PFOA has been phased out of production, but replacement compounds, such as “GenX,” have been developed and are increasingly being detected in the environment. There are thousands of PFAS compounds. The compounds have most commonly been detected in groundwater, but have also been detected at elevated concentrations in surface waters. WHAT ARE THE ISSUES I MAY HAVE HEARD ABOUT? PFAS have been linked to various toxicological issues and are highly persistent in the environment. The U.S. Environmental Protection Agency (EPA) has set a non-enforceable Health Advisory Level of 70 nanograms per liter or parts per trillion (ppt) for combined PFOA and PFOS. Several States have established requirements for different PFAS ranging from MCLs to notification and response levels to guidance levels. The EPA released a PFAS Action Plan in February 2019, and made a preliminary decision to establish drinking water standards for PFOA and PFOS in March 2020
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