All water systems in Illinois
115 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Willo-B Sports Bureau County |
25 | 0 | 0 | |
|
Willow Creek Presbyterian Chur Winnebago County |
25 | 0 | 0 | |
|
Willow Creek Resort Winnebago County |
25 | 0 | 0 | |
|
Willow Edge Tap McHenry County |
25 | 0 | 0 | |
|
Willow Edge Tap McHenry County |
25 | 0 | 0 | |
|
Willow Motel Kendall County |
25 | 0 | 0 | |
|
Willow Springs Woods 5229 Cook County |
25 | 0 | 0 | |
|
Willow Springs Woods 5229 Cook County |
25 | 0 | 0 | |
|
Willow Way Terrace Willow Way Terr · Cook County |
25 | 0 | 0 | |
|
Willowbrook DuPage County |
25 | 0 | 0 | |
|
Willowbrook Texaco DuPage County |
25 | 0 | 0 | |
|
Willowbrook Texaco DuPage County |
25 | 0 | 0 | |
|
Willows McHenry County |
25 | 0 | 0 | |
|
Old Willow Club Cook County |
0 | 0 | 0 | |
|
Will County Forest Preserve (148668) Will County |
0 | 0 | 0 |
About this data
Rules violated counts the rules a system was in violation of in the past three years, including monitoring and reporting lapses; one rule can carry several violations. Unresolved is the number of those rules currently in violation at EPA's latest data refresh.
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.