In 2017, DEP started developing regulations for PFAS, a class of "forever" chemicals. It might be done by 2023. PFAS is linked to some types of cancers.
The Physicians for Social Responsibility found PFAS was used in 1,200 wells in six states. Although no evidence shows that PFAS was used in Pennsylvania, “we can’t be confident that we know everything."
Twenty locations along the river including Pa. will be sampled for this group of "forever chemicals" associated with reproductive problems, liver, kidney and thyroid disease, and cancer.
PFAS can make its way into water supplies. If the Allegheny County Airport Authority doesn’t investigate, some lawyers say it could find itself in legal jeopardy.