Blue-Green Algae

The Wisconsin Division of Public Health collects information about human and animal illness resulting from exposure to blue-green algae. Tracking illness information will help the Wisconsin Division of Public Health 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.

When in doubt, stay out!

Pond covered by algae

 

 

 

 

 

Last Revised: January 14, 2015