Five years ago, the city of Flint, Mich., switched its water source from the Detroit Water and Sewerage Department to the Flint River temporarily while it constructed a pipeline to connect to the Karegnondi Water Authority. The decision, coupled with a change in corrosion control treatment, ultimately led to a state of emergency as the city faced lead contamination. Similar situations have unfolded across the country from Newark, N.J., to Pittsburgh as cities work to combat aging water infrastructure. Flint’s situation helped raise awareness of the nation’s lead contamination concerns, initiating the development of new treatment products and legislation targeting lead contamination and lead in schools.

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