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Blue-green Algae Bloom Alert for Additional Sites in Jacksonville

September 30, 2021

Contact:
Samantha Epstein
Samantha.Epstein@flhealth.gov
904-253-2276

Jacksonville, FL - The Florida Department of Health in Duval County has issued a health alert (at additional sites) for the presence of harmful blue-green algal toxins in the St. Johns River. The water samples activating the alert were taken between September 23 and 27, 2021. The public should exercise caution in and around the St. Johns River, as well as in and around the following locations:

  • St. Johns River – Lions Club Boat Ramp Alert Lifted
    The alert for Lions Club Boat Ramp has been lifted. Toxin analysis obtained on October 14, 2021 found no detectable microcystin toxin at this location.
  • St. Johns River – St Johns Marina
  • St. Johns River – Canal to Marco Lake
  • St. Johns River – Mouth of Craig Creek
  • St. Johns River – Mouth of Goodbys Creek
  • St. Johns River – Yacht Basin, near Ortega
  • St. Johns River – South end Hart Bridge
  • St. Johns River – at Worth Dr. S
  • St. Johns River – Christopher Creek – below San Jose Blvd.
  • St. Johns River – Mandarin Point Alert Lifted
    The alert for Mandarin Point has been lifted. Toxin analysis obtained on October 12, 2021 found no detectable microcystin toxin at this location.

Residents and visitors are advised to take the following precautions: 

  • Do not drink, swim, wade, use personal watercraft, water ski or boat in waters where there is a visible bloom.
  • Wash your skin and clothing with soap and water if you have contact with algae or discolored or smelly water.
  • Keep pets away from the area. Waters where there are algae blooms are not safe for animals. Pets and livestock should have a different source of water when algae blooms are present.
  • Do not cook or clean dishes with water contaminated by algae blooms. Boiling the water will not eliminate the toxins.
  • 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.
  • Do not eat shellfish in waters with algae blooms. 

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.

What do I do if I see an algal bloom?  

The Florida Department of Environmental Protection collects and analyzes algal bloom samples. To report a bloom to DEP, call the toll-free hotline at 855-305-3903 or report online.

To report fish kills, contact the Florida Fish and Wildlife Research Institute at 1-800-636-0511.

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.

Contact your veterinarian if you believe your pet has become ill after consuming or having contact with blue-green algae contaminated water.

If you have other health questions or concerns about blue-green algae blooms, please call the Florida Department of Health in Duval County at 904-253-1280.  

About the Florida Department of Health 

The department, nationally accredited by the Public Health Accreditation Board, works to protect, promote and improve the health of all people in Florida through integrated state, county and community efforts.

Follow us on Facebook, Instagram and Twitter at @HealthyFla. For more information about the Florida Department of Health please visit www.FloridaHealth.gov.