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June 30, 2016. Blacksburg, Virginia. <br />
 As part of the presentation Marc Edwards gives to reporters about the Flint, Michigan water situation, he shows rusted lead water pipes, water filters and water samples from the home of LeAnne Walters, whose home was ground zero for the lead contamination crisis.<br />
Marc Edwards is a civil engineering/environmental engineer and the Charles P. Lunsford Professor of Civil and Environmental Engineering at Virginia Tech. He is an expert in water quality and corrosion, and his work in Washington DC  and in Flint, Michigan helped to expose high levels of lead contamination in the water supplies of those two cities, triggering investigations into the cause of the pollution.