EPA has completed its review of Illinois' September 2011 submission of new and revised water quality standards for the CAWS and Lower Des Plaines River. 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. The May 2012 and November 2011 actions, together, complete EPA's review of Illinois' September 2011 submission.

• Summary of EPA's actions on Illinois' new and revised water quality standards for the CAWS and Lower Des Plaines River (PDF)(7 pp, 911 K, September 15, 2015)