期刊
INTERNATIONAL JOURNAL OF HYGIENE AND ENVIRONMENTAL HEALTH
卷 211, 期 5-6, 页码 504-509出版社
ELSEVIER GMBH
DOI: 10.1016/j.ijheh.2007.09.004
关键词
Bottled mineral water; Tap water; Coliform; Streptococci; Staphylococcus spp.; Pseudomonas aeruginosa
资金
- National Council for Scientific and Technological Development (CNPq)
- Coordination for the Improvement of Higher Level Personnel (CAPES)
- Post-graduate Program in Microbiology of the State University of Londrina
The bacteriological qualtiy of tap water from municipal water supplies, 20-L bottles of mineral water from water dispensers and samples collected from new 20-L bottles of mineral water were comparatively studied. Total coliforms, termotolerant coliforms, Escherichia coli, fecal streptococci, Pseudomonas aeruginosa, Staphylococcus spp. and heterotrophic plate count were enumerated. The results showed that 36.4% of the tap water samples from municipal water systems and 76.6% of the 20-L bottles of mineral water from water dispensers were contaminated by a least one coliform or indicator bacterium and/or at least one pathogenic bacterium. The bacteriological quality of municipal tap water is superior when compared with the 20-L of mineral water collected from water dispensers and samples collected from new 20-L bottles of 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 systems. (C) 2007 Elsevier GmbH. All rights reserved.
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