The Florida Department of Health in Walton County has issued a health advisory for Blue Mountain Beach after recent water quality tests indicated high levels of fecal matter. The bacteria may cause diseases, infections and rashes. Moderate levels were also found at Grayton Beach and Holly Street Beach. However, Miramar, Dune Allen, Eastern Lake and Inlet beaches were all listed as having good water quality. Storm water runoff, pets, wildlife and sewage are all considered contributing factors.