Read the full story from Illinois EPA.
Illinois Environmental Protection Agency Director John J. Kim announced the
completion of statewide sampling to investigate the prevalence and occurrence of per- and
polyfluoroalkyl substances (PFAS) in finished drinking water at all community water systems (CWSs)
in Illinois. Illinois EPA began the investigation in the fall of 2020 and completed sampling for 18
PFAS compounds in early 2022. Illinois EPA sampled the finished drinking water at the distribution
system entry points at 1,017 CWS, at 1,428 sample locations. This represents all operational
sources of water for the entirety of CWS in the state. Data gathered as part of this investigation will
aid in the development of future Maximum Contaminant Level (MCL) drinking water quality
standards for PFAS.
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