West Bengal Pollution Control Board

Siliguri Laboratory

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



Station: River Siltorsa at Hasimara River Basin: Tista CPCB Station Code: 4718
Sample Date: 25/11/2020 Sample Time: 12:30  
Human Activities: Bathing and Washing . Weather: Sunny and Hot. Water Body: Siltorsa
Frequency Of Monitoring: Monthly Use Based Class: B Approximate Depth(Bottom/Table): 1.00 m 
Color & Intensity: Light Green Odour: Fishy Visible effluent discharge: None


Water Quality
Parameter Test Result Unit
  Fluoride   0.12   mg/l
  Magnesium   11.52   mg/l
  Phenolpthalein Alkanity   NIL   mg/l
  Turbidity   1.94   NTU
  Phosphate-P   0.012   mg/l
  Potassium   0.80   mg/l
  pH   6.56   Unit
  Temperature(Water)   28   ⁰C
  Sodium   2.60   mg/l
  Sulphate   18.21   mg/l
  Total Alkalinity   52.00   mg/l
  Total Dissolved Solids(TDS)   62.00   mg/l
  Total Fixed Solids(TFS)   18.00   mg/l
  Ammonia-N   BDL   mg/l
  Fecal Streptococci   17   MPN/100ml
  Nitrate-N   0.021   mg/l
  Total Coliform   8000   MPN/100ml
  Boron   2.18   mg/l
  Calcium   16.84   mg/l
  Chloride   13.69   mg/l
  BOD   2.60   mg/l
  Conductivity   98.16   µs/cm
  Dissolved O2(DO)   7.10   mg/l
  Fecal Coliform   1100   MPN/100ml
  COD   48.00   mg/l
  Total Hardness as CaCo3   82.00   mg/l
  Total Suspended Solids(TSS)   32.00   mg/l