All water systems in Illinois
5,097 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Atlanta Atlanta · Logan County |
1,692 | 1 | 0 | |
|
ST Rose Pwd Clinton County |
1,688 | 6 | 3 | |
|
Sheridan Correctional Center LaSalle County |
1,670 | 2 | 2 | |
|
Port Byron Port Byron · Rock Island County |
1,668 | 4 | 4 | |
|
Pontiac Correctional Center Pontiac · Livingston County |
1,665 | 4 | 1 | |
|
Bement Bement · Piatt County |
1,661 | 3 | 1 | |
|
Eaton Pwd Crawford County |
1,655 | 4 | 3 | |
|
Kirkland Kirkland · DeKalb County |
1,650 | 0 | 0 | |
|
Pekin Fed Correctional Inst and Prsncmp Pekin · Tazewell County |
1,635 | 1 | 0 | |
|
Vienna Vienna · Johnson County |
1,618 | 0 | 0 | |
|
Shawnee Correctional Center Vienna · Johnson County |
1,617 | 2 | 0 | |
|
Earlville Earlville · LaSalle County |
1,613 | 0 | 0 | |
|
Grayville Grayville · White County |
1,613 | 3 | 1 | |
|
Benld Benld · Macoupin County |
1,612 | 2 | 1 | |
|
Dunlap Dunlap · Peoria County |
1,603 | 0 | 0 | |
|
Herscher Herscher · Kankakee County |
1,600 | 0 | 0 | |
|
IL American-Oakwood Oakwood · Vermilion County |
1,600 | 0 | 0 | |
|
Jerome Jerome · Sangamon County |
1,600 | 3 | 0 | |
|
Northwest Bible Baptist Church Kane County |
1,600 | 4 | 0 | |
|
Western IL Correctional Center Mount Sterling · Brown County |
1,600 | 0 | 0 | |
|
Hodgkins Hodgkins · Cook County |
1,597 | 2 | 1 | |
|
Winchester Winchester · Scott County |
1,589 | 1 | 0 | |
|
IL American-Arrowhead DuPage County |
1,581 | 0 | 0 | |
|
Fairfield Rural Waterworks--Jasper Fairfield · Wayne County |
1,578 | 2 | 0 | |
|
East Dubuque East Dubuque · Jo Daviess County |
1,565 | 1 | 0 | |
|
Lcpw Brooks Farm Subdivision Lake County |
1,563 | 0 | 0 | |
|
Kincaid Christian County |
1,561 | 2 | 2 | |
|
Manito Manito · Mason County |
1,552 | 0 | 0 | |
|
Fci-Marion Marion · Williamson County |
1,544 | 3 | 2 | |
|
Germantown Germantown · Clinton County |
1,537 | 5 | 1 | |
|
Pheasant Lake Estates MHP Peotone · Will County |
1,528 | 0 | 0 | |
|
Roxana Roxana · Madison County |
1,517 | 1 | 0 | |
|
Virginia Virginia · Cass County |
1,514 | 1 | 0 | |
|
Greenup Greenup · Cumberland County |
1,513 | 1 | 0 | |
|
Pleasant Plains Sangamon County |
1,508 | 2 | 0 | |
|
IL American-Mount Pulaski Logan County |
1,506 | 1 | 1 | |
|
Lanark Lanark · Carroll County |
1,504 | 2 | 0 | |
|
Clifton Clifton · Iroquois County |
1,500 | 1 | 0 | |
|
East Hazel Crest East Hazel Crest · Cook County |
1,500 | 1 | 0 | |
|
Logan Correctional Center Lincoln · Logan County |
1,500 | 0 | 0 | |
|
Waterman Waterman · DeKalb County |
1,497 | 0 | 0 | |
|
IL American-Westlake Loves Park · Winnebago County |
1,493 | 1 | 0 | |
|
Maple Park Maple Park · Kane County |
1,484 | 6 | 1 | |
|
Warsaw Warsaw · Hancock County |
1,480 | 2 | 0 | |
|
Erie Erie · Whiteside County |
1,479 | 3 | 2 | |
|
Mount Carroll Mount Carroll · Carroll County |
1,479 | 0 | 0 | |
|
North Pekin North Pekin · Tazewell County |
1,478 | 1 | 0 | |
|
Bethany Bethany · Moultrie County |
1,475 | 1 | 1 | |
|
Garden Home SD Cook County |
1,472 | 1 | 1 | |
|
Green Oaks Green Oaks · Lake County |
1,470 | 3 | 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.