West Bengal Pollution Control Board

Siliguri Laboratory

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



Station: MAHANANDA D/S, RAMGHAT River Basin: Mahananda CPCB Station Code: 2525
Sample Date: 13/08/2019 Sample Time: 12:45  
Human Activities: Fishing. Weather: Sunny and Clear Water Body: Ramghat on Mahananda
Frequency Of Monitoring: Quarterly Use Based Class: C Approximate Depth(Bottom/Table): 1.00 m 
Color & Intensity: Dark Green and Muddy Odour: Nauseating Visible effluent discharge: High


Water Quality
Parameter Test Result Unit
  pH   6.54   Unit
  BOD   28.00   mg/l
  Ammonia-N   0.20   mg/l
  Conductivity   138.20   µs/cm
  Dissolved O2(DO)   5.90   mg/l
  Fecal Coliform   170000   MPN/100ml
  Nitrate-N   1.22   mg/l
  Temperature   29   ⁰C
  Total Coliform   280000   MPN/100ml
  Boron   0.054   mg/l
  Calcium   21.60   mg/l
  Chloride   36.20   mg/l
  COD   105.63   mg/l
  Fluoride   0.32   mg/l
  Magnesium   4.61   mg/l
  Phenolpthalein Alkanity   NIL   mg/l
  Phosphate-P   0.058   mg/l
  Potassium   7.20   mg/l
  Sodium   198.00   mg/l
  Sulphate   29.43   mg/l
  Total Alkalinity   70.0   mg/l
  Total Dissolved Solids(TDS)   381.0   mg/l
  Total Fixed Solids(TFS)   380.00   mg/l
  Total Hardness as CaCo3   70.0   mg/l
  Total Kjeldahl Nitrogen(TKN)      mg/l
  Total Suspended Solids(TSS)   210.0   mg/l
  Turbidity   268.00   NTU