City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#9673
Preston
County, ID
59 D
#9674 Rockaway
County, NJ
59 D
#9675 Rocket Center
County, WV
59 D
#9676 Rutland
County, OH
59 D
#9677 Saint Marys
County, PA
59 D
#9678 Talbotton
County, GA
59 D
#9679 Wesley Chapel
County, FL
59 D
#9680 Williamsburg
County, IA
59 D
#9681 Williamstown
County, NJ
59 D
#9682 Aransas Pass
County, TX
58 D
#9683 Bartlesville
County, OK
58 D
#9684 Baxter
County, TN
58 D
#9685 Benld
County, IL
58 D
#9686 Bluffdale
County, UT
58 D
#9687 Buckingham
County, PA
58 D
#9688 Calumet City
County, IL
58 D
#9689 Cape Girardeau
County, MO
58 D
#9690 Catoosa
County, OK
58 D
#9691 Catskill
County, NY
58 D
#9692 Chesterland
County, OH
58 D
#9693 Colton
County, OR
58 D
#9694 Concord
County, VT
58 D
#9695 Dayville
County, CT
58 D
#9696 Dover
County, PA
58 D
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.