City Water Quality Rankings in Ohio
417 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#385
Wauseon,
County, OH
51 D
#386 Manchester
County, OH
49 D
#387 Middleport
County, OH
49 D
#388 Napoleon
County, OH
47 D
#389 Newport
County, OH
46 D
#390 Pomeroy
County, OH
44 F
#391 East Liverpool
County, OH
42 F
#392 Malvern
County, OH
37 F
#393 Belpre
County, OH
36 F
#394 New Lexington
County, OH
34 F
#395 South Bloomfield
County, OH
34 F
#396 Bethesda
County, OH
31 F
#397 Woodsfield
County, OH
31 F
#398 Fredricktown
County, OH
29 F
#399 Put-In-Bay
County, OH
29 F
#400 Yorkville
County, OH
27 F
#401 Byesville
County, OH
26 F
#402 Kingston
County, OH
24 F
#403 Paulding
County, OH
22 F
#404 Wellsville
County, OH
22 F
#405 Kelleys Island
County, OH
16 F
#406 Alliance
County, OH
10 F
#407 Holgate
County, OH
6 F
#408 Ottawa
County, OH
5 F
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.