City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#10441
Anmoore
County, WV
33 F
#10442 Belleair
County, FL
33 F
#10443 Black Canyon City
County, AZ
33 F
#10444 Brighton
County, IL
33 F
#10445 Collinsville
County, OK
33 F
#10446 Denmark
County, SC
33 F
#10447 Elkins
County, WV
33 F
#10448 Forked River
County, NJ
33 F
#10449 Fort Lauderdale
County, FL
33 F
#10450 Gurabo
County, PR
33 F
#10451 Jonesboro
County, LA
33 F
#10452 Jourdanton
County, TX
33 F
#10453 North Edwards
County, CA
33 F
#10454 Parker
County, AZ
33 F
#10455 Parkland
County, FL
33 F
#10456 Pemberton
County, NJ
33 F
#10457 Philmont
County, NY
33 F
#10458 Pompano Beach
County, FL
33 F
#10459 Rio Vista
County, TX
33 F
#10460 Saint Johns
County, AZ
33 F
#10461 Thunderbolt
County, GA
33 F
#10462 Tuba City
County, AZ
33 F
#10463 Wolfe City
County, TX
33 F
#10464 Woodbury
County, NY
33 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.