City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#8065
Villisca
County, IA
76 B
#8066 Vilonia
County, AR
76 B
#8067 Warrington
County, PA
76 B
#8068 Waterman
County, IL
76 B
#8069 Wauchula
County, FL
76 B
#8070 Wawa
County, PA
76 B
#8071 Weaverville
County, NC
76 B
#8072 Wellsboro
County, PA
76 B
#8073 Wentzville
County, MO
76 B
#8074 West Des Moines
County, IA
76 B
#8075 West Point
County, MS
76 B
#8076 West University Place
County, TX
76 B
#8077 West Yarmouth
County, MA
76 B
#8078 Weston
County, CT
76 B
#8079 Westville
County, NJ
76 B
#8080 White Lake
County, MI
76 B
#8081 Whiteville
County, TN
76 B
#8082 Whitley City
County, KY
76 B
#8083 Willard
County, UT
76 B
#8084 Wilmington
County, DE
76 B
#8085 Windthorst
County, TX
76 B
#8086 Woburn
County, MA
76 B
#8087 Woodbridge
County, NJ
76 B
#8088 Wyalusing
County, PA
76 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.