Blue-green Algae in Illinois
2 confirmed blue-green algae reports in Illinois, 1 still active. About this disease: symptoms and prevention.
2
Reports on record
1
Currently active
0
Last 7 days
1
Last 30 days
Where in the state
2
Recent reports
Blue-green Algae · in another animal
Active · Aug 10, 2026
Wheaton, DuPage County
Confirmed blue-green algae bloom at Herrick Lake, Herrick Lake Forest Preserve (DuPage Forest Preserve District advisory, Aug 10). Keep dogs out of the water
Source ↗Blue-green Algae
Historical · Jul 21, 2026
Glendale Heights, DuPage County
East Branch Forest Preserve off-leash DOG area
Source ↗