City Water Quality Rankings in Ohio
417 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#25
Malta
County, OH
100 A
#26 Mcdermott
County, OH
100 A
#27 Millersburg
County, OH
100 A
#28 Millersport
County, OH
100 A
#29 Monroeville
County, OH
100 A
#30 Mount Blanchard
County, OH
100 A
#31 Mount Gillead
County, OH
100 A
#32 North Lewisburg
County, OH
100 A
#33 Orwell
County, OH
100 A
#34 Pickerington
County, OH
100 A
#35 Sheffield Village
County, OH
100 A
#36 Spencerville
County, OH
100 A
#37 Streetsboro
County, OH
100 A
#38 Sycamore
County, OH
100 A
#39 Tipp City
County, OH
100 A
#40 Union
County, OH
100 A
#41 Upper Sandusky
County, OH
100 A
#42 Vienna
County, OH
100 A
#43 W. Alexandria
County, OH
100 A
#44 Wapakoneta
County, OH
100 A
#45 West Salem
County, OH
100 A
#46 Wooster
County, OH
100 A
#47 Wpafb
County, OH
100 A
#48 Ashtabula
County, OH
99 A
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.