Indicator Organisms

  • George J. Banwart


Indicator organisms have been used since 1892, the year Schardinger tested water for what is now called Escherichia coli, instead of testing for Salmonella typhi. It is difficult to detect S. typhi in a water supply. The presence of E coli indicates that there might have been contamination from sewage and that Salmonella or other intestinal pathogens might be present.


Fecal Coliform Total Coliform Fecal Contamination Enteric Pathogen Indicator Organism 
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© Van Nostrand Reinhold 1989

Authors and Affiliations

  • George J. Banwart
    • 1
  1. 1.Department of MicrobiologyThe Ohio State UniversityUSA

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