Pennsylvania

It depends on the town. 288 of 334 listed water systems in Pennsylvania, United States are low risk (86.2%).

• 288Low
• 42Medium
• 4High
• 0Critical

• AkronLow risk
• AlbionLow risk
• Aliquippa2 systems · includes medium risk
• Allentown4 systems · low risk
• Allison ParkLow risk
• AltoonaMedium risk
• AmblerLow risk
• AmbridgeLow risk
• AshlandLow risk
• BadenLow risk
• Bcwsa Main Lower SouthMedium risk
• Bear Valley Joint AuthLow risk
• Beaver2 systems · low risk
• Beaver Falls2 systems · includes medium risk
• BedfordLow risk
• Belle Vernon2 systems · includes medium risk
• Bellefonte2 systems · includes medium risk
• Bethlehem2 systems · includes medium risk
• BirdsboroLow risk
• Blairsville2 systems · low risk
• BlandonLow risk
• BloomsburgLow risk
• Boiling SpringsLow risk
• BoyertownMedium risk
• BrackenridgeLow risk
• BradfordHigh risk
• BrockwayLow risk
• BrookvilleLow risk
• BrownstownMedium risk
• Bryn Mawr12 systems · includes medium risk
• Buckingham Twp Cold SpringLow risk
• Buckingham Twp FurlongLow risk
• Buffalo Twp Mun Auth FreeportLow risk
• Caernarvon Twp AuthLow risk
• Carlisle3 systems · low risk
• CatasauquaLow risk
• Chambersburg2 systems · low risk
• CharleroiMedium risk
• ChesterLow risk
• Clarks Summit3 systems · low risk
• ClearfieldLow risk
• CoatesvilleLow risk
• Columbia2 systems · low risk
• ConnellsvilleLow risk
• Cooper Twp AuthLow risk
• CoraopolisLow risk
• CornwallLow risk
• CorryLow risk
• Cranberry TwpMedium risk
• Creswell Heights Jt AuthLow risk
• CurwensvilleLow risk
• DallastownLow risk
• DanvilleLow risk
• DavidsvilleLow risk
• Denver2 systems · includes medium risk
• DerryLow risk
• DillsburgLow risk
• DoverLow risk
• DowningtownLow risk
• Doylestown2 systems · low risk
• DuBoisLow risk
• DunbarLow risk
• DuquesneHigh risk
• East GreenvilleLow risk
• East PetersburgLow risk
• East Stroudsburg2 systems · includes medium risk
• EastonLow risk
• EbensburgLow risk
• EdinboroLow risk
• Elizabethtown2 systems · low risk
• EmmausMedium risk
• EmporiumLow risk
• EphrataLow risk
• Erie2 systems · low risk
• FairchanceLow risk
• Fairless HillsLow risk
• Fairview2 systems · includes medium risk
• Findlay Twp AuthMedium risk
• FleetwoodLow risk
• Ford CityLow risk
• FranklinLow risk
• FreelandLow risk
• GettysburgLow risk
• GibsoniaLow risk
• GirardLow risk
• GreencastleLow risk
• Greensburg3 systems · low risk
• Grove CityLow risk
• HamburgLow risk
• HanoverLow risk
• Harmony Boro AuthLow risk
• Harrisburg7 systems · includes medium risk
• HazletonLow risk
• HellertownLow risk
• Hemlock Farms (main)Medium risk
• HollidaysburgLow risk
• Homer CityLow risk
• HonesdaleLow risk
• HorshamLow risk
• HoutzdaleLow risk
• Hummelstown2 systems · low risk
• HuntingdonLow risk
• Indian Creek Valley AuthLow risk
• IndianaLow risk
• Jersey ShoreLow risk
• Johnstown4 systems · includes medium risk
• Kennett SquareLow risk
• Kittanning Suburb Jt AutLow risk
• KutztownLow risk
• LancasterMedium risk
• LandisvilleMedium risk
• LansdaleLow risk
• LansfordLow risk
• LatrobeMedium risk
• LebanonLow risk
• LeetsdaleMedium risk
• LehightonLow risk
• LeolaLow risk
• LevittownLow risk
• Lititz2 systems · low risk
• LittlestownLow risk
• Lock HavenLow risk
• Mahanoy CityLow risk
• ManheimLow risk
• MansfieldLow risk
• MarsLow risk
• MasontownLow risk
• McAdooLow risk
• MeadvilleLow risk
• Mechanicsburg3 systems · low risk
• MiddletownLow risk
• MifflinburgLow risk
• MifflintownLow risk
• Mill HallLow risk
• MillersburgLow risk
• MillersvilleLow risk
• MilroyLow risk
• Milton2 systems · low risk
• MinersvilleLow risk
• MonacaLow risk
• MonroevilleLow risk
• MontoursvilleLow risk
• Moon Twp Muni AuthMedium risk
• MorrisvilleHigh risk
• Mount JoyLow risk
• Mount UnionMedium risk
• Mountaintop Reg AuthLow risk
• MyerstownLow risk
• Natrona Heights2 systems · includes medium risk
• New Castle8 systems · low risk
• New FreedomLow risk
• New HollandLow risk
• New KensingtonLow risk
• New OxfordLow risk
• New PhiladelphiaLow risk
• New WilmingtonLow risk
• NewmanstownLow risk
• NewtownLow risk
• Norristown2 systems · low risk
• North East2 systems · low risk
• North Wales2 systems · low risk
• NorthamptonLow risk
• Northern CambriaLow risk
• OakdaleMedium risk
• OakmontLow risk
• Oil CityLow risk
• OxfordLow risk
• Pa Amer -pittsburghLow risk
• Pa American DillinerMedium risk
• Pa-american -brownsvilleLow risk
• PalmertonLow risk
• Pawc Penn EstatesLow risk
• Pawc PoconoLow risk
• Pawc Saw Creek EstatesLow risk
• Penn State UnivLow risk
• PerkasieLow risk
• Petroleum Valley RwaLow risk
• PhiladelphiaLow risk
• PhilipsburgLow risk
• PhoenixvilleMedium risk
• Pittsburgh5 systems · includes medium risk
• PortageMedium risk
• PottstownLow risk
• PottsvilleLow risk
• Quakertown3 systems · low risk
• Reading5 systems · includes medium risk
• Red LionLow risk
• RichboroLow risk
• RidgwayLow risk
• Roamingwood andLow risk
• RochesterLow risk
• Saint MarysLow risk
• SayreLow risk
• Schuylkill HavenLow risk
• SchwenksvilleLow risk
• Scranton5 systems · low risk
• SelinsgroveLow risk
• SellersvilleLow risk
• SenecaLow risk
• SewickleyMedium risk
• Shamokin2 systems · includes medium risk
• Sharon4 systems · low risk
• SharpsvilleLow risk
• ShippensburgLow risk
• ShrewsburyLow risk
• SlatingtonLow risk
• Slippery RockLow risk
• Somerset2 systems · low risk
• Southwestern Pa AuthLow risk
• Spring CityLow risk
• SpringdaleLow risk
• State College2 systems · low risk
• StewartstownLow risk
• SunburyLow risk
• TamaquaMedium risk
• TarentumMedium risk
• TelfordLow risk
• TitusvilleLow risk
• Tobyhanna Army DepotLow risk
• TowandaMedium risk
• TrappeLow risk
• Tri Cnty Jt Muni AuthHigh risk
• TunkhannockLow risk
• TyroneLow risk
• Union CityMedium risk
• Uniontown2 systems · low risk
• Upper Saucon TwpLow risk
• Upper Southampton Mun AuthLow risk
• Valley ViewLow risk
• WarminsterLow risk
• WarrenLow risk
• Warwick Twp & AuthLow risk
• Waynesboro2 systems · low risk
• WellsboroLow risk
• WernersvilleLow risk
• West GroveLow risk
• West ReadingLow risk
• West ViewLow risk
• White HavenLow risk
• WhitehallLow risk
• Wilkes-Barre2 systems · low risk
• WilkinsburgMedium risk
• WilliamsportLow risk
• WindberLow risk
• WrightsvilleLow risk
• WyomissingLow risk
• YardleyLow risk
• York3 systems · low risk
• ZelienopleLow 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.