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: 07/05/2019 Sample Time: 10:30 Hrs  
Human Activities: Sand extraction,construction work. Weather: Calm and sunny Water Body: TEESTA AT SILIGURI
Frequency Of Monitoring: Quarterly Use Based Class: C Approximate Depth(Bottom/Table): 1.00 m 
Color & Intensity: Light Brown Odour: Odour free Visible effluent discharge: none


Water Quality
Parameter Test Result Unit
  Dissolved O2(DO)   8.10   mg/l
  Nitrate-N   0.53   mg/l
  Fecal Coliform   3400   MPN/100ml
  Calcium   10.42   mg/l
  Chloride   7.83   mg/l
  COD   10.00   mg/l
  Fluoride   0.13   mg/l
  Magnesium   3.46   mg/l
  Phenolpthalein Alkanity   NIL   mg/l
  Phosphate-P   0.003   mg/l
  Potassium   0.60   mg/l
  Sodium   1.80   mg/l
  Sulphate   8.95   mg/l
  Total Alkalinity   44.00   mg/l
  Total Dissolved Solids(TDS)   70.00   mg/l
  Total Fixed Solids(TFS)   96.0   mg/l
  Total Hardness as CaCo3   38.00   mg/l
  Total Suspended Solids(TSS)   36.00   mg/l
  Turbidity   9.40   NTU
  Ammonia-N   BDL   mg/l
  BOD   3.80   mg/l
  Conductivity   97.54   µs/cm
  pH   7.58   Unit
  Temperature   27   ⁰C
  Total Coliform   17000   MPN/100ml
  Boron   0.003   mg/l