West Bengal Pollution Control Board

Siliguri Laboratory

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



Station: SINCHAL LAKE FOR DARJEELING River Basin: Tista CPCB Station Code: 2522
Sample Date: 29/09/2021 Sample Time: 13:50  
Human Activities: None Weather: Cloudy,Foggy and Rainy. Water Body: Sinchal lake
Frequency Of Monitoring: Quarterly Use Based Class: C Approximate Depth(Bottom/Table): 2.00 m 
Color & Intensity: Light Green and clear Odour: Odour Free Visible effluent discharge: None


Water Quality
Parameter Test Result Unit
  BOD   0.60   mg/l
  Dissolved O2(DO)   7.10   mg/l
  Fecal Coliform   80   MPN/100ml
  Nitrate-N   0.01   mg/l
  pH   7.05   Unit
  Temperature(Water)   16   ⁰C
  Total Coliform   170   MPN/100ml
  Boron   1.55   mg/l
  Calcium   3.20   mg/l
  Chloride   0.98   mg/l
  COD   6.00   mg/l
  Fluoride   BDL   mg/l
  Magnesium   1.73   mg/l
  Phosphate-P   0.001   mg/l
  Potassium   BDL   mg/l
  Sodium   0.10   mg/l
  Sulphate   1.93   mg/l
  Total Alkalinity   16.00   mg/l
  Total Dissolved Solids(TDS)   8.00   mg/l
  Total Fixed Solids(TFS)   40.00   mg/l
  Total Hardness as CaCo3   14.00   mg/l
  Total Suspended Solids(TSS)   4.00   mg/l
  Turbidity   195.00   NTU
  Ammonia-N   BDL   mg/l
  Conductivity   13.67   µs/cm
  Phenolpthalein Alkanity   NIL   mg/l