City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#7897
Cambridge Springs
County, PA
76 B
#7898 Cameron
County, WI
76 B
#7899 Canton
County, MA
76 B
#7900 Carrizo Springs
County, TX
76 B
#7901 Carthage
County, MS
76 B
#7902 Cashton
County, WI
76 B
#7903 Cawood
County, KY
76 B
#7904 Chicago Heights
County, IL
76 B
#7905 Chisago City
County, MN
76 B
#7906 Clayton
County, AL
76 B
#7907 Clever
County, MO
76 B
#7908 Clifton
County, TX
76 B
#7909 Clinton
County, IN
76 B
#7910 Coffeyville
County, KS
76 B
#7911 Collins
County, MS
76 B
#7912 Collinsville
County, OK
76 B
#7913 Columbia Heights
County, MN
76 B
#7914 Commerce
County, TX
76 B
#7915 Conway Springs
County, KS
76 B
#7916 Cottonwood
County, AL
76 B
#7917 Crainville
County, IL
76 B
#7918 Creede
County, CO
76 B
#7919 Cumberland
County, KY
76 B
#7920 Deerfield
County, MA
76 B
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.