City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#11689
Wisner
County, NE
0 F
#11690 Wolfforth
County, TX
0 F
#11691 Woodsboro
County, TX
0 F
#11692 Wooster
County, AR
0 F
#11693 Wrangell
County, AK
0 F
#11694 Yanceyville
County, NC
0 F
#11695 Yates Center
County, KS
0 F
#11696 Zwolle
County, LA
0 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.