A swim advisory is in effect for the Oak Street and Montrose Avenue beaches, and swimmers are warned the water is still cold this early in the season.
Swimming bans lifted at Chicago beaches
June 21, 2009 (CHICAGO) The Wilmette Avenue Locks were opened on Friday to accomodate the heavy runoff from the rain. That released toxins into the lake, which could be harmful to swimmers. However, tests Sunday morning showed the lake water was safe for swimming.
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