The Florida Department of Health in Miami-Dade issued a swimming advisory for the 53rd Street Beach in Miami Beach after two days of testing found too much of the bacteria indicating human or animal fecal matter.

The advisory suggests no swimming at that location because the water brings “an increased risk of illness,” the department states.

Too much enterococci, a bacteria that’s usually in mammals intestinal track, “is an indicator of fecal pollution, which may come from storm water runoff, wildlife, pets and human sewage.”

Bacterial content needs to be below acceptable levels through two days of tests before the swimming advisory is lifted.