City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#3649
Wedowee
County, AL
94 A
#3650 Wenham
County, MA
94 A
#3651 West Point
County, PA
94 A
#3652 Westville
County, OK
94 A
#3653 White Plains
County, NY
94 A
#3654 Whitesville
County, KY
94 A
#3655 Whitney
County, TX
94 A
#3656 Wiggins
County, CO
94 A
#3657 Wilber
County, NE
94 A
#3658 Williamston
County, SC
94 A
#3659 Williston
County, VT
94 A
#3660 Wilmington
County, NC
94 A
#3661 Wilton
County, IA
94 A
#3662 Winchester
County, IL
94 A
#3663 Winchester
County, KS
94 A
#3664 Winfield
County, IL
94 A
#3665 Wingate
County, NC
94 A
#3666 Winlock
County, WA
94 A
#3667 Winona
County, MN
94 A
#3668 Winooski
County, VT
94 A
#3669 Winthrop
County, WA
94 A
#3670 Wisconsin Rapids
County, WI
94 A
#3671 Woodbury
County, TN
94 A
#3672 Woodlake
County, CA
94 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.