City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#11665
Warrenton
County, GA
0 F
#11666 Waterloo
County, IL
0 F
#11667 Watonga
County, OK
0 F
#11668 Waurika
County, OK
0 F
#11669 Wayne
County, WV
0 F
#11670 Weedville
County, PA
0 F
#11671 Wellton
County, AZ
0 F
#11672 West Kingston
County, RI
0 F
#11673 West Tawakoni
County, TX
0 F
#11674 Westerly
County, RI
0 F
#11675 Westport
County, IN
0 F
#11676 Wewoka
County, OK
0 F
#11677 Wharton
County, TX
0 F
#11678 White Cottage
County, OH
0 F
#11679 Whitehall
County, MT
0 F
#11680 Whitesboro
County, OK
0 F
#11681 Whitingham
County, VT
0 F
#11682 Wilburton
County, OK
0 F
#11683 Wiley
County, CO
0 F
#11684 Willacoochee
County, GA
0 F
#11685 Williamson
County, WV
0 F
#11686 Windber
County, PA
0 F
#11687 Winneconne
County, WI
0 F
#11688 Winnfield
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.