City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#9001
Villisca
County, IA
64 C
#9002 Washingtonville
County, NY
64 C
#9003 Waverly
County, IA
64 C
#9004 Weimar
County, TX
64 C
#9005 White Oak
County, TX
64 C
#9006 Whitewright
County, TX
64 C
#9007 Whitmire
County, SC
64 C
#9008 Woodstock
County, VA
64 C
#9009 Worcester
County, MA
64 C
#9010 Asheville
County, NC
63 C
#9011 Ava
County, MO
63 C
#9012 Beaver
County, PA
63 C
#9013 Buffalo
County, TX
63 C
#9014 Cape Coral
County, FL
63 C
#9015 Cayey
County, PR
63 C
#9016 Clio
County, AL
63 C
#9017 Cranberry Twp
County, PA
63 C
#9018 Crane
County, TX
63 C
#9019 Crestwood
County, IL
63 C
#9020 Dalzell
County, SC
63 C
#9021 Excel
County, AL
63 C
#9022 Fairfield
County, IA
63 C
#9023 Forest
County, OH
63 C
#9024 Globe
County, AZ
63 C
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.