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: 25/01/2022 Sample Time: 13:35  
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: Dark Green and moderately turbid Odour: Fishy Visible effluent discharge: None


Water Quality
Parameter Test Result Unit
  Ammonia-N   0.21   mg/l
  BOD   1.80   mg/l
  Conductivity   91.38   µs/cm
  Dissolved O2(DO)   7.80   mg/l
  Fecal Coliform   1400   MPN/100ml
  Nitrate-N   0.11   mg/l
  pH   7.05   Unit
  Temperature(Water)   18   ⁰C
  Total Coliform   3300   MPN/100ml
  Boron   1.40   mg/l
  Calcium   13.62   mg/l
  Chloride   7.83   mg/l
  COD   40.00   mg/l
  Fluoride   0.14   mg/l
  Magnesium   16.12   mg/l
  Phenolpthalein Alkanity   NIL   mg/l
  Phosphate-P   0.87   mg/l
  Potassium   0.60   mg/l
  Sodium   1.90   mg/l
  Sulphate   0.83   mg/l
  Total Alkalinity   60.00   mg/l
  Total Dissolved Solids(TDS)   54.00   mg/l
  Total Fixed Solids(TFS)   20.00   mg/l
  Total Hardness as CaCo3   90.00   mg/l
  Total Suspended Solids(TSS)   34.00   mg/l
  Turbidity   8.43   NTU