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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#49
Sycamore
County, OH
100 A
#50
Tipp City
County, OH
100 A
#51
Union
County, OH
100 A
#52
Upper Sandusky
County, OH
100 A
#53
Vienna
County, OH
100 A
#54
W. Alexandria
County, OH
100 A
#55
Wapakoneta
County, OH
100 A
#56
Washington Courthouse
County, OH
100 A
#57
Waterville
County, OH
100 A
#58
West Salem
County, OH
100 A
#59
Wooster
County, OH
100 A
#60
Wpafb
County, OH
100 A
#61
Ansonia
County, OH
99 A
#62
Ashtabula
County, OH
99 A
#63
Chardon
County, OH
99 A
#64
Cincinnati
County, OH
99 A
#65
Columbia Station
County, OH
99 A
#66
Enon
County, OH
99 A
#67
Fayette
County, OH
99 A
#68
Franklin Furnace
County, OH
99 A
#69
Kimbolton
County, OH
99 A
#70
Long Bottom
County, OH
99 A
#71
Millersport
County, OH
99 A
#72
Mount Orab
County, OH
99 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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