Keywords
schools
potable water
water supply
How to Cite
Abstract
This study analyzed the hygienic and sanitary conditions of the water samples used for drinking and for preparing scholar foods at public schools located in Caruaru city, Pernambuco, Brazil, by searching the occurrence of Pseudomonas aeruginosa and coliform group. Tap water samples were collected from the kitchens of 36 public schools located in Caruaru city, in which the people rates including students, teachers and school staff were more than 100, and teaching children aged from 0 to 5 years. The analyzed samples showed pH on average of 7.04 ± 0.53 at room temperature. Pseudomonas aeruginosa was detected in 83.3% of samples and coliforms were found in 69.4%; and 13.9% of water samples were negative for both bacteria. Among 20% of Pseudomonas aeruginosa positive samples, no coliform was found; 61.1% of Pseudomonas aeruginosa positive samples were directly related to the lack of adequate water reservoir cleansing. These findings showed that Pseudomonas aeruginosa investigation should be performed as a standard sanitary indicator for assessing drinking water condition, as according to the decree 518 of March 25, 2004 the water sample contaminated with Pseudomonas aeruginosa has not been the reason for disapproving it. This procedure is crucial because adding to the fact of Pseudomonas aeruginosa being an opportunistic pathogen, it is considered an indicator of pollution with organic material in water stored in reservoirs, which could be potential source of pathogens proliferation.
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