Illinois · population 9,179
Lead pipes in Willowbrook, IL
1,516 lines still unidentified
Most of Willowbrook (population 9,179) gets its water from Willowbrook. It reported no confirmed lead service lines, but 1,516 of 2,271 lines are still listed as unknown material, so lead hasn't been ruled out.
0% of Willowbrook's service lines are lead or galvanized requiring replacement, lower than the Illinois average (17%) and lower than the national average (3.1%).
- Lead 0%
- Galvanized (replace) 0%
- Unknown 67%
- Non-lead 33%
Latest lead test for Willowbrook (2025): not detected at the 90th percentile, against a 15 ppb federal action level. Full test history.
Compliance record: EPA lists 1 Lead and Copper Rule violation since 2015 for Willowbrook.
Water systems serving Willowbrook
| Water system | Lead | Galv. | Unknown | % lead |
|---|---|---|---|---|
| WillowbrookMain system | 0 | 0 | 1,516 | 0% |
| DarienServes nearby areas | 0 | 0 | 1,407 | 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 Willowbrook
The counts above cover the whole water system. To see whether your line is lead, look up your address on Willowbrook'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
- Burr Ridgeno lead reported
- Clarendon Hills160 lead + galv. lines
- Indian Head Parkno lead reported
- Hinsdale183 lead + galv. lines
- Westmont245 lead + galv. lines
- Darien1,407 unknown
- Western Springs414 lead + galv. lines
- Willow Springsno lead reported
Check another water system
Questions
Does Willowbrook, IL have lead pipes?
None are confirmed, but Willowbrook still lists 1,516 service lines as unknown material.
Who supplies water to Willowbrook?
EPA's service area maps place most of Willowbrook in Willowbrook's service area (PWSID IL0431100). Darien also serves parts of the city or nearby areas.
How do I check whether my Willowbrook home has a lead service line?
Search your address on Willowbrook'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 Willowbrook 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 Willowbrook whether your street is scheduled and whether it covers the private side.