This study was conducted to determine the original indicator of microbial pollution (Escherichia coli) in the major swimming areas of Bandar Abbas. Three major swimming areas were selected in Bandar Abbas that included Soroo, Khaje Ata and Ghadir Park.  During the present study, 30 sea water samples were gathered to evaluate the important indicator of microbial contamination and parameters such as pH, salinity was studied in autumn and winter 2015. Results showed that the mean of microbial pollution in swimming areas of Soroo, Khaje Ata and Ghadir Park in autumn was 770, 678.1 and 468.7 MPN/100 ml respectively, and in winter 537.2, 500.6 and 374 MPN/100 ml respectively that all results of microbial pollution were higher than national and global standards. The changes of microbial pollution and physical- chemical parameters were not significant in the two seasons. But the microbial pollution values of Escherichia coli in third stations were significantly decreased in comparison to seaside stations.

Keywords: Microbial Contamination, Escherichia coli, Swimming Area, Bandar Abbas, Urban Wastewater

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