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: 26/10/2021 Sample Time: 13:00  
Human Activities: None Weather: Sunny Water Body: Teesta
Frequency Of Monitoring: Monthly Use Based Class: B Approximate Depth(Bottom/Table): 1.00 m 
Color & Intensity: Green and light turbid Odour: Fishy Visible effluent discharge: None


Water Quality
Parameter Test Result Unit
  Ammonia-N   0.14   mg/l
  BOD   1.20   mg/l
  Conductivity   86.15   µs/cm
  Dissolved O2(DO)   6.80   mg/l
  Fecal Coliform   2200   MPN/100ml
  Fecal Streptococci   9   MPN/100ml
  Nitrate-N   0.10   mg/l
  pH   6.90   Unit
  Temperature(Water)   27   ⁰C
  Total Coliform   8000   MPN/100ml
  Boron   0.49   mg/l
  Calcium   8.81   mg/l
  Chloride   3.91   mg/l
  COD   12.00   mg/l
  Fluoride   0.12   mg/l
  Magnesium   2.30   mg/l
  Phenolpthalein Alkanity   NIL   mg/l
  Phosphate-P   0.012   mg/l
  Potassium   0.90   mg/l
  Sodium   3.30   mg/l
  Sulphate   6.36   mg/l
  Total Alkalinity   50.00   mg/l
  Total Dissolved Solids(TDS)   18.00   mg/l
  Total Fixed Solids(TFS)   178.00   mg/l
  Total Hardness as CaCo3   30.00   mg/l
  Total Suspended Solids(TSS)   20.00   mg/l
  Turbidity   54.60   NTU