Massachusetts

It depends on the town. 233 of 260 listed water systems in Massachusetts, United States are low risk (89.6%).

• 233Low
• 21Medium
• 6High
• 0Critical

• AbingtonMedium risk
• ActonLow risk
• AcushnetLow risk
• AdamsLow risk
• AgawamLow risk
• AmesburyLow risk
• AmherstMedium risk
• AndoverHigh risk
• ArlingtonLow risk
• Ashburnham2 systems · low risk
• AshlandLow risk
• AtholLow risk
• AttleboroLow risk
• AuburnLow risk
• AvonLow risk
• AyerLow risk
• Barnstable2 systems · low risk
• Bedford2 systems · low risk
• BellinghamLow risk
• BelmontLow risk
• Beverly2 systems · includes medium risk
• BillericaLow risk
• BlackstoneLow risk
• Boston2 systems · low risk
• Bourne2 systems · low risk
• BoylstonLow risk
• Braintree2 systems · low risk
• BrewsterLow risk
• BridgewaterLow risk
• BrocktonLow risk
• BrooklineLow risk
• BurlingtonLow risk
• Buzzards BayLow risk
• CambridgeLow risk
• CantonLow risk
• ChathamLow risk
• Chelmsford2 systems · includes medium risk
• ChelseaLow risk
• ChicopeeLow risk
• ClintonMedium risk
• CohassetHigh risk
• ConcordLow risk
• CotuitLow risk
• DaltonLow risk
• DanversMedium risk
• DartmouthMedium risk
• DedhamLow risk
• DennisLow risk
• DevensLow risk
• Dighton2 systems · includes medium risk
• DouglasLow risk
• Dracut2 systems · low risk
• DudleyLow risk
• DuxburyLow risk
• East BridgewaterLow risk
• East LongmeadowLow risk
• EasthamLow risk
• EasthamptonLow risk
• EastonLow risk
• EdgartownLow risk
• EssexLow risk
• EverettLow risk
• FairhavenLow risk
• Fall RiverLow risk
• Falmouth2 systems · includes high risk
• FitchburgLow risk
• FoxboroughLow risk
• FraminghamLow risk
• FranklinLow risk
• GardnerLow risk
• GeorgetownMedium risk
• GloucesterLow risk
• GraftonLow risk
• Great BarringtonLow risk
• GreenfieldLow risk
• GrotonLow risk
• GrovelandLow risk
• HadleyLow risk
• HalifaxLow risk
• HamiltonLow risk
• HanoverLow risk
• HansonLow risk
• HarwichLow risk
• HaverhillLow risk
• HinghamLow risk
• HolbrookLow risk
• HoldenLow risk
• HollistonLow risk
• HolyokeLow risk
• HopedaleLow risk
• HopkintonLow risk
• HudsonLow risk
• IpswichLow risk
• KingstonLow risk
• LancasterLow risk
• LawrenceLow risk
• LeeLow risk
• LeicesterLow risk
• LenoxLow risk
• LeominsterLow risk
• LexingtonLow risk
• LincolnLow risk
• LittletonLow risk
• LongmeadowMedium risk
• LowellLow risk
• LunenburgLow risk
• LynnLow risk
• Lynnfield2 systems · low risk
• MaldenLow risk
• Manchester-by-the-SeaLow risk
• MansfieldLow risk
• MarbleheadLow risk
• MarionLow risk
• MarlboroughLow risk
• MarshfieldLow risk
• MashpeeLow risk
• Mattapoisett2 systems · low risk
• MaynardMedium risk
• MedfieldLow risk
• MedfordHigh risk
• MedwayLow risk
• MelroseHigh risk
• MerrimacLow risk
• MethuenLow risk
• MiddleboroughLow risk
• MiddletonMedium risk
• MilfordLow risk
• MillburyLow risk
• MillisLow risk
• MiltonLow risk
• MonsonLow risk
• NahantLow risk
• NantucketLow risk
• NatickLow risk
• NeedhamLow risk
• New BedfordLow risk
• NewburyportLow risk
• NewtonLow risk
• NorfolkLow risk
• North AdamsLow risk
• North AndoverLow risk
• North AttleboroLow risk
• North BrookfieldLow risk
• North ReadingLow risk
• NorthamptonLow risk
• NorthboroughLow risk
• NorthbridgeLow risk
• NortonMedium risk
• NorwellLow risk
• NorwoodLow risk
• Oak BluffsLow risk
• OnsetLow risk
• OrangeLow risk
• OrleansLow risk
• OstervilleLow risk
• OxfordLow risk
• PalmerMedium risk
• PaxtonLow risk
• PeabodyLow risk
• Pembroke DpwLow risk
• PepperellLow risk
• PittsfieldLow risk
• PlainvilleMedium risk
• Plymouth2 systems · low risk
• ProvincetownLow risk
• QuincyLow risk
• Randolph2 systems · low risk
• Raynham2 systems · includes medium risk
• ReadingLow risk
• RevereLow risk
• RockportLow risk
• RowleyLow risk
• RutlandLow risk
• SalemLow risk
• SalisburyLow risk
• Sandwich2 systems · low risk
• SaugusLow risk
• ScituateHigh risk
• SeekonkLow risk
• SharonLow risk
• Shirley2 systems · low risk
• ShrewsburyLow risk
• SomersetLow risk
• SomervilleLow risk
• South DeerfieldLow risk
• South Hadley2 systems · low risk
• SouthamptonLow risk
• SouthboroughLow risk
• SouthbridgeLow risk
• SouthwickLow risk
• SpencerLow risk
• SpringfieldMedium risk
• SterlingMedium risk
• StonehamLow risk
• StoughtonLow risk
• SturbridgeLow risk
• SudburyLow risk
• SwampscottLow risk
• SwanseaMedium risk
• TauntonLow risk
• TempletonLow risk
• TewksburyLow risk
• TisburyLow risk
• TopsfieldLow risk
• TownsendLow risk
• Turners FallsLow risk
• TyngsboroughLow risk
• UptonLow risk
• UxbridgeLow risk
• WakefieldLow risk
• WalpoleLow risk
• WalthamLow risk
• WareLow risk
• Wareham FireLow risk
• WatertownLow risk
• WaylandLow risk
• WebsterLow risk
• WellesleyLow risk
• WenhamLow risk
• West BoylstonLow risk
• West BridgewaterLow risk
• West NewburyLow risk
• West SpringfieldLow risk
• WestboroughMedium risk
• WestfieldLow risk
• WestfordLow risk
• WestminsterMedium risk
• WestonLow risk
• WeymouthLow risk
• WhitinsvilleLow risk
• WhitmanLow risk
• WilbrahamLow risk
• WilliamstownLow risk
• WilmingtonLow risk
• WinchendonLow risk
• WinchesterLow risk
• WinthropLow risk
• WoburnLow risk
• WorcesterLow risk
• WrenthamLow risk
• YarmouthLow risk

Covers community water systems serving 3,300 people or more. The rating uses health-based violations of federal drinking-water standards in the last three years, and whether those violations have been fixed. Each system is placed at a town it serves, so positions are approximate.