West Bengal Pollution Control Board

Siliguri Laboratory

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



Station: River Mechi at Nehaljote River Basin: Mahananda CPCB Station Code: 4727
Sample Date: 09/01/2020 Sample Time: 13:20  
Human Activities: Construction of Bridge. Weather: Sunny and Clear Water Body: Mechi
Frequency Of Monitoring: Monthly Use Based Class: B Approximate Depth(Bottom/Table): 1.00 m 
Color & Intensity: Light Green and Clear. Odour: Odour free Visible effluent discharge: None


Water Quality
Parameter Test Result Unit
  Total Hardness as CaCo3   32.0   mg/l
  Total Suspended Solids(TSS)   28.00   mg/l
  Total Alkalinity   36.0   mg/l
  Fluoride   0.18   mg/l
  Boron   4.49   mg/l
  Conductivity   46.24   µs/cm
  Potassium   2.1   mg/l
  Temperature   13   ⁰C
  Total Coliform   7000   MPN/100ml
  Chloride   14.68   mg/l
  COD   39.00   mg/l
  Sulphate   7.50   mg/l
  Magnesium   4.03   mg/l
  Sodium   1.9   mg/l
  Phenolpthalein Alkanity   NIL   mg/l
  Calcium   7.21   mg/l
  Fecal Coliform   2200   MPN/100ml
  Nitrate-N   2.81   mg/l
  Phosphate-P   0.025   mg/l
  Total Dissolved Solids(TDS)   42.00   mg/l
  Total Fixed Solids(TFS)   28.00   mg/l
  Turbidity   2.22   NTU
  pH   6.50   Unit
  Ammonia-N   0.19   mg/l
  BOD   1.20   mg/l
  Dissolved O2(DO)   7.40   mg/l