DOH-Orange Issues Blue-Green Algae Health Alert for Lake Formosa (Pedestrian Bridge) - Florida Department of Health in Orange County

August 14, 2026 - 20:51

The Florida Department of Health in Orange County has posted a health advisory for Lake Formosa, specifically around the pedestrian bridge area, after water samples collected on August 11 showed the presence of blue-green algae. The alert warns residents and visitors to avoid direct contact with the water in that zone, as the algae can produce toxins that are harmful to people and pets.

Health officials say that swimming, wading, or any activity that involves swallowing or inhaling water droplets should be avoided until further notice. Fishing is also discouraged, and anyone who does handle fish from the lake should rinse them thoroughly with clean water and cook them well. Pets, especially dogs, are at higher risk because they may drink the water or lick their fur after being near the shoreline.

The advisory is based on a single sample, and the situation could change quickly. The department will continue to monitor the lake and will lift the alert once test results show the algae is no longer at concerning levels. Symptoms of exposure include skin irritation, stomach cramps, vomiting, and in more severe cases, liver or nervous system damage. Anyone who experiences these symptoms after contact with the water should seek medical attention.

For now, the recommendation is simple: keep yourself and your animals out of the water near the pedestrian bridge, and wash off with tap water if accidental contact happens. The rest of the lake may still be used for boating or other activities that do not involve direct water contact, but caution is advised.