City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#25
Aptos
County, CA
100 A
#26 Arab
County, AL
100 A
#27 Arapahoe
County, NE
100 A
#28 Arcade
County, NY
100 A
#29 Arcadia
County, CA
100 A
#30 Arcata
County, CA
100 A
#31 Archibald
County, LA
100 A
#32 Arcola
County, TX
100 A
#33 Armona
County, CA
100 A
#34 Aromas
County, CA
100 A
#35 Arrowbear Lake
County, CA
100 A
#36 Asbury
County, IA
100 A
#37 Ash Flat
County, AR
100 A
#38 Ashland
County, AL
100 A
#39 Ashland
County, MO
100 A
#40 Asotin
County, WA
100 A
#41 Atkinson
County, NH
100 A
#42 Atoka
County, TN
100 A
#43 Atwater
County, MN
100 A
#44 Atwood
County, KS
100 A
#45 Auburn
County, NE
100 A
#46 Augusta
County, AR
100 A
#47 Augusta
County, GA
100 A
#48 Augusta
County, KS
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.