65 ILCS 5/11-123-17

No portion of a utility, except a breakwater, shall be constructed within one-half mile of any intake of water for public consumption, and in constructing such a utility no ashes, cinders, or waste shall be dumped into any public waters within 4 miles of any intake of water for public consumption unless placed behind retaining bulkheads. This section does not apply to any city or village whose water frontage is exclusively on a river.