All water systems in Missouri
2,835 systems
| System | Serves | Status | Rules violated, 3 yr | Unresolved |
|---|---|---|---|---|
|
Carthage PWS Carthage · Jasper County |
14,600 | 0 | 0 | |
|
Washington PWS Washington · Franklin County |
14,068 | 4 | 0 | |
|
Lincoln County Pwsd 1 Lincoln County |
14,000 | 1 | 0 | |
|
Moberly PWS Moberly · Randolph County |
13,783 | 1 | 1 | |
|
Webb City PWS Webb City · Jasper County |
13,404 | 1 | 0 | |
|
Cole County Pwsd 2 Jefferson City · Cole County |
13,107 | 1 | 1 | |
|
Callaway 2 Water District Fulton · Callaway County |
13,080 | 0 | 0 | |
|
Festus PWS Festus · Jefferson County |
13,000 | 0 | 0 | |
|
MO American Mexico Mexico · Audrain County |
13,000 | 0 | 0 | |
|
Marshall PWS Marshall · Saline County |
12,934 | 0 | 0 | |
|
Macon CO Pwsd 1 Macon · Macon County |
12,865 | 0 | 0 | |
|
West Plains PWS West Plains · Howell County |
12,864 | 1 | 0 | |
|
Branson PWS Branson · Taney County |
12,640 | 1 | 0 | |
|
Fulton PWS Fulton · Callaway County |
12,600 | 1 | 0 | |
|
Johnson County Pwsd 2 Holden · Johnson County |
12,490 | 0 | 0 | |
|
Union PWS Union · Franklin County |
12,348 | 2 | 0 | |
|
Neosho PWS Neosho · Newton County |
12,157 | 3 | 0 | |
|
Butler County Pwsd 1 Butler County |
12,000 | 0 | 0 | |
|
Cameron PWS Cameron · Clinton County |
11,963 | 0 | 0 | |
|
Kearney PWS Kearney · Clay County |
11,500 | 0 | 0 | |
|
Henry County Water Company Clinton · Henry County |
11,373 | 0 | 0 | |
|
Thomas Hill Pwsd 1 Moberly · Randolph County |
11,250 | 2 | 1 | |
|
Excelsior Springs PWS Excelsior Spgs. · Clay County |
11,084 | 1 | 0 | |
|
Liberty Utilities Bolivar Bolivar · Polk County |
11,000 | 1 | 0 | |
|
Smithville PWS Smithville · Clay County |
10,885 | 0 | 0 | |
|
Maryville PWS Maryville · Nodaway County |
10,775 | 3 | 0 | |
|
Harrisonville PWS Harrisonville · Cass County |
10,250 | 2 | 0 | |
|
Kennett PWS Kennett · Dunklin County |
10,200 | 2 | 0 | |
|
Chillicothe Municipal Utilities PWS Chillicothe · Livingston County |
10,187 | 1 | 0 | |
|
Whiteman Air Base Johnson County |
10,106 | 1 | 0 | |
|
Jefferson County Pwsd 10 Jefferson County |
10,000 | 1 | 0 | |
|
Callaway County Pwsd 1 Holts Summit · Callaway County |
9,840 | 0 | 0 | |
|
Monett PWS Monett · Barry County |
9,789 | 1 | 0 | |
|
Jackson County Pwsd 13 Lees Summit · Jackson County |
9,700 | 1 | 0 | |
|
Vernon County Cons Pwsd 1 Nevada · Vernon County |
9,615 | 2 | 0 | |
|
Platte CO Pwsd 4 Platte City · Platte County |
9,552 | 0 | 0 | |
|
Barton Dade Cedar Jasp Countycons Pwsd 1 Barton County |
9,523 | 2 | 1 | |
|
Ray County Cons Pwsd 2 Polo, Richmond · Caldwell County |
9,360 | 0 | 0 | |
|
Oak Grove PWS Oak Grove · Jackson County |
9,200 | 1 | 1 | |
|
Greene County Pwsd 1 Battlefield · Greene County |
9,168 | 2 | 0 | |
|
Jackson County Pwsd 15 Lake Lotawana · Jackson County |
8,772 | 1 | 0 | |
|
MO American Tri State Branson · Taney County |
8,680 | 0 | 0 | |
|
Park Hills PWS Park Hills · St. Francois County |
8,587 | 0 | 0 | |
|
Perryville PWS Perryville · Perry County |
8,555 | 3 | 0 | |
|
Laclede County Pwsd 1 Lebanon · Laclede County |
8,550 | 0 | 0 | |
|
Cape Perry County Pwsd 1 South Jackson · Cape Girardeau County |
8,545 | 3 | 0 | |
|
Liberty Utilities Aurora Verona Aurora · Lawrence County |
8,529 | 0 | 0 | |
|
Silver Dollar City Marvel Cave Stone County |
8,501 | 3 | 0 | |
|
Willard PWS Willard · Greene County |
8,400 | 1 | 1 | |
|
Pleasant Hill PWS Pleasant Hill · Cass County |
8,262 | 3 | 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 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.