GenX rises in untreated in Ohio’s Little Hocking water across from West Virginia’s Chemours Washington Works plant

Still, Chemours, which owns the Washington Works plant where GenX is used in the production of Teflon, has agreed to test for the substance more frequently, an attorney representing the Little Hocking Water Association said.

The association’s wellfield is located across the Ohio River from the Washington Works facility. GenX is part of the same family of perfluorinated compounds as C8, whose presence in area water systems has been a source of concern and litigation.