All water systems in Illinois
5,097 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Old Willow Complex Cook County |
520 | 0 | 0 | |
|
Constellation Clinton Power Station De Witt County |
515 | 5 | 0 | |
|
Grand Ridge Grand Ridge · LaSalle County |
515 | 1 | 0 | |
|
Wapella Wapella · De Witt County |
513 | 0 | 0 | |
|
Iuka Iuka · Marion County |
512 | 0 | 0 | |
|
Tovey Tovey · Christian County |
512 | 0 | 0 | |
|
Prairie View Elementary School Kane County |
508 | 6 | 1 | |
|
Reynolds Reynolds · Rock Island County |
508 | 0 | 0 | |
|
Citgo Dunkin Donuts Prospect Heights Cook County |
507 | 2 | 0 | |
|
South Bluff MHP South Beloit · Winnebago County |
507 | 1 | 0 | |
|
Colp Colp · Williamson County |
506 | 2 | 0 | |
|
Franciscan Sisters of Chicago Lemont · Cook County |
505 | 1 | 1 | |
|
7 Eleven Mercer County |
504 | 0 | 0 | |
|
Shoreline Trc MHP Lake County |
504 | 0 | 0 | |
|
Mississippi Manufactured Home Community East Moline · Rock Island County |
503 | 4 | 0 | |
|
Vienna Correctional Center Johnson County |
501 | 3 | 0 | |
|
325 S Route 31 LLC Kendall County |
500 | 3 | 2 | |
|
Alpine Chapel Lake County |
500 | 0 | 0 | |
|
Beecher City Beecher City · Effingham County |
500 | 6 | 1 | |
|
Biltmore C C Main Building Lake County |
500 | 6 | 1 | |
|
Buckley Buckley · Iroquois County |
500 | 0 | 0 | |
|
Citgo Petroleum Corporation Will County |
500 | 0 | 0 | |
|
Cornell Cornell · Livingston County |
500 | 0 | 0 | |
|
Dakota Dakota · Stephenson County |
500 | 0 | 0 | |
|
Decatur Mhp, LLC Decatur · Macon County |
500 | 3 | 1 | |
|
Dick Young Forest Preserve Kane County |
500 | 2 | 2 | |
|
Dunham Woods Riding Club Kane County |
500 | 3 | 1 | |
|
Dunkin Donuts Long Grove Lake County |
500 | 1 | 0 | |
|
East Moline Correctional Center East Moline · Rock Island County |
500 | 0 | 0 | |
|
Funks Grove Hwy Rest Area McLean County |
500 | 2 | 0 | |
|
Geneseo Hills Subdivision Henry County |
500 | 1 | 1 | |
|
Heritage of Rantoul Rantoul · Champaign County |
500 | 2 | 0 | |
|
I-39 Shell Express Winnebago County |
500 | 0 | 0 | |
|
I-57 Prairie View South Will County |
500 | 1 | 0 | |
|
Kankakee River ST Pk/pottawat Kankakee County |
500 | 0 | 0 | |
|
Lake Alexander RV Park Kankakee County |
500 | 1 | 1 | |
|
Lake Barrington Lake Barrington · Lake County |
500 | 0 | 0 | |
|
Lake Shannon Essex · Kankakee County |
500 | 5 | 0 | |
|
Lippold Park Con Softball Boncosky McHenry County |
500 | 0 | 0 | |
|
M and a Country Store Henry County |
500 | 0 | 0 | |
|
Marianjoy Rehab Hospital DuPage County |
500 | 3 | 0 | |
|
Mascoutin Sra De Witt County |
500 | 2 | 2 | |
|
Natural Pure Drinking Water at Capri Iga Bond County |
500 | 0 | 0 | |
|
North Boone High School Boone County |
500 | 6 | 2 | |
|
Randall Oaks Park Comm Shelter Kane County |
500 | 2 | 1 | |
|
Rankin Rankin · Vermilion County |
500 | 4 | 1 | |
|
Robert Allerton Park Piatt County |
500 | 0 | 0 | |
|
Rock Cut ST Pk-Beach Well Winnebago County |
500 | 1 | 0 | |
|
Sauk Valley College Lee County |
500 | 2 | 0 | |
|
Siegals Cottonwood Farms Will County |
500 | 1 | 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.