City Water Quality Rankings in Arizona
121 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#97
Taylor
County, AZ
24 F
#98 Joseph City
County, AZ
22 F
#99 Somerton
County, AZ
20 F
#100 San Carlos
County, AZ
16 F
#101 Whiteriver
County, AZ
10 F
#102 Winslow
County, AZ
10 F
#103 Grand Canyon
County, AZ
8 F
#104 Apache Junction
County, AZ
0 F
#105 Cameron
County, AZ
0 F
#106 Fort Mohave
County, AZ
0 F
#107 Fountain Hills
County, AZ
0 F
#108 Fredonia
County, AZ
0 F
#109 Gilbert
County, AZ
0 F
#110 Keams Canyon
County, AZ
0 F
#111 Nogales
County, AZ
0 F
#112 Peach Springs
County, AZ
0 F
#113 Polacca
County, AZ
0 F
#114 Pomerene
County, AZ
0 F
#115 Prescott Valley
County, AZ
0 F
#116 Second Mesa
County, AZ
0 F
#117 Sedona
County, AZ
0 F
#118 Show Low
County, AZ
0 F
#119 Springerville
County, AZ
0 F
#120 Tombstone
County, AZ
0 F
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.