City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#7009
Thomas
County, OK
82 B
#7010 Thomasville
County, AL
82 B
#7011 Toledo
County, OH
82 B
#7012 Torrey
County, UT
82 B
#7013 Trabuco Canyon
County, CA
82 B
#7014 Traer
County, IA
82 B
#7015 Triadelphia
County, WV
82 B
#7016 Tuckerman
County, AR
82 B
#7017 Tunnelton
County, WV
82 B
#7018 Union Springs
County, AL
82 B
#7019 Vansant
County, VA
82 B
#7020 Vestal
County, NY
82 B
#7021 Virgina City
County, NV
82 B
#7022 Volo
County, IL
82 B
#7023 Wall Twp
County, NJ
82 B
#7024 Warsaw
County, VA
82 B
#7025 Washington
County, IN
82 B
#7026 Washington
County, LA
82 B
#7027 Washington
County, NJ
82 B
#7028 Waterford
County, CT
82 B
#7029 Websterville
County, VT
82 B
#7030 Weeping Water
County, NE
82 B
#7031 Weimar
County, TX
82 B
#7032 Wheat Ridge
County, CO
82 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.