City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#409
Gassville
County, AR
100 A
#410 Gateway
County, AR
100 A
#411 Gaylord
County, MI
100 A
#412 Gearhart
County, OR
100 A
#413 Genesee
County, ID
100 A
#414 Geneseo
County, NY
100 A
#415 Geneva
County, NE
100 A
#416 Georgetown
County, OH
100 A
#417 Gerber
County, CA
100 A
#418 Germantown
County, OH
100 A
#419 Gibsonburg
County, OH
100 A
#420 Gilby
County, ND
100 A
#421 Gilcrest
County, CO
100 A
#422 Girard
County, OH
100 A
#423 Gladstone
County, MI
100 A
#424 Gladstone
County, MO
100 A
#425 Glasgow
County, MT
100 A
#426 Glencoe
County, MN
100 A
#427 Glendale
County, CA
100 A
#428 Glenwood Landing
County, NY
100 A
#429 Glyndon
County, MN
100 A
#430 Golden
County, TX
100 A
#431 Goodhue
County, MN
100 A
#432 Gordonsville
County, TN
100 A
Frequently Asked Questions
How are city water quality rankings calculated?
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 US cities directly?
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.