City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#97
Bloomingdale
County, GA
100 A
#98 Bloomington
County, CA
100 A
#99 Blountville
County, TN
100 A
#100 Blue Earth
County, MN
100 A
#101 Blue Lake
County, CA
100 A
#102 Bluefield
County, VA
100 A
#103 Bluffton
County, IN
100 A
#104 Bodega Bay
County, CA
100 A
#105 Bonham
County, TX
100 A
#106 Bono
County, AR
100 A
#107 Booneville
County, AR
100 A
#108 Boonsboro
County, MD
100 A
#109 Bossier City
County, LA
100 A
#110 Bracey
County, VA
100 A
#111 Bradenburg
County, KY
100 A
#112 Braham
County, MN
100 A
#113 Branchville
County, SC
100 A
#114 Brandon
County, VT
100 A
#115 Brea
County, CA
100 A
#116 Bremen
County, GA
100 A
#117 Brent
County, AL
100 A
#118 Brewster
County, OH
100 A
#119 Bridgeport
County, CA
100 A
#120 Bridgeport
County, MI
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.