In this series, Sharon Lerner exposes DuPont’s multi-decade cover-up of the severe harms to health associated with a chemical known as PFOA, or C8, and associated compounds such as PFOS and GenX.

C8 was once used by DuPont to make Teflon at the ... The study said elevated PFOA concentrations suggest exposure through drinking water. From the sera collected between 1991 and 2013 of 931 ...

The EPA announced in March that it was proposing a maximum contaminant level of 4 parts per trillion for PFOA, also known as C8 or perfluorooctanoic acid, and PFOS, a related substance phased out ...