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American Water Works Association

Lindsey Smith / Michigan Radio

The U.S. EPA is making long term revisions to the 25-year-old Lead and Copper Rule. The new rules are expected to come out this year. A top EPA official says one of the biggest changes could be an expensive one.

Because of the water crisis in Flint, city officials now know there are more than 20,000 lead service lines, the water pipes connecting homes to a water main, still buried underground in Flint.

Because of Flint, we know that other cities are now at least trying to figure out how many lead service lines they have and where they’re located.