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: 30/12/2019 Sample Time: 13:10 Hrs  
Human Activities: None Weather: Cloudy Water Body: Sinchal lake
Frequency Of Monitoring: Quarterly Use Based Class: C Approximate Depth(Bottom/Table): 1.00 m 
Color & Intensity: Light Green and Clear Odour: None Visible effluent discharge: None


Water Quality
Parameter Test Result Unit
  pH   7.20   Unit
  Temperature   4   ⁰C
  Total Coliform   140   MPN/100ml
  Boron   0.002   mg/l
  Calcium   4.81   mg/l
  Dissolved O2(DO)   7.40   mg/l
  Fecal Coliform   80   MPN/100ml
  Ammonia-N   0.29   mg/l
  Conductivity   14.94   µs/cm
  BOD   1.20   mg/l
  Nitrate-N   2.25   mg/l
  Chloride   6.85   mg/l
  Phenolpthalein Alkanity   NIL   mg/l
  Magnesium   1.15   mg/l
  Phosphate-P   0.010   mg/l
  Potassium   0.20   mg/l
  Sodium   BDL   mg/l
  Sulphate   2.34   mg/l
  Total Alkalinity   28.00   mg/l
  Total Dissolved Solids(TDS)   18.00   mg/l
  Total Hardness as CaCo3   16.00   mg/l
  Total Suspended Solids(TSS)   12.00   mg/l
  Turbidity   1.15   NTU
  COD   19.00   mg/l
  Fluoride   BDL   mg/l
  Total Fixed Solids(TFS)   34.00   mg/l