Beach Advisory 

Beaches Monitored from Memorial Day through Labor Day

From May to September, the Health Department's Lakes Management Unit samples Lake Michigan beaches 4 days a week. Beaches on inland lakes are tested biweekly (2 times per month). The water samples are tested for E coli bacteria, which are found in the intestines of almost all warm-blooded animals. While not all strains of E coli are the same, certain strains can make humans sick if ingested in high enough concentrations.
IBSP North3 (1)


If water samples come back high for E coli (235 E coli/100 ml), the management body for the bathing beach is notified and a sign is posted indicating the beach closure. Additionally, since rain events tend to lead to elevated bacteria levels in the water column, the LMU advises that persons avoid swimming after a large rain event.

Note: Per the Illinois Swimming Code, there is no swimming at dog beaches.
Current and Historic Beach Data

Beach Safety:  Check for the most recent beach hazards, including high waves:
Bacteria Levels 
 Flag  Status
 green Low Bacteria Levels, No Advisory
 yellow Elevated Bacteria Levels, Caution Swimming Advisory
 red High Bacteria Levels. No Swimming is Advised

August 21, 2019


Inland Beaches - Swim Ban (no swimming)

Mundelein Park District Beach - Diamond Lake

Round Lake Beach - Round Lake

Wauconda Park District - Bangs Lake

Paulus Park - Lake Zurich


Inland Beaches - Swim Advisory


Lake Michigan Beaches  Status
 Forest Park Beach green
Illinois Beach State Park North Beach green
Illinois Beach State Park Resort Beach green
Illinois Beach State Park South Beach 
Lake Bluff Dog Beach green
Lake Bluff Sunrise Beach green  
Moraine Dog Beach - closed for repairs red
North Point Marina Beach green
Nunn Beach (Great Lakes), Friday - Sunday only
Park Avenue Boating Facility
Rosewood Beach
Waukegan North Beach
Waukegan South Beach