All water systems in Illinois
5,097 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Rapids City Cordova · Rock Island County |
962 | 3 | 1 | |
|
Percy Percy · Randolph County |
961 | 4 | 0 | |
|
Camp Duncan Pool Lake County |
960 | 4 | 2 | |
|
Camp Independence Lake County |
960 | 4 | 2 | |
|
Clay City Clay City · Clay County |
957 | 3 | 0 | |
|
Atkinson Atkinson · Henry County |
955 | 4 | 1 | |
|
Mendon Adams County |
953 | 0 | 0 | |
|
Leland Leland · LaSalle County |
951 | 0 | 0 | |
|
Concorde Banquets Lake County |
950 | 0 | 0 | |
|
Constellation Energy Generation LLC Rock Island County |
950 | 0 | 0 | |
|
FS Gas and Food Mart Inc. Lake County |
950 | 0 | 0 | |
|
Liberty Park Homeowners Association DuPage County |
950 | 3 | 1 | |
|
Fairfield Rural Waterworks--Boyleston Fairfield · Wayne County |
948 | 1 | 0 | |
|
Kinmundy Kinmundy · Marion County |
940 | 0 | 0 | |
|
Spring Lakes MHP Cook County |
940 | 1 | 0 | |
|
Mansfield Mansfield · Piatt County |
939 | 0 | 0 | |
|
Goodfield Goodfield · Woodford County |
936 | 0 | 0 | |
|
Stonington Stonington · Christian County |
932 | 0 | 0 | |
|
IL American-Apple Canyon Jo Daviess County |
931 | 0 | 0 | |
|
Mississippi Rapids Rest Area Rock Island County |
930 | 0 | 0 | |
|
Sumner Sumner · Lawrence County |
921 | 1 | 1 | |
|
Aqua Illinois-Moecherville Kane County |
920 | 0 | 0 | |
|
Avon Avon · Fulton County |
920 | 1 | 0 | |
|
Camp Henry Horner/pool Pump House Lake County |
920 | 3 | 2 | |
|
Willow Lake Estates MHP Elgin · Kane County |
920 | 6 | 0 | |
|
Olympia School McLean County |
918 | 7 | 0 | |
|
Roseville Roseville · Warren County |
915 | 0 | 0 | |
|
Beckemeyer Beckemeyer · Clinton County |
913 | 0 | 0 | |
|
Shabbona Shabbona · DeKalb County |
913 | 2 | 0 | |
|
Grand Valley Village MHP Springfield · Sangamon County |
912 | 4 | 1 | |
|
Shady Oaks MHP Grundy County |
912 | 3 | 0 | |
|
Gifford Gifford · Champaign County |
911 | 2 | 0 | |
|
McClure-East Cape Pwd Alexander County |
910 | 2 | 0 | |
|
Quentin Road Bible Baptist School Lake County |
910 | 2 | 1 | |
|
Argenta Argenta · Macon County |
900 | 4 | 1 | |
|
Baka Krisdala Rest Area E Bound Henry County |
900 | 0 | 0 | |
|
Baka Krisdala Rest Area W Bound Henry County |
900 | 0 | 0 | |
|
Bismarck Community Water District Vermilion County |
900 | 2 | 0 | |
|
Bloomington Township Pwd-Crestwicke Bloomington · McLean County |
900 | 1 | 0 | |
|
Dieterich Dieterich · Effingham County |
900 | 0 | 0 | |
|
Hillsdale Express Lane Rock Island County |
900 | 0 | 0 | |
|
IL Hwy 39 Willowcreek NB Rest Lee County |
900 | 0 | 0 | |
|
Sheldon Sheldon · Iroquois County |
900 | 2 | 1 | |
|
The Chapel (147876) Lake County |
900 | 1 | 0 | |
|
The Great Sauk Trail East Bureau County |
900 | 0 | 0 | |
|
Willoway Terrace MHP Cook County |
900 | 0 | 0 | |
|
Franklin Grove Franklin Grove · Lee County |
896 | 2 | 0 | |
|
Oreana Oreana · Macon County |
892 | 3 | 1 | |
|
Galatia Galatia · Saline County |
887 | 5 | 1 | |
|
Wyanet Wyanet · Bureau County |
886 | 2 | 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.