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WaterSafeCheck
Official EPA SDWIS Statewide AnalysisState Water Quality & Testing Directory

Missouri Drinking Water Quality & Testing Directory

Comprehensive EPA compliance records, water testing guidelines, and city rankings covering all 1,161 ZIP codes across Missouri

Quick Summary: Is Tap Water Safe in Missouri?

Drinking water in Missouri receives an average composite safety score of 68.6/100 based on EPA Safe Drinking Water Act records. Approximately 4% of monitored ZIP codes earn an "A" grade. Water sources are 34.9% surface water and 65.1% groundwater, resulting in Hard to Very Hard mineral hardness across the state.

Total ZIP Codes

1,161

Health Violations (5yr)

404

Statewide Avg Score

68.6/100

High Lead Risk Areas

59.9%

Overview: Drinking Water in Missouri

Drinking water quality in Missouri averages a composite safety score of 68.6/100 across its 1,161 monitored ZIP codes. Approximately 4% of ZIP codes in the state receive an "A" grade, while 0% receive an "F" grade. Environmental standards are enforced by Missouri Department of Natural Resources.

Surface Water

34.9%

of ZIP codes

Total Violations

3,116

5-year record

Grade A ZIPs

44

4% of state

Grade F ZIPs

0

0% of state

Water Quality Grade Distribution in Missouri

How do Missouri's 1,161 ZIP codes stack up by water quality grade?

A
44 ZIP codes4%
B
542 ZIP codes47%
C
305 ZIP codes26%
D
270 ZIP codes23%
F
0 ZIP codes0%

Popular Cities in Missouri

Click any city to view ZIP code-level water quality reports

Kansas City

75 ZIPs

C

Saint Louis

68 ZIPs

D

Springfield

16 ZIPs

B

Jefferson City

11 ZIPs

B

Columbia

11 ZIPs

B

Independence

9 ZIPs

C

Saint Joseph

8 ZIPs

D

Lees Summit

7 ZIPs

C

Ballwin

4 ZIPs

D

Florissant

4 ZIPs

D

Saint Charles

4 ZIPs

D

Joplin

4 ZIPs

B

Chesterfield

3 ZIPs

C

Cape Girardeau

3 ZIPs

B

Blue Springs

3 ZIPs

C

Rolla

3 ZIPs

B

Fenton

2 ZIPs

B

O Fallon

2 ZIPs

C

Poplar Bluff

2 ZIPs

B

Liberty

2 ZIPs

C

Osceola

2 ZIPs

C

Sedalia

2 ZIPs

B

Branson

2 ZIPs

B

Hollister

2 ZIPs

B

Arnold

1 ZIP

C

Barnhart

1 ZIP

B

Beaufort

1 ZIP

B

Berger

1 ZIP

B

Catawissa

1 ZIP

C

Cedar Hill

1 ZIP

C

Crystal City

1 ZIP

C

De Soto

1 ZIP

B

Dittmer

1 ZIP

C

Eureka

1 ZIP

C

Festus

1 ZIP

B

Fletcher

1 ZIP

C

French Village

1 ZIP

D

Gerald

1 ZIP

B

Glencoe

1 ZIP

D

Gray Summit

1 ZIP

C

City A-Z Directory — Missouri

Browse water quality reports for every town and city in Missouri.

A
AdrianAdvanceAgencyAlbaAlbanyAldrichAlexandriaAllendaleAlmaAltamontAltenburgAltonAmazoniaAmityAmoretAmsterdamAnabelAndersonAnnadaAnnapolisAnnistonAppleton CityArbelaArbyrdArcadiaArchieArcolaArgyleArmstrongArnoldArrow RockAsburyAsh GroveAshburnAshlandAtlantaAugustaAuroraAuxvasseAvaAvilla
B
BakersfieldBallwinBaringBarnardBarnettBarnhartBates CityBeaufortBelgradeBell CityBelleBelleviewBellflowerBeltonBentonBenton CityBergerBernieBertrandBethanyBethelBeulahBevierBillingsBirch TreeBismarckBixbyBlackBlackburnBlackwaterBlackwellBlairstownBlandBlodgettBloomfieldBloomsdaleBlue EyeBlue SpringsBlythedaleBogardBois D ArcBolckowBolivarBonne TerreBonnots MillBoonvilleBossBosworthBourbonBowling GreenBradleyvilleBragg CityBraggadocioBrandsvilleBransonBrashearBraymerBrazeauBreckenridgeBriarBridgetonBrightonBrinktownBrixeyBronaughBrookfieldBrooklineBroseleyBrowningBrownwoodBrumleyBrunerBrunswickBucklinBucknerBucyrusBuffaloBuncetonBunkerBurfordvilleBurlington JunctionButlerButterfield
C
CaboolCadetCainsvilleCairoCaledoniaCalhounCaliforniaCallaoCamdenCamden PointCamdentonCameronCampbellCanalouCantonCape FairCape GirardeauCaplinger MillsCardwellCarl JunctionCarrolltonCartervilleCarthageCaruthersvilleCascadeCassvilleCatawissaCatronCaulfieldCedar HillCedarcreekCenterCentertownCenterviewCentervilleCentraliaChadwickChaffeeChamoisCharlestonCherryvilleChesterfieldChestnutridgeChilhoweeChillicotheChulaClarenceClarkClarksburgClarksdaleClarksvilleClarktonClearmontClevelandCleverClifton HillClimax SpringsClintonClubbClydeCoatsvilleCoffeyCole CampCollinsColumbiaCommerceConceptionConception JunctionConcordiaConwayCook StaCooterCorderCosbyCottlevilleCouchCowgillCraigCraneCreightonCrockerCross TimbersCrystal CityCubaCurryville
D
DadevilleDaisyDaltonDarlingtonDavisvilleDawnDe KalbDe SotoDe WittDearbornDeepwaterDeerfieldDeeringDefianceDeltaDenverDes ArcDevils ElbowDexterDiamondDigginsDittmerDixonDoe RunDoniphanDoraDoverDowningDrexelDruryDudleyDuenwegDukeDunneganDurhamDutchtownDutzow
E
Eagle RockEaglevilleEarth CityEast LynneEast PrairieEastonEdgar SpringsEdgertonEdinaEdwardsEl Dorado SpringsEldonEldridgeElk CreekElklandEllingtonEllsinoreElmerElmoElsberryEmdenEminenceEmmaEoliaEssexEthelEudoraEugeneEuniceEurekaEvertonEwingExcelloExcelsior SpringsExeter
F
FagusFair GroveFair PlayFairdealingFairfaxFairviewFalconFarberFarleyFarmingtonFarrarFaucettFayetteFentonFestusFillmoreFiskFlemingtonFletcherFlinthillFlorenceFlorissantFoleyFordlandForest CityForistellForsythFort Leonard WoodFortunaFosterFrankfordFranklinFredericktownFreeburgFreemanFreistattFremontFrench VillageFriedheimFrohnaFulton
G
GainesvilleGalenaGallatinGaltGarden CityGarrisonGasconadeGatewoodGentryGeraldGibbsGibsonGideonGilliamGilman CityGipsyGlasgowGlenallenGlencoeGlenwoodGoblerGoldenGolden CityGoodmanGordonvilleGorinGowerGraffGrahamGrain ValleyGranbyGrandinGrandviewGrangerGrant CityGravois MillsGray SummitGrayridgeGreen CastleGreen CityGreen RidgeGreenfieldGreentopGreenvilleGreenwoodGroverGrovespringGrubvilleGuilford
H
HaleHalf WayHallsvilleHalltownHamiltonHannibalHardenvilleHardinHarrisHarrisburgHarrisonvilleHartsburgHartshornHartvilleHarviellHarwoodHatfieldHawk PointHaytiHazelwoodHelenaHematiteHenleyHenriettaHerculaneumHermannHermitageHigbeeHigginsvilleHigh HillHigh PointHigh RidgeHighlandvilleHillsboroHolcombHoldenHollandHollidayHollisterHoltHolts SummitHopkinsHornersvilleHouse SpringsHoustonHoustoniaHugginsHughesvilleHumansvilleHumeHumphreysHunnewellHuntsvilleHurdlandHurley
I
IberiaImperialIndependenceIoniaIrondaleIrontonIsabella
J
JacksonJacksonvilleJadwinJamesonJamesportJamestownJasperJefferson CityJerico SpringsJeromeJonesburgJoplin
K
KahokaKaiserKansas CityKearneyKelsoKennettKewaneeKeytesvilleKidderKimberling CityKimmswickKing CityKingdom CityKingstonKingsvilleKirbyvilleKirksvilleKissee MillsKnob LickKnob NosterKnox CityKoeltztownKoshkonong
L
La BelleLa GrangeLa MonteLa PlataLa RussellLabadieLacledeLaddoniaLake OzarkLake Saint LouisLake SpringLamarLampeLanaganLancasterLaqueyLaredoLathamLathropLaurieLawsonLeadwoodLeasburgLebanonLees SummitLeetonLenoxLentnerLeonardLeopoldLeslieLestervilleLevasyLewistownLexingtonLiberalLibertyLickingLiguoriLilbournLincolnLinnLinn CreekLinneusLivoniaLock SpringsLockwoodLodiLohmanLone JackLonedellLong LaneLoose CreekLouisburgLouisianaLowndesLowry CityLucerneLudlowLuebberingLurayLynchburg
M
Macks CreekMacombMaconMadisonMaitlandMaldenMalta BendMansfieldMapavilleMarble HillMarcelineMarionvilleMarquandMarshallMarshfieldMarstonMarthasvilleMartinsburgMartinsvilleMaryland HeightsMaryvilleMatthewsMaysvilleMayviewMaywoodMc BrideMc FallMc GeeMc GirkMeadvilleMemphisMendonMercerMetaMetzMexicoMiamiMiddle BrookMiddletownMilanMilfordMill SpringMillerMillersvilleMiloMindenminesMineral PointMissouri CityMoberlyMokaneMonettMonroe CityMontgomery CityMonticelloMontierMontrealMontroseMoodyMooresvilleMoraMorehouseMorleyMorrisonMorrisvilleMorse MillMosbyMoscow MillsMound CityMoundvilleMount SterlingMount VernonMountain GroveMountain ViewMyrtle
N
NapoleonNaylorNeck CityNeelyvilleNelsonNeoshoNevadaNew BloomfieldNew BostonNew CambriaNew FlorenceNew FranklinNew HamptonNew HavenNew LondonNew MadridNew MelleNewarkNewburgNewtoniaNewtownNianguaNixaNobleNoelNorborneNorwoodNoveltyNovinger
O
O FallonOak GroveOak RidgeOdessaOld AppletonOld MonroeOldfieldOleanOlneyOranOregonOronogoOrrickOsage BeachOsbornOsceolaOttervilleOwensvilleOxlyOzark
P
PacificPalmyraParisPark HillsParmaParnellPattersonPattonPattonsburgPeace ValleyPeculiarPerkinsPerryPerryvillePevelyPhiladelphiaPhillipsburgPickeringPiedmontPierce CityPilot GrovePilot KnobPinevillePittsburgPlatoPlatte CityPlattsburgPleasant HillPleasant HopePlevnaPocahontasPoint LookoutPolkPollockPoloPomonaPonce De LeonPontiacPoplar BluffPortage Des SiouxPortagevillePortlandPotosiPottersvillePowellPowersitePowersvillePrairie HomePrestonPrincetonProtemPurcellPurdinPurdyPuxico
Q
Queen CityQuincyQulin
R
RacineRavenwoodRaymondvilleRaymoreRayvilleReaRedfordReedsReeds SpringRenickRepublicRevereReynoldsRhinelandRich HillRichardsRichlandRichmondRichwoodsRidgedaleRidgewayRiscoRiversideRivesRoachRobertsvilleRobyRocheportRock PortRockaway BeachRockbridgeRockvilleRocky ComfortRocky MountRogersvilleRollaRombauerRoscoeRosebudRosendaleRothvilleRueterRush HillRushvilleRussellvilleRutledge
S
SaginawSaint AlbansSaint AnnSaint CharlesSaint ClairSaint ElizabethSaint JamesSaint JosephSaint LouisSaint MarySaint PatrickSaint PetersSaint RobertSaint ThomasSainte GenevieveSalemSalisburySanta FeSarcoxieSavannahSavertonSchell CityScott CitySedaliaSedgewickvilleSeligmanSenathSenecaSeymourShelbinaShelbyvilleSheldonShell KnobSheridanSibleySikestonSilexSilvaSkidmoreSlaterSmithtonSmithvilleSoloSouth GreenfieldSouth West CitySpartaSpickardSpokaneSpringfieldSquiresStanberryStantonStark CitySteedmanSteeleSteelvilleStellaStetStewartsvilleStocktonStotts CityStoutlandStoutsvilleStoverStraffordStrasburgSturdivantSturgeonSuccessSullivanSummersvilleSumnerSunrise BeachSweet SpringsSyracuse
T
TallapoosaTaneyvilleTarkioTaylorTebbettsTecumsehThayerTheodosiaThompsonThornfieldTiffTiff CityTinaTiptonTreloarTrentonTrimbleTriplettTroyTruesdaleTruxtonTunasTurnersTurneyTuscumbia
U
UdallUlmanUnionUnion StarUniontownUnionvilleUrbanaUrichUtica
V
Valles MinesValley ParkVan BurenVandaliaVanduserVanzantVeronaVersaillesViburnumVichyViennaVilla RidgeVulcan
W
WaldronWalkerWalnut GroveWalnut ShadeWappapelloWardellWarrensburgWarrentonWarsawWashburnWashingtonWasolaWatsonWaverlyWaylandWaynesvilleWeatherbyWeaubleauWebb CityWellingtonWellsvilleWentworthWentzvilleWescoWest AltonWest PlainsWestboroWestonWestphaliaWheatlandWheatonWheelingWhiteman Air Force BaseWhiteoakWhitesideWhitewaterWillardWilliamsburgWilliamstownWilliamsvilleWillow SpringsWindsorWindyvilleWinfieldWiniganWinonaWinstonWolf IslandWooldridgeWorthWorthingtonWright CityWyacondaWyatt
Y
Yukon
Z
ZalmaZanoni

🏆 Highest Rated ZIP Codes in Missouri

63853Holland
98/100
A
63879Wardell
98/100
A
63758Kelso
96/100
A
63860Kewanee
96/100
A
63821Arbyrd
95/100
A

⚠ Lowest Rated ZIP Codes in Missouri

63011Ballwin
40/100
D
63021Ballwin
40/100
D
63022Ballwin
40/100
D
63024Ballwin
40/100
D
63045Earth City
40/100
D

Common Drinking Water Contaminants in Missouri

The following are common regulated contaminants found in Missouri drinking water based on EPA violation records. Click any contaminant to learn about EPA safety limits and health effects.

Contaminant 0700Consumer Confidence Report RuleChlorine residualHaloacetic Acids (HAA5)Total Trihalomethanes (TTHM)Contaminant 1009Gross BetaChlorite

Source: EPA Safe Drinking Water Act Maximum Contaminant Level regulations. For the complete list of regulated contaminants and MCLs, see the Water Quality Safety Guide.

Frequently Asked Questions — Missouri Drinking Water

Is tap water generally safe to drink in Missouri?+
Yes, for the majority of residents, tap water in Missouri is treated and regulated. However, compliance varies by city. State-wide, 44 ZIP codes receive an "A" grade, while 0 receive an "F". Search your specific ZIP code to see your local utility's record.
How do I test water quality or well water in Missouri?+
Residents in Missouri can test their tap or well water by contacting laboratories certified by Missouri Department of Natural Resources or ordering an EPA-standard laboratory water testing kit. Annual testing is recommended for private wells to test for bacteria, nitrates, and heavy metals.
What are the biggest water quality issues in Missouri?+
The primary issues include managing 404 health-based violations state-wide and resolving infrastructure age. 59.9% of ZIP codes in the state have a high probability of lead exposure risk due to pre-1986 piping.
Who regulates and enforces drinking water standards in Missouri?+
Drinking water in Missouri is regulated by Missouri Department of Natural Resources under a primacy agreement with the U.S. EPA.
Where does Missouri get its drinking water?+
Approximately 34.9% of monitored areas in Missouri rely on surface water sources (lakes/rivers), while the rest use groundwater aquifers.
How do I find the official water quality report for my home in Missouri?+
Search your ZIP code on our site to view data compiled from EPA records, or contact your local utility for their annual Consumer Confidence Report (CCR).
View All 1,161 ZIP Codes in Missouri

Browse EPA water quality data for every monitored ZIP code. For faster results, use the search bar above.

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All 1,161 ZIP codes in Missouri are actively monitored under the EPA Safe Drinking Water Act.