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LCRR utility compliance status in Wisconsin

How are Wisconsin water utilities doing on EPA LCRR compliance?

Last verified from EPA SDWIS: 2026-04-14
Water systems
10,597
Known lead
0
Unknown
0
BIL funding
$0M

Lead Service Line Compliance in Wisconsin Water Systems

Where Wisconsin stands

Wisconsin's water utilities serve approximately 5.1 million people across 10,597 water systems. As of October 2024, these systems had completed their initial Lead and Copper Rule Revision (LCRR) inventories—a major milestone in the EPA's push for transparency about lead service lines.

The state's reported data shows 0 known lead service lines and 0 classified as unknown in the October 2024 submission. This result is unusual and warrants context: either Wisconsin utilities have systematically replaced lead lines, have very limited legacy infrastructure, or the reporting reflects early-stage inventory processes where many lines remain to be fully assessed.

What the LCRR requires

The Lead and Copper Rule Revision, which took effect in 2024, requires every water utility to:

  • Locate and categorize every service line in their system
  • Report whether each line is lead, non-lead, or unknown
  • Develop a plan to replace lead lines, starting with schools and childcare facilities
  • Make their inventory publicly available

Wisconsin's Department of Natural Resources (DNRE) serves as the state primacy agency, overseeing compliance and enforcement.

What you should do

If you live in Wisconsin, your utility's inventory should now be public. The data reported to EPA is part of a larger effort—whether a line is marked "known lead" or "unknown" in early reports, utilities have until 2027 to complete full inventories and begin replacements.

Don't assume your line is safe because it's not listed as lead. "Unknown" lines often include older homes where records are incomplete. Your utility can tell you your line material if you ask directly, even if it's not yet in the public inventory.

Health concerns about lead exposure should be directed to your pediatrician or the CDC's lead guidance.

Next steps for residents

  • Contact your water utility and ask for your service line material. They may have it on file even if the public inventory is still being built.
  • Request a water test if you're concerned, especially if you have young children or a pregnant household member.
  • Check your utility's website for the LCRR inventory once it's published; it should list your address and line status.
  • Stay informed about your utility's lead replacement schedule—this often becomes public in 2025.

Related topics in Wisconsin

Common questions

Does Wisconsin have lead service lines?

Wisconsin reported 0 known lead service lines in its October 2024 LCRR inventory, though many systems are still assessing lines classified as unknown. Early reports don't mean lead isn't present—full inventories are required by 2027. Contact your utility directly to ask about your specific line.

How do I find out if my water line is lead in Wisconsin?

Call your local water utility and ask them directly about the material of your service line. You can also check your utility's LCRR inventory once it's published on their website. If records are incomplete, ask about testing your water or having a plumber inspect the line at your home.

What is Wisconsin doing to replace lead service lines?

All Wisconsin utilities must now develop replacement plans under the LCRR. Most will prioritize schools, childcare facilities, and vulnerable populations first. Check your utility's website or contact them for their timeline and whether you qualify for assistance.

Should I be worried about lead in Wisconsin tap water?

Lead risk depends on your home's age, your service line material, and your plumbing. Wisconsin's 0 reported lead lines is an early count; many systems are still completing assessments. If you're concerned about health impacts, especially for children, consult your pediatrician or the CDC.