City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#9841
Rochelle
County, IL
50 D
#9842 Safford
County, AZ
50 D
#9843 Salem
County, KY
50 D
#9844 Sanford
County, FL
50 D
#9845 Savanna
County, IL
50 D
#9846 Three Rivers
County, TX
50 D
#9847 Totowa Borough
County, NJ
50 D
#9848 Valdese
County, NC
50 D
#9849 Waldo
County, AR
50 D
#9850 Williams Bay
County, WI
50 D
#9851 Wilson
County, AR
50 D
#9852 Winfield
County, AL
50 D
#9853 Beaver Dam
County, KY
49 D
#9854 Bell City
County, LA
49 D
#9855 Big Sandy
County, TX
49 D
#9856 Broken Arrow
County, OK
49 D
#9857 Camp Verde
County, AZ
49 D
#9858 Central City
County, CO
49 D
#9859 Chandler
County, AZ
49 D
#9860 Corning
County, CA
49 D
#9861 Delcambre
County, LA
49 D
#9862 Electra
County, TX
49 D
#9863 Flanders
County, NJ
49 D
#9864 Gatesville
County, TX
49 D
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.