Noah Smith, Columnist

Clean Up Lead Before It Wrecks More American Lives

The link between the toxic metal, crime and other types of antisocial behavior is growing stronger. 

It’s everywhere.

Photographer: Spencer Platt/Getty Images North America
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When I was a kid, my dad half-joked that the Roman Empire fell because the Romans used lead to make their pipes, thus poisoning their drinking water supply. Even at age 7, I found that one hard to believe. But maybe, in some crucial ways, my dad was on to something. Strong evidence shows that lead is a uniquely toxic substance that can wreak permanent and devastating changes on both the human brain and a human life. Lead is also still ubiquitous in the U.S.

Like the Romans, the U.S. uses lead to supply water -- about a third of all U.S. water systems use lead pipes. And until just a few years ago, plumbing fixtures containing as much as 8% lead could be sold as “lead-free.” When those pipes become corroded, as they often do, people start consuming lead. And don’t be misled by the photos of brownish-yellow water coming out of pipes in the famously lead-contaminated city of Flint, Michigan -- lead in drinking water is generally colorless, tasteless and odorless.