Marc Edwards (born 1964) is a civil engineering/environmental engineer and the Charles Edward Via Professor of Civil and Environmental Engineering at Virginia Tech.An expert on water treatment and corrosion, Edwards's research on elevated lead levels in Washington, DC's municipal water supply gained national attention, changed the city's recommendations on water use in homes with lead service pipes, and caused the Centers for Disease Control and Prevention to admit to publishing a report so rife with errors that a congressional investigation called it "scientifically indefensible." He is considered one of the world's leading experts in water corrosion in home plumbing, and a nationally recognized expert on copper corrosion. He is also one of the whistleblowers in the Flint water crisis, al