MIAMI (CBS4) – If you plan to hit Hobie Beach on Rickenbacker Causeway before the afternoon rain hits, stay out of the water.

Miami-Dade’s health department has issued a swimming advisory for Hobie Beach after samples taken from the water show a higher amount of bacteria than what is deemed safe under federal guidelines.

The advisory issued recommends not swimming at this location at this time. Those who ignore the warning face an increased risk of illness, particularly for susceptible individuals.

Since August, 2002, the health department has conducted beach water quality testing at 17 sites including Hobie Beach. Water samples taken from the sites are tested for enteric bacteria which is normally found in the intestinal track of humans and animals, and which may cause human disease, infections, or illness. The prevalence of that bacteria is an indicator of  pollution from feces, which may come from storm water run-off, wildlife, pets and human sewage.