City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#10609
Laneville
County, TX
26 F
#10610 Mccarran
County, NV
26 F
#10611 Miami
County, OK
26 F
#10612 Mingoville
County, PA
26 F
#10613 Monroe Township
County, NJ
26 F
#10614 Mount Hermon
County, LA
26 F
#10615 O'Fallon
County, IL
26 F
#10616 Shelby
County, MS
26 F
#10617 St. Martinville
County, LA
26 F
#10618 Timpson
County, TX
26 F
#10619 Tridell
County, UT
26 F
#10620 Vero Beach
County, FL
26 F
#10621 Warren
County, VT
26 F
#10622 Wilton Manors
County, FL
26 F
#10623 Blairsville
County, PA
25 F
#10624 Braddock
County, PA
25 F
#10625 Clifton Park
County, NY
25 F
#10626 Conifer
County, CO
25 F
#10627 Eldon
County, MO
25 F
#10628 Homosassa
County, FL
25 F
#10629 Joaquin
County, TX
25 F
#10630 Lakeview
County, OR
25 F
#10631 Logan
County, UT
25 F
#10632 Matamoras
County, PA
25 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.