West Bengal Pollution Control Board

Siliguri Laboratory

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



Station: River Balason at Khaprail More River Basin: Mahananda CPCB Station Code: 4722
Sample Date: 24/12/2019 Sample Time: 11:10 Hrs  
Human Activities: Sand recovery Weather: Sunny and Clear. Water Body: Balason
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
  Fluoride   BDL   mg/l
  Magnesium   2.30   mg/l
  Nitrate-N   0.71   mg/l
  pH   6.78   Unit
  Boron   0.019   mg/l
  Calcium   9.62   mg/l
  Chloride   8.81   mg/l
  Phenolpthalein Alkanity   NIL   mg/l
  Phosphate-P   0.008   mg/l
  Fecal Coliform   3300   MPN/100ml
  COD   34.00   mg/l
  Temperature   20   ⁰C
  Total Coliform   11000   MPN/100ml
  Potassium   2.20   mg/l
  Sodium   2.30   mg/l
  Ammonia-N   BDL   mg/l
  BOD   1.20   mg/l
  Conductivity   40.12   µs/cm
  Dissolved O2(DO)   7.10   mg/l
  Total Hardness as CaCo3   32.00   mg/l
  Total Alkalinity   64.00   mg/l
  Total Suspended Solids(TSS)   38.00   mg/l
  Sulphate   4.68   mg/l
  Total Dissolved Solids(TDS)   52.00   mg/l
  Turbidity   25.90   NTU
  Total Fixed Solids(TFS)   112.00   mg/l