Ohio

It depends on the town. 266 of 314 listed water systems in Ohio, United States are low risk (84.7%).

• 266Low
• 45Medium
• 3High
• 0Critical

• AdaLow risk
• AllianceLow risk
• AmherstLow risk
• AndoverLow risk
• ArchboldLow risk
• AshlandLow risk
• AshtabulaLow risk
• AshvilleLow risk
• Athens2 systems · low risk
• AuroraLow risk
• AvonLow risk
• Avon LakeLow risk
• BaltimoreLow risk
• Barnesville2 systems · includes medium risk
• BataviaLow risk
• Beavercreek2 systems · low risk
• BedfordLow risk
• BellaireLow risk
• BellbrookMedium risk
• BellefontaineMedium risk
• BellevueLow risk
• BelpreMedium risk
• BereaLow risk
• BexleyLow risk
• Blanchester VillageLow risk
• BlufftonLow risk
• Bowling Green6 systems · includes medium risk
• BrookvilleLow risk
• BryanLow risk
• Buckeye LakeLow risk
• BucyrusMedium risk
• ByesvilleMedium risk
• CadizMedium risk
• CaldwellLow risk
• Cambridge2 systems · includes medium risk
• Canal FultonLow risk
• Canal WinchesterLow risk
• CanfieldLow risk
• Canton2 systems · low risk
• CareyLow risk
• CedarvilleLow risk
• CelinaLow risk
• Chagrin FallsLow risk
• ChardonLow risk
• Chillicothe2 systems · low risk
• Cincinnati3 systems · low risk
• Circleville2 systems · low risk
• ClevelandLow risk
• ClevesLow risk
• ClydeLow risk
• ColdwaterLow risk
• ColumbianaLow risk
• Columbus5 systems · includes medium risk
• Commercial PointLow risk
• ConneautLow risk
• CortlandLow risk
• CoshoctonLow risk
• CrestlineLow risk
• CrooksvilleLow risk
• Cuyahoga FallsMedium risk
• Dayton2 systems · low risk
• DefianceLow risk
• Delaware2 systems · low risk
• DelphosLow risk
• DeltaMedium risk
• DennisonLow risk
• DoverLow risk
• East LiverpoolLow risk
• East PalestineLow risk
• EatonLow risk
• ElidaLow risk
• ElyriaLow risk
• EnglewoodLow risk
• FairbornLow risk
• FindlayLow risk
• FostoriaLow risk
• FranklinLow risk
• Franklin Furnace2 systems · low risk
• FremontLow risk
• Gahanna CityLow risk
• GalionLow risk
• Gallipolis2 systems · low risk
• GenevaLow risk
• GeorgetownLow risk
• GermantownLow risk
• GirardLow risk
• GranvilleMedium risk
• GreenfieldLow risk
• GreenvilleLow risk
• Hamilton4 systems · low risk
• HarrisonLow risk
• HeathLow risk
• HicksvilleLow risk
• Hillsboro2 systems · low risk
• HubbardLow risk
• Huber HeightsLow risk
• HudsonMedium risk
• Huron3 systems · low risk
• Ironton2 systems · includes medium risk
• Jackson2 systems · includes medium risk
• Jefferson2 systems · low risk
• Jefferson andLow risk
• JohnstownLow risk
• Kent2 systems · includes medium risk
• KentonMedium risk
• Kettering2 systems · low risk
• LagrangeLow risk
• LakewoodLow risk
• Lancaster2 systems · low risk
• Leading Creek ConservancyMedium risk
• Lebanon3 systems · low risk
• LexingtonLow risk
• LimaMedium risk
• Little HockingLow risk
• LocklandMedium risk
• LoganLow risk
• LorainLow risk
• LordstownLow risk
• LouisvilleLow risk
• LovelandLow risk
• LucasvilleLow risk
• MansfieldMedium risk
• Marietta2 systems · low risk
• Marion2 systems · low risk
• Martins FerryLow risk
• MarysvilleLow risk
• MassillonLow risk
• MaumeeLow risk
• MaysvilleMedium risk
• McDonaldLow risk
• Medina2 systems · low risk
• Medina /southernLow risk
• Mentor2 systems · low risk
• MiamisburgLow risk
• MilfordLow risk
• MinervaLow risk
• Mingo JunctionLow risk
• Monroe2 systems · includes medium risk
• MontpelierMedium risk
• Morrow2 systems · includes high risk
• Mount GileadLow risk
• Mount OrabLow risk
• Mount Vernon2 systems · low risk
• Munroe FallsLow risk
• NapoleonLow risk
• NavarreLow risk
• NelsonvilleMedium risk
• New CarlisleLow risk
• New LebanonLow risk
• New LexingtonMedium risk
• New PhiladelphiaLow risk
• New RichmondLow risk
• New WaterfordLow risk
• NewarkLow risk
• NewcomerstownLow risk
• Newton FallsLow risk
• NilesLow risk
• North BaltimoreLow risk
• North Canton CityLow risk
• North RidgevilleLow risk
• NorthwestLow risk
• NortonLow risk
• Norwalk4 systems · low risk
• NorwoodLow risk
• Oak HarborLow risk
• Oak HillMedium risk
• OakwoodLow risk
• OberlinMedium risk
• Odrc-pickaway CorrectionHigh risk
• OntarioLow risk
• OregonLow risk
• OttawaMedium risk
• Oxford CityLow risk
• Painesville2 systems · low risk
• Pataskala2 systems · low risk
• PauldingMedium risk
• PickeringtonLow risk
• PiquaLow risk
• Port Clinton2 systems · low risk
• PortsmouthLow risk
• Put-in-bay VillageLow risk
• Ravenna2 systems · includes medium risk
• ReadingLow risk
• ReynoldsburgLow risk
• RipleyLow risk
• RittmanLow risk
• Saint ClairsvilleMedium risk
• Saint MarysMedium risk
• SanduskyLow risk
• SebringLow risk
• ShadysideLow risk
• Sheffield LakeLow risk
• Sheffield VillageLow risk
• ShelbyLow risk
• SidneyMedium risk
• South LebanonLow risk
• South PointLow risk
• SpringboroLow risk
• Springfield3 systems · low risk
• SteubenvilleHigh risk
• StowMedium risk
• StreetsboroLow risk
• Struthers2 systems · low risk
• Sunday Creek ValleyLow risk
• SwantonLow risk
• SylvaniaLow risk
• TallmadgeLow risk
• Tcmsd-wilkshire HillsLow risk
• Tipp CityLow risk
• ToledoLow risk
• TorontoLow risk
• Trenton2 systems · low risk
• TrotwoodLow risk
• TroyLow risk
• Troy CityLow risk
• Trumbull . - Bazetta/championLow risk
• Trumbull . - Howland TwpLow risk
• Trumbull . - SoutheastLow risk
• Tuppers Plains/chesterLow risk
• Union CityLow risk
• Upper SanduskyLow risk
• UrbanaMedium risk
• Van WertMedium risk
• Vandalia2 systems · low risk
• VermilionLow risk
• WadsworthLow risk
• WapakonetaLow risk
• WarrenLow risk
• Washington Court House2 systems · low risk
• WatervilleLow risk
• WauseonMedium risk
• Waverly2 systems · low risk
• WaynesvilleMedium risk
• WellingtonLow risk
• WellstonLow risk
• WellsvilleMedium risk
• West Carrollton CityMedium risk
• West JeffersonMedium risk
• West MiltonLow risk
• West UnionLow risk
• Westerville4 systems · includes medium risk
• Whitehouse2 systems · low risk
• WillardMedium risk
• WilmingtonLow risk
• Wintersville2 systems · low risk
• WoosterLow risk
• XeniaLow risk
• Yellow SpringsLow risk
• Youngstown2 systems · low risk
• Zanesville2 systems · low 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.