Ohio Water Quality Reports
Comprehensive water quality data for 646 cities across Ohio. View EPA-verified contaminant levels and get filter recommendations.
646
Cities
14
Safe
411
Monitor
221
At Risk
Water Quality by County
Explore aggregated water quality scores across Ohio counties. Scores are calculated based on EPA data and weighted by population.
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Data from 600 cities serving 65,390,881 people across 85 counties.
Common Contaminants in Ohio
632 cities in Ohio have at least one contaminant above EPA health guidelines.
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Upload my testCities in Ohio
Reynoldsburg
People Served1342K
Contaminants Tested324
Above Guidelines4
View Report โ
Gahanna
People Served1322K
Contaminants Tested229
Above Guidelines4
View Report โ
Columbus
People Served1321K
Contaminants Tested478
Above Guidelines4
View Report โ
Pickerington
People Served1312K
Contaminants Tested281
Above Guidelines4
View Report โ
Bratenahl
People Served1309K
Contaminants Tested112
Above Guidelines4
View Report โ
Cleveland
People Served1309K
Contaminants Tested112
Above Guidelines4
View Report โ
Cuyahoga Heights
People Served1309K
Contaminants Tested112
Above Guidelines4
View Report โ
Fairview Park
People Served1309K
Contaminants Tested112
Above Guidelines4
View Report โ
Linndale
People Served1309K
Contaminants Tested112
Above Guidelines4
View Report โ
Newburgh Heights
People Served1309K
Contaminants Tested112
Above Guidelines4
View Report โ
Pataskala
People Served1299K
Contaminants Tested323
Above Guidelines4
View Report โ
Brice
People Served1293K
Contaminants Tested215
Above Guidelines4
View Report โ
Bexley
People Served1292K
Contaminants Tested157
Above Guidelines4
View Report โ
Canal Winchester
People Served1287K
Contaminants Tested183
Above Guidelines4
View Report โ
Grandview Heights
People Served1286K
Contaminants Tested158
Above Guidelines4
View Report โ
Minerva Park
People Served1285K
Contaminants Tested210
Above Guidelines4
View Report โ
Groveport
People Served1284K
Contaminants Tested262
Above Guidelines4
View Report โ
Obetz
People Served1282K
Contaminants Tested214
Above Guidelines4
View Report โ
Lockbourne
People Served1278K
Contaminants Tested135
Above Guidelines4
View Report โ
Dublin
People Served1278K
Contaminants Tested183
Above Guidelines4
View Report โ
Blacklick Estates
People Served1278K
Contaminants Tested120
Above Guidelines4
View Report โ
Grove City
People Served1278K
Contaminants Tested120
Above Guidelines4
View Report โ
Hilliard
People Served1278K
Contaminants Tested120
Above Guidelines4
View Report โ
Lincoln Village
People Served1278K
Contaminants Tested120
Above Guidelines4
View Report โ
Marble Cliff
People Served1278K
Contaminants Tested120
Above Guidelines4
View Report โ
New Albany
People Served1278K
Contaminants Tested120
Above Guidelines4
View Report โ
Riverlea
People Served1278K
Contaminants Tested120
Above Guidelines4
View Report โ
Upper Arlington
People Served1278K
Contaminants Tested120
Above Guidelines4
View Report โ
Urbancrest
People Served1278K
Contaminants Tested120
Above Guidelines4
View Report โ
Valleyview
People Served1278K
Contaminants Tested120
Above Guidelines4
View Report โ
Whitehall
People Served1278K
Contaminants Tested120
Above Guidelines4
View Report โ
Worthington
People Served1278K
Contaminants Tested120
Above Guidelines4
View Report โ
Norwood
People Served770K
Contaminants Tested148
Above Guidelines5
View Report โ
Madison Place
People Served765K
Contaminants Tested178
Above Guidelines5
View Report โ
Arlington Heights
People Served754K
Contaminants Tested172
Above Guidelines5
View Report โ
Addyston
People Served751K
Contaminants Tested172
Above Guidelines5
View Report โ
Cincinnati
People Served750K
Contaminants Tested110
Above Guidelines5
View Report โ
Delshire
People Served750K
Contaminants Tested110
Above Guidelines5
View Report โ
Elmwood Place
People Served750K
Contaminants Tested110
Above Guidelines5
View Report โ
Fairfax
People Served750K
Contaminants Tested110
Above Guidelines5
View Report โ
Golf Manor
People Served750K
Contaminants Tested110
Above Guidelines5
View Report โ
Salem Heights
People Served750K
Contaminants Tested110
Above Guidelines5
View Report โ
Silverton
People Served750K
Contaminants Tested110
Above Guidelines5
View Report โ
St. Bernard
People Served750K
Contaminants Tested110
Above Guidelines5
View Report โ
Toledo
People Served480K
Contaminants Tested206
Above Guidelines4
View Report โ
Ottawa Hills
People Served480K
Contaminants Tested108
Above Guidelines4
View Report โ
West Carrollton
People Served384K
Contaminants Tested298
Above Guidelines5
View Report โ
Oakwood
People Served381K
Contaminants Tested361
Above Guidelines5
View Report โ
Trotwood
People Served381K
Contaminants Tested277
Above Guidelines5
View Report โ
Dayton
People Served372K
Contaminants Tested237
Above Guidelines5
View Report โ
Drexel
People Served372K
Contaminants Tested237
Above Guidelines5
View Report โ
Kettering
People Served372K
Contaminants Tested293
Above Guidelines5
View Report โ
Moraine
People Served372K
Contaminants Tested199
Above Guidelines5
View Report โ
Beavercreek
People Served331K
Contaminants Tested420
Above Guidelines5
View Report โ
Cuyahoga Falls
People Served330K
Contaminants Tested421
Above Guidelines3
View Report โ
Riverside
People Served289K
Contaminants Tested198
Above Guidelines5
View Report โ
Akron
People Served281K
Contaminants Tested418
Above Guidelines3
View Report โ
Sawyerwood
People Served280K
Contaminants Tested167
Above Guidelines3
View Report โ
Portage Lakes
People Served280K
Contaminants Tested166
Above Guidelines2
View Report โ
Miamisburg
People Served256K
Contaminants Tested381
Above Guidelines5
View Report โ
Centerville
People Served231K
Contaminants Tested78
Above Guidelines5
View Report โ
Hamilton
People Served219K
Contaminants Tested283
Above Guidelines3
View Report โ
Delaware
People Served195K
Contaminants Tested204
Above Guidelines3
View Report โ
Huber Heights
People Served184K
Contaminants Tested222
Above Guidelines5
View Report โ
Vandalia
People Served165K
Contaminants Tested219
Above Guidelines4
View Report โ
Fairfield
People Served158K
Contaminants Tested117
Above Guidelines3
View Report โ
Bellbrook
People Served158K
Contaminants Tested139
Above Guidelines5
View Report โ
Millville
People Served157K
Contaminants Tested184
Above Guidelines3
View Report โ
Clayton
People Served154K
Contaminants Tested219
Above Guidelines4
View Report โ
Englewood
People Served154K
Contaminants Tested219
Above Guidelines4
View Report โ
Ostrander
People Served150K
Contaminants Tested67
Above Guidelines3
View Report โ
Powell
People Served150K
Contaminants Tested67
Above Guidelines3
View Report โ
Youngstown
People Served148K
Contaminants Tested134
Above Guidelines3
View Report โ
Shiloh
People Served141K
Contaminants Tested221
Above Guidelines5
View Report โ
Fort McKinley
People Served141K
Contaminants Tested159
Above Guidelines5
View Report โ
Wright-Patterson AFB
People Served140K
Contaminants Tested121
Above Guidelines4
View Report โ
Amelia
People Served133K
Contaminants Tested114
Above Guidelines4
View Report โ
Hunter
People Served125K
Contaminants Tested320
Above Guidelines5
View Report โ
New Miami
People Served117K
Contaminants Tested101
Above Guidelines2
View Report โ
Lebanon
People Served116K
Contaminants Tested563
Above Guidelines5
View Report โ
Canton
People Served116K
Contaminants Tested690
Above Guidelines3
View Report โ
Seven Mile
People Served115K
Contaminants Tested203
Above Guidelines3
View Report โ
Beckett Ridge
People Served113K
Contaminants Tested39
Above Guidelines2
View Report โ
Williamsdale
People Served113K
Contaminants Tested39
Above Guidelines2
View Report โ
Massillon
People Served96K
Contaminants Tested95
Above Guidelines2
View Report โ
Perry Heights
People Served96K
Contaminants Tested95
Above Guidelines2
View Report โ
South Lebanon
People Served82K
Contaminants Tested401
Above Guidelines4
View Report โ
Oberlin
People Served82K
Contaminants Tested134
Above Guidelines4
View Report โ
Springfield
People Served80K
Contaminants Tested681
Above Guidelines3
View Report โ
Waite Hill
People Served78K
Contaminants Tested68
Above Guidelines3
View Report โ
Grafton
People Served76K
Contaminants Tested53
Above Guidelines3
View Report โ
Warren
People Served76K
Contaminants Tested271
Above Guidelines4
View Report โ
LaGrange
People Served76K
Contaminants Tested54
Above Guidelines2
View Report โ
Pheasant Run
People Served75K
Contaminants Tested55
Above Guidelines2
View Report โ
Mentor
People Served75K
Contaminants Tested100
Above Guidelines3
View Report โ
Medina
People Served73K
Contaminants Tested192
Above Guidelines3
View Report โ
Painesville
People Served72K
Contaminants Tested135
Above Guidelines3
View Report โ
Morgandale
People Served71K
Contaminants Tested145
Above Guidelines4
View Report โ
Lorain
People Served69K
Contaminants Tested110
Above Guidelines4
View Report โ
Elyria
People Served68K
Contaminants Tested65
Above Guidelines3
View Report โ
Showing top 100 of 646 cities by population.
Use the search box above to find any city in Ohio.
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