The Trump EPA has created regulatory uncertainty around Biden's Lead and Copper Rule Improvements while delaying distribution of replacement funding. The rule — which requires water systems to replace all lead service lines within 10 years — remains technically in effect but faces litigation delays sought by the administration and slow funding distribution.
Millions of lead service lines remain in use across the United States. The EPA's initial 2024 estimate of 9.2 million lines was revised downward to approximately 4 million after water system inventories, though the NRDC estimates the true number at 9.7-12.8 million including unverified lines. Regardless of the exact count, the pipes leach lead into drinking water every day.
There is no safe level of lead exposure. Lead causes irreversible brain damage in children, reduces IQ, causes behavioral problems, and is linked to cardiovascular disease and kidney damage in adults. The crisis in Flint, Michigan — where lead-contaminated water poisoned an entire city — demonstrated the catastrophic consequences.
Lead pipes are concentrated in older cities and disproportionately affect Black and low-income communities. An Illinois study found 65% of Black and Latino residents live in communities containing 94% of the state's known lead service lines. Biden's rule was the first in decades to mandate full replacement rather than partial fixes.
Congress appropriated $15 billion specifically for lead pipe replacement through the Bipartisan Infrastructure Law. As of November 2025, FY25 replacement funding allocations still had not been published. The money exists. The rule exists. The science is unambiguous. Distribution has stalled.