All water systems in Illinois
5,097 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Sawyerville Sawyerville · Macoupin County |
578 | 4 | 1 | |
|
Howard B Thomas Grade School Kane County |
575 | 5 | 1 | |
|
Johnsburg JR High School McHenry County |
575 | 2 | 0 | |
|
College View Subdivision Lockport · Will County |
570 | 2 | 1 | |
|
Blandinsville Blandinsville · McDonough County |
569 | 0 | 0 | |
|
Lake View MHP Lake County |
568 | 1 | 0 | |
|
Godley Public Water District Will County |
566 | 1 | 1 | |
|
Andover Andover · Henry County |
565 | 1 | 1 | |
|
Ashley Ashley · Washington County |
565 | 1 | 0 | |
|
Dhs Rushville Treatment and Detention Schuyler County |
565 | 1 | 0 | |
|
Elkhart Logan County |
565 | 4 | 0 | |
|
Cullom Cullom · Livingston County |
563 | 1 | 0 | |
|
Schram City Schram City · Montgomery County |
563 | 3 | 0 | |
|
Southwestern IL Correctional Center East St Louis · St. Clair County |
563 | 0 | 0 | |
|
West Liberty-Dundas Water District Richland County |
563 | 1 | 1 | |
|
Carlock Carlock · McLean County |
562 | 1 | 0 | |
|
Maxson Manor Ogle County |
562 | 0 | 0 | |
|
Gavin Central Elementary Lake County |
560 | 5 | 2 | |
|
High Cliff Estates Milan · Rock Island County |
560 | 2 | 0 | |
|
Oconnells-Conference Lee County |
560 | 0 | 0 | |
|
Spoon River Valley School Fulton County |
560 | 3 | 0 | |
|
Grand Tower Grand Tower · Jackson County |
559 | 0 | 0 | |
|
Sidell Sidell · Vermilion County |
557 | 1 | 0 | |
|
Mark Mark · Putnam County |
555 | 1 | 0 | |
|
Serena Community School LaSalle County |
555 | 3 | 0 | |
|
Augusta Augusta · Hancock County |
553 | 0 | 0 | |
|
Constellation Services & Training Center Will County |
550 | 0 | 0 | |
|
Danforth Danforth · Iroquois County |
550 | 1 | 1 | |
|
Northpoint Community Church Lake County |
550 | 0 | 0 | |
|
Mulberry Grove Mulberry Grove · Bond County |
548 | 0 | 0 | |
|
Baldwin Baldwin · Randolph County |
547 | 1 | 0 | |
|
Patoka Patoka · Marion County |
545 | 0 | 0 | |
|
Burt Estates MHC Diamond · Grundy County |
543 | 1 | 0 | |
|
Hill City Water District Franklin County |
543 | 0 | 0 | |
|
Stone Creek School Winnebago County |
543 | 4 | 0 | |
|
Xenia Xenia · Clay County |
542 | 1 | 0 | |
|
Shipman Shipman · Macoupin County |
541 | 2 | 0 | |
|
Dorchester Dorchester · Macoupin County |
540 | 2 | 0 | |
|
Farina Farina · Fayette County |
540 | 1 | 0 | |
|
Lyndon Lyndon · Whiteside County |
537 | 4 | 0 | |
|
Good Hope Good Hope · McDonough County |
536 | 0 | 0 | |
|
Wilsonville Wilsonville · Macoupin County |
536 | 3 | 1 | |
|
Burlington Burlington · Kane County |
535 | 2 | 1 | |
|
Caterpillar Peoria Proving Grd Tazewell County |
535 | 0 | 0 | |
|
Cowden Tower Hill · Shelby County |
534 | 1 | 1 | |
|
Choate MHC Anna · Union County |
533 | 3 | 2 | |
|
Mound City Mound City · Pulaski County |
526 | 0 | 0 | |
|
Cubby Bear North Lake County |
524 | 0 | 0 | |
|
Chadwick Chadwick · Carroll County |
523 | 2 | 1 | |
|
Jarrett Prairie Center Ogle County |
520 | 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.