Home / Environment / Swimming Advisory Issued for 3 Lake County Beaches
Swimming Advisory Issued for 3 Lake County Beaches
23 Jun
Summary
- Three Chicago-area beaches have advisories for high bacteria.
- Rosewood Beach, Valley Lake South Beach, and Illinois Beach State Park are affected.
- Rain is a common cause of elevated bacteria levels, officials noted.
Lake County officials have issued swimming advisories for three popular beaches in the Chicago area as of Tuesday, June 23, 2026. Rosewood Beach in Highland Park, Valley Lake South Beach near Grayslake, and the Illinois Beach State Park Resort Beach in Zion are all experiencing high levels of bacteria.
Residents are being cautioned against entering the water at these affected sites. Water quality is monitored through testing for E. coli, a common indicator of contamination. Heavy rainfall is frequently cited as a cause for increased bacteria counts, prompting officials to advise against swimming following such weather events.
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