Public Water System Supervision Program Approval for the State of Illinois

Environmental Protection Agency: Notice is hereby given that the Environmental Protection Agency (EPA) has approved the State of Illinois' revisions to the State's Public Water System Supervision (PWSS) Program under the federal Safe Drinking Water Act for adoption of the federal Per- and Polyfluoroalkyl Substances (PFAS) Rule. The EPA has determined that the State of Illinois' PWSS program regulations and the revisions thereto are no less stringent than the above corresponding federal regulations and thus give the Illinois Environmental Protection Agency (IEPA) primary enforcement responsibility for the PFAS Rule. This determination on the State's request for approval of such primacy enforcement responsibility shall take effect in accordance with procedures described below, subject to timely substantial requests for public hearing. This approval action does not extend to public water systems in Indian Country. By approving this revision, the EPA does not intend to affect the rights of federally recognized Indian Tribes in Illinois, nor does it intend to limit existing rights of the State of Illinois.