All water systems in Illinois
5,097 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Alpha Alpha · Henry County |
626 | 0 | 0 | |
|
Ursa Ursa · Adams County |
626 | 0 | 0 | |
|
IL American-Clarendon DuPage County |
625 | 2 | 0 | |
|
Keyesport Keyesport · Clinton County |
625 | 2 | 0 | |
|
Wayne School DuPage County |
625 | 4 | 0 | |
|
Beach MHP Zion · Lake County |
624 | 1 | 0 | |
|
Golden Golden · Adams County |
620 | 0 | 0 | |
|
Lenzburg Lenzburg · St. Clair County |
616 | 1 | 0 | |
|
Hutsonville Hutsonville · Crawford County |
613 | 3 | 1 | |
|
New Boston New Boston · Mercer County |
613 | 1 | 1 | |
|
Liberty Liberty · Adams County |
609 | 0 | 0 | |
|
IL American-Coventry Hill Winnebago County |
608 | 0 | 0 | |
|
Palmyra Palmyra · Macoupin County |
605 | 2 | 0 | |
|
Raleigh Water District Raleigh · Saline County |
605 | 1 | 0 | |
|
Kilbuck Creek Retreat Ogle County |
604 | 2 | 1 | |
|
Bedford Park Bedford Park · Cook County |
602 | 0 | 0 | |
|
Damiansville Damiansville · Clinton County |
602 | 6 | 2 | |
|
Baker Koren Round Barn Will County |
600 | 2 | 0 | |
|
Cat Mapleton /mapleton Peoria County |
600 | 0 | 0 | |
|
Cbre West Plaza Cook County |
600 | 1 | 0 | |
|
Constellation Byron Generating Station Ogle County |
600 | 0 | 0 | |
|
Crossroads Methodist Church, INC Tazewell County |
600 | 0 | 0 | |
|
Equistar Chemicals LP Grundy County |
600 | 2 | 1 | |
|
Fratellos Hot Dogs Lake County |
600 | 0 | 0 | |
|
Glenwood RV Resort LaSalle County |
600 | 3 | 1 | |
|
Harisumiran-Hindu Swaminarayan Temple Lake County |
600 | 0 | 0 | |
|
Harvest Baptist Church Well 3 Kendall County |
600 | 3 | 1 | |
|
IL American-Northern Hill Stephenson County |
600 | 0 | 0 | |
|
Indian Knoll School Dist 33 DuPage County |
600 | 3 | 0 | |
|
Isle a la Cache Museum Will County |
600 | 0 | 0 | |
|
Kildeer Countryside School Lake County |
600 | 5 | 0 | |
|
Long Grove Community Church Lake County |
600 | 0 | 0 | |
|
Love's Travel Stop/ Arby's Lake County |
600 | 0 | 0 | |
|
Northwestern Medicine McHenry Hospital McHenry County |
600 | 0 | 0 | |
|
Shanty Restaurant Lake County |
600 | 0 | 0 | |
|
ST Raphael Church Lake County |
600 | 0 | 0 | |
|
Stanford Stanford · McLean County |
600 | 0 | 0 | |
|
Thomson Thomson · Carroll County |
600 | 1 | 1 | |
|
Thorton Oil 351 Tazewell County |
600 | 0 | 0 | |
|
Three Rivers Church Will County |
600 | 1 | 0 | |
|
Union-York Water District Clark County |
600 | 3 | 1 | |
|
Wal-Mart Supercenter 2491 Vermilion County |
600 | 0 | 0 | |
|
Silver Glen Homeowner's Association South Elgin · Kane County |
595 | 0 | 0 | |
|
Union Union · McHenry County |
594 | 2 | 1 | |
|
West Shore Park Subdivision Lake County |
590 | 2 | 1 | |
|
Davis Davis · Stephenson County |
589 | 0 | 0 | |
|
Fairview Fairview · Fulton County |
588 | 2 | 0 | |
|
ST Francisville Saint Francisville · Lawrence County |
583 | 7 | 0 | |
|
Valley View Estates O Fallon · St. Clair County |
580 | 2 | 0 | |
|
Hopkins Park Pembroke · Kankakee County |
579 | 4 | 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 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.