City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#8545
Seymour
County, IN
72 C
#8546 Shaw
County, MS
72 C
#8547 Sheridan
County, OR
72 C
#8548 Sigourney
County, IA
72 C
#8549 Southampton
County, MA
72 C
#8550 Stanberry
County, MO
72 C
#8551 Star
County, MS
72 C
#8552 Statesville
County, NC
72 C
#8553 Stoneville
County, NC
72 C
#8554 Terre Haute
County, IN
72 C
#8555 Three Rivers
County, MA
72 C
#8556 Trinidad
County, CO
72 C
#8557 Tuscola
County, TX
72 C
#8558 Union
County, MS
72 C
#8559 Vacaville
County, CA
72 C
#8560 Vail
County, AZ
72 C
#8561 Vandergrift
County, PA
72 C
#8562 Vernal
County, UT
72 C
#8563 Villalba
County, PR
72 C
#8564 Warrenton
County, MO
72 C
#8565 Warsaw
County, NY
72 C
#8566 Washington
County, IL
72 C
#8567 West Dundee
County, IL
72 C
#8568 West Jordan
County, UT
72 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.