City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#10633
Mount Nebo
County, WV
25 F
#10634 Piedmont
County, MO
25 F
#10635 Ridgway
County, CO
25 F
#10636 Russellville
County, KY
25 F
#10637 Tishomingo
County, OK
25 F
#10638 Wetumka
County, OK
25 F
#10639 Wilmington
County, IL
25 F
#10640 Carbon Cliff
County, IL
24 F
#10641 Corbin
County, KY
24 F
#10642 Elgin
County, IL
24 F
#10643 Fair Lawn Boro
County, NJ
24 F
#10644 Galeton
County, PA
24 F
#10645 Glen Rock
County, NJ
24 F
#10646 Granville
County, IL
24 F
#10647 Grover
County, WY
24 F
#10648 Halifax
County, MA
24 F
#10649 Hooker
County, OK
24 F
#10650 Jamul
County, CA
24 F
#10651 Kamiah
County, ID
24 F
#10652 Kaumakani
County, HI
24 F
#10653 Keansburg
County, NJ
24 F
#10654 Kingston
County, OH
24 F
#10655 Lords Valley
County, PA
24 F
#10656 Moriarty
County, NM
24 F
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.