WaterQ

City Water Quality Rankings in Ohio

417 cities ranked by drinking water quality.

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Popular city water quality comparisons

Amherst, OH vs Aurora, OH Compare → Austintown, OH vs Bainbridge Twp, OH Compare → Blacklick, OH vs Brewster, OH Compare → Canal Fulton, OH vs Eaton, OH Compare →

Trending Cities

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#97
Newark
County, OH
97 A
#98
Painesville
County, OH
97 A
#99
Pandora
County, OH
97 A
#100
Piqua
County, OH
97 A
#101
Portsmouth
County, OH
97 A
#102
Sandusky
County, OH
97 A
#103
Sheffield Lake
County, OH
97 A
#104
Springboro
County, OH
97 A
#105
Whitehouse
County, OH
97 A
#106
Ansonia
County, OH
96 A
#107
Beach City
County, OH
96 A
#108
Buckeye Lake
County, OH
96 A
#109
Casstown
County, OH
96 A
#110
Coldwater
County, OH
96 A
#111
Crestline
County, OH
96 A
#112
East Palestine
County, OH
96 A
#113
Gallipolis
County, OH
96 A
#114
Harrisville
County, OH
96 A
#115
Hebron
County, OH
96 A
#116
Maumee
County, OH
96 A
#117
Middlefield
County, OH
96 A
#118
Mount Orab
County, OH
96 A
#119
New Bremen
County, OH
96 A
#120
Newton Falls
County, OH
96 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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