City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#10777
Mount Dora
County, FL
30 F
#10778 Osterville
County, MA
30 F
#10779 Piedmont
County, MO
30 F
#10780 Prineville
County, OR
30 F
#10781 Renova
County, MS
30 F
#10782 Richgrove
County, CA
30 F
#10783 Spring City
County, UT
30 F
#10784 Starke
County, FL
30 F
#10785 Trinity
County, TX
30 F
#10786 Voorheesville
County, NY
30 F
#10787 Welch
County, OK
30 F
#10788 Antigo
County, WI
29 F
#10789 Biscoe
County, NC
29 F
#10790 Colver
County, PA
29 F
#10791 Corbin
County, KY
29 F
#10792 Ford Heights
County, IL
29 F
#10793 Highland
County, IL
29 F
#10794 Iowa City
County, IA
29 F
#10795 La Salle
County, IL
29 F
#10796 Locust Grove
County, OK
29 F
#10797 Newtown
County, PA
29 F
#10798 Pima
County, AZ
29 F
#10799 Pueblo West
County, CO
29 F
#10800 Terlton
County, OK
29 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.