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Cape Coral Warns of Toxic Blue-Green Algae

June 29, 2023

The city of Cape Coral has updated signage at Jaycee Park informing visitors of the presence of toxic blue-green algae, which was reported by the Florida Department of Health in Lee County. Blue-green algae has been reported at several locations in the Caloosahatchee River, so City officials encourage the public to exercise caution when near any waterway. For information on reported algae blooms in Florida, visit the state’s  Algal Bloom Dashboard.

Media Instructions:
The city of Cape Coral will provide the media with a subject matter expert interview Friday, June 30, at 9:30 a.m. at Jaycee Park. Media must RSVP to

The City routinely monitors for the presence of harmful algae and potential toxins within Cape Coral’s waterways using a private contractor. County and State partners also monitor these conditions. The City is working to deter the presence of blue-green algae in Cape Coral’s canals by activating bubble curtains during the incoming tides.

The City reminds residents that pet waste, grass clippings, and fertilizers containing nitrogen or phosphorus entering waterways can worsen algal blooms. The use of fertilizers containing nitrogen or phosphorus is not permitted between June 1 and Sept. 30, and grass clippings should be disposed of as horticulture waste. For more information on blue-green algae and how to report algal blooms, visit

To find current information about Florida’s water quality status and public health notifications for harmful algal blooms and beach conditions, visit