Comparação da qualidade bacteriológica de água mineral, água de poços artesianos e água de abastecimento municipal : potencial patogênico de pseudomonas aeruginosa isoladas

Não disponibilizado pelo autor.The bacteriological quality of tap water from municipal water supplies, 20-L bottles of mineral water from water dispensers and samples collected from new 20-L bottles mineral water were comparatively studied. Heterotrophic plate count, total coliforms, termotolerant coliforms, Escherichia coli, fecal streptococci, Staphylococcus aureus, and Pseudomonas aeruginosa were enumerated. The results showed that 76.6% and 68.1% of the 20-L bottles from water dispensers and unoponed bottles of mineral water, respectively, were contaminated by at least one coliform or indicator bacterium and/or at least one pathogenic bacterium. The proportion of tap water samples from municipal water system contaminated was 36.4%. The bacteriological quality of municipal tap water is superior when compared to the 20-L bottles mineral water collected from water dispensers and samples collected from new 20-L bottles mineral water before installation in the dispensers. This highlights the need for an improved surveillance system for the bottled water industry. For the municipal water systems, it is recommended to perform the Pseudomonas enumeration periodically, in addition to the routine data collected by most system