City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#10057
Taholah
County, WA
45 D
#10058 Uriah
County, AL
45 D
#10059 Weston
County, TX
45 D
#10060 Yerington
County, NV
45 D
#10061 Aberdeen
County, MS
44 F
#10062 Alice
County, TX
44 F
#10063 Alton
County, NH
44 F
#10064 Ballston Spa
County, NY
44 F
#10065 Beaver
County, UT
44 F
#10066 Camden
County, AR
44 F
#10067 Collinsville
County, IL
44 F
#10068 Danbury
County, CT
44 F
#10069 Del Valle
County, TX
44 F
#10070 Dixmoor
County, IL
44 F
#10071 Dudley
County, GA
44 F
#10072 Elkhorn
County, WI
44 F
#10073 Enfield
County, IL
44 F
#10074 Florence
County, AZ
44 F
#10075 Florida City
County, FL
44 F
#10076 Fowler
County, CO
44 F
#10077 Franklin
County, KY
44 F
#10078 Hayden
County, CO
44 F
#10079 Huntington
County, TX
44 F
#10080 Jonestown
County, TX
44 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.