City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#11545
Whitehall
County, MT
0 F
#11546 Whitesboro
County, OK
0 F
#11547 Whitingham
County, VT
0 F
#11548 Wilburton
County, OK
0 F
#11549 Wiley
County, CO
0 F
#11550 Willacoochee
County, GA
0 F
#11551 Williamson
County, WV
0 F
#11552 Windber
County, PA
0 F
#11553 Winneconne
County, WI
0 F
#11554 Winnfield
County, LA
0 F
#11555 Wisner
County, NE
0 F
#11556 Wolfforth
County, TX
0 F
#11557 Woodsboro
County, TX
0 F
#11558 Wooster
County, AR
0 F
#11559 Wrangell
County, AK
0 F
#11560 Yates Center
County, KS
0 F
#11561 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.