WaterQ

City Water Quality Rankings in Ohio

431 cities ranked by drinking water quality.

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Popular city water quality comparisons

Amherst, OH vs Avon Lake, OH Compare → Bainbridge Twp, OH vs Beavercreek, OH Compare → Bedford, OH vs Blacklick, OH Compare → Brewster, OH vs Canal Fulton, OH Compare →

Trending Cities

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#97
Loveland
County, OH
98 A
#98
Lowell
County, OH
98 A
#99
Magnolia
County, OH
98 A
#100
Mechanicsburg
County, OH
98 A
#101
Milan
County, OH
98 A
#102
Millersburg
County, OH
98 A
#103
New Miami
County, OH
98 A
#104
Niles
County, OH
98 A
#105
Pioneer
County, OH
98 A
#106
Piqua
County, OH
98 A
#107
Pleasant Hill
County, OH
98 A
#108
Port Clinton
County, OH
98 A
#109
Reynoldsburg
County, OH
98 A
#110
Rossburg
County, OH
98 A
#111
Seven Mile
County, OH
98 A
#112
Silver Lake
County, OH
98 A
#113
Struthers
County, OH
98 A
#114
Uniontown
County, OH
98 A
#115
Versailles
County, OH
98 A
#116
Wellington
County, OH
98 A
#117
Whitehouse
County, OH
98 A
#118
Belle Valley
County, OH
97 A
#119
Bradford
County, OH
97 A
#120
Bremen
County, OH
97 A

Frequently Asked Questions

How are city water quality rankings calculated in Ohio?

WaterQ city rankings are based on EPA SDWIS data across local public water systems, including contaminant detections, compliance violations, and recency-weighted score signals.

Can I compare two cities in Ohio?

Yes. Use the city comparison links on this page or open the Compare tool to evaluate two cities side by side on score, grade, and water system coverage.

How often does WaterQ refresh city data?

City-level metrics refresh when new EPA data is processed. Check city pages for latest score and violation context.

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