City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#4801
Harrodsburg
County, IN
90 A
#4802 Hartford
County, IL
90 A
#4803 Hartland
County, WI
90 A
#4804 Hatfield
County, MA
90 A
#4805 Hawesville
County, KY
90 A
#4806 Hayward
County, WI
90 A
#4807 Heidelberg
County, MS
90 A
#4808 Hialeah Gardens
County, FL
90 A
#4809 Hiawatha
County, KS
90 A
#4810 Hicksville
County, NY
90 A
#4811 Hill City
County, KS
90 A
#4812 Hineston
County, LA
90 A
#4813 Hiram
County, OH
90 A
#4814 Holliday
County, TX
90 A
#4815 Hollidaysburg
County, PA
90 A
#4816 Hopkinton
County, MA
90 A
#4817 Hornbeck
County, LA
90 A
#4818 Houschton
County, GA
90 A
#4819 Howland
County, ME
90 A
#4820 Hudson
County, MI
90 A
#4821 Hutchins
County, TX
90 A
#4822 Indiana
County, PA
90 A
#4823 Indianapolis
County, IN
90 A
#4824 Innis
County, LA
90 A
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.