The U.S. Environmental Protection Agency expects take formal action against DuPont for not reporting possible health risks of C-8, a chemical used in making Teflon.

The federal law requires that the EPA be told if a manufacturer finds out that a chemical is a risk to human health or the environment.

DuPont spokesman Clif Webb says company officials are confident they didn't violate the law.

The Wilmington, Delaware-based company says the chemical poses no risk to human health at the levels so far detected.

Residents of southeast Ohio and West Virginia are suing Dupont claiming their drinking water is contaminated by C-8 from its plant in Parkersburg, West Virginia.

Many of them attended an informational meeting held Thursday night at Meigs High School near Pomeroy, Ohio.

The Ohio Citizen Action group fielded questions and addressed health concerns to the group.

Jane Houlihan, the Vice President for Research, says home filtration systems don't necessarily work to filter out C-8 from water.

Many residents at the meeting said they felt DuPont has been holding too much pertinent information from them for way too long.