WaterQ

City Water Quality Rankings

11,696 cities ranked by drinking water quality.

Popular city water quality comparisons

Trending Cities

#5041
Wanamingo
County, MN
90 A
#5042
Warren
County, OH
90 A
#5043
Washington Terrace
County, UT
90 A
#5044
Wayland
County, MI
90 A
#5045
Webster City
County, IA
90 A
#5046
Weed
County, CA
90 A
#5047
Wellington
County, KS
90 A
#5048
Wendell
County, ID
90 A
#5049
West Reading
County, PA
90 A
#5050
Weston
County, MA
90 A
#5051
Wharton
County, NJ
90 A
#5052
Wilkeson
County, WA
90 A
#5053
Williamston
County, NC
90 A
#5054
Windham
County, OH
90 A
#5055
Wintersville
County, OH
90 A
#5056
Woods Cross
County, UT
90 A
#5057
Worthington
County, KY
90 A
#5058
Wrentham
County, MA
90 A
#5059
Young Harris
County, GA
90 A
#5060
Albany
County, IN
89 B
#5061
Alexandria
County, LA
89 B
#5062
Athena
County, OR
89 B
#5063
Athens
County, NY
89 B
#5064
Aurora
County, IN
89 B

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.

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