In São Roque beach Klebsiella spp. occurred in higher percentage (28.6%), followed by Enterobacter cloacae (28.5%), E. coli (11.2%), Aeromonas spp (15.9%), Klebsiella pneumoniae (9.9%), E. faecalis (2.5%), E. faecium (0.93%) and E. gallinarum (0.86%).