WASHINGTON (AP) — The Environmental Protection Agency is tightening drinking water standards to impose stricter limits on four contaminants that can cause cancer. In a speech Monday, the E.P.A. administrator, Lisa P. Jackson, said the agency was developing stricter regulations for four chemical compounds: tetrachloroethylene, trichloroethylene, acrylamide and epichlorohydrin. All four compounds can cause cancer.
http://www.nytimes.com/2010/03/23/business/23water.html?src=twt&twt=nytenvironment