Missouri public water systems
2,938 active systems regulated under the Safe Drinking Water Act, serving a reported 6M people across 183 counties.
Dataset updated . Source: EPA SDWIS/ECHO, refreshed quarterly.
Active systems
2,938
Population served
6M
Community systems
1,607
Groundwater share
92%
System types in Missouri
1,607
Community water system
225
Non-transient non-community water system
1,106
Transient non-community water system
Largest water systems in Missouri
| # | Water system | County | Population served | Type | Source |
|---|---|---|---|---|---|
| 1 | Mo American St Louis St Charles Counties | St. Louis | 1,111,000 | Community | Surface water |
| 2 | Kansas City Pws | Cass | 513,800 | Community | Surface water |
| 3 | St Louis City Pws | St. Louis city | 304,709 | Community | Surface water |
| 4 | Springfield Pws | Greene | 210,898 | Community | Surface water |
| 5 | City of Columbia Utilities | Boone | 126,254 | Community | Groundwater |
| 6 | Independence Pws | Jackson | 120,000 | Community | Groundwater |
| 7 | St Charles County Pwsd 2 | St. Charles | 100,587 | Community | Purchased surface water |
| 8 | Lees Summit Pws | Jackson | 99,400 | Community | Purchased surface water |
| 9 | Mo American St Joseph | Andrew | 89,171 | Community | Groundwater |
| 10 | Mo American Joplin | Jasper | 73,728 | Community | Surface water |
| 11 | St Charles Pws | St. Charles | 73,040 | Community | Purchased surface water |
| 12 | Blue Springs Pws | Jackson | 61,084 | Community | Purchased surface water |
| 13 | St Peters Pws | St. Charles | 52,575 | Community | Purchased surface water |
| 14 | Wentzville Pws | St. Charles | 41,784 | Community | Groundwater |
| 15 | University of Missouri Columbia | Boone | 40,000 | Community | Groundwater |
| 16 | Cape Girardeau Pws | Cape Girardeau | 39,941 | Community | Groundwater |
| 17 | Jefferson Co Cons Pwsd C 1 | Jefferson | 37,000 | Community | Purchased surface water |
| 18 | Fort Leonard Wood | Pulaski | 34,000 | Community | Surface water |
| 19 | Ofallon Pws | St. Charles | 32,515 | Community | Purchased surface water |
| 20 | Liberty Pws | Clay | 30,800 | Community | Groundwater |
| 21 | Mo American Jefferson City District | Cole | 30,075 | Community | Surface water |
| 22 | Kirkwood Pws | St. Louis | 28,000 | Community | Purchased surface water |
| 23 | Gladstone Pws | Clay | 27,000 | Community | Groundwater |
| 24 | Boone County Cons Pwsd 1 | Boone | 24,700 | Community | Groundwater |
| 25 | Nixa Pws | Christian | 24,532 | Community | Groundwater |
By county
Stone230 systemsCamden226 systemsTaney112 systemsJefferson93 systemsBarry88 systemsBenton82 systemsGreene80 systemsFranklin80 systemsMorgan68 systemsSt. Charles54 systemsMiller52 systemsHickory44 systemsLincoln44 systemsChristian41 systemsJasper39 systemsSt. Francois38 systemsLawrence37 systemsNewton37 systemsCrawford36 systemsWashington35 systemsWayne32 systemsCass31 systemsCedar30 systemsPhelps30 systemsPettis29 systemsJackson29 systemsCape Girardeau29 systemsMontgomery29 systemsReynolds29 systemsWarren27 systemsWebster27 systemsSt. Tammany Parish27 systemsMcDonald26 systemsOzark25 systemsPulaski24 systemsLafayette Parish23 systemsPolk23 systemsIron23 systemsShannon23 systemsSt. Louis22 systemsClay20 systemsPlatte20 systemsDade19 systemsStoddard19 systemsScott18 systemsCole17 systemsGasconade17 systemsDallas17 systemsSte. Genevieve17 systemsDent16 systemsHarrison16 systemsJohnson16 systemsNew Madrid15 systemsLafayette15 systemsBates15 systemsPerry14 systemsLaclede14 systemsCallaway14 systemsButler14 systemsSt. Clair14 systemsHowell14 systemsBollinger14 systemsOsage13 systemsBoone13 systemsDunklin13 systemsTexas13 systemsHenry13 systemsNodaway12 systemsCaddo Parish12 systemsSaline11 systemsWright11 systemsDaviess11 systemsMoniteau11 systemsMaries10 systemsDouglas10 systemsAndrew10 systemsLinn9 systemsCarter9 systemsRay8 systemsVernon8 systemsSullivan8 systemsLivingston8 systemsRipley8 systemsCooper8 systemsCaldwell8 systemsMadison8 systemsAustin8 systemsHolt7 systemsClinton7 systemsOregon7 systemsCarroll7 systemsAudrain7 systemsMacon7 systemsPike6 systemsRandolph6 systemsMississippi6 systemsGentry6 systemsDeKalb6 systemsPemiscot6 systemsHoward6 systemsAtchison6 systemsGrundy5 systemsShelby5 systemsKerr5 systemsChariton5 systemsLewis5 systemsLivingston Parish5 systemsBurnet5 systemsHarris5 systemsEllis5 systemsMonroe4 systemsSchuyler4 systemsAdair4 systemsCalloway4 systemsClark4 systemsMarion4 systemsBarton4 systemsRalls4 systemsParker4 systemsAransas4 systemsWilson4 systemsLlano4 systemsLubbock4 systemsPutnam3 systemsBuchanan3 systemsWorth3 systemsVictoria3 systemsCalcasieu Parish3 systemsDenton3 systemsOrange3 systemsPanola3 systems
Knox2 systems
Scotland2 systems
Bandera2 systems
Hubbard2 systems
Erath2 systems
Summit2 systems
Mercer2 systems
Ouachita Parish2 systems
Gillespie2 systems
San Augustine2 systems
Hood2 systems
Brazoria2 systems
Hancock2 systems
St. Louis city1 systems
Prince William1 systems
Beauregard Parish1 systems
Bossier Parish1 systems
Washington Parish1 systems
Iberia Parish1 systems
Jackson Parish1 systems
Grand1 systems
Camp1 systems
Matagorda1 systems
Burleson1 systems
Tarrant1 systems
Hunt1 systems
Medina1 systems
Wood1 systems
Sabine1 systems
Wise1 systems
Robertson1 systems
McCulloch1 systems
Guadalupe1 systems
Hays1 systems
Hidalgo1 systems
Navarro1 systems
Sabine Parish1 systems
Chambers1 systems
Galveston1 systems
Liberty1 systems
Fort Bend1 systems
Roscommon1 systems
Sebastian1 systems
Limestone1 systems
Val Verde1 systems
Adams1 systems
DeSoto1 systems
Yalobusha1 systems
Forrest1 systems
Tate1 systems
Lamar1 systems
Noxubee1 systems