City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#10993
Boone
County, IA
0 F
#10994 Boonville
County, NC
0 F
#10995 Bowling Green
County, VA
0 F
#10996 Braddock
County, NJ
0 F
#10997 Bradford
County, PA
0 F
#10998 Brady
County, TX
0 F
#10999 Breese
County, IL
0 F
#11000 Bridgeton
County, NJ
0 F
#11001 Bristow
County, OK
0 F
#11002 Bronson
County, KS
0 F
#11003 Brownstown
County, IL
0 F
#11004 Brownsville
County, KY
0 F
#11005 Byrdstown
County, TN
0 F
#11006 Caddo
County, OK
0 F
#11007 Cadiz
County, OH
0 F
#11008 Caldwell
County, NJ
0 F
#11009 Calera
County, OK
0 F
#11010 Caliente
County, NV
0 F
#11011 Cameron
County, AZ
0 F
#11012 Cameron
County, WV
0 F
#11013 Cameron
County, LA
0 F
#11014 Camp Wood
County, TX
0 F
#11015 Campbellsburg
County, KY
0 F
#11016 Campo
County, CA
0 F
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.