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Lead and Copper Rule 2024 — the federal lead-pipe inventory mandate
The 2024 federal Lead and Copper Rule Revisions (LCRR) mark the biggest shake-up in US drinking-water lead policy in decades. As of October 2024, every community water system (CWS) in the country must publish an inventory of its service lines — including how many are lead, galvanized requiring replacement, or unknown material.
Published 2026-04-25 · Last reviewed 2026-04-25 · methodology
Why the rule changed
The original 1991 Lead and Copper Rule focused on optimization (corrosion control) — keeping lead out of the water by treating chemistry, not by removing the lead pipes. After Flint, Newark, and Washington DC crises, the EPA acknowledged that optimization alone was insufficient.
The 2024 LCRR shifts to physical pipe removal as the goal. Utilities must inventory their pipes, publish the list, and replace lead service lines on a deadline.
What the inventory must include
Every service line connecting the water main to a customer's premises, classified into four categories: Lead, Galvanized Requiring Replacement (GRR — pipes downstream of historical lead), Non-Lead, or Unknown.
"Unknown" is huge: many older utilities have records gaps. Federal expectation is unknowns are progressively investigated and reclassified.
Inventories are public — your utility's web portal must publish (or link to) the full list, often searchable by address.
Replacement timeline
Utilities have 10 years to replace all lead service lines once their inventory is complete. The federal money is available via the EPA's Drinking Water State Revolving Fund and the Bipartisan Infrastructure Law allocation.
Some states have earlier replacement targets. Michigan's Lead and Copper Rule (2018) requires full replacement by 2041; New Jersey's (2021) by 2031.
What zipradar shows
zipradar federates the EPA LCRR national inventory plus the RTI International national lead-pipe map. For your water utility, we show the count of lead, galvanized-requiring-replacement, and unknown-material lines, plus the state's reporting compliance status.
Coverage rolls out state-by-state on the federal timeline. Utilities with incomplete inventories are flagged rather than omitted.
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