City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#1873
Struthers
County, OH
98 A
#1874 Suffolk
County, VA
98 A
#1875 Sugar City
County, ID
98 A
#1876 Summerville
County, GA
98 A
#1877 Summerville
County, SC
98 A
#1878 Sumner
County, WA
98 A
#1879 Sundance
County, WY
98 A
#1880 Sunnyside
County, WA
98 A
#1881 Susanville
County, CA
98 A
#1882 Sutter
County, CA
98 A
#1883 Sylvester
County, GA
98 A
#1884 Tahoe Vista
County, CA
98 A
#1885 Talbott
County, TN
98 A
#1886 Taylor
County, AL
98 A
#1887 Tega Cay
County, SC
98 A
#1888 Tekoa
County, WA
98 A
#1889 Temescal Valley
County, CA
98 A
#1890 Temperanceville
County, VA
98 A
#1891 Theodore
County, AL
98 A
#1892 Ticonderoga
County, NY
98 A
#1893 Tonasket
County, WA
98 A
#1894 Townley
County, AL
98 A
#1895 Townsend
County, MT
98 A
#1896 Tracy
County, MN
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.