All water systems in Illinois
5,097 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Hecker Hecker · Monroe County |
429 | 5 | 2 | |
|
Sorento Sorento · Bond County |
429 | 4 | 3 | |
|
Aqua Illinois-Nordic Woods Ogle County |
425 | 0 | 0 | |
|
Bay View Baptist Church Tazewell County |
425 | 2 | 0 | |
|
Mount Morris Estates MHP Ogle County |
425 | 2 | 0 | |
|
Prairie City Prairie City · McDonough County |
425 | 0 | 0 | |
|
New Haven Omaha · Gallatin County |
424 | 0 | 0 | |
|
Candlelight Village MHP Cook County |
420 | 1 | 1 | |
|
Hopewell Marshall County |
420 | 1 | 1 | |
|
Oakwood Estates Springfield · Sangamon County |
420 | 2 | 0 | |
|
Ogden Gardens Subdivision Kane County |
420 | 4 | 0 | |
|
Arenzville Arenzville · Cass County |
419 | 1 | 0 | |
|
Campbell Hill Campbell Hill · Jackson County |
414 | 0 | 0 | |
|
Hilldale Manor Subdivision Lake County |
414 | 0 | 0 | |
|
Lcpw Highland Lake Subdivision Lake County |
414 | 0 | 0 | |
|
Midland High School Marshall County |
410 | 5 | 1 | |
|
White Oaks Estates Water Assoc., Inc. Lee County |
410 | 0 | 0 | |
|
Springbrook Community Church Will County |
406 | 0 | 0 | |
|
Des Plaines MHP Cook County |
405 | 2 | 1 | |
|
Weldon Weldon · De Witt County |
404 | 0 | 0 | |
|
Cass Rural Water District Cass County |
403 | 0 | 0 | |
|
Ellis Grove Ellis Grove · Randolph County |
403 | 2 | 0 | |
|
Leaf River Leaf River · Ogle County |
403 | 3 | 1 | |
|
Benson Benson · Woodford County |
401 | 2 | 0 | |
|
IL Veterans Home (quincy) Adams County |
401 | 0 | 0 | |
|
Algonquin Mobile Kane County |
400 | 1 | 1 | |
|
Allendale Association Lake County |
400 | 0 | 0 | |
|
Balmoral Heights Subdivision Crete · Will County |
400 | 0 | 0 | |
|
Blackberry Hill Congregation of JW Kendall County |
400 | 1 | 0 | |
|
Brunswick Deer Park Lanes Lake County |
400 | 0 | 0 | |
|
Christ Orchard Peoria County |
400 | 0 | 0 | |
|
Coghill Golf Courses #2&4 Cook County |
400 | 0 | 0 | |
|
ED Etnyre and Company Ogle County |
400 | 7 | 0 | |
|
Edwards Foodmart Peoria County |
400 | 1 | 0 | |
|
Express Lane Gas and Food Inc. Grundy County |
400 | 0 | 0 | |
|
Faith Christian Center Tazewell County |
400 | 0 | 0 | |
|
Goodenow Grove Forest Preserve Will County |
400 | 0 | 0 | |
|
Grace Christian Academy Kankakee County |
400 | 1 | 0 | |
|
Greenwood School McHenry County |
400 | 1 | 0 | |
|
Harvest Baptist Church Well 2 Kendall County |
400 | 2 | 0 | |
|
Hinckley-Big Rock Middle School Kane County |
400 | 5 | 0 | |
|
Hobson Valley Water System DuPage County |
400 | 0 | 0 | |
|
Illinois Turner Camp Pool McHenry County |
400 | 0 | 0 | |
|
Insight Hospital and Medical Center Chic Cook County |
400 | 1 | 0 | |
|
Kenney Kenney · De Witt County |
400 | 1 | 1 | |
|
Lindenhurst Clark Lake County |
400 | 0 | 0 | |
|
London Mills London Mills · Fulton County |
400 | 0 | 0 | |
|
Millburn School Lake County |
400 | 1 | 0 | |
|
Peoria Skeet & Trap Club Woodford County |
400 | 0 | 0 | |
|
Phillips 66 Wadsworth Lake County |
400 | 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 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.