DuPont’s toxic C8 chemical still unchecked, group says

When a toxic chemical used to make Teflon was discovered in the drinking water in parts of New York, Vermont and New Hampshire, federal and state officials made changes to protect residents. Officials in New York installed filters, and Vermont's health department set a new standard for the chemical, perfluorooctanoic acid, in drinking water, establishing one of the lowest allowable levels in the nation.