City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#11065
Coupland
County, TX
0 F
#11066 Craig
County, AK
0 F
#11067 Creech Afb
County, NV
0 F
#11068 Creighton
County, PA
0 F
#11069 Cresco
County, IA
0 F
#11070 Crest Hill
County, IL
0 F
#11071 Crewe
County, VA
0 F
#11072 Crowder
County, OK
0 F
#11073 Cuba
County, NM
0 F
#11074 Danville
County, KY
0 F
#11075 Danville
County, AR
0 F
#11076 Davidsville
County, PA
0 F
#11077 Davis
County, OK
0 F
#11078 Dawson
County, IL
0 F
#11079 De Leon
County, TX
0 F
#11080 Deatsville
County, AL
0 F
#11081 Decatur
County, AR
0 F
#11082 Delight
County, AR
0 F
#11083 Denali Park
County, AK
0 F
#11084 Diboll
County, TX
0 F
#11085 Dickeyville
County, WI
0 F
#11086 Dickinson
County, AL
0 F
#11087 Dilliner
County, PA
0 F
#11088 Dillingham
County, AK
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.