City Water Quality Rankings in Ohio
431 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#25
Kettering
County, OH
100 A
#26 Lakeview
County, OH
100 A
#27 Lodi
County, OH
100 A
#28 Malta
County, OH
100 A
#29 Mcdermott
County, OH
100 A
#30 Minerva
County, OH
100 A
#31 Monroeville
County, OH
100 A
#32 Mount Blanchard
County, OH
100 A
#33 Mount Gillead
County, OH
100 A
#34 New Philadelphia
County, OH
100 A
#35 New Waterford
County, OH
100 A
#36 North Lewisburg
County, OH
100 A
#37 North Ridgeville
County, OH
100 A
#38 Ontario
County, OH
100 A
#39 Orwell
County, OH
100 A
#40 Pandora
County, OH
100 A
#41 Pickerington
County, OH
100 A
#42 Sandusky
County, OH
100 A
#43 Sheffield Lake
County, OH
100 A
#44 Sheffield Village
County, OH
100 A
#45 Spencerville
County, OH
100 A
#46 Springboro
County, OH
100 A
#47 St Henry
County, OH
100 A
#48 Streetsboro
County, OH
100 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.