Health Department



The following map shows swimming advisories on Presque Isle State Park and Freeport Beach, North East, PA.  This map also shows warnings regarding Harmful Algal Blooms. This map is updated on a regular basis throughout the summer season when the analysis of recreational water samples for each sample site is completed. To see current results, click on the symbol at each location.



What are Harmful Algal Blooms (HABs)?

Cyanobacteria (also known as blue-green algae) are microscopic organisms found naturally in surface water that can sometimes multiply to form harmful algal blooms (HABs).


Harmful algal blooms can:

  • Produce extremely dangerous toxins that can illness or irritation, sometimes even death, in pets, livestock and humans
  • Create dead zones in the water
  • Pose treatment challenges for public drinking water systems
  • Hurt industries that depend on clean water



Harmful algal blooms need:

  • Sunlight
  • Slow-moving water
  • Nutrients (nitrogen and phosphorus)

To learn more, click on Be Aware of Harmful Algal Blooms (HABs), published by the Pennsylvania Sea Grant.

Erie County Courthouse - 140 West Sixth Street, Erie, PA 16501 - (814) 451-6000 - TDD Phone: (814) 451-6237 - Hours: Monday through Friday, 8:00am to 4:30pm
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