City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#8329
Walworth
County, WI
74 C
#8330 Wamego
County, KS
74 C
#8331 Warrenton
County, NC
74 C
#8332 Wartrace
County, TN
74 C
#8333 Waukomis
County, OK
74 C
#8334 Waverly
County, TN
74 C
#8335 Williamson
County, NC
74 C
#8336 Willis
County, TX
74 C
#8337 Wilmore
County, KY
74 C
#8338 Woodstown
County, NJ
74 C
#8339 Wrightstown
County, NJ
74 C
#8340 York
County, SC
74 C
#8341 Youngsville
County, LA
74 C
#8342 Zelienople
County, PA
74 C
#8343 Zephyr
County, TX
74 C
#8344 Aiken
County, SC
73 C
#8345 Akron
County, CO
73 C
#8346 Alpha
County, NJ
73 C
#8347 Alpine
County, WY
73 C
#8348 Ashburnham
County, MA
73 C
#8349 Attica
County, NY
73 C
#8350 Bangs
County, TX
73 C
#8351 Banks
County, OR
73 C
#8352 Belle
County, MO
73 C
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.