City Water Quality Rankings in Ohio
431 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#313
Montpelier
County, OH
84 B
#314 Tuscarawas
County, OH
84 B
#315 Waverly
County, OH
84 B
#316 Waynesville
County, OH
84 B
#317 West Liberty
County, OH
84 B
#318 Winesburg
County, OH
84 B
#319 Berea
County, OH
83 B
#320 Danville
County, OH
83 B
#321 Dayton
County, OH
83 B
#322 New Paris
County, OH
83 B
#323 Archbold
County, OH
82 B
#324 Bowling Green
County, OH
82 B
#325 Cleveland
County, OH
82 B
#326 Loudonville
County, OH
82 B
#327 Oak Hill
County, OH
82 B
#328 Toledo
County, OH
82 B
#329 Monroe
County, OH
81 B
#330 Westlake
County, OH
81 B
#331 Williamsport
County, OH
81 B
#332 Barnesville
County, OH
80 B
#333 Cambridge
County, OH
80 B
#334 Kent
County, OH
80 B
#335 Kenton
County, OH
80 B
#336 Newcomerstown
County, OH
80 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.