West Bengal Pollution Control Board

Central Laboratory

Paribesh Bhawan, 10A, Block LA, Sector III, Salt Lake City, Kolkata 700 106. (033) 2335-5953



Station: RABINDRASAROVAR NATIONAL LAKE, CALCUTTA, WEST BENGAL River Basin: GANGA CPCB Station Code: 1765
Sample Date: 09/07/2020 Sample Time: 11:40  
Human Activities: Nil Weather: Sunny clear Water Body: Rabindra Sarabar
Frequency Of Monitoring: Quarterly Use Based Class: C Approximate Depth(Bottom/Table): 1.50 m 
Color & Intensity: Light green Odour: Odour free Visible effluent discharge: None


Water Quality
Parameter Test Result Unit
  COD   18.00   mg/l
  Phenolpthalein Alkanity   NIL   mg/l
  Phosphate-P   0.10   mg/l
  Total Alkalinity   96.00   mg/l
  Nitrate-N   1.21   mg/l
  Sodium   28.44   mg/l
  Dissolved O2(DO)   10.00   mg/l
  Fecal Coliform   800   MPN/100ml
  pH   7.95   Unit
  Total Coliform   1400   MPN/100ml
  Boron   BDL   mg/l
  Calcium   19.23   mg/l
  Total Fixed Solids(TFS)   92.00   mg/l
  Potassium   4.02   mg/l
  Total Kjeldahl Nitrogen(TKN)      mg/l
  Turbidity   7.24   NTU
  Ammonia-N   0.23   mg/l
  BOD   5.50   mg/l
  Conductivity   313.00   µs/cm
  Fluoride   0.29   mg/l
  Magnesium   7.01   mg/l
  Chloride   41.98   mg/l
  Temperature(Water)   32.0   ⁰C
  Total Hardness as CaCo3   76.92   mg/l
  Total Dissolved Solids(TDS)   176.00   mg/l
  Sulphate   23.15   mg/l
  Total Suspended Solids(TSS)   12.00   mg/l