City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#1921
Visalia
County, CA
98 A
#1922 Wagener
County, SC
98 A
#1923 Wakonda
County, SD
98 A
#1924 Walhalla
County, SC
98 A
#1925 Walton
County, KY
98 A
#1926 Warden
County, WA
98 A
#1927 Ware Shoals
County, SC
98 A
#1928 Wasco
County, CA
98 A
#1929 Washburn
County, ND
98 A
#1930 Waterford
County, NY
98 A
#1931 Waterville Valley
County, NH
98 A
#1932 Wattsville
County, AL
98 A
#1933 Wausau
County, WI
98 A
#1934 Wayne
County, NE
98 A
#1935 Waynesboro
County, GA
98 A
#1936 Wayzata
County, MN
98 A
#1937 Weaver
County, AL
98 A
#1938 Weedsport
County, NY
98 A
#1939 Wellington
County, OH
98 A
#1940 Welsh
County, LA
98 A
#1941 Wernersville
County, PA
98 A
#1942 West Allis
County, WI
98 A
#1943 West Greenwich
County, RI
98 A
#1944 West Richland
County, WA
98 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.