Wydanie 338(44)4 2017

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https://oa.zut.edu.pl/handle/20.500.12539/701

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    Bacteriological contamination of water in selected bathing areas in Małopolska
    (Wydawnictwo Uczelniane Zachodniopomorskiego Uniwersytetu Technologicznego w Szczecinie, 2017) Chmiel, Maria J.; Mazur, Edyta; Król, Teresa; Department of Microbiology, University of Agriculture, Kraków; Department of Microbiology, University of Agriculture, Kraków; Department of Microbiology, University of Agriculture, Kraków
    Microbiological contamination of waters used for recreational purposes may constitute a serious danger to the health of users. Only a few reservoirs in Lesser Poland are subjects of constant control and meet the microbiological criteria. The work was aimed at evaluating the degree of microbiological contamination of selected bathing areas in Małopolska voivodeship in the municipal areas Tarnow and Krakow. Samples were taken from 10 sampling points, three times in the period from June to October 2016. Microbiological analyzes of water were performed using membrane filtration and serial dilutions methods. The total number of mesophilic and psychrophilic bacteria as well as number of Escherichia coli, fecal streptococci (enterococci) and staphylococci were determined. In all examined reservoirs the occurrence of microbiological indicators of bad hygienic condition of water was confirmed. Numerous occurred bacteria of the species E. coli, which was the main reason for the water being taken to those that did not meet the bathing area requirements. More contaminated were bathings in the municipality of Kraków than Tarnów, but these were not statistically significant differences. The amount of psychrophilic bacteria in the waters was higher than mesophilic ones, suggesting that the main source of microorganisms is the natural environment. Recreational areas under constant monitoring were characterized by slightly less contamination, but rarely met criteria for bathing due to the large number of indicator bacteria. The biggest water pollution was found at the peak of the tourist season in August. Considering the average values of measurements only bathing “Katamaran” meet the requirements.