An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Nutrient Pollution

Perspectives on the Impact to Public Health of Harmful Algal Blooms: July 25, 2013

This presentation is the second in a series about harmful algal blooms (HABs), a worsening environmental problem and public health threat. The presentation covers the various ways HABs threaten the health of people and animals, and what the public can do to stay healthy.

  • Lorraine Backer, Environmental Epidemiologist, Centers for Disease Control
  • Andy Reich, Program Coordinator for Aquatic Toxins Program, Florida Department of Health
You may need a PDF reader to view some of the files on this page. See EPA’s About PDF page to learn more.