ORLANDO – The Florida Department of Health in Orange County has issued a Health Caution for the presence of blue-green algae in Lake Ivanhoe. This is in response to a site visit and water sample taken by the Florida Department of Environmental Protection on April 25, 2022. The public should exercise caution in and around Lake Ivanhoe.

Residents and visitors are advised to take the following precautions:

• You should not drink, swim, wade, use personal watercraft, water ski or boat in waters where there is a visible bloom.
• Avoid getting water in your eyes, nose, or mouth
• You should keep pets and livestock away from the waters in this location
• Eating fillets from healthy fish caught in freshwater lakes experiencing blooms is safe. Rinse fish fillets with tap or bottled water, throw out the guts and cook fish well.
• You should not eat shellfish from this location

What is blue-green algae?

Blue-green algae are a type of bacteria that is common in Florida’s freshwater environments. A bloom occurs when rapid growth of algae leads to an accumulation of individual cells that discolor water and often produce floating mats that emit unpleasant odors.

Some environmental factors that contribute to blue-green algae blooms are sunny days, warm water temperatures, still water conditions and excess nutrients. Blooms can appear year-round but are more frequent in summer and fall. Many types of blue-green algae can produce toxins.

Is it harmful?

Blue-green algae blooms can impact human health and ecosystems, including fish and other aquatic animals.

For additional information on potential health effects of algal blooms, visit floridahealth.gov/environmental-health/aquatic-toxins.

Find current information about Florida’s water quality status and public health notifications for harmful algal blooms and beach conditions by visiting ProtectingFloridaTogether.gov. Protecting Florida Together is the state’s joint effort to provide statewide water quality information to prioritize environmental transparency and commitment to action.

Report symptoms from exposure to a harmful algal bloom or any aquatic toxin to the Florida Poison Information Center, call 1-800-222-1222 to speak to a poison specialist immediately.

If you have other health questions or concerns about blue-green algae blooms, please call the Florida Department of Health in Orange County Algal Bloom Information Line at 407-723-5216.