City Water Quality Rankings in Ohio
431 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#337
South Amherst
County, OH
80 B
#338 West Union
County, OH
80 B
#339 Willard
County, OH
80 B
#340 Hicksville
County, OH
79 B
#341 Ironton
County, OH
79 B
#342 New Concord
County, OH
79 B
#343 West Alexandria
County, OH
79 B
#344 Bellbrook
County, OH
78 B
#345 Cuyahoga Falls
County, OH
78 B
#346 Granville
County, OH
78 B
#347 New Lebanon
County, OH
78 B
#348 Vermilion
County, OH
78 B
#349 Delta
County, OH
77 B
#350 Mount Sterling
County, OH
77 B
#351 Laings
County, OH
76 B
#352 Lucasville
County, OH
76 B
#353 Ottawa
County, OH
76 B
#354 Paulding
County, OH
76 B
#355 Peebles
County, OH
76 B
#356 Sabina
County, OH
76 B
#357 Seville
County, OH
76 B
#358 Sidney
County, OH
76 B
#359 St Marys
County, OH
76 B
#360 Utica
County, OH
76 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.