Lead and Copper Rule Revisions (LCRR) violations in Missouri
285 active public water systems in Missouri had a Lead and Copper Rule Revisions (LCRR) violation in the past three years, 285 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 |
|---|---|---|---|---|
|
City of Columbia Utilities Boone County |
126,254 | 1 | 1 | |
|
Wentzville PWS Wentzville · St. Charles County |
41,784 | 1 | 1 | |
|
Liberty PWS Liberty · Clay County |
30,800 | 2 | 1 | |
|
Gladstone PWS Gladstone · Clay County |
27,000 | 1 | 0 | |
|
Sedalia PWS Sedalia · Pettis County |
21,725 | 4 | 2 | |
|
Rolla PWS Rolla · Phelps County |
20,800 | 1 | 0 | |
|
Grain Valley PWS Grain Valley · Jackson County |
16,000 | 1 | 1 | |
|
Moberly PWS Moberly · Randolph County |
13,783 | 1 | 1 | |
|
Branson PWS Branson · Taney County |
12,640 | 1 | 0 | |
|
Union PWS Union · Franklin County |
12,348 | 2 | 0 | |
|
Thomas Hill Pwsd 1 Moberly · Randolph County |
11,250 | 2 | 1 | |
|
Vernon County Cons Pwsd 1 Nevada · Vernon County |
9,615 | 2 | 0 | |
|
Barton Dade Cedar Jasp Countycons Pwsd 1 Barton County |
9,523 | 2 | 1 | |
|
Oak Grove PWS Oak Grove · Jackson County |
9,200 | 1 | 1 | |
|
Cape Perry County Pwsd 1 South Jackson · Cape Girardeau County |
8,545 | 3 | 0 | |
|
Willard PWS Willard · Greene County |
8,400 | 1 | 1 | |
|
Dexter PWS Dexter · Stoddard County |
8,200 | 1 | 0 | |
|
Nevada PWS Nevada · Vernon County |
8,198 | 1 | 1 | |
|
Carl Junction PWS Carl Junction · Jasper County |
8,142 | 2 | 0 | |
|
Jefferson County Pwsd 5 Jefferson County |
8,000 | 1 | 1 | |
|
Marshfield PWS Marshfield · Webster County |
7,425 | 1 | 0 | |
|
Platte County Cons Pwsd 1 Waldron · Platte County |
7,074 | 1 | 1 | |
|
Peculiar PWS Peculiar · Cass County |
6,226 | 2 | 1 | |
|
Pacific PWS Pacific · Franklin County |
6,000 | 4 | 1 | |
|
Trenton Municipal Utilities PWS Trenton · Grundy County |
5,600 | 2 | 1 | |
|
Caruthersville PWS Caruthersville · Pemiscot County |
5,518 | 4 | 1 | |
|
Taney County Pwsd 2 Powersite · Taney County |
5,500 | 1 | 1 | |
|
Waynesville PWS Waynesville · Pulaski County |
5,460 | 3 | 1 | |
|
Savannah PWS Savannah · Andrew County |
5,249 | 2 | 1 | |
|
Odessa PWS Odessa · Lafayette County |
5,202 | 1 | 1 | |
|
Herculaneum PWS Herculaneum · Jefferson County |
5,000 | 1 | 0 | |
|
Eldon PWS Eldon · Miller County |
4,895 | 4 | 2 | |
|
Mountain Grove PWS Mountain Grove · Wright County |
4,789 | 2 | 0 | |
|
Crystal City PWS Crystal City · Jefferson County |
4,733 | 1 | 1 | |
|
Jefferson CO Pwsd 8 Cedar Hill · Jefferson County |
4,733 | 1 | 1 | |
|
Scott City PWS Scott City · Scott County |
4,653 | 3 | 1 | |
|
Cass County Pwsd 2 Belton · Cass County |
4,650 | 1 | 0 | |
|
Mount Vernon PWS Mount Vernon · Lawrence County |
4,575 | 2 | 1 | |
|
Fredericktown PWS Fredericktown · Madison County |
4,429 | 2 | 1 | |
|
Camdenton PWS Camdenton · Camden County |
3,960 | 1 | 0 | |
|
Knox County Public Water & Sewer Dist 1 Knox City · Knox County |
3,947 | 4 | 2 | |
|
Malden PWS Malden · Dunklin County |
3,700 | 3 | 2 | |
|
Bonne Terre PWS Bonne Terre · St. Francois County |
3,537 | 1 | 0 | |
|
Bonne Terre Prison St. Francois County |
3,500 | 1 | 0 | |
|
Farmington Correctional Center Farmington · St. Francois County |
3,500 | 5 | 2 | |
|
Clay County Pwsd 2 Liberty · Clay County |
3,485 | 2 | 1 | |
|
Louisiana PWS Louisiana · Pike County |
3,244 | 7 | 0 | |
|
Carroll County Pwsd 1 Carrollton · Carroll County |
3,063 | 3 | 1 | |
|
Mississippi County Pwsd 1 Mississippi County |
3,000 | 6 | 3 | |
|
Tipton PWS Tipton · Moniteau County |
2,861 | 1 | 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 Missouri 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.