City of Waterloo issued the following announcement on Dec. 14
Illinois American Water would like to share results from samples that the Illinois Environmental Protection Agency (Illinois EPA) recently collected from our water systems for compounds known as Per- and Polyfluoroalkyl Substances (PFAS). These samples were collected as part of a review by Illinois EPA of water supplies across Illinois. Illinois EPA is requiring Illinois American Water to provide you notice of these sampling results.
Customer Notice & IEPA Test Results
Original source can be found here.