Silent Spring Institute Northeastern University--Social Science Environmental Health Research Institute Michigan State University Toxics Action Center Massachusetts Breast Cancer Coalition Testing for PEASE

State-by-State Regulation of PFAS Substances in Drinking Water

In the absence of an enforceable federal per- and polyfluoroalkyl substances (“PFAS”) drinking water standard, many states have embarked on the process of regulating PFAS compounds in drinking water.  The result is a patchwork of regulations and standards of varying stringency which presents significant operational and compliance challenges to impacted industries.  This client alert surveys the maximum contaminant levels (“MCLs”), as well as guidance and notification levels, for PFAS compounds – typically perfluorooctane sufonic acid (“PFOS”) and perflurooctanic acid (”PFOA”)  – in drinking water that have been enacted or proposed at the state level. Read more…