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: 27/08/2021 Sample Time: 14:10  
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: Light Green and clear Odour: Fishy Visible effluent discharge: None


Water Quality
Parameter Test Result Unit
  Ammonia-N   BDL   mg/l
  BOD   1.60   mg/l
  Conductivity   38.40   µs/cm
  Dissolved O2(DO)   7.10   mg/l
  Fecal Coliform   2600   MPN/100ml
  Nitrate-N   0.19   mg/l
  pH   7.40   Unit
  Temperature(Water)   28   ⁰C
  Total Coliform   9000   MPN/100ml
  Boron   0.49   mg/l
  Calcium   3.20   mg/l
  Chloride   7.83   mg/l
  COD   8.00   mg/l
  Fluoride   BDL   mg/l
  Magnesium   5.18   mg/l
  Phenolpthalein Alkanity   NIL   mg/l
  Phosphate-P   0.002   mg/l
  Potassium   BDL   mg/l
  Sodium   1.7   mg/l
  Sulphate   4.65   mg/l
  Total Alkalinity   54.0   mg/l
  Total Dissolved Solids(TDS)   12.00   mg/l
  Total Fixed Solids(TFS)   22.00   mg/l
  Total Hardness as CaCo3   26.00   mg/l
  Total Suspended Solids(TSS)   6.0   mg/l
  Turbidity   3.01   NTU