City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#121
Burnside
County, KY
100 A
#122 Burnsville
County, NC
100 A
#123 Burnsville
County, MN
100 A
#124 Burton
County, MI
100 A
#125 Burwell
County, NE
100 A
#126 Butler
County, IN
100 A
#127 Buttonwillow
County, CA
100 A
#128 Byron
County, GA
100 A
#129 Cabot
County, AR
100 A
#130 Cahokia Heights
County, IL
100 A
#131 Caldwell
County, AR
100 A
#132 Caledonia
County, NY
100 A
#133 Calimesa
County, CA
100 A
#134 Calumet
County, MI
100 A
#135 Camp Meeker
County, CA
100 A
#136 Canal Fulton
County, OH
100 A
#137 Canton
County, GA
100 A
#138 Canton
County, MI
100 A
#139 Cape Vincent
County, NY
100 A
#140 Carbon Hill
County, AL
100 A
#141 Carle Place
County, NY
100 A
#142 Carleton
County, MI
100 A
#143 Carlisle
County, AR
100 A
#144 Carlsbad
County, CA
100 A
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.