City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#10009
Maxton
County, NC
46 D
#10010 Mcminnville
County, TN
46 D
#10011 Mebane
County, NC
46 D
#10012 Midlothian
County, IL
46 D
#10013 New Burnside
County, IL
46 D
#10014 Newport
County, OH
46 D
#10015 Norridge
County, IL
46 D
#10016 Oologah
County, OK
46 D
#10017 Panora
County, IA
46 D
#10018 Point
County, TX
46 D
#10019 Porterdale
County, GA
46 D
#10020 Prophetstown
County, IL
46 D
#10021 Ruidoso
County, NM
46 D
#10022 Silver Springs
County, NV
46 D
#10023 Terlton
County, OK
46 D
#10024 Versailles
County, KY
46 D
#10025 Wellsburg
County, WV
46 D
#10026 West Jefferson
County, NC
46 D
#10027 Williamstown
County, PA
46 D
#10028 Winter Park
County, FL
46 D
#10029 Apopka
County, FL
45 D
#10030 Brenham
County, TX
45 D
#10031 Clinton
County, IL
45 D
#10032 Downs
County, IL
45 D
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.