PFOA and PFOS have been found in the drinking water of 200 million Americans, including 6 out of 10 Illinoisans.

The administration said it wants to rescind and reconsider whether limits are needed for four PFAS that chemical companies are still producing and using in the U.S. — despite known health risks.

The Environmental Protection Agency says it will roll back limits on several types of "forever chemicals" in drinking water.