An individual holds a lead pipe

An individual holds a lead pipe, a steel pipe and a lead pipe treated with protective orthophosphate. The Environmental Protection Agency is only now requiring water systems to inventory their lead pipes decades after new ones were banned.

A new federal rule will require water utilities across the country to pull millions of lead drinking water pipes out of the ground and replace them, at a cost of billions of dollars.

States, cities and water utilities agree that the lead pipes need to go to ensure safe water for residents. But they say they may struggle to do so in the 10-year window required under the rule, and they fear some ratepayers will be hit with massive cost increases to pay for the work.