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30 juillet 1999 Paru dans N°223 - à la page 34

Drinking water must be free of pathogenic microorganisms. While the presence of indicator germs implies contamination, we now know that their absence is in no way proof of acceptable quality. This conundrum cannot be resolved without paying close attention to each stage of production. This is particularly important given the fact that some microorganisms responsible for water borne infections are highly resistant to disinfection treatment.