City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#8737
Cherryvale
County, KS
66 C
#8738 Chester
County, IL
66 C
#8739 Cicero
County, IL
66 C
#8740 Collinsville
County, TX
66 C
#8741 Coral Springs
County, FL
66 C
#8742 Cottonport
County, LA
66 C
#8743 Cottonwood
County, AZ
66 C
#8744 Crosbyton
County, TX
66 C
#8745 Cushing
County, TX
66 C
#8746 Danbury
County, TX
66 C
#8747 Defiance
County, OH
66 C
#8748 Deptford
County, NJ
66 C
#8749 Des Plaines
County, IL
66 C
#8750 Dumas
County, TX
66 C
#8751 East Dundee
County, IL
66 C
#8752 Eureka
County, IL
66 C
#8753 Falls Creek
County, PA
66 C
#8754 Gas City
County, IN
66 C
#8755 Glenwood
County, IL
66 C
#8756 Glenwood City
County, WI
66 C
#8757 Greensburg
County, IN
66 C
#8758 Hansen
County, ID
66 C
#8759 Harriman
County, TN
66 C
#8760 Havana
County, KS
66 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.