West Bengal Pollution Control Board

Siliguri Laboratory

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



Station: KOCHBIHAR LAKE (SAGAR DIGHI) River Basin: Raidak_Torsa CPCB Station Code: 2519
Sample Date: 10/05/2019 Sample Time: 15:45 Hrs  
Human Activities: Washing,Bathing . Weather: Hot ,Humid and Cloudy Water Body: Coochbihar lake
Frequency Of Monitoring: Quarterly Use Based Class: C Approximate Depth(Bottom/Table): 1.00 m 
Color & Intensity: Dark Green Odour: fishy Visible effluent discharge: none


Water Quality
Parameter Test Result Unit
  Sodium   1.00   mg/l
  Sulphate   3.47   mg/l
  Total Alkalinity   38.00   mg/l
  Total Dissolved Solids(TDS)   82.00   mg/l
  Total Fixed Solids(TFS)   8.0   mg/l
  Total Hardness as CaCo3   26.0   mg/l
  Total Kjeldahl Nitrogen(TKN)      mg/l
  Total Suspended Solids(TSS)   58.00   mg/l
  Turbidity   8.04   NTU
  Ammonia-N   0.29   mg/l
  BOD   2.60   mg/l
  Conductivity   76.26   µs/cm
  Dissolved O2(DO)   8.70   mg/l
  Fecal Coliform   2200   MPN/100ml
  Nitrate-N   0.10   mg/l
  pH   7.45   Unit
  Temperature   28   ⁰C
  Total Coliform   9000   MPN/100ml
  Boron   0.007   mg/l
  Calcium   8.01   mg/l
  Chloride   6.85   mg/l
  COD   45.00   mg/l
  Fluoride   0.12   mg/l
  Magnesium   1.73   mg/l
  Phenolpthalein Alkanity   NIL   mg/l
  Phosphate-P   0.005   mg/l
  Potassium   BDL   mg/l