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Hillsborough Dept. of Health issues blue-green algae Health Alert for Lake Thonotosassa

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March 29, 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 March 27, 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 to appropriate temperature.
  • Do not eat shellfish in waters with algae blooms.
For updates, visit the Florida DEP Algal Bloom Dashboard.