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WaterSafeCheck
Official EPA SDWIS Statewide AnalysisState Water Quality & Testing Directory

Maine Drinking Water Quality & Testing Directory

Comprehensive EPA compliance records, water testing guidelines, and city rankings covering all 485 ZIP codes across Maine

Quick Summary: Is Tap Water Safe in Maine?

Drinking water in Maine receives an average composite safety score of 56.5/100 based on EPA Safe Drinking Water Act records. Approximately 0% of monitored ZIP codes earn an "A" grade. Water sources are 29.3% surface water and 70.7% groundwater, resulting in Hard to Very Hard mineral hardness across the state.

Total ZIP Codes

485

Health Violations (5yr)

287

Statewide Avg Score

56.5/100

High Lead Risk Areas

60.2%

Overview: Drinking Water in Maine

Drinking water quality in Maine averages a composite safety score of 56.5/100 across its 485 monitored ZIP codes. Approximately 0% of ZIP codes in the state receive an "A" grade, while 2% receive an "F" grade. Environmental standards are enforced by Maine Center for Disease Control and Prevention.

Surface Water

29.3%

of ZIP codes

Total Violations

1,440

5-year record

Grade A ZIPs

0

0% of state

Grade F ZIPs

9

2% of state

Water Quality Grade Distribution in Maine

How do Maine's 485 ZIP codes stack up by water quality grade?

A
0 ZIP codes0%
B
64 ZIP codes13%
C
171 ZIP codes35%
D
241 ZIP codes50%
F
9 ZIP codes2%

Popular Cities in Maine

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

Portland

9 ZIPs

C

Augusta

5 ZIPs

C

Freeport

3 ZIPs

C

Auburn

3 ZIPs

D

Lewiston

3 ZIPs

C

Biddeford

2 ZIPs

C

Westbrook

2 ZIPs

C

Scarborough

2 ZIPs

C

South Portland

2 ZIPs

D

Bangor

2 ZIPs

C

Castine

2 ZIPs

C

Orono

2 ZIPs

D

Limestone

2 ZIPs

C

Waterville

2 ZIPs

F

New Portland

2 ZIPs

C

Berwick

1 ZIP

C

Cape Neddick

1 ZIP

D

Eliot

1 ZIP

C

Kittery

1 ZIP

C

Kittery Point

1 ZIP

D

North Berwick

1 ZIP

C

Ogunquit

1 ZIP

D

South Berwick

1 ZIP

C

York

1 ZIP

C

York Beach

1 ZIP

F

York Harbor

1 ZIP

D

Acton

1 ZIP

D

Alfred

1 ZIP

C

Bailey Island

1 ZIP

D

Bar Mills

1 ZIP

D

Biddeford Pool

1 ZIP

D

Bowdoinham

1 ZIP

B

Bridgton

1 ZIP

C

Brownfield

1 ZIP

D

Brunswick

1 ZIP

C

Bustins Island

1 ZIP

D

Cape Porpoise

1 ZIP

D

Casco

1 ZIP

C

Center Lovell

1 ZIP

D

Chebeague Island

1 ZIP

D

City A-Z Directory — Maine

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

A
AbbotActonAddisonAlbionAlfredAlnaAndoverAnsonAshlandAthensAuburnAugustaAurora
B
Bailey IslandBaileyvilleBangorBar HarborBar MillsBass HarborBathBealsBelfastBelgradeBelgrade LakesBenedictaBernardBerwickBethelBiddefordBiddeford PoolBinghamBirch HarborBlaineBlue HillBoothbayBoothbay HarborBowdoinBowdoinhamBradfordBradleyBremenBrewerBridgewaterBridgtonBristolBrooklinBrooksBrooksvilleBrooktonBrownfieldBrownvilleBrownville JunctionBrunswickBryant PondBuckfieldBucksportBurlingtonBurnhamBustins IslandBuxton
C
CalaisCambridgeCamdenCanaanCantonCape ElizabethCape NeddickCape PorpoiseCaratunkCaribouCarmelCascoCastineCenter LovellChamberlainCharlestonChebeague IslandCherryfieldChina VillageClayton LakeCliff IslandClintonColumbia FallsCoopers MillsCoreaCorinnaCorinthCornishCranberry IslesCrousevilleCumberland CenterCumberland ForesideCushingCutler
D
DamariscottaDanforthDanvilleDeer IsleDenmarkDennysvilleDetroitDexterDixfieldDixmontDover FoxcroftDresdenDrydenDurham
E
Eagle LakeEast AndoverEast BaldwinEast Blue HillEast BoothbayEast DixfieldEast LivermoreEast MachiasEast MillinocketEast NewportEast OrlandEast ParsonsfieldEast PolandEast VassalboroEast WaterboroEast WiltonEast WinthropEastonEastportEddingtonEdgecombEliotEllsworthEstcourt StationEtnaEustisExeter
F
FairfieldFalmouthFarmingdaleFarmingtonFarmington FallsFort FairfieldFort KentFort Kent MillsFrankfortFranklinFreedomFreeportFrenchboroFrenchvilleFriendshipFryeburg
G
GardinerGarlandGeorgetownGorhamGouldsboroGrand IsleGrand Lake StreamGrayGreenbushGreeneGreenvilleGreenville JunctionGreenwoodGuilford
H
HallowellHampdenHancockHanoverHarborsideHarmonyHarpswellHarringtonHarrisonHartlandHebronHinckleyHiramHoldenHollis CenterHopeHoultonHowlandHudsonHulls Cove
I
Island FallsIsle Au HautIsle Of SpringsIslesboroIslesford
J
JackmanJayJeffersonJonesboroJonesport
K
KenduskeagKennebunkKennebunkportKents HillKingfieldKingmanKitteryKittery Point
L
LagrangeLambert LakeLebanonLeeLeedsLevantLewistonLibertyLimerickLimestoneLimingtonLincolnLincolnvilleLincolnville CenterLisbonLisbon FallsLitchfieldLittle Deer IsleLivermoreLivermore FallsLong IslandLovellLubec
M
MachiasMachiasportMadawaskaMadisonManchesterMapletonMars HillMatinicusMattawamkeagMechanic FallsMeddybempsMedwayMexicoMilbridgeMilfordMillinocketMiloMinotMonheganMonmouthMonroeMonsonMonticelloMoodyMorrillMount DesertMount Vernon
N
NaplesNew GloucesterNew HarborNew LimerickNew PortlandNew SharonNew SwedenNew VineyardNewcastleNewfieldNewportNewryNobleboroNorridgewockNorth AnsonNorth BerwickNorth BridgtonNorth HavenNorth JayNorth MonmouthNorth TurnerNorth VassalboroNorth WaterboroNorth WaterfordNorth YarmouthNortheast HarborNorway
O
OakfieldOaklandOcean ParkOgunquitOld Orchard BeachOld TownOquossocOrientOrlandOronoOrringtonOrrs IslandOwls HeadOxbowOxford
P
PalermoPalmyraParisParsonsfieldPassadumkeagPattenPeaks IslandPemaquidPembrokePenobscotPerhamPerryPeruPhillipsPhippsburgPittsfieldPlymouthPolandPort ClydePortagePorterPortlandPownalPresque IslePrincetonProspect Harbor
R
RandolphRangeleyRaymondReadfieldRichmondRobbinstonRocklandRockportRockwoodRound PondRoxburyRumford
S
SabattusSacoSaint AgathaSaint AlbansSaint DavidSaint FrancisSalsbury CoveSandy PointSanfordSangervilleSargentvilleScarboroughSeal CoveSeal HarborSearsmontSearsportSebagoSebasco EstatesSebecSedgwickShapleighShawmutSheridanShermanShirley MillsSinclairSkowheganSmithfieldSmyrna MillsSolonSorrentoSouth BerwickSouth BristolSouth CascoSouth ChinaSouth FreeportSouth GardinerSouth ParisSouth PortlandSouth ThomastonSouth WindhamSouthportSouthwest HarborSpringfieldSpringvaleSpruce HeadSquirrel IslandStacyvilleStandishSteep FallsStetsonSteubenStillwaterStockholmStockton SpringsStonehamStoningtonStrattonStrongSullivanSumnerSunsetSurrySwans Island
T
TempleTenants HarborThomastonThorndikeTopsfieldTopshamTrevettTroyTurner
U
UnionUnity
V
Van BurenVanceboroVassalboroViennaVinalhaven
W
WaiteWaldoboroWallagrassWalpoleWarrenWashburnWashingtonWaterboroWaterfordWatervilleWayneWeldWellsWesleyWest BaldwinWest BethelWest Boothbay HarborWest EnfieldWest FarmingtonWest ForksWest KennebunkWest MinotWest NewfieldWest ParisWest PolandWest RockportWestbrookWestfieldWhitefieldWhitingWiltonWindhamWindsorWinnWinter HarborWinterportWinthropWiscassetWoolwichWytopitlock
Y
YarmouthYorkYork BeachYork Harbor

🏆 Highest Rated ZIP Codes in Maine

04008Bowdoinham
83/100
B
04547Friendship
83/100
B
04606Addison
83/100
B
04622Cherryfield
83/100
B
04631Eastport
83/100
B

⚠ Lowest Rated ZIP Codes in Maine

04274Poland
30/100
F
04664Sullivan
33/100
F
04677Sorrento
33/100
F
03910York Beach
35/100
F
04046Kennebunkport
35/100
F

Common Drinking Water Contaminants in Maine

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

Stage 1 DBP RuleBariumHaloacetic Acids (HAA5)Consumer Confidence Report RuleTotal Trihalomethanes (TTHM)Gross AlphaFecal ColiformE. coli

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 — Maine Drinking Water

Is tap water generally safe to drink in Maine?+
Yes, for the majority of residents, tap water in Maine is treated and regulated. However, compliance varies by city. State-wide, 0 ZIP codes receive an "A" grade, while 9 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 Maine?+
Residents in Maine can test their tap or well water by contacting laboratories certified by Maine Center for Disease Control and Prevention 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 Maine?+
The primary issues include managing 287 health-based violations state-wide and resolving infrastructure age. 60.2% 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 Maine?+
Drinking water in Maine is regulated by Maine Center for Disease Control and Prevention under a primacy agreement with the U.S. EPA.
Where does Maine get its drinking water?+
Approximately 29.3% of monitored areas in Maine 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 Maine?+
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 485 ZIP Codes in Maine

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

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All 485 ZIP codes in Maine are actively monitored under the EPA Safe Drinking Water Act.