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 may need a PDF 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)