City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#3865
Windsor
County, CO
93 A
#3866 Winona
County, MO
93 A
#3867 Yucaipa
County, CA
93 A
#3868 Abbeville
County, GA
92 A
#3869 Abingdon
County, MD
92 A
#3870 Acoma
County, NM
92 A
#3871 Ada
County, MN
92 A
#3872 Adamstown
County, PA
92 A
#3873 Adamsville
County, TN
92 A
#3874 Alabaster
County, AL
92 A
#3875 Albert Lea
County, MN
92 A
#3876 Alexandria
County, MN
92 A
#3877 Allen Park
County, MI
92 A
#3878 Allentown
County, PA
92 A
#3879 Alliance
County, NE
92 A
#3880 Alma
County, AR
92 A
#3881 Anahuac
County, TX
92 A
#3882 Andrews
County, NC
92 A
#3883 Anson
County, TX
92 A
#3884 Archdale
County, NC
92 A
#3885 Arkadelphia
County, AR
92 A
#3886 Ashburn
County, GA
92 A
#3887 Atglen
County, PA
92 A
#3888 Aurora
County, CO
92 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.