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Blue-Green Algae

The Wisconsin Department of Health Services, Division of Public Health (DPH) collects information about human and animal illness resulting from exposure to blue-green algae.

Tracking illness information will help DPH measure the problem of blue-green algae in our lakes and rivers.

If you get sick after swimming in a Wisconsin lake or river, please report possible algae-related illness.

This program does not provide medical treatment, so if you are experiencing severe symptoms seek medical attention immediately.

Algal slurry at the top of a stagnant pond forming swirl and bloom patterns

When in doubt, stay out!

 

For members of the general public and veterinarians: call 608-266-1120 or complete the online form Harmful Algae Bloom (HAB) Illness or Sighting Survey, F-02152 (Web Survey) to report any blue-green algae blooms and related human or animal illnesses to the Wisconsin Harmful Algal Blooms Program.

 

Questions? Call 608-266-1120 or email us.

Last revised September 21, 2021