| Summary: | This article analyses the water used at hospitals in Rio de Janeiro, Brazil. The research, based on microbiological and physical-chemical aspects, suggests subsidies for normalization of hospital potable water systems and makes recommendations for standardization of operational procedures for inspection for Legionella pneumophila. A total of 16 hospitals were inspected and positive results for the presence of L. pneumophila were found at five hospitals. These hospitals were integrated in a research project aiming at the detection and quantification of this pathogen. During 10 consecutive weeks, four collections representing a total of 200 analyses were done at the five researched hospitals. In this way seven physical-chemical parameters and three microbiological parameters were observed to evaluate the quality of water in each hospital. The results showed that routine surveillance for a hospital water distribution system is fundamental for public health and must include, as a priority, monitoring of L. pneumophila. The water quality varies in accordance with the hospital water system involved. It is important and necessary to implement environmental culturing in order to minimize hospital infection, in particular, pneumonia data and also to provide the basis for disinfection of the water system.
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