All water systems in Illinois
7 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Mercer County Ash Subd WE Mercer County · Mercer County |
28 | 0 | 0 | |
|
Mercer County SW Ashland Mercer County · Mercer County |
28 | 0 | 0 | |
|
Mercer CO Airport Mercer County |
25 | 0 | 0 | |
|
Mercer CO Airport Mercer County |
25 | 0 | 0 | |
|
Mercer CO Highway Garage Mercer County |
25 | 0 | 0 | |
|
Mercer CO Highway Garage Mercer County |
25 | 0 | 0 | |
|
Mercer Market Aledo Mercer County |
25 | 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.