Winnetka Beach Closed Due To High Bacteria Levels

WINNETKA, IL — Though it's the perfect weather to go to the beach, Winnetka beachgoers will have to steer clear of one beach due to high levels of fecal bacteria, according to the Lake County Health Department.

For residents planning a beach trip, the latest advisory or closure status may affect whether swimming is recommended. Elder Park Beach, which has been closed several times this year, was closed as of 10 a.m. Monday, the IDPH said.

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There is no anticipated reopening date, according to the IDPH, but the Winnetka Park District lists the beach as open for the day.

The health department said collected water samples are tested for E. coli bacteria. The agency said E. coli bacteria is found in the intestines of almost all warm-blooded animals, and while not all strains are the same, certain strains can make humans sick if ingested in high enough concentrations.

If water samples come back high for E. coli, defined by the health department as 235 E. coli/100 ml, the management body for the bathing beach is notified and a sign is posted indicating the beach closure. The health department also said rain events tend to lead to elevated bacteria levels in the water column and advised people to avoid swimming after a large rain event.

Depending on the level of bacteria, swimmers are encouraged to exercise caution in the water or avoid swimming altogether, according to the health department.