City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#1849
Smartt
County, TN
98 A
#1850 Smyrna
County, TN
98 A
#1851 Solvang
County, CA
98 A
#1852 Somerville
County, AL
98 A
#1853 South Bend
County, WA
98 A
#1854 South Fulton
County, TN
98 A
#1855 South Hill
County, VA
98 A
#1856 South San Francisco
County, CA
98 A
#1857 Spanish Fort
County, AL
98 A
#1858 Sparta
County, WI
98 A
#1859 Spokane
County, WA
98 A
#1860 Spokane Valley
County, WA
98 A
#1861 Spring Hill
County, TN
98 A
#1862 Springfield
County, MN
98 A
#1863 Springfield
County, MO
98 A
#1864 St Anthony
County, ID
98 A
#1865 St Maries
County, ID
98 A
#1866 St Marys
County, WV
98 A
#1867 St. Augusta
County, MN
98 A
#1868 Stanford
County, KY
98 A
#1869 Stanley
County, ND
98 A
#1870 Stanley
County, NY
98 A
#1871 Star City
County, AR
98 A
#1872 Stevenson
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.