Chemours’ PFAS Challenge Affects Semiconductors, State Cleanups

The outcome of a Chemours Co. lawsuit challenging a PFAS health advisory the EPA set for drinking water could affect cleanups, public health, and regulatory processes, attorneys said in recent interviews.

The lawsuit focuses on a particular PFAS used to make a type of chemical, perfluoroalkoxy alkanes (PFA), important to the semiconductor industry. PFA is critical to the Chips Act’s goal of building domestic sources of materials for chip producers, according to technical analyses of materials semiconductor manufacturers use and other reporting.

Chemours has asked the US Court of Appeals for the Third Circuit to vacate ...