City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#1969
York
County, NE
98 A
#1970 York
County, NY
98 A
#1971 Yucca Valley
County, CA
98 A
#1972 Adelanto
County, CA
97 A
#1973 Alma
County, GA
97 A
#1974 Angwin
County, CA
97 A
#1975 Apple Valley
County, CA
97 A
#1976 Ashland
County, NE
97 A
#1977 Ashwaubenon
County, WI
97 A
#1978 Athol
County, ID
97 A
#1979 Auburn
County, NY
97 A
#1980 Autaugaville
County, AL
97 A
#1981 Baldwinsville
County, NY
97 A
#1982 Bay City
County, MI
97 A
#1983 Bayville
County, NY
97 A
#1984 Bellaire
County, TX
97 A
#1985 Belle Valley
County, OH
97 A
#1986 Benton
County, AR
97 A
#1987 Berlin
County, MD
97 A
#1988 Bethany
County, IL
97 A
#1989 Big Sky
County, MT
97 A
#1990 Billings
County, MT
97 A
#1991 Binghamton
County, NY
97 A
#1992 Bow
County, WA
97 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.