City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#10753
Cobleskill
County, NY
17 F
#10754 Concan
County, TX
17 F
#10755 Deerfield Beach
County, FL
17 F
#10756 Gilbert
County, WV
17 F
#10757 Greentown
County, PA
17 F
#10758 Indiantown
County, FL
17 F
#10759 Jenkins
County, KY
17 F
#10760 Mcalester
County, OK
17 F
#10761 Coquille
County, OR
16 F
#10762 Cotulla
County, TX
16 F
#10763 Dewey
County, OK
16 F
#10764 Fairbanks
County, AK
16 F
#10765 Fairfield
County, IL
16 F
#10766 Kelleys Island
County, OH
16 F
#10767 Lamoni
County, IA
16 F
#10768 Maidesville
County, WV
16 F
#10769 Noble
County, OK
16 F
#10770 North Berwick
County, ME
16 F
#10771 Sylva
County, NC
16 F
#10772 Auburn
County, KS
15 F
#10773 Bloomington
County, TX
15 F
#10774 Cullen
County, LA
15 F
#10775 Hastings
County, OK
15 F
#10776 Lake Providence
County, LA
15 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.