All water systems in Missouri
2,835 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
ST Charles CO Pwsd #2 Wright City Wright City · Warren County |
3,550 | 1 | 0 | |
|
Bonne Terre PWS Bonne Terre · St. Francois County |
3,537 | 1 | 0 | |
|
Carrollton PWS Carrollton · Carroll County |
3,514 | 2 | 0 | |
|
Bonne Terre Prison St. Francois County |
3,500 | 1 | 0 | |
|
Farmington Correctional Center Farmington · St. Francois County |
3,500 | 5 | 2 | |
|
Franklin County Pwsd 1 Washington · Franklin County |
3,500 | 1 | 0 | |
|
Sugar Creek PWS Sugar Creek · Jackson County |
3,500 | 1 | 0 | |
|
Clay County Pwsd 2 Liberty · Clay County |
3,485 | 2 | 1 | |
|
Schuyler County Consolidated Pwsd 1 Queen City · Schuyler County |
3,482 | 1 | 0 | |
|
Buffalo PWS Buffalo · Dallas County |
3,462 | 0 | 0 | |
|
Clay County Pwsd 3 Holt · Clay County |
3,447 | 0 | 0 | |
|
Jasper County Pwsd 2 Webb City · Jasper County |
3,383 | 1 | 0 | |
|
Scotland County Cons Pwsd 1 Memphis · Scotland County |
3,360 | 0 | 0 | |
|
Texas County Pwsd 1 Success · Texas County |
3,335 | 2 | 0 | |
|
Jefferson County Pwsd 12 Jefferson County |
3,300 | 0 | 0 | |
|
Shelby County Pwsd 1 Shelbyville · Shelby County |
3,300 | 0 | 0 | |
|
Bethany PWS Bethany · Harrison County |
3,292 | 2 | 0 | |
|
Cuba PWS Cuba · Crawford County |
3,292 | 2 | 0 | |
|
Cassville PWS Cassville · Barry County |
3,290 | 0 | 0 | |
|
New Madrid PWS New Madrid · New Madrid County |
3,250 | 2 | 0 | |
|
Louisiana PWS Louisiana · Pike County |
3,244 | 7 | 0 | |
|
Cass County Pwsd 3 Raymore · Cass County |
3,225 | 0 | 0 | |
|
Canton PWS Canton · Lewis County |
3,200 | 0 | 0 | |
|
Mercer County Pwsd 1 Mercer · Harrison County |
3,200 | 2 | 0 | |
|
Portageville PWS Portageville · New Madrid County |
3,200 | 3 | 0 | |
|
Six Flags ST Louis St. Louis County |
3,200 | 0 | 0 | |
|
Terre DU Lac St. Francois County |
3,200 | 3 | 3 | |
|
Scott County Pwsd 4 Scott County |
3,150 | 2 | 0 | |
|
Vandalia PWS Vandalia · Audrain County |
3,140 | 1 | 0 | |
|
Osage Beach Premium Outlets Camden County |
3,100 | 2 | 0 | |
|
Buckner PWS Buckner · Jackson County |
3,076 | 2 | 0 | |
|
Cass County Pwsd 10 Peculiar · Cass County |
3,068 | 1 | 0 | |
|
Carroll County Pwsd 1 Carrollton · Carroll County |
3,063 | 3 | 1 | |
|
Chaffee PWS Chaffee · Scott County |
3,054 | 2 | 0 | |
|
Ava PWS Ava · Douglas County |
3,000 | 2 | 0 | |
|
Hillsboro PWS Hillsboro · Jefferson County |
3,000 | 2 | 0 | |
|
Mississippi County Pwsd 1 Mississippi County |
3,000 | 6 | 3 | |
|
Saline County Pwsd 3 Marshall · Saline County |
3,000 | 3 | 1 | |
|
Stoddard County Pwsd 1 Dexter · Stoddard County |
3,000 | 1 | 0 | |
|
Henry County Pwsd 3 Calhoun, Tightwad · Henry County |
2,993 | 0 | 0 | |
|
Lathrop PWS Lathrop · Clinton County |
2,945 | 1 | 0 | |
|
Cape Girardeau County Pwsd 2 Cape Girardeau · Cape Girardeau County |
2,913 | 1 | 0 | |
|
Dunklin County Pwsd 2 Senath · Dunklin County |
2,900 | 2 | 0 | |
|
Nixa PWS Rde Nixa · Christian County |
2,900 | 3 | 0 | |
|
Windsor PWS Windsor · Henry County |
2,900 | 2 | 1 | |
|
Cass County Pwsd 5 Pleasant Hill · Cass County |
2,875 | 0 | 0 | |
|
Knob Noster PWS Knob Noster · Johnson County |
2,863 | 0 | 0 | |
|
Tipton PWS Tipton · Moniteau County |
2,861 | 1 | 1 | |
|
Montgomery City PWS Montgomery City · Montgomery County |
2,811 | 0 | 0 | |
|
Fayette PWS Fayette · Howard County |
2,800 | 1 | 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 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. Retrieved from ECHO on Oct 11, 2026.