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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#265
Grafton
County, OH
89 B
#266
Lewisburg
County, OH
89 B
#267
Olmsted Twp
County, OH
89 B
#268
Piketon
County, OH
89 B
#269
Sarahsville
County, OH
89 B
#270
Wellston
County, OH
89 B
#271
Zanesville
County, OH
89 B
#272
Antwerp
County, OH
88 B
#273
Bellaire
County, OH
88 B
#274
Bellevue
County, OH
88 B
#275
Circleville
County, OH
88 B
#276
Cortland
County, OH
88 B
#277
Degraff
County, OH
88 B
#278
Dover
County, OH
88 B
#279
Hamilton
County, OH
88 B
#280
Jackson Center
County, OH
88 B
#281
Mconnelsville
County, OH
88 B
#282
Middletown
County, OH
88 B
#283
Morrow
County, OH
88 B
#284
Seaman
County, OH
88 B
#285
Southpoint
County, OH
88 B
#286
Strasburg
County, OH
88 B
#287
West Unity
County, OH
88 B
#288
Wilmington
County, OH
88 B

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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