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WaterSafeCheck
Official EPA SDWIS Statewide AnalysisState Water Quality & Testing Directory

Massachusetts Drinking Water Quality & Testing Directory

Comprehensive EPA compliance records, water testing guidelines, and city rankings covering all 695 ZIP codes across Massachusetts

Quick Summary: Is Tap Water Safe in Massachusetts?

Drinking water in Massachusetts receives an average composite safety score of 66.3/100 based on EPA Safe Drinking Water Act records. Approximately 4% of monitored ZIP codes earn an "A" grade. Water sources are 60% surface water and 40% groundwater, resulting in Hard to Very Hard mineral hardness across the state.

Total ZIP Codes

695

Health Violations (5yr)

148

Statewide Avg Score

66.3/100

High Lead Risk Areas

68.6%

Overview: Drinking Water in Massachusetts

Drinking water quality in Massachusetts averages a composite safety score of 66.3/100 across its 695 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 Massachusetts Department of Environmental Protection.

Surface Water

60%

of ZIP codes

Total Violations

893

5-year record

Grade A ZIPs

29

4% of state

Grade F ZIPs

3

0% of state

Water Quality Grade Distribution in Massachusetts

How do Massachusetts's 695 ZIP codes stack up by water quality grade?

A
29 ZIP codes4%
B
247 ZIP codes36%
C
291 ZIP codes42%
D
125 ZIP codes18%
F
3 ZIP codes0%

Popular Cities in Massachusetts

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

Boston

38 ZIPs

A

Springfield

20 ZIPs

B

Worcester

16 ZIPs

C

Cambridge

7 ZIPs

C

Woburn

6 ZIPs

C

Lynn

6 ZIPs

C

New Bedford

6 ZIPs

B

Chicopee

5 ZIPs

B

Framingham

5 ZIPs

C

Andover

5 ZIPs

D

Lowell

5 ZIPs

C

Brockton

5 ZIPs

B

Fall River

5 ZIPs

C

Haverhill

4 ZIPs

C

Lawrence

4 ZIPs

C

Quincy

4 ZIPs

C

Waltham

4 ZIPs

C

Amherst

3 ZIPs

B

Northampton

3 ZIPs

B

Pittsfield

3 ZIPs

B

Groton

3 ZIPs

C

Westborough

3 ZIPs

C

Dorchester

3 ZIPs

C

Somerville

3 ZIPs

C

Middleboro

3 ZIPs

D

Plymouth

3 ZIPs

B

Watertown

3 ZIPs

C

Holyoke

2 ZIPs

B

Longmeadow

2 ZIPs

B

Westfield

2 ZIPs

B

West Springfield

2 ZIPs

B

Dalton

2 ZIPs

B

Stockbridge

2 ZIPs

B

Greenfield

2 ZIPs

B

Westminster

2 ZIPs

C

Shrewsbury

2 ZIPs

C

Burlington

2 ZIPs

C

Billerica

2 ZIPs

D

North Reading

2 ZIPs

C

Gloucester

2 ZIPs

C

City A-Z Directory — Massachusetts

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

A
AbingtonAccordActonAcushnetAdamsAgawamAllstonAmesburyAmherstAndoverArlingtonArlington HeightsAshburnhamAshbyAshfieldAshlandAshley FallsAssonetAtholAttleboroAttleboro FallsAuburnAuburndaleAvonAyer
B
Babson ParkBaldwinvilleBarnstableBarreBecketBedfordBelchertownBellinghamBelmontBerkleyBerkshireBerlinBernardstonBeverlyBillericaBlackstoneBlandfordBoltonBondsvilleBostonBoxboroughBoxfordBoylstonBraintreeBrant RockBrewsterBridgewaterBrightonBrimfieldBrocktonBrookfieldBrooklineBrookline VillageBryantvilleBucklandBurlingtonBuzzards BayByfield
C
CambridgeCantonCarlisleCarverCataumetCentervilleCharlemontCharlestownCharltonCharlton CityCharlton DepotChartleyChathamChelmsfordChelseaCherry ValleyCheshireChesterChesterfieldChestnut HillChicopeeChilmarkClintonCohassetColrainConcordConwayCotuitCummaquidCummingtonCuttyhunk
D
DaltonDanversDartmouthDedhamDeerfieldDennisDennis PortDevensDightonDorchesterDorchester CenterDouglasDoverDracutDruryDudleyDunstableDuxbury
E
East BostonEast BridgewaterEast BrookfieldEast DennisEast FalmouthEast FreetownEast LongmeadowEast OrleansEast OtisEast SandwichEast TauntonEast TempletonEast WalpoleEast WarehamEast WeymouthEasthamEasthamptonEastonEdgartownElmwoodErvingEssexEverett
F
FairhavenFall RiverFalmouthFayvilleFeeding HillsFiskdaleFitchburgFlorenceForestdaleFoxboroFraminghamFranklin
G
GardnerGeorgetownGilbertvilleGillGlendaleGloucesterGoshenGraftonGranbyGranvilleGreat BarringtonGreen HarborGreenbushGreenfieldGrotonGroveland
H
HadleyHalifaxHamiltonHampdenHanoverHanscom AfbHansonHardwickHarvardHarwichHarwich PortHatfieldHathorneHaverhillHaydenvilleHeathHinghamHinsdaleHolbrookHoldenHollandHollistonHolyokeHopedaleHopkintonHousatonicHubbardstonHudsonHullHumarockHuntingtonHyannisHyannis PortHyde Park
I
Indian OrchardIpswich
J
Jamaica PlainJefferson
K
Kingston
L
Lake PleasantLakevilleLancasterLanesboroLawrenceLeeLeedsLeicesterLenoxLenox DaleLeominsterLeverettLexingtonLincolnLinwoodLittletonLongmeadowLowellLudlowLunenburgLynnLynnfield
M
MaldenManchaugManchesterManometMansfieldMarbleheadMarionMarlboroughMarshfieldMarshfield HillsMarstons MillsMashpeeMattapanMattapoisettMaynardMedfieldMedfordMedwayMelroseMendonMenemshaMerrimacMethuenMiddleboroMiddlefieldMiddletonMilfordMill RiverMillburyMillers FallsMillisMillvilleMiltonMilton VillageMinotMonponsettMonroe BridgeMonsonMontagueMontereyMonument Beach
N
NahantNantucketNatickNeedhamNeedham HeightsNew BedfordNew BraintreeNew SalemNew TownNewburyNewburyportNewtonNewton CenterNewton HighlandsNewton Lower FallsNewton Upper FallsNewtonvilleNonantumNorfolkNorth AdamsNorth AmherstNorth AndoverNorth AttleboroNorth BillericaNorth BrookfieldNorth CarverNorth ChathamNorth ChelmsfordNorth DartmouthNorth DightonNorth EasthamNorth EastonNorth EgremontNorth FalmouthNorth GraftonNorth HatfieldNorth MarshfieldNorth OxfordNorth PembrokeNorth ReadingNorth ScituateNorth TruroNorth UxbridgeNorth WalthamNorth WeymouthNorthamptonNorthboroughNorthbridgeNorthfieldNortonNorwellNorwoodNutting Lake
O
Oak BluffsOakhamOcean BluffOnsetOrangeOrleansOstervilleOtisOxford
P
PalmerPaxtonPeabodyPembrokePepperellPetershamPinehurstPittsfieldPlainfieldPlainvillePlymouthPlymptonPocassetPrides CrossingPrincetonProvincetown
Q
Quincy
R
RandolphRaynhamRaynham CenterReadingReadvilleRehobothRevereRichmondRochdaleRochesterRocklandRockportRoslindaleRoweRowleyRoxburyRoxbury CrossingRoyalstonRussellRutland
S
SagamoreSagamore BeachSalemSalisburySandisfieldSandwichSaugusSavoyScituateSeekonkSharonSheffieldShelburne FallsSheldonvilleSherbornShirleyShrewsburyShutesburySiasconsetSomersetSomervilleSouth BarreSouth CarverSouth ChathamSouth DartmouthSouth DeerfieldSouth DennisSouth EastonSouth EgremontSouth GraftonSouth HadleySouth HamiltonSouth HarwichSouth LancasterSouth LeeSouth OrleansSouth WalpoleSouth WellfleetSouth WeymouthSouth YarmouthSouthamptonSouthboroughSouthbridgeSouthfieldSouthwickSpencerSpringfieldSterlingStill RiverStockbridgeStonehamStoughtonStowSturbridgeSudburySunderlandSuttonSwampscottSwansea
T
TauntonTempletonTewksburyThorndikeThree RiversTopsfieldTownsendTruroTurners FallsTyngsboroTyringham
U
UptonUxbridge
V
Village Of Nagog WoodsVineyard Haven
W
WabanWakefieldWalesWalpoleWalthamWareWarehamWarrenWarwickWatertownWaverleyWaylandWebsterWellesleyWellesley HillsWellfleetWendellWendell DepotWenhamWest BarnstableWest BoxfordWest BoylstonWest BridgewaterWest BrookfieldWest ChathamWest ChesterfieldWest DennisWest FalmouthWest GrotonWest HarwichWest HatfieldWest HyannisportWest MedfordWest MillburyWest NewburyWest NewtonWest RoxburyWest SpringfieldWest StockbridgeWest TisburyWest TownsendWest WarehamWest WarrenWest YarmouthWestboroughWestfieldWestfordWestminsterWestonWestportWestport PointWestwoodWeymouthWhatelyWheelwrightWhite Horse BeachWhitinsvilleWhitmanWilbrahamWilliamsburgWilliamstownWilmingtonWinchendonWinchesterWindsorWinthropWoburnWoods HoleWoodvilleWorcesterWoronocoWorthingtonWrentham
Y
Yarmouth Port

🏆 Highest Rated ZIP Codes in Massachusetts

02228East Boston
99/100
A
02112Boston
92/100
A
02117Boston
92/100
A
02123Boston
92/100
A
02133Boston
92/100
A

⚠ Lowest Rated ZIP Codes in Massachusetts

02148Malden
33/100
F
02155Medford
36/100
F
02726Somerset
37/100
F
01074South Barre
40/100
D
01366Petersham
40/100
D

Common Drinking Water Contaminants in Massachusetts

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

Total Trihalomethanes (TTHM)Haloacetic Acids (HAA5)Consumer Confidence Report RuleStage 1 DBP RuleE. coliChlorine residualContaminant 1011Stage 2 DBP 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 — Massachusetts Drinking Water

Is tap water generally safe to drink in Massachusetts?+
Yes, for the majority of residents, tap water in Massachusetts is treated and regulated. However, compliance varies by city. State-wide, 29 ZIP codes receive an "A" grade, while 3 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 Massachusetts?+
Residents in Massachusetts can test their tap or well water by contacting laboratories certified by Massachusetts Department of Environmental Protection 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 Massachusetts?+
The primary issues include managing 148 health-based violations state-wide and resolving infrastructure age. 68.6% 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 Massachusetts?+
Drinking water in Massachusetts is regulated by Massachusetts Department of Environmental Protection under a primacy agreement with the U.S. EPA.
Where does Massachusetts get its drinking water?+
Approximately 60% of monitored areas in Massachusetts 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 Massachusetts?+
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 695 ZIP Codes in Massachusetts

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

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All 695 ZIP codes in Massachusetts are actively monitored under the EPA Safe Drinking Water Act.