LeadPipeLookup

Wisconsin › City overview

Lead service lines in Madison, WI

331 water utilities serve Madison, with approximately 347,732 people served.

Last verified from EPA SDWIS + utility inventories: 2026-04-14
Known lead
0
Galvanized
0
Unknown
0
% unknown
—

Lead Service Lines in Madison, WI

Madison's water system serves 347,732 people across 331 water utilities in the area. The largest is Madison Water Utility, which supplies about 272,000 residents.

What We Know About Lead Service Lines Here

Currently, there are no confirmed lead service lines reported in Madison's public water system data. This doesn't mean lead pipes don't exist—it means the utilities serving Madison haven't yet completed full inventories or reported findings to the state.

Wisconsin requires all water utilities to complete lead service line inventories by October 2024 and provide maps to the public. If your utility hasn't published this information yet, it's likely still being compiled.

Why Lead Service Lines Matter

A lead service line is the pipe connecting your home to the water main under the street. Even if your home's interior plumbing is safe, a lead service line can leach lead into your drinking water—especially in homes built before 1950.

Lead exposure, particularly in young children, can affect learning, behavior, and development. There is no safe level of lead in drinking water. If you have young children or are pregnant, this is worth taking seriously.

What You Can Do Now

Check your home's age and pipe material. Homes built before 1950 are more likely to have lead service lines. You can ask a plumber to inspect your water line, or contact your water utility—they may have records.

Request your utility's lead inventory. Madison Water Utility and other systems serving the area are required to share this information. Ask specifically whether your address has a known or suspected lead service line.

Test your water if concerned. A simple lead test costs $10–50. Contact your local health department or Madison Water Utility for approved labs.

Use point-of-use filters if needed. NSF-certified filters marked for lead reduction can help while you investigate further. This is a temporary measure, not a permanent fix.

Next Steps for Residents

  • Contact Madison Water Utility (or your specific utility) and ask for your service line status
  • Request a water test if your home was built before 1950
  • If a lead service line is confirmed, ask about replacement programs and funding options
  • Consult your pediatrician if you have young children in the home

Utilities serving Madison

Common questions

Does Madison have lead in the water?

No confirmed lead service lines are reported in Madison's current public data. However, water systems are still completing required inventories. Contact Madison Water Utility directly to learn whether your specific address has a lead service line.

How do I know if my house has a lead service line?

Homes built before 1950 are more likely to have them. You can ask your water utility for records, hire a plumber to inspect, or request the utility's lead inventory map. Madison Water Utility should have this information available.

Is it safe to drink tap water in Madison?

Madison's tap water is regularly tested and meets federal safety standards. However, if your home has a lead service line, lead can still enter your water. Request your service line status from your utility and consider a water test if you're concerned.

What do I do if my house has a lead service line?

Replacement is the permanent solution, though it's expensive. Ask your utility about lead line replacement programs and funding. In the meantime, flushing lines regularly and using NSF-certified filters can reduce exposure.