City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#11041
St Joseph
County, LA
10 F
#11042 Stanardsville
County, VA
10 F
#11043 Whiteriver
County, AZ
10 F
#11044 Winslow
County, AZ
10 F
#11045 Bay City
County, TX
9 F
#11046 Concan
County, TX
9 F
#11047 Dos Palos
County, CA
9 F
#11048 Eufaula
County, OK
9 F
#11049 Jeromesville
County, OH
9 F
#11050 Kermit
County, WV
9 F
#11051 Ouray
County, CO
9 F
#11052 Paonia
County, CO
9 F
#11053 Verona
County, NJ
9 F
#11054 Chinook
County, MT
8 F
#11055 Grand Canyon
County, AZ
8 F
#11056 New Haven
County, WV
8 F
#11057 Orange Park
County, FL
8 F
#11058 Westborough
County, MA
8 F
#11059 Bethel
County, CT
7 F
#11060 Budd Lake
County, NJ
7 F
#11061 Denali Park
County, AK
7 F
#11062 El Jebel
County, CO
7 F
#11063 Ringwood
County, NJ
7 F
#11064 Welch
County, WV
7 F
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.