium   0.70   mg/l
  Sulphate   5.36   mg/l
  Total Alkalinity   22.00   mg/l
  Total Dissolved Solids(TDS)   20.00   mg/l
  Total Fixed Solids(TFS)   60.00   mg/l
  Total Hardness as CaCo3   36.00   mg/l
  Total Suspended Solids(TSS)   71.00   mg/l
  Turbidity   28.50   NTU