City Water Quality Rankings in Ohio
431 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#241
New Vienna
County, OH
91 A
#242 Roseville
County, OH
91 A
#243 Sardis
County, OH
91 A
#244 Ashland
County, OH
90 A
#245 Ashville
County, OH
90 A
#246 Coshocton
County, OH
90 A
#247 Criderville
County, OH
90 A
#248 Farmersville
County, OH
90 A
#249 Hiram
County, OH
90 A
#250 Lakewood
County, OH
90 A
#251 Little Hocking
County, OH
90 A
#252 Lordstown
County, OH
90 A
#253 Massillon
County, OH
90 A
#254 Norton
County, OH
90 A
#255 Pemberville
County, OH
90 A
#256 Wakeman
County, OH
90 A
#257 Warren
County, OH
90 A
#258 Windham
County, OH
90 A
#259 Wintersville
County, OH
90 A
#260 Cardington
County, OH
89 B
#261 Carey
County, OH
89 B
#262 Columbus Grove
County, OH
89 B
#263 Commercial Point
County, OH
89 B
#264 Dresden
County, OH
89 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.