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Hillsborough County Dept. of Health renews Health Alert for Lake Thonotosassa

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April 19, 2024

THONOTOSASSA – The Florida Department of Health in Hillsborough (DOH-Hillsborough) has issued a Health Alert for the presence of harmful blue-green algal toxins in Thonotosassa Lake.

This is in response to a water sample taken on April 17, 2024.

The public should exercise caution in and around Thonotosassa Lake.

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.
For updates, please visit the FDEP Algal Bloom Dashboard.