Wisconsin · population 17,704
Lead pipes in Cudahy, WI
2,151 lead or galvanized lines to replace
Most of Cudahy (population 17,704) gets its water from Cudahy Waterworks. That system reported 2,151 lead and 0 galvanized-requiring-replacement service lines out of 5,446, with 1,729 more of unknown material.
39% of Cudahy Waterworks's service lines are lead or galvanized requiring replacement, higher than the Wisconsin average (11%) and higher than the national average (3.1%).
- Lead 39%
- Galvanized (replace) 0%
- Unknown 32%
- Non-lead 29%
Latest lead test for Cudahy Waterworks (Jul 2025–Dec 2025): 13 ppb at the 90th percentile, against a 15 ppb federal action level. Full test history.
Compliance record: EPA lists no Lead and Copper Rule violations since 2015 for Cudahy Waterworks.
Water systems serving Cudahy
| Water system | Lead | Galv. | Unknown | % lead |
|---|---|---|---|---|
| Cudahy WaterworksMain system | 2,151 | 0 | 1,729 | 39% |
| South Milwaukee WaterworksServes nearby areas | 585 | 6 | 3,254 | 9.0% |
Matched from EPA water system service area boundaries and the cities each system reports serving. Edges of the city may be served by a neighboring system; your water bill names your utility.
Check your address in Cudahy
The counts above cover the whole water system. To see whether your line is lead, look up your address on Cudahy Waterworks's official inventory. Utilities had to make these public by October 16, 2024.
No map yet? Do the 2-minute scratch and magnet test.
Protect your drinking water
If your line is lead, galvanized or unknown, use a filter certified to NSF/ANSI 53 for lead for drinking, cooking and baby formula, and use only cold water.
Choosing a lead-certified filter · Testing your water · Replacement cost
Nearby cities
- St. Francis2,151 lead + galv. lines
- South Milwaukee591 lead + galv. lines
- Oak Creekno lead reported
- Greendaleno lead reported
- West Milwaukee65,331 lead + galv. lines
- Greenfieldno lead reported
- West Allis7,719 lead + galv. lines
- Milwaukee65,331 lead + galv. lines
Check another water system
Questions
Does Cudahy, WI have lead pipes?
Yes. Cudahy Waterworks, which serves Cudahy, reported 2,151 lead and 0 galvanized-requiring-replacement service lines, plus 1,729 of unknown material.
Who supplies water to Cudahy?
EPA's service area maps place most of Cudahy in Cudahy Waterworks's service area (PWSID WI2410169). South Milwaukee Waterworks also serves parts of the city or nearby areas.
How do I check whether my Cudahy home has a lead service line?
Search your address on Cudahy Waterworks's service line inventory map. You can also scratch the pipe where water enters your home: lead is soft, dull gray, scratches to shiny silver and doesn't attract a magnet.
When will lead pipes in Cudahy be replaced?
EPA's Lead and Copper Rule Improvements require most systems to replace lead and galvanized-requiring-replacement lines by December 31, 2037. Ask Cudahy Waterworks whether your street is scheduled and whether it covers the private side.