City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#3913
Bluford
County, IL
92 A
#3914 Blythe
County, CA
92 A
#3915 Blythe
County, GA
92 A
#3916 Bois D Arc
County, MO
92 A
#3917 Bolivar
County, OH
92 A
#3918 Bonduel
County, WI
92 A
#3919 Bourbon
County, MO
92 A
#3920 Brackenridge
County, PA
92 A
#3921 Brentwood
County, NH
92 A
#3922 Broadway
County, NC
92 A
#3923 Brookfield
County, MA
92 A
#3924 Brookings
County, SD
92 A
#3925 Broussard
County, LA
92 A
#3926 Brown Deer
County, WI
92 A
#3927 Browning
County, MT
92 A
#3928 Brownstown
County, IL
92 A
#3929 Brownstown
County, IN
92 A
#3930 Burlington
County, IA
92 A
#3931 Burnt Hills
County, NY
92 A
#3932 Butler
County, WI
92 A
#3933 Byfield
County, MA
92 A
#3934 Byron
County, MN
92 A
#3935 Calabasas
County, CA
92 A
#3936 Camilla
County, GA
92 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.