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: 20/07/2020 Sample Time: 10:30  
Human Activities: Bathing and Washing Weather: Sunny and clear Water Body: Balason
Frequency Of Monitoring: Monthly Use Based Class: B Approximate Depth(Bottom/Table): 1.00 m 
Color & Intensity: Brown and Muddy Odour: Fishy Visible effluent discharge: None


Water Quality
Parameter Test Result Unit
  Potassium   1.80   mg/l
  Sodium   5.80   mg/l
  Sulphate   18.59   mg/l
  Total Alkalinity   34.00   mg/l
  Total Dissolved Solids(TDS)   92.00   mg/l
  Total Fixed Solids(TFS)   302.00   mg/l
  Total Hardness as CaCo3   24.00   mg/l
  Turbidity   11.80   NTU
  Ammonia-N   3.26   mg/l
  Calcium   4.81   mg/l
  Total Suspended Solids(TSS)   84.00   mg/l
  Conductivity   54.11   µs/cm
  Fecal Coliform   5000   MPN/100ml
  Nitrate-N   1.68   mg/l
  Temperature(Water)   28   ⁰C
  Total Coliform   14000   MPN/100ml
  Boron   2.52   mg/l
  Chloride   12.72   mg/l
  COD   28.00   mg/l
  Fluoride   0.47   mg/l
  Magnesium   3.45   mg/l
  BOD   2.10   mg/l
  pH   7.80   Unit
  Phosphate-P   0.136   mg/l
  Phenolpthalein Alkanity   NIL   mg/l
  Dissolved O2(DO)   7.20   mg/l