Water quality in Willowbrook, Illinois
Willowbrook is in DuPage County. 208 active public water systems serve the county; 46 had an EPA violation in the past three years.
Most likely your provider
Your location is within the outer bounds of this system's EPA service area.
Other community water systems in DuPage County
47 systems, nearest first| System | Serves | Status | Rules violated, 3 yr | Distance |
|---|---|---|---|---|
| IL American-Clarendon |
625 | 2 | 1.5 mi | |
| Burr Ridge Burr Ridge |
11,192 | 1 | 1.9 mi | |
| Darien Darien |
21,751 | 1 | 2.3 mi | |
| Clarendon Hills Clarendon Hills |
8,702 | 1 | 2.3 mi | |
| Southeast Regional Water Facility |
6,940 | 1 | 2.3 mi | |
| Westmont Westmont |
24,161 | 0 | 2.6 mi | |
| Hinsdale Hinsdale |
17,900 | 1 | 2.7 mi | |
| Liberty Park Homeowners Association |
950 | 3 | 3.8 mi | |
| Downers Grove Downers Grove |
49,425 | 0 | 4.1 mi | |
| Oak Brook Oak Brook |
9,400 | 3 | 5.0 mi | |
| Woodridge Woodridge |
33,566 | 1 | 5.3 mi | |
| York Township Water System Oak Brook Terr |
1,423 | 1 | 6.0 mi | |
| Aqua Illinois-Oak Brook Oak Brook |
5,361 | 0 | 6.0 mi | |
| Oakbrook Terrace Oak Brook Terr |
1,440 | 0 | 6.2 mi | |
| IL American-Dupage Utility |
6,613 | 0 | 6.6 mi | |
| Lisle Lisle |
24,223 | 1 | 7.4 mi | |
| IL American-Valley View |
6,721 | 0 | 7.5 mi | |
| DU Page Water Commission |
1 | 0 | 7.7 mi | |
| Lombard Lombard |
44,476 | 2 | 8.3 mi | |
| Villa Park Villa Park |
22,263 | 0 | 8.4 mi | |
| Steeple Run Sbdv |
1,931 | 1 | 8.6 mi | |
| Elmhurst Elmhurst |
45,000 | 0 | 9.1 mi | |
| Glen Ellyn Glen Ellyn |
28,500 | 1 | 9.3 mi | |
| IL American-Lombard Heights Lombard |
679 | 0 | 10.0 mi | |
| Wheaton Wheaton |
53,970 | 1 | 10.6 mi |
Non-community systems in DuPage County (160: schools, campgrounds, workplaces, restaurants)
These systems serve places you visit rather than homes.
About this data
Water systems are matched to DuPage County, nearest to Willowbrook first. Your exact provider depends on your address and connection; the largest community water system in a county is usually the city or town utility. Distances are measured to the centre of the service area EPA publishes for the system.
Town locations and ZIP code areas come from U.S. Census Bureau 2020 files.
Source: the U.S. EPA's Enforcement and Compliance History Online system (ECHO), which publishes the federal Safe Drinking Water Information System. EPA's terms and values are shown as published. The Illinois records are from EPA's data refresh of Oct 7, 2026; EPA refreshes this data quarterly, and states report to EPA with a lag of three to six months, so the newest violations may not appear yet. Retrieved from ECHO on Oct 11, 2026.