City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#10729
Mount Hermon
County, LA
32 F
#10730 Norwood
County, NC
32 F
#10731 O'Fallon
County, IL
32 F
#10732 Parker
County, AZ
32 F
#10733 Rockland
County, MA
32 F
#10734 San Augustine
County, TX
32 F
#10735 Scobey
County, MS
32 F
#10736 Springfield
County, FL
32 F
#10737 Valley Center
County, CA
32 F
#10738 West Frankfort
County, IL
32 F
#10739 Wheeler
County, TX
32 F
#10740 Woodlawn
County, TX
32 F
#10741 Aberdeen
County, MS
31 F
#10742 Anmoore
County, WV
31 F
#10743 Benton
County, KY
31 F
#10744 Bloomfield
County, NJ
31 F
#10745 Chautauqua
County, NY
31 F
#10746 Dallas
County, PA
31 F
#10747 Dolton
County, IL
31 F
#10748 Dunedin
County, FL
31 F
#10749 East Carbon
County, UT
31 F
#10750 Fort Hancock
County, TX
31 F
#10751 Homosassa
County, FL
31 F
#10752 Karnes City
County, TX
31 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.