The U.S. Environmental Protection Agency (EPA) said it will spend $3 billion to help states and territories identify and replace lead water pipes.

“The science is clear, there is no safe level of lead exposure, and the primary source of harmful exposure in drinking water is through lead pipes,” EPA Administrator Michael Regan said, announcing the funding Thursday in an agency news release.

Lead poses serious health risks and can cause irreversible brain damage in children.

The funding announced Thursday is part of the Bipartisan Infrastructure Law, which President Joe Biden signed into law in 2021. It sets aside $15 billion overall to identify and replace lead pipes.