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Comparison of the microbiological quality of water coolers and that of municipal water systems.

https://arctichealth.org/en/permalink/ahliterature218521
Source
Appl Environ Microbiol. 1994 Apr;60(4):1174-8
Publication Type
Article
Date
Apr-1994
Author
B. Lévesque
P. Simard
D. Gauvin
S. Gingras
E. Dewailly
R. Letarte
Author Affiliation
Service Santé et Environnement, Centre de Santé Publique de Québec, Ste. Foy, Canada.
Source
Appl Environ Microbiol. 1994 Apr;60(4):1174-8
Date
Apr-1994
Language
English
Publication Type
Article
Keywords
Drinking
Equipment Contamination
Household Articles
Humans
Hygiene
Mineral Waters - analysis
Quebec
Sanitary Engineering
Water Microbiology
Water Pollution
Water Supply - standards
Abstract
The microbiological quality of tap water and that of water from 50 water coolers located in residences and workplaces were comparatively studied. In addition, difference factors that might influence the bacteriological contamination of water dispensers were examined. Aeorbic and facultative anaerobic heterotrophic bacteria, total coliforms, and two indicators for fecal contamination (fecal coliforms and fecal streptococci) as well as three types of pathogenic bacteria (Staphylococcus aureus, Pseudomonas aeruginosa, and Aeromonas spp.) were enumerated. It was found that 36 and 28% of the water dispenser samples from the residences and the workplaces, respectively, were contaminated by a least one coliform or indicator bacterium and/or at least one pathogenic bacterium. The respective proportions of tap water samples contaminated in a similar fashion were 18 and 22%, much less than those observed for water coolers (Chi2(1) = 3.71, P = 0.05). We were unable to discern the dominant factors responsible for the contamination of water coolers, but cleaning the water dispenser every 2 months seemed to limit the extent of contamination.
Notes
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PubMed ID
8017912 View in PubMed
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