Imminent Endangerment: “Lead” Astray by the EPA
May 4, 2006. Louis Clark Vanuxem Lecture
Marc Edwards is an internationally known expert in potable water treatment. A leading researcher in the causes and control of copper and lead corrosion, Edwards was an author of a report published in August 2005 linking traces of lead in tap water in Washington, D.C. and other metropolitan areas to leaching from household fixtures, not just from pipes further from the home. He has testified in Congress urging the U.S. Environmental Protection Agency to address the impact of water treatment changes specifically water utilities’ switch, which was mandated by EPA regulations, from free chlorine to chloramine (chlorine plus ammonia) as a disinfectant on home plumbing systems.