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  1. Pathogenic or potentially pathogenic bacteria as contaminants of fresh water from different sources in Araraquara, Brazil.

    Article - En anglais

    The microbiological quality of various fresh waters in the Araraquara region, state of Sao Paulo, Brazil was investigated.

    Ninety-nine water samples were taken from rivers, reservoirs, artesian and non-artesian wells, springs and tap waters, and these waters were analysed using:

    • plate counts of heterotrophic microorganisms (per 1 ml);

    • Most Probable Number (MPN) of fecal coliforms and E. coli (per 100 ml);

    • tests for presence of Salmonella,

    • Shigella,

    • Yersinia, the E. coli pathogens of classes EPEC,

    • ETEC and EIEC and Mycobacterium.

    Shigella, Yersinia and enteroinvasive E. coli (EIEC) were not isolated.

    The other types of microorganisms were isolated in varying proportions.

    We conclude that the waters investigated represent a potential microbiological health risk.

    Mots-clés Pascal : Pollution eau, Qualité eau, Eau douce, Microorganisme, Feces, Coliforme, Brésil, Amérique du Sud, Amérique

    Mots-clés Pascal anglais : Water pollution, Water quality, Fresh water, Microorganism, Feces, Coliforms, Brazil, South America, America

    Logo du centre Notice produite par :
    Inist-CNRS - Institut de l'Information Scientifique et Technique

    Cote : 93-0632754

    Code Inist : 001D16A04C. Création : 199406.