Qualidade microbiológica e resistência antimicrobiana em rios e poços de Curitibanos – SC
Abstract
In rural places and regions that lack public water supply, use of contaminated water may cause serious health problems, due to microbiological contamination. Another very serious, although neglected issue, is the occurrence of bacteria that are resistant to antibiotics in the water used by population. Hence, this study evaluated the physical-chemical and microbiological quality, as well as antimicrobial resistance, at the region of Curitibanos – SC. Samples were collected from rivers Marombas, Correntes, Canoas and Pessegueirinho and adjacent wells. The average number of coliforms in rivers was 631 x 100mL-1 and indicates restrictions to water use. Thermotolerant coliforms occurred in 75% of sampled wells, and are in for nonconformity for human consumption. Highest percentage of resistant isolates occurred in relation to ampicillin and ampicillin + sulbactam, in both rivers and wells. Temperature and precipitation were the environmental factors that were most correlated to physical-chemical and microbiological variables and may contribute to water pollution. Use of these water resources without previous treatment represents risks to health of the population, besides representing a critical environmental problem, due to dissemination of resistant microorganisms throughout the environment.
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