City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#3673
Xenia
County, OH
94 A
#3674 York
County, AL
94 A
#3675 Yorktown
County, TX
94 A
#3676 Yountville
County, CA
94 A
#3677 Ypsilanti
County, MI
94 A
#3678 Aberdeen
County, MD
93 A
#3679 Adams
County, WI
93 A
#3680 Agawam
County, MA
93 A
#3681 Alexandria
County, IN
93 A
#3682 Allegany
County, NY
93 A
#3683 Allendale
County, SC
93 A
#3684 Alvarado
County, TX
93 A
#3685 Amherst
County, VA
93 A
#3686 Anderson
County, SC
93 A
#3687 Argyle
County, TX
93 A
#3688 Arvada
County, CO
93 A
#3689 Banner Elk
County, NC
93 A
#3690 Basin
County, WY
93 A
#3691 Bellingham
County, WA
93 A
#3692 Bennettsville
County, SC
93 A
#3693 Bennington
County, VT
93 A
#3694 Bonita Springs
County, FL
93 A
#3695 Bonner Springs
County, KS
93 A
#3696 Boston
County, MA
93 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.