City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#5065
Auxvasse
County, MO
89 B
#5066 Baldwin
County, MI
89 B
#5067 Baltimore
County, MD
89 B
#5068 Bedford
County, IN
89 B
#5069 Bedford
County, MA
89 B
#5070 Belcourt
County, ND
89 B
#5071 Belding
County, MI
89 B
#5072 Belgium
County, WI
89 B
#5073 Belton
County, TX
89 B
#5074 Black River Falls
County, WI
89 B
#5075 Boiceville
County, NY
89 B
#5076 Brooks
County, CA
89 B
#5077 Buffalo Grove
County, IL
89 B
#5078 Cantonment
County, FL
89 B
#5079 Cardington
County, OH
89 B
#5080 Carencro
County, LA
89 B
#5081 Carey
County, OH
89 B
#5082 Carnelian Bay
County, CA
89 B
#5083 Charlotte
County, TX
89 B
#5084 Chelmsford
County, MA
89 B
#5085 Chilton
County, WI
89 B
#5086 Clay City
County, KY
89 B
#5087 Cleveland
County, WI
89 B
#5088 Clinton
County, AR
89 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.