City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#5857
Branchport
County, NY
86 B
#5858 Brick Twp
County, NJ
86 B
#5859 Brillion
County, WI
86 B
#5860 Brownsburg
County, IN
86 B
#5861 Buffalo
County, OK
86 B
#5862 Cabool
County, MO
86 B
#5863 Calera
County, AL
86 B
#5864 Calhoun
County, KY
86 B
#5865 Calisle
County, KY
86 B
#5866 Camanche
County, IA
86 B
#5867 Cambridge
County, MN
86 B
#5868 Camden
County, DE
86 B
#5869 Canandaigua
County, NY
86 B
#5870 Cankton
County, LA
86 B
#5871 Cannelton
County, IN
86 B
#5872 Canon
County, GA
86 B
#5873 Cathlamet
County, WA
86 B
#5874 Central City
County, AR
86 B
#5875 Centralia
County, MO
86 B
#5876 Chagrin Falls
County, OH
86 B
#5877 Chanhassen
County, MN
86 B
#5878 Channahon
County, IL
86 B
#5879 Cherryville
County, NC
86 B
#5880 Chester
County, GA
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.