( January 17, 2025, 9:29 AM EST) -- SPOKANE, Wash. — A couple sued the 3M Co. and E.I. DuPont de Nemours & Co. in Washington federal court on Jan. 16, alleging that they are liable for contaminating the couple’s groundwater and with per- and polyfluoroalkyl substances (PFAS), which are an ingredient in the firefighting agent known aqueous film forming foam (AFFF), and contending that the chemicals caused the husband to develop cancer....