City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#1825
Scotts Valley
County, CA
98 A
#1826 Scottville
County, MI
98 A
#1827 Scurry
County, TX
98 A
#1828 Searcy
County, AR
98 A
#1829 Searsport
County, ME
98 A
#1830 Seaview
County, NY
98 A
#1831 Sebewaing
County, MI
98 A
#1832 Seekonk
County, MA
98 A
#1833 Selbyville
County, DE
98 A
#1834 Seven Mile
County, OH
98 A
#1835 Sevierville
County, TN
98 A
#1836 Seymour
County, WI
98 A
#1837 Shamong
County, NJ
98 A
#1838 Shenandoah
County, VA
98 A
#1839 Sherman
County, TX
98 A
#1840 Shiner
County, TX
98 A
#1841 Shoemakersville
County, PA
98 A
#1842 Shoreacres
County, TX
98 A
#1843 Shoreline
County, WA
98 A
#1844 Signal Mountain
County, TN
98 A
#1845 Silver Lake
County, OH
98 A
#1846 Simpson
County, LA
98 A
#1847 Sioux Falls
County, SD
98 A
#1848 Slate Hill
County, NY
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.