City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#73
Big Bear City
County, CA
100 A
#74 Big Flats
County, NY
100 A
#75 Bigfork
County, MT
100 A
#76 Biola
County, CA
100 A
#77 Birch Run
County, MI
100 A
#78 Bismarck
County, ND
100 A
#79 Black Eagle
County, MT
100 A
#80 Blacklick
County, OH
100 A
#81 Blackshear
County, GA
100 A
#82 Blaine
County, WA
100 A
#83 Blakely
County, GA
100 A
#84 Bloomfield Township
County, MI
100 A
#85 Bloomingdale
County, GA
100 A
#86 Blountville
County, TN
100 A
#87 Blue Earth
County, MN
100 A
#88 Bluffton
County, IN
100 A
#89 Bono
County, AR
100 A
#90 Booneville
County, AR
100 A
#91 Boonsboro
County, MD
100 A
#92 Bracey
County, VA
100 A
#93 Branchville
County, SC
100 A
#94 Brandon
County, VT
100 A
#95 Brea
County, CA
100 A
#96 Bremen
County, GA
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.