Anyone planning a trip to the Georgia coast this summer may want to check beach conditions before heading into the water.

State officials have identified 15 miles of beachfront on Tybee Island, St. Simons Island, and Jekyll Island where elevated levels of enterococci, a type of fecal bacteria, have exceeded recreational water quality standards. The affected beach segments have been classified as “not supporting” recreational use under the Clean Water Act.

According to the Georgia Department of Natural Resources, enterococci bacteria can originate from wastewater, failing septic systems, stormwater runoff, wildlife, and pet waste. While the bacteria itself is used as an indicator, elevated levels may signal the presence of other disease-causing organisms that can increase the risk of illness for swimmers.

State officials are working to develop cleanup plans for the affected waters, and public comments on those plans are being accepted through July 16. Before visiting Georgia’s beaches, officials recommend checking the latest advisories through the Georgia Healthy Beaches program