City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#8905
Westover
County, WV
65 C
#8906 Windsor
County, MO
65 C
#8907 Wonder Lake
County, IL
65 C
#8908 Woodridge
County, IL
65 C
#8909 Aransas Pass
County, TX
64 C
#8910 Baldwinville
County, MA
64 C
#8911 Baraga
County, MI
64 C
#8912 Beaumont
County, TX
64 C
#8913 Belmont
County, NY
64 C
#8914 Bridgeview
County, IL
64 C
#8915 Brownstown
County, PA
64 C
#8916 Buffalo
County, IA
64 C
#8917 Bullard
County, TX
64 C
#8918 Bunnell
County, FL
64 C
#8919 Camden
County, NJ
64 C
#8920 Cape Girardeau
County, MO
64 C
#8921 Carefree
County, AZ
64 C
#8922 Cascade
County, IA
64 C
#8923 Clarksville
County, TX
64 C
#8924 Clifton
County, IL
64 C
#8925 Colfax
County, IA
64 C
#8926 Corsicana
County, TX
64 C
#8927 Decatur
County, MS
64 C
#8928 Dekalb
County, IL
64 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.