According to a blurb in today’s Chicago Tribune:
The top five beaches in Cook County that exceeded the national standard for E. coli levels in water in 2008 were: Winnetka Elder Park Beach, Evanston South Beach, Northwestern University Beach, followed by Montrose Beach and Rainbow Beach, both in Chicago.
The Winnetka and Evanston beaches are more “dog friendly” which might account for some of the higher E. coli levels. But they’re also located near the Wilmette locks which occasionally release contaminated water into the lake.
Something to think about…