However, the city says lead pipes can leach toxins into water when it sits stagnant for over six hours. Those pipes are now are being systematically replaced under a federally mandated program.

FILE - A copper water supply line, left, is shown connected to a water main after being installed for lead pipe, right, July 20, 2018, in Flint, Mich. (AP Photo/Paul Sancya, File) From Philly and the ...

In a first-of-its-kind report, the Environmental Protection Agency has released a comprehensive assessment on lead pipe infrastructure across the United States, revealing that an estimated total ...