City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#5641
Westville
County, IN
88 B
#5642 Wheaton
County, IL
88 B
#5643 White Cloud
County, MI
88 B
#5644 White Plains
County, KY
88 B
#5645 White Salmon
County, WA
88 B
#5646 Whitefield
County, NH
88 B
#5647 Whitewater
County, WI
88 B
#5648 Williamstown
County, WV
88 B
#5649 Willingbor0
County, NJ
88 B
#5650 Wilmington
County, OH
88 B
#5651 Winchester
County, KY
88 B
#5652 Winsted
County, CT
88 B
#5653 Winsted
County, MN
88 B
#5654 Winton
County, CA
88 B
#5655 Woodbine
County, IA
88 B
#5656 Woodhaven
County, MI
88 B
#5657 Yarmouth
County, ME
88 B
#5658 Yonkers
County, NY
88 B
#5659 Yreka
County, CA
88 B
#5660 Ada
County, OK
87 B
#5661 Alamosa
County, CO
87 B
#5662 Alba
County, TX
87 B
#5663 Albertville
County, AL
87 B
#5664 Ames
County, IA
87 B
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.