The Natural Resources Defense Council offers a new map of lead pipes, which are a problem in all 50 states

For investigative reporters tracking lead pipes that still deliver drinking water, the Natural Resources Defense Council’s new Lead Pipe Data Map Tool is a smart place to start exploring.

“Whether you want the local or the national perspective, this data map looks to be the most current and detailed available,” reports Joseph A. Davis of the Society of Environmental Journalists. “We care about lead in drinking water because it is a neurotoxin that robs children of IQ points and causes a host of other health problems, even in adults.”

The news about lead-tainted water in Flint, Michigan, may have sparked outrage, but “lead pipes in water systems are a serious problem in all 50 states,” Davis writes. “The Environmental Protection Agency updated its Lead and Copper Rule in October 2024. . . .The Bipartisan Infrastructure Law of November 2021, committed $15 billion to fund the replacement of lead service lines that take water from mains to individual buildings (the main source of the problem).”

Under the new Lead and Copper Rule, all drinking water systems must inventory their lead service lines and report their findings to the EPA. “Much of the data comes from the EPA as utilities report in,” Davis explains. “The map not only tallies known lead service lines — but also service lines whose metal composition is unknown or estimated.”

To use the data efficiently, focus on the NRDC’s mapping tools and remember that utility service areas can differ from municipal boundaries. Davis reports, “One of the nifty features NRDC gives you is the ability to add multiple overlays to the map as you use it.” 

Find the tiny icons in the top-left and top-right corners of the map to alter map layers. The mapping overlay feature can also show active lead pipes according to their congressional district.

While data and numbers don’t tell the full story, they provide a good foundation for a narrative to take shape. Davis also advises gathering information from your community:

• Ask water customers about their awareness of lead pipes carrying drinking water. What's their ability to pay for service line replacement?
• Talk to utilities about their plans and concerns regarding pipe replacement. 
• Discuss drinking water safety and remaining lead pipes with state and EPA/state regulators.
• Ask your congressperson how budget cuts could affect funding for this critical work.