All water systems in Illinois
5,097 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Dixon Correctional Center Lee County |
1,038 | 0 | 0 | |
|
Illiopolis Illiopolis · Sangamon County |
1,037 | 3 | 0 | |
|
Marine Marine · Madison County |
1,037 | 1 | 1 | |
|
Lincoln Correctional Center Logan County |
1,036 | 0 | 0 | |
|
Washburn Washburn · Woodford County |
1,032 | 2 | 2 | |
|
Buncombe Water District Jackson County |
1,030 | 5 | 1 | |
|
Wamac Wamac · Marion County |
1,030 | 0 | 0 | |
|
EJ Water-Sangchris New Berlin · Sangamon County |
1,025 | 4 | 1 | |
|
Lovington Lovington · Moultrie County |
1,024 | 0 | 0 | |
|
IL American-Lake Marian Kane County |
1,022 | 0 | 0 | |
|
Hoyleton Rwc Hoyleton · Washington County |
1,020 | 2 | 0 | |
|
Birds Pinkstaff Water District Lawrence County |
1,018 | 1 | 1 | |
|
Alto Pass Water District Union County |
1,015 | 0 | 0 | |
|
Hoffman Rural Water Company Carlyle · Clinton County |
1,015 | 1 | 0 | |
|
IL American-Country Club DuPage County |
1,014 | 0 | 0 | |
|
Odell Odell · Livingston County |
1,014 | 0 | 0 | |
|
Bannockburn Bannockburn · Lake County |
1,013 | 0 | 0 | |
|
Oakbrook Estates MHP McHenry County |
1,012 | 1 | 0 | |
|
Mounds Mounds · Pulaski County |
1,011 | 3 | 0 | |
|
Grand Bear Lodge Water Pk/jacks Place 6n LaSalle County |
1,005 | 0 | 0 | |
|
Pleasant Hill Pleasant Hill · Pike County |
1,004 | 4 | 0 | |
|
Central High School Kane County |
1,001 | 6 | 2 | |
|
Wildwood Estates LaSalle County |
1,001 | 0 | 0 | |
|
Alexian Brothers Medical Center Cook County |
1,000 | 0 | 0 | |
|
Alexian Brothers Medical Center & Rehab Cook County |
1,000 | 0 | 0 | |
|
Camden-Littleton Water Commission Schuyler County |
1,000 | 0 | 0 | |
|
Circle K #6739 Lake County |
1,000 | 0 | 0 | |
|
Constellation/lasalle Cnty Gen Station LaSalle County |
1,000 | 1 | 0 | |
|
IL Hwy 39 Willowcreek SB Rest Lee County |
1,000 | 0 | 0 | |
|
Illini Prairie Rest Areas Champaign County |
1,000 | 0 | 0 | |
|
Shell Minuteman Lake County |
1,000 | 0 | 0 | |
|
Walmart Kewanee Henry County |
1,000 | 0 | 0 | |
|
South Pekin South Pekin · Tazewell County |
996 | 3 | 1 | |
|
Mazon Mazon · Grundy County |
994 | 1 | 0 | |
|
Stateville Correctional Center Joliet · Will County |
992 | 5 | 2 | |
|
Colfax Colfax · McLean County |
989 | 1 | 1 | |
|
Milledgeville Milledgeville · Carroll County |
989 | 0 | 0 | |
|
Newark Newark · Kendall County |
986 | 0 | 0 | |
|
Energy Energy · Williamson County |
984 | 0 | 0 | |
|
Lockport Heights SD Lockport · Will County |
984 | 0 | 0 | |
|
Rest Area I74e Mackinaw Dells Woodford County |
980 | 0 | 0 | |
|
Rest Area I-74w Mackinaw Dells Woodford County |
975 | 1 | 0 | |
|
Raymond Raymond · Montgomery County |
974 | 0 | 0 | |
|
Wenona Wenona · Marshall County |
974 | 6 | 1 | |
|
Ridge Farm Ridge Farm · Vermilion County |
973 | 2 | 0 | |
|
Alpine Village MHP Lynwood · Cook County |
970 | 3 | 0 | |
|
Apple Creek Water Coop Morgan County |
968 | 3 | 0 | |
|
Ashton Ashton · Lee County |
967 | 1 | 0 | |
|
Ramsey Ramsey · Fayette County |
966 | 3 | 0 | |
|
Wataga Wataga · Knox County |
965 | 5 | 1 |
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.