Skip to main content
WaterSafeCheck
Official EPA SDWIS Statewide AnalysisState Water Quality & Testing Directory

Arizona Drinking Water Quality & Testing Directory

Comprehensive EPA compliance records, water testing guidelines, and city rankings covering all 553 ZIP codes across Arizona

Quick Summary: Is Tap Water Safe in Arizona?

Drinking water in Arizona receives an average composite safety score of 64.4/100 based on EPA Safe Drinking Water Act records. Approximately 0% of monitored ZIP codes earn an "A" grade. Water sources are 36.7% surface water and 63.3% groundwater, resulting in Hard to Very Hard mineral hardness across the state.

Total ZIP Codes

553

Health Violations (5yr)

4,074

Statewide Avg Score

64.4/100

High Lead Risk Areas

18.3%

Overview: Drinking Water in Arizona

Drinking water quality in Arizona averages a composite safety score of 64.4/100 across its 553 monitored ZIP codes. Approximately 0% of ZIP codes in the state receive an "A" grade, while 1% receive an "F" grade. Environmental standards are enforced by Arizona Department of Environmental Quality.

Surface Water

36.7%

of ZIP codes

Total Violations

29,686

5-year record

Grade A ZIPs

0

0% of state

Grade F ZIPs

6

1% of state

Water Quality Grade Distribution in Arizona

How do Arizona's 553 ZIP codes stack up by water quality grade?

A
0 ZIP codes0%
B
221 ZIP codes40%
C
144 ZIP codes26%
D
182 ZIP codes33%
F
6 ZIP codes1%

Popular Cities in Arizona

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

Phoenix

78 ZIPs

D

Tucson

54 ZIPs

D

Mesa

19 ZIPs

B

Scottsdale

15 ZIPs

B

Glendale

12 ZIPs

C

Casa Grande

8 ZIPs

B

Chandler

8 ZIPs

B

Tempe

8 ZIPs

B

Gilbert

7 ZIPs

B

Apache Junction

6 ZIPs

B

Peoria

6 ZIPs

C

Flagstaff

6 ZIPs

C

Prescott

6 ZIPs

F

Yuma

5 ZIPs

C

Surprise

5 ZIPs

D

Sedona

5 ZIPs

B

Maricopa

4 ZIPs

C

Douglas

4 ZIPs

B

Sierra Vista

4 ZIPs

B

Lake Havasu City

4 ZIPs

C

Bullhead City

4 ZIPs

B

Florence

3 ZIPs

B

Queen Creek

3 ZIPs

B

Sun City

3 ZIPs

B

Nogales

3 ZIPs

C

Prescott Valley

3 ZIPs

B

Kingman

3 ZIPs

B

Arizona City

2 ZIPs

D

Chandler Heights

2 ZIPs

B

Coolidge

2 ZIPs

B

Eloy

2 ZIPs

B

Hayden

2 ZIPs

D

Kearny

2 ZIPs

C

San Tan Valley

2 ZIPs

C

Picacho

2 ZIPs

B

Red Rock

2 ZIPs

C

Stanfield

2 ZIPs

D

Superior

2 ZIPs

B

Fountain Hills

2 ZIPs

C

Avondale

2 ZIPs

B

City A-Z Directory — Arizona

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

A
AguilaAjoAlpineAmadoApache JunctionArivacaArizona CityArlingtonAsh ForkAvondale
B
BagdadBapchuleBellemontBensonBisbeeBlack Canyon CityBlueBlue GapBouseBowieBuckeyeBullhead CityBylas
C
CameronCamp VerdeCarefreeCasa GrandeCashionCatalinaCave CreekCentralChambersChandlerChandler HeightsChinleChino ValleyChlorideCibecueCibolaClarkdaleClay SpringsClaypoolCliftonCochiseColorado CityConchoCongressCoolidgeCornvilleCortaroCottonwoodCrown King
D
DatelandDennehotsoDeweyDolan SpringsDouglasDragoonDuncan
E
EagarEdenEhrenbergEl MirageElfridaElginEloy
F
FlagstaffFlorenceForest LakesFort ApacheFort DefianceFort HuachucaFort McdowellFort MohaveFort ThomasFountain HillsFredonia
G
GadsdenGanadoGila BendGilbertGlendaleGlendale Luke AfbGlobeGold CanyonGolden ValleyGoodyearGrand CanyonGray MountainGreen ValleyGreer
H
HackberryHappy JackHaydenHeberHerefordHigleyHolbrookHotevillaHouckHuachuca CityHualapaiHumboldt
I
Indian Wells
J
JeromeJoseph City
K
KaibetoKayentaKeams CanyonKearnyKingmanKirklandKykotsmovi Village
L
Lake Havasu CityLake MontezumaLakesideLaveenLeuppLitchfield ParkLittlefieldLukachukaiLukevilleLupton
M
MammothMany FarmsMaranaMarble CanyonMaricopaMayerMc NealMcnaryMeadviewMesaMiamiMohave ValleyMorenciMormon LakeMorristownMount LemmonMunds Park
N
NacoNazliniNew RiverNogalesNorth RimNutrioso
O
OatmanOracleOvergaard
P
PagePalo VerdeParadise ValleyParkerParksPatagoniaPauldenPaysonPeach SpringsPearcePeoriaPeridotPetrified Forest Natl PkPhoenixPicachoPimaPinePinedalePinetopPinonPirtlevillePolaccaPomerenePostonPrescottPrescott Valley
Q
QuartzsiteQueen Creek
R
Red RockRed ValleyRillitoRimrockRio RicoRio VerdeRock PointRollRooseveltRound Rock
S
SacatonSaffordSahuaritaSaint DavidSaint JohnsSaint MichaelsSalomeSan CarlosSan LuisSan ManuelSan SimonSan Tan ValleySandersSasabeScottsdaleSecond MesaSedonaSeligmanSellsShontoShow LowSierra VistaSkull ValleySnowflakeSolomonSomertonSonoitaSpringervilleStanfieldSun CitySun City WestSun ValleySupaiSuperiorSurprise
T
TacnaTaylorTeec Nos PosTempeTemple Bar MarinaThatcherTollesonTombstoneTonaleaTonopahTonto BasinTopawaTopockTortilla FlatTsaileTuba CityTubacTucsonTumacacori
V
VailValentineValley FarmsVernon
W
WaddellWelltonWendenWhite Mountain LakeWhiteriverWickenburgWikieupWillcoxWilliamsWillow BeachWindow RockWinkelmanWinslowWittmannWoodruff
Y
YarnellYoungYoungtownYuccaYuma

🏆 Highest Rated ZIP Codes in Arizona

85342Morristown
83/100
B
85377Carefree
83/100
B
85601Arivaca
83/100
B
85623Oracle
83/100
B
86337Seligman
83/100
B

⚠ Lowest Rated ZIP Codes in Arizona

86302Prescott
27/100
F
86304Prescott
27/100
F
86313Prescott
27/100
F
86301Prescott
36/100
F
86303Prescott
36/100
F

Common Drinking Water Contaminants in Arizona

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

Stage 2 DBP RuleContaminant 0700Consumer Confidence Report RuleFecal ColiformLeadBariumChloriteHaloacetic Acids (HAA5)

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 — Arizona Drinking Water

Is tap water generally safe to drink in Arizona?+
Yes, for the majority of residents, tap water in Arizona is treated and regulated. However, compliance varies by city. State-wide, 0 ZIP codes receive an "A" grade, while 6 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 Arizona?+
Residents in Arizona can test their tap or well water by contacting laboratories certified by Arizona 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 Arizona?+
The primary issues include managing 4,074 health-based violations state-wide and resolving infrastructure age. 18.3% 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 Arizona?+
Drinking water in Arizona is regulated by Arizona Department of Environmental Quality under a primacy agreement with the U.S. EPA.
Where does Arizona get its drinking water?+
Approximately 36.7% of monitored areas in Arizona 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 Arizona?+
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 553 ZIP Codes in Arizona

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

85001850028500385004850058500685007850088500985010850118501285013850148501585016850178501885019850208502185022850238502485025850268502785028850298503085031850328503385034850358503685037850388503985040850418504285043850448504585046850488505085051850538505485055850608506185062850638506485065850668506785068850698507085071850728507385074850758507685078850798508085082850838508585086850878509785098851178511885119851208512185122851238512785128851308513185132851358513785138851398514085141851428514385145851478517285173851788519085191851928519385194852018520285203852048520585206852078520885209852108521185212852138521485215852168521885220852228522385224852258522685227852288523085231852328523385234852358523685237852388523985240852418524385244852458524685248852498525085251852528525385254852558525685257852588525985260852618526285263852648526685267852688526985271852728527385274852758527785279852808528185282852838528485285852868528785289852938529485295852968529785298852998530185302853038530485305853068530785308853098531085311853128531885320853218532285323853248532585326853278532885329853318533285333853348533585336853378533885339853408534185342853438534485345853468534785348853498535085351853528535385354853558535685357853588535985360853618536285363853648536585366853678536985371853728537385374853758537685377853788537985380853818538285383853858538785388853908539285395853968550185502855308553185532855338553485535855368553985540855418554285543855448554585546855478554885550855518555285553855548560185602856038560585606856078560885609856108561185613856148561585616856178561885619856208562185622856238562485625856268562785628856298563085631856328563385634856358563685637856388563985640856418564385644856458564685648856508565285653856548565585658856628567085671857018570285703857048570585706857078570885709857108571185712857138571485715857168571785718857198572085721857228572385724857258572685728857308573185732857338573485735857368573785738857398574085741857428574385744857458574685747857488574985750857518575285754857558575685757857758590185902859118591285920859228592385924859258592685927859288592985930859318593285933859348593585936859378593885939859408594185942860018600286003860048600586011860158601686017860188602086021860228602386024860258602886029860308603186032860338603486035860368603886039860408604286043860448604586046860478605286053860548630186302863038630486305863128631386314863158632086321863228632386324863258632686327863298633186332863338633486335863368633786338863398634086341863428634386351864018640286403864048640586406864098641186412864138642686427864298643086431864328643386434864358643686437864388643986440864418644286443864448644586446865028650386504865058650686507865088651086511865128651486515865208653586538865408654486545865478655586556

All 553 ZIP codes in Arizona are actively monitored under the EPA Safe Drinking Water Act.