City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#5833
Baldwin
County, FL
86 B
#5834 Baldwin City
County, KS
86 B
#5835 Bangor
County, MI
86 B
#5836 Barnesville
County, MN
86 B
#5837 Bassfield
County, MS
86 B
#5838 Battlefield
County, MO
86 B
#5839 Beacon
County, NY
86 B
#5840 Beatrice
County, AL
86 B
#5841 Beaufort
County, NC
86 B
#5842 Belchertown
County, MA
86 B
#5843 Belle Plaine
County, IA
86 B
#5844 Belle Plaine
County, MN
86 B
#5845 Belleville
County, WI
86 B
#5846 Berlin
County, PA
86 B
#5847 Biglerville
County, PA
86 B
#5848 Bison
County, OK
86 B
#5849 Black Hawk
County, SD
86 B
#5850 Blue Springs
County, MO
86 B
#5851 Bogata
County, TX
86 B
#5852 Bolton Landing
County, NY
86 B
#5853 Bordelonville
County, LA
86 B
#5854 Borger
County, TX
86 B
#5855 Boulder
County, MT
86 B
#5856 Bouton
County, IA
86 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.