( February 21, 2025, 1:17 PM EST) -- PHILADELPHIA — The 3M Co. has removed a per- and polyfluoroalkyl substances (PFAS) contamination lawsuit to Pennsylvania federal court, claiming immunity for allegations that it and other companies such as E.I. DuPont de Nemours & Co. are liable for injuries connected to PFAS exposure. 3M says that under the government contractor defense, it is not liable for manufacturing the fire fighting agent aqueous film forming foam (AFFF), which is alleged to have polluted drinking water....