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: 17/08/2020 Sample Time: 11:30 Hrs  
Human Activities: Bathing,Washing Weather: Cloudy Water Body: Balason
Frequency Of Monitoring: Monthly Use Based Class: B Approximate Depth(Bottom/Table): 1.00 m 
Color & Intensity: Dark Green and Slightly turbid Odour: Fishy Visible effluent discharge: Moderate


Water Quality
Parameter Test Result Unit
  pH   7.05   Unit
  Temperature(Water)   29   ⁰C
  Fluoride   0.42   mg/l
  Conductivity   79.00   µs/cm
  Phenolpthalein Alkanity   NIL   mg/l
  Phosphate-P   0.035   mg/l
  Potassium   5.80   mg/l
  Sulphate   4.84   mg/l
  Total Alkalinity   40.00   mg/l
  Total Dissolved Solids(TDS)   32.0   mg/l
  Total Fixed Solids(TFS)   172.00   mg/l
  Total Hardness as CaCo3   34.00   mg/l
  Total Suspended Solids(TSS)   60.00   mg/l
  Turbidity   66.00   NTU
  Dissolved O2(DO)   7.20   mg/l
  Fecal Coliform   2200   MPN/100ml
  Ammonia-N   0.27   mg/l
  BOD   1.40   mg/l
  Sodium   5.80   mg/l
  Total Coliform   9000   MPN/100ml
  Boron   7.54   mg/l
  Calcium   3.21   mg/l
  Chloride   7.82   mg/l
  COD   26.00   mg/l
  Nitrate-N   1.43   mg/l
  Magnesium   7.49   mg/l