Contaminação bacteriana em água natural, em perímetro urbano

Abstract

Water is essential for sustaining life, but there are numerous microorganisms present in it, from different sources and some bacteria that are indicators of sanitary quality, especially in food and water analysis. The aim of this study was to analyze water samples from natural sources in the urban area in the city of Uberlândia, in order to verify the presence of epidemiologically important microorganisms. For this purpose, 22 water sample collections were carried out in 11 different locations in the city, considering leisure and recreation areas, rivers that cut through the city and a rainwater impoundment. Microbiological analyses were performed in search of Gram-positive and Gram-negative bacteria. Resulting in 95.5% of the contaminated samples, in a total of 46 isolates, including Citrobacter spp., Enterobacter spp., Enterococcus spp., Escherichia coli, Klebsiella spp., Morganella spp., Pantoea agglomerans, Proteus spp., Providencia spp., Serratia spp., Shigella spp. and Staphylococcus aureus, where stands out by frequency Shigella spp. (28%) and Klebsiella spp. (20%). Places for leisure and recreation of the population were the ones with the highest contamination (65%), possibly due to the large flow of people on them. Water from natural sources is of great importance to the city and the incorrect disposal of contaminated waste, it can cause the contamination of these environments, impacting to the population.