Illinois · population 27,443
Lead pipes in Wilmette, IL
2,125 lead or galvanized lines to replace
Most of Wilmette (population 27,443) gets its water from Wilmette. That system reported 1,936 lead and 189 galvanized-requiring-replacement service lines out of 8,868, with 219 more of unknown material.
24% of Wilmette's service lines are lead or galvanized requiring replacement, higher than the Illinois average (17%) and higher than the national average (3.1%).
- Lead 22%
- Galvanized (replace) 2.1%
- Unknown 2.5%
- Non-lead 74%
Latest lead test for Wilmette (2026): 6 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 Wilmette.
Water systems serving Wilmette
| Water system | Lead | Galv. | Unknown | % lead |
|---|---|---|---|---|
| WilmetteMain system | 1,936 | 189 | 219 | 24% |
| KenilworthServes nearby areas | 245 | 0 | 0 | 28% |
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 Wilmette
The counts above cover the whole water system. To see whether your line is lead, look up your address on Wilmette'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
- Kenilworth245 lead + galv. lines
- Winnetka1,083 lead + galv. lines
- Evanston9,468 lead + galv. lines
- Skokie6,349 lead + galv. lines
- Northfield85 lead + galv. lines
- Morton Grove3,108 lead + galv. lines
- Glencoe528 lead + galv. lines
- Lincolnwood1,097 lead + galv. lines
Check another water system
Questions
Does Wilmette, IL have lead pipes?
Yes. Wilmette, which serves Wilmette, reported 1,936 lead and 189 galvanized-requiring-replacement service lines, plus 219 of unknown material.
Who supplies water to Wilmette?
EPA's service area maps place most of Wilmette in Wilmette's service area (PWSID IL0313300). Kenilworth also serves parts of the city or nearby areas.
How do I check whether my Wilmette home has a lead service line?
Search your address on Wilmette'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 Wilmette 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 Wilmette whether your street is scheduled and whether it covers the private side.