City Water Quality Rankings in Arizona
121 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#25
Ash Fork
County, AZ
74 C
#26 Litchfield Park
County, AZ
74 C
#27 Page
County, AZ
74 C
#28 Queen Valley
County, AZ
74 C
#29 Cave Creek
County, AZ
73 C
#30 Wickenburg
County, AZ
73 C
#31 San Luis
County, AZ
72 C
#32 Glendale
County, AZ
71 C
#33 Vail
County, AZ
71 C
#34 Kearny
County, AZ
70 C
#35 El Mirage
County, AZ
69 C
#36 Forest Lakes
County, AZ
69 C
#37 Peoria
County, AZ
69 C
#38 Sun Lakes
County, AZ
69 C
#39 Green Valley
County, AZ
68 C
#40 Kykotsmovi
County, AZ
68 C
#41 Chandler Heights
County, AZ
67 C
#42 Humboldt
County, AZ
67 C
#43 Cottonwood
County, AZ
66 C
#44 Phoenix
County, AZ
66 C
#45 Scottsdale
County, AZ
66 C
#46 Ft Defiance
County, AZ
65 C
#47 Carefree
County, AZ
64 C
#48 Luke Afb
County, AZ
64 C
Frequently Asked Questions
How are city water quality rankings calculated in Arizona?
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 Arizona?
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.