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WaterSafeCheck
Official EPA SDWIS Statewide AnalysisState Water Quality & Testing Directory

Oklahoma Drinking Water Quality & Testing Directory

Comprehensive EPA compliance records, water testing guidelines, and city rankings covering all 771 ZIP codes across Oklahoma

Quick Summary: Is Tap Water Safe in Oklahoma?

Drinking water in Oklahoma receives an average composite safety score of 78.6/100 based on EPA Safe Drinking Water Act records. Approximately 41% of monitored ZIP codes earn an "A" grade. Water sources are 65.8% surface water and 34.2% groundwater, resulting in Moderately Soft to Moderate mineral hardness across the state.

Total ZIP Codes

771

Health Violations (5yr)

3,730

Statewide Avg Score

78.6/100

High Lead Risk Areas

55.6%

Overview: Drinking Water in Oklahoma

Drinking water quality in Oklahoma averages a composite safety score of 78.6/100 across its 771 monitored ZIP codes. Approximately 41% of ZIP codes in the state receive an "A" grade, while 0% receive an "F" grade. Environmental standards are enforced by Oklahoma Department of Environmental Quality.

Surface Water

65.8%

of ZIP codes

Total Violations

10,231

5-year record

Grade A ZIPs

315

41% of state

Grade F ZIPs

1

0% of state

Water Quality Grade Distribution in Oklahoma

How do Oklahoma's 771 ZIP codes stack up by water quality grade?

A
315 ZIP codes41%
B
205 ZIP codes27%
C
233 ZIP codes30%
D
17 ZIP codes2%
F
1 ZIP codes0%

Popular Cities in Oklahoma

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

Oklahoma City

79 ZIPs

A

Tulsa

52 ZIPs

A

Edmond

6 ZIPs

A

Norman

6 ZIPs

B

Ardmore

5 ZIPs

C

Lawton

5 ZIPs

B

Enid

5 ZIPs

A

Stillwater

5 ZIPs

B

Bartlesville

4 ZIPs

C

Broken Arrow

4 ZIPs

C

Duncan

3 ZIPs

C

Claremore

3 ZIPs

B

Muskogee

3 ZIPs

C

Ponca City

3 ZIPs

A

Shawnee

3 ZIPs

C

Chickasha

2 ZIPs

C

Davis

2 ZIPs

A

Yukon

2 ZIPs

B

Altus

2 ZIPs

C

Elk City

2 ZIPs

A

Woodward

2 ZIPs

A

Sapulpa

2 ZIPs

B

Grove

2 ZIPs

C

Miami

2 ZIPs

B

Pryor

2 ZIPs

B

Braggs

2 ZIPs

A

Tahlequah

2 ZIPs

C

Wagoner

2 ZIPs

C

Mcalester

2 ZIPs

C

Atoka

2 ZIPs

C

Seminole

2 ZIPs

A

Ada

2 ZIPs

A

Durant

2 ZIPs

B

Albert

1 ZIP

C

Alex

1 ZIP

C

Amber

1 ZIP

C

Anadarko

1 ZIP

C

Apache

1 ZIP

B

Arcadia

1 ZIP

A

Bethany

1 ZIP

B

City A-Z Directory — Oklahoma

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

A
AchilleAdaAdairAdamsAddingtonAftonAgraAlbanyAlbertAlbionAldersonAlexAlineAllenAltusAltus AfbAlvaAmberAmesAmoritaAnadarkoAntlersApacheArapahoArcadiaArdmoreArkomaArnettAsherAtokaAtwoodAvant
B
BalkoBarnsdallBartlesvilleBattiestBeaverBeggsBenningtonBessieBethanyBethelBig CabinBillingsBingerBisonBixbyBlackwellBlairBlanchardBlancoBlockerBluejacketBoise CityBokchitoBokosheBoleyBoswellBowlegsBoyntonBradleyBraggsBramanBristowBroken ArrowBroken BowBromideBuffaloBunchBurbankBurlingtonBurneyvilleBurns FlatButlerByars
C
CacheCaddoCaleraCalumetCalvinCamargoCameronCanadianCaneyCantonCanuteCardinCarmenCarnegieCarneyCarrierCarterCartwrightCashionCastleCatoosaCementCentrahomaChandlerChattanoogaChecotahChelseaCherokeeChesterCheyenneChickashaChoctawChouteauClaremoreClaritaClaytonCleo SpringsClevelandClintonCoalgateColbertColcordColemanCollinsvilleColonyComancheCommerceConchoConnervilleCooksonCopanCordellCornCouncil HillCountylineCovingtonCowetaCoyleCrawfordCrescentCromwellCrowderCushingCuster CityCyril
D
DacomaDaisyDavenportDavidsonDavisDeer CreekDelawareDepewDevolDewarDeweyDibbleDill CityDisneyDoughertyDouglasDoverDrummondDrumrightDukeDuncanDurantDurhamDustin
E
EagletownEaklyEarlsboroEdmondEl RenoEldoradoElginElk CityElmerElmore CityEnidErickEuchaEufaula
F
FairfaxFairlandFairmontFairviewFanshaweFargoFaxonFayFeltFinleyFittstownFitzhughFletcherForganFort CobbFort GibsonFort SillFort SupplyFort TowsonFossFosterFoxFoyilFrancisFrederickFreedom
G
GageGansGarberGarvinGateGearyGene AutryGeronimoGlencoeGlenpoolGoldenGoltryGoodwellGoreGoteboGouldGowenGracemontGrahamGrandfieldGraniteGrantGreenfieldGroveGuthrieGuymon
H
HaileyvilleHallettHammonHannaHardestyHarrahHartshorneHaskellHastingsHaworthHeadrickHealdtonHeavenerHelenaHendrixHennepinHennesseyHenryettaHillsdaleHintonHitchcockHitchitaHobartHodgenHoldenvilleHollisHollisterHominyHookerHopetonHoweHoytHugoHulbertHunterHydro
I
IdabelIndiahomaIndianolaInolaIsabella
J
JayJenksJenningsJetJones
K
KansasKaw CityKellyvilleKempKeneficKentonKeotaKetchumKeyesKiamichi Christian MissionKieferKingfisherKingstonKintaKiowaKonawaKrebsKremlin
L
LahomaLamarLamontLaneLangleyLangstonLaverneLawtonLebanonLeedeyLefloreLehighLenapahLeonLeonardLequireLexingtonLindsayLocoLocust GroveLone GroveLone WolfLongdaleLookebaLovelandLoyalLucienLuther
M
MacombMadillManchesterMangumManitouMannfordMannsvilleMaramecMarble CityMariettaMarlandMarlowMarshallMarthaMaudMayMaysvilleMcalesterMccurtainMcloudMeadMedfordMedicine ParkMeekerMeersMenoMeridianMiamiMilburnMilfayMill CreekMillertonMincoMoffettMonroeMoodysMoorelandMorrisMorrisonMoundsMountain ParkMountain ViewMoyersMuldrowMulhallMuseMuskogeeMustangMutual
N
NardinNashNashobaNewallaNewcastleNewkirkNicoma ParkNinnekahNobleNormanNorth MiamiNowata
O
OakhurstOaksOakwoodOchelataOiltonOkarcheOkayOkeeneOkemahOklahoma CityOkmulgeeOktahaOlusteeOmegaOologahOrlandoOsageOscarOverbrookOwasso
P
PadenPanamaPanolaPaoliPark HillPauls ValleyPawhuskaPawneePeggsPerkinsPerryPicherPickensPiedmontPittsburgPlatterPocassetPocolaPonca CityPond CreekPorterPorumPoteauPraguePrestonProctorPruePryorPurcellPutnam
Q
QuapawQuinton
R
RalstonRamonaRandlettRatliff CityRattanRaviaRed OakRed RockRedbirdRentiesvilleReydonRinglingRingoldRingwoodRipleyRockyRoffRolandRooseveltRoseRosstonRufeRush SpringsRyan
S
S CoffeyvilleSaint LouisSalinaSallisawSand SpringsSapulpaSasakwaSavannaSawyerSayreSchulterSeilingSeminoleSentinelShady PointShamrockSharonShattuckShawneeShidlerSkiatookSlickSmithvilleSnowSnyderSoperSouthardSparksSpavinawSpencerSpencervilleSperrySpiroSpringerSterlingStidhamStiglerStillwaterStilwellStonewallStrangStratfordStringtownStroudStuartSulphurSweetwaterSwink
T
TaftTahlequahTalalaTalihinaTalogaTatumsTecumsehTempleTerltonTerralTexhomaTexolaThackervilleThomasTiptonTishomingoTonkawaTryonTulsaTupeloTurpinTuskahomaTussyTuttleTwin OaksTyrone
U
Union City
V
ValliantVelmaVeraVerdenVianViciVinitaVinson
W
WagonerWainwrightWakitaWaltersWanetteWannWapanuckaWardvilleWarnerWashingtonWatongaWatsonWattsWaukomisWaurikaWayneWaynokaWeatherfordWebbers FallsWelchWeleetkaWellingWellstonWestvilleWetumkaWewokaWheatlandWhitefieldWhitesboroWilburtonWillowWilsonWisterWoodwardWright CityWyandotteWynnewoodWynona
Y
YaleYukon

🏆 Highest Rated ZIP Codes in Oklahoma

73016Cashion
99/100
A
73073Orlando
99/100
A
73082Rush Springs
99/100
A
73430Burneyville
99/100
A
73432Coleman
99/100
A

⚠ Lowest Rated ZIP Codes in Oklahoma

74536Clayton
37/100
F
74873Tecumseh
40/100
D
74332Big Cabin
41/100
D
74560Pittsburg
46/100
D
74883Wetumka
51/100
D

Common Drinking Water Contaminants in Oklahoma

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

Stage 2 DBP RuleHaloacetic Acids (HAA5)Total Trihalomethanes (TTHM)Fecal ColiformChloriteE. coliArsenicConsumer Confidence Report Rule

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 — Oklahoma Drinking Water

Is tap water generally safe to drink in Oklahoma?+
Yes, for the majority of residents, tap water in Oklahoma is treated and regulated. However, compliance varies by city. State-wide, 315 ZIP codes receive an "A" grade, while 1 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 Oklahoma?+
Residents in Oklahoma can test their tap or well water by contacting laboratories certified by Oklahoma Department of Environmental Quality 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 Oklahoma?+
The primary issues include managing 3,730 health-based violations state-wide and resolving infrastructure age. 55.6% 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 Oklahoma?+
Drinking water in Oklahoma is regulated by Oklahoma Department of Environmental Quality under a primacy agreement with the U.S. EPA.
Where does Oklahoma get its drinking water?+
Approximately 65.8% of monitored areas in Oklahoma 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 Oklahoma?+
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 771 ZIP Codes in Oklahoma

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

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All 771 ZIP codes in Oklahoma are actively monitored under the EPA Safe Drinking Water Act.