West Bengal Pollution Control Board

Siliguri Laboratory

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



Station: Lake Rasikbheel at Coochbehar River Basin: GANGA CPCB Station Code: 4720
Sample Date: 18/12/2019 Sample Time: 14:15 Hrs  
Human Activities: None Weather: Sunny and Clear. Water Body: Lake
Frequency Of Monitoring: Monthly Use Based Class: B Approximate Depth(Bottom/Table): 1.00 m 
Color & Intensity: Moderately Green and Clear. Odour: Fishy. Visible effluent discharge: None.


Water Quality
Parameter Test Result Unit
  Ammonia-N   0.23   mg/l
  Conductivity   84.81   µs/cm
  Dissolved O2(DO)   6.80   mg/l
  Nitrate-N   1.43   mg/l
  BOD   2.40   mg/l
  Total Coliform   2200   MPN/100ml
  Boron   0.005   mg/l
  Sodium   2.80   mg/l
  Sulphate   1.56   mg/l
  Total Alkalinity   98.00   mg/l
  Fecal Coliform   340   MPN/100ml
  pH   7.10   Unit
  Total Dissolved Solids(TDS)   56.00   mg/l
  Temperature   20   ⁰C
  Calcium   12.83   mg/l
  Chloride   10.76   mg/l
  COD   19.00   mg/l
  Fluoride   BDL   mg/l
  Magnesium   7.49   mg/l
  Phenolpthalein Alkanity   NIL   mg/l
  Phosphate-P   0.004   mg/l
  Potassium   2.50   mg/l
  Total Fixed Solids(TFS)   12.00   mg/l
  Total Hardness as CaCo3   58.0   mg/l
  Total Suspended Solids(TSS)   34.00   mg/l
  Turbidity   2.03   NTU