City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#10705
Lecanto
County, FL
33 F
#10706 Lyford
County, TX
33 F
#10707 Mason
County, TX
33 F
#10708 Mason
County, WV
33 F
#10709 Mercedes
County, TX
33 F
#10710 Oakland Park
County, FL
33 F
#10711 Opalocka
County, FL
33 F
#10712 Philmont
County, NY
33 F
#10713 Port Byron
County, IL
33 F
#10714 St. Leo
County, FL
33 F
#10715 Avalon
County, TX
32 F
#10716 Battle Creek
County, MI
32 F
#10717 Comanche
County, TX
32 F
#10718 Comerio
County, PR
32 F
#10719 Cotton Valley
County, LA
32 F
#10720 Ebensburg
County, PA
32 F
#10721 Emporium
County, PA
32 F
#10722 Franklin
County, GA
32 F
#10723 Harpers Ferry
County, WV
32 F
#10724 Kansas
County, OK
32 F
#10725 Kenova
County, WV
32 F
#10726 Keokuk
County, IA
32 F
#10727 Lakeshore
County, FL
32 F
#10728 Logansport
County, LA
32 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.