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: 29/11/2021 Sample Time: 10:50  
Human Activities: None Weather: Sunny and Clear. Water Body: TEESTA AT SILIGURI
Frequency Of Monitoring: Quarterly Use Based Class: C Approximate Depth(Bottom/Table): 1.00 m 
Color & Intensity: Clear Light Green Odour: Fishy Visible effluent discharge: None


Water Quality
Parameter Test Result Unit
  Ammonia-N   BDL   mg/l
  BOD   0.90   mg/l
  Conductivity   55.69   µs/cm
  Dissolved O2(DO)   8.60   mg/l
  Fecal Coliform   2100   MPN/100ml
  Fecal Streptococci   17   MPN/100ml
  Nitrate-N   0.08   mg/l
  pH   7.84   Unit
  Temperature(Water)   21   ⁰C
  Total Coliform   9000   MPN/100ml
  Boron   4.87   mg/l
  Calcium   10.42   mg/l
  Chloride   9.78   mg/l
  COD   8.00   mg/l
  Fluoride   0.15   mg/l
  Magnesium   2.30   mg/l
  Phenolpthalein Alkanity   NIL   mg/l
  Phosphate-P   0.002   mg/l
  Potassium   0.70   mg/l
  Sodium   1.20   mg/l
  Sulphate   6.35   mg/l
  Total Alkalinity   32.00   mg/l
  Total Dissolved Solids(TDS)   32.00   mg/l
  Total Fixed Solids(TFS)   60.00   mg/l
  Total Hardness as CaCo3   34.00   mg/l
  Total Suspended Solids(TSS)   17.00   mg/l
  Turbidity   4.20   NTU