All water systems in Illinois
5,097 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
IL American-Waycinden Cook County |
1,934 | 0 | 0 | |
|
Glen Ellyn Heights Subdivision DuPage County |
1,931 | 4 | 1 | |
|
Steeple Run Sbdv DuPage County |
1,931 | 1 | 0 | |
|
Belle Rive Belle Rive · Jefferson County |
1,930 | 1 | 0 | |
|
Lexington Lexington · McLean County |
1,930 | 1 | 0 | |
|
Minonk Minonk · Woodford County |
1,928 | 0 | 0 | |
|
Marissa Marissa · St. Clair County |
1,921 | 2 | 1 | |
|
DE Soto De Soto · Jackson County |
1,910 | 1 | 0 | |
|
Princeville Princeville · Peoria County |
1,901 | 0 | 0 | |
|
Waltonville Waltonville · Jefferson County |
1,901 | 3 | 0 | |
|
Lacon Lacon · Marshall County |
1,900 | 0 | 0 | |
|
South Roxana South Roxana · Madison County |
1,891 | 6 | 1 | |
|
Aqua Illinois-Oak Run Knox County |
1,885 | 0 | 0 | |
|
Girard Girard · Macoupin County |
1,885 | 1 | 0 | |
|
Central Macoupin County Rwd Macoupin County |
1,883 | 3 | 0 | |
|
Bluford Bluford · Jefferson County |
1,880 | 1 | 0 | |
|
Poplar Grove South Poplar Grove · Boone County |
1,877 | 5 | 1 | |
|
Rural Wabash County Water District Wabash County |
1,877 | 0 | 0 | |
|
Hampton Hampton · Rock Island County |
1,863 | 1 | 1 | |
|
Prairie Dupont Pwd St. Clair County |
1,863 | 0 | 0 | |
|
Aqua Illinois-McHenry Shores McHenry County |
1,862 | 0 | 0 | |
|
Somonauk Somonauk · DeKalb County |
1,860 | 0 | 0 | |
|
Carlyle North Water Company, Inc. Clinton County |
1,850 | 0 | 0 | |
|
Hudson Hudson · McLean County |
1,847 | 2 | 0 | |
|
DE Pue De Pue · Bureau County |
1,838 | 1 | 0 | |
|
IL American-Cairo Cairo · Alexander County |
1,821 | 0 | 0 | |
|
Carlyle Southwest Pwd Carlyle · Clinton County |
1,815 | 1 | 0 | |
|
Ford Heights East Chicago Heights · Cook County |
1,813 | 4 | 3 | |
|
Farmer City Farmer City · De Witt County |
1,811 | 1 | 0 | |
|
Bloomington Township Pwd West Phase McLean County |
1,800 | 0 | 0 | |
|
Chenoa Chenoa · McLean County |
1,800 | 2 | 1 | |
|
Kaneland High School Kane County |
1,800 | 5 | 0 | |
|
Jonesboro Jonesboro · Union County |
1,799 | 1 | 0 | |
|
Gilman Gilman · Iroquois County |
1,793 | 3 | 1 | |
|
Moweaqua Moweaqua · Shelby County |
1,785 | 0 | 0 | |
|
Meadowbrook Pwd Madison County |
1,778 | 0 | 0 | |
|
Zeigler Zeigler · Franklin County |
1,774 | 1 | 1 | |
|
Big Muddy River CC Ina · Jefferson County |
1,771 | 0 | 0 | |
|
Grantfork Grantfork · Madison County |
1,766 | 5 | 2 | |
|
Central Alexander Cnty Pwd Alexander County |
1,763 | 2 | 1 | |
|
Aqua Illinois-Rockwell Lake County |
1,762 | 1 | 0 | |
|
Bunker Hill Bunker Hill · Macoupin County |
1,760 | 1 | 0 | |
|
Orion Orion · Henry County |
1,754 | 4 | 1 | |
|
Roodhouse Roodhouse · Greene County |
1,753 | 1 | 0 | |
|
Delavan Delavan · Tazewell County |
1,743 | 1 | 0 | |
|
Stockton Stockton · Jo Daviess County |
1,728 | 1 | 0 | |
|
Cambria Cambria · Williamson County |
1,727 | 1 | 0 | |
|
Crainville Crainville · Williamson County |
1,711 | 3 | 0 | |
|
Pierron Pierron · Madison County |
1,709 | 0 | 0 | |
|
Maroa Maroa · Macon County |
1,700 | 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 still 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. Retrieved from ECHO on Oct 11, 2026.