EPA's May 2012 action letter includes the approval of new recreational uses for 8 segments and the disapproval of recreational use downgrades for 4 segments. Illinois EPA submitted new and revised water quality standards for the Chicago Area Waterway System and Lower Des Plaines River in September 2011.
You will need Adobe Reader to view some of the files on this page. See EPA’s About PDF page to learn more.- Letter to Illinois EPA (PDF)(7 pp, 490 K, May 10, 2012)