City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#2857
Yellow Springs
County, OH
96 A
#2858 Youngstown
County, OH
96 A
#2859 Adams
County, TN
95 A
#2860 Albany
County, OR
95 A
#2861 Angola
County, IN
95 A
#2862 Apex
County, NC
95 A
#2863 Appleton
County, WI
95 A
#2864 Arnold
County, MO
95 A
#2865 Aumsville
County, OR
95 A
#2866 Averill Park
County, NY
95 A
#2867 Avoca
County, IA
95 A
#2868 Bagdad
County, KY
95 A
#2869 Baton Rouge
County, LA
95 A
#2870 Baytown
County, TX
95 A
#2871 Berwick
County, LA
95 A
#2872 Black Creek
County, NC
95 A
#2873 Bokeelia
County, FL
95 A
#2874 Bowie
County, MD
95 A
#2875 Boyers
County, PA
95 A
#2876 Brazil
County, IN
95 A
#2877 Brookville
County, PA
95 A
#2878 Buena Park
County, CA
95 A
#2879 Byers
County, CO
95 A
#2880 Cactus
County, TX
95 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.