Lead and Copper Rule Revisions (LCRR) violations in Illinois
113 active public water systems in Illinois had a Lead and Copper Rule Revisions (LCRR) violation in the past three years, 113 of them in the latest quarter of EPA's data. What Lead and Copper Rule Revisions (LCRR) is and why it matters.
Systems with a Lead and Copper Rule Revisions (LCRR) violation
Latest quarter first, then largest first| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Calumet City Calumet City · Cook County |
37,000 | 4 | 1 | |
|
Oak Forest Oak Forest · Cook County |
27,478 | 2 | 1 | |
|
Westchester Westchester · Cook County |
16,241 | 2 | 0 | |
|
U of I-Champaign Urbana · Champaign County |
13,000 | 2 | 2 | |
|
Summit Summit · Cook County |
11,161 | 3 | 3 | |
|
Lyons Lyons · Cook County |
10,304 | 1 | 1 | |
|
Murphysboro Murphysboro · Jackson County |
10,241 | 3 | 1 | |
|
Paris Paris · Edgar County |
9,100 | 1 | 1 | |
|
Willowbrook Willowbrook · DuPage County |
9,000 | 3 | 2 | |
|
Harrisburg Harrisburg · Saline County |
8,524 | 6 | 1 | |
|
Broadview Broadview · Cook County |
7,847 | 4 | 3 | |
|
Duquoin Du Quoin · Perry County |
7,169 | 6 | 2 | |
|
Coal City Coal City · Grundy County |
5,845 | 4 | 2 | |
|
Marseilles Marseilles · LaSalle County |
5,061 | 4 | 3 | |
|
Milan Milan · Rock Island County |
4,945 | 3 | 1 | |
|
Olympia Fields Olympia Fields · Cook County |
4,922 | 3 | 1 | |
|
Round Lake Park Round Lake Park · Lake County |
4,900 | 4 | 1 | |
|
Eldorado Eldorado · Saline County |
4,715 | 1 | 1 | |
|
Stone Park Stone Park · Cook County |
4,576 | 1 | 1 | |
|
Lawrenceville Lawrenceville · Lawrence County |
4,524 | 7 | 2 | |
|
Sparta Sparta · Randolph County |
4,395 | 4 | 2 | |
|
Burnham Burnham · Cook County |
3,989 | 7 | 3 | |
|
Gillespie Macoupin County |
3,737 | 8 | 3 | |
|
LE Roy Le Roy · McLean County |
3,498 | 4 | 2 | |
|
Carlyle Carlyle · Clinton County |
3,373 | 4 | 1 | |
|
Savanna Savanna · Carroll County |
3,020 | 2 | 1 | |
|
Dixmoor Dixmoor · Cook County |
2,973 | 5 | 4 | |
|
Mission Brook SD Cook County |
2,852 | 1 | 0 | |
|
McLeansboro Mcleansboro · Hamilton County |
2,812 | 5 | 4 | |
|
Central Stickney SD Cook County |
2,400 | 3 | 0 | |
|
Catlin Catlin · Vermilion County |
2,380 | 4 | 2 | |
|
ST Jacob Saint Jacob · Madison County |
2,008 | 4 | 1 | |
|
Southeast Joliet SD Joliet · Will County |
2,000 | 8 | 3 | |
|
Phoenix Phoenix · Cook County |
1,994 | 4 | 2 | |
|
Ford Heights East Chicago Heights · Cook County |
1,813 | 4 | 3 | |
|
Zeigler Zeigler · Franklin County |
1,774 | 1 | 1 | |
|
Grantfork Grantfork · Madison County |
1,766 | 5 | 2 | |
|
ST Rose Pwd Clinton County |
1,688 | 6 | 3 | |
|
Port Byron Port Byron · Rock Island County |
1,668 | 4 | 4 | |
|
Eaton Pwd Crawford County |
1,655 | 4 | 3 | |
|
Maple Park Maple Park · Kane County |
1,484 | 6 | 1 | |
|
Green Oaks Green Oaks · Lake County |
1,470 | 3 | 0 | |
|
Silvis Heights Water Corp Rock Island County |
1,450 | 7 | 3 | |
|
Hilltop MHP Bloomington · McLean County |
1,360 | 7 | 2 | |
|
East Moreland Wtr Service Assn New Lenox · Will County |
1,320 | 4 | 3 | |
|
Barry Barry · Pike County |
1,318 | 2 | 1 | |
|
Blue Mound Blue Mound · Macon County |
1,300 | 5 | 3 | |
|
Mound Pwd St. Clair County |
1,243 | 4 | 3 | |
|
Warrensburg Warrensburg · Macon County |
1,230 | 3 | 2 | |
|
Chatsworth Chatsworth · Livingston County |
1,200 | 3 | 1 |
About this data
A system is counted once if any of its violations in the past three years involved Lead and Copper Rule Revisions (LCRR), including monitoring and reporting lapses. Rules violated and status in the table are for the whole system, not Lead and Copper Rule Revisions (LCRR) alone.
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.