City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#9865
Gettysburg
County, PA
49 D
#9866 Goldthwaite
County, TX
49 D
#9867 Greers Ferry
County, AR
49 D
#9868 Guthrie
County, OK
49 D
#9869 Huntington
County, NY
49 D
#9870 Manchester
County, OH
49 D
#9871 Marshall
County, WA
49 D
#9872 Mercersburg
County, PA
49 D
#9873 Middleport
County, OH
49 D
#9874 Molalla
County, OR
49 D
#9875 Monmouth
County, IL
49 D
#9876 Mt Sterling
County, KY
49 D
#9877 New Lisbon
County, NJ
49 D
#9878 Niederwald
County, TX
49 D
#9879 Norco
County, CA
49 D
#9880 Pineville
County, LA
49 D
#9881 Rockdale
County, IL
49 D
#9882 Ruidoso Downs
County, NM
49 D
#9883 Strasburg
County, CO
49 D
#9884 Twin Rocks
County, PA
49 D
#9885 Washburn
County, IL
49 D
#9886 Winnsboro
County, LA
49 D
#9887 Winter Park
County, CO
49 D
#9888 Ashland
County, KY
48 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.