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[Potential relationship between microbiological indicators of contamination and emergent pathogens].

Emerging pathogens are defined as organisms that have increased in number within the past two decades or threaten to increase in the near future. A succession of emerging waterborne pathogens have been identified over the last 20 years but their significance to the water industry can take some time to establish. This paper will discuss organisms of potential concern and their possible relationships with the traditional bacterial indicators of faecal contamination.