City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#8857
Prentiss
County, MS
69 C
#8858 Rigby
County, ID
69 C
#8859 River Rouge
County, MI
69 C
#8860 Rock Island
County, IL
69 C
#8861 Rolling Fork
County, MS
69 C
#8862 Runge
County, TX
69 C
#8863 San Lorenzo
County, PR
69 C
#8864 Savannah
County, MO
69 C
#8865 Southington
County, CT
69 C
#8866 Spencer
County, WV
69 C
#8867 Springville
County, UT
69 C
#8868 Stow
County, OH
69 C
#8869 Tallahassee
County, FL
69 C
#8870 Terra Alta
County, WV
69 C
#8871 Tisbury
County, MA
69 C
#8872 Topeka
County, KS
69 C
#8873 Tulsa
County, OK
69 C
#8874 Virgin
County, UT
69 C
#8875 Wadley
County, GA
69 C
#8876 Wauconda
County, IL
69 C
#8877 Weslaco
County, TX
69 C
#8878 West Monroe
County, LA
69 C
#8879 Westernport
County, MD
69 C
#8880 Woodstock
County, CT
69 C
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.