Water Quality Engineer
Department of Civil and Environmental Engineering, Virginia Polytechnic Institute and State University
Published January 28, 2007
Marc Edwards, a civil engineer, is playing a vital role in ensuring the safety of drinking water and in exposing deteriorating water-delivery infrastructure in America’s largest cities. An expert in the chemistry and toxicity of urban water supplies in the United States, he has made significant advancements in a broad array of areas, including arsenic removal, coagulation of natural organic material, and the causes and control of copper and lead corrosion in new and aging distribution systems. Melding rigorous science, concern for public safety, and dogged investigation, Edwards’ recent work focused on the identification and analysis of lead contamination in the Washington, D.C. area’s local water supply. In this research, he made the startling discovery that the addition of chloramine disinfectant (a new and widely used replacement for chlorine) in tap water actually increased the incidence of lead leaching in residential and commercial aqueducts, in many cases above acceptable EPA limits. He went on to link several cases of lead poisoning, earlier thought to be caused by lead paint, to local tap water. His findings also revealed systemic weaknesses in the regional water testing program, prompting the Washington Area Water Authority to replace lead service lines throughout the district. Now expanding his focus to other cities, he is defining new and more effective ways to test local water and predict the risk of chemical contamination in urban infrastructure. Through his exhaustive research efforts, Edwards is making critical contributions to the health of individuals and communities throughout the U.S. in an often-neglected area of domestic public safety.
Marc Edwards received a B.S. (1986) from the State University of New York at Buffalo and an M.S. (1988) and Ph.D. (1991) from the University of Washington in Seattle. Since 1997, he has been affiliated with Virginia Polytechnic Institute and State University, where he is currently the Charles P. Lunsford Professor of Civil and Environmental Engineering. He taught previously at the University of Colorado at Boulder.
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