City Water Quality Rankings in Ohio
417 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#361
Bethel
County, OH
66 C
#362 Celina
County, OH
66 C
#363 Defiance
County, OH
66 C
#364 Logan
County, OH
66 C
#365 Steubenville
County, OH
66 C
#366 Walnut Creek
County, OH
66 C
#367 Montpelier
County, OH
65 C
#368 Forest
County, OH
63 C
#369 Lithopolis
County, OH
63 C
#370 Sabina
County, OH
63 C
#371 Gambier
County, OH
62 C
#372 Urbana
County, OH
62 C
#373 West Jefferson
County, OH
62 C
#374 Atwater
County, OH
61 C
#375 Somerset
County, OH
61 C
#376 Carrollton
County, OH
60 C
#377 Frazeysburg
County, OH
60 C
#378 Glouster
County, OH
60 C
#379 Dennison
County, OH
56 D
#380 Hicksville
County, OH
56 D
#381 Brilliant
County, OH
54 D
#382 Mansfield
County, OH
53 D
#383 Jackson
County, OH
52 D
#384 Rutland
County, OH
52 D
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.