SAN DIEGO -- Swimmers were advised Wednesday to avoid a portion of Mission Bay due to high bacteria levels.
The County of San Diego's Department of Environmental Health issued a water contact for Bonita Cove because "bacteria may exceed health standards."
A sign posted in the sand warned beachgoers that contact with water in the area "may cause illness."
Some visitors were disappointed they couldn't take a dip.
"It's a little bit of a bummer, especially since we're visiting," said Melissa Sanchez, who lives in Texas.
For those who missed the signs and got near the water, lifeguards were there to remind people to avoid contact with it.
It's not known when swimmers will be allowed to go in the water again.