City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#10825
Magdalena
County, NM
11 F
#10826 Naranjito
County, PR
11 F
#10827 Alliance
County, OH
10 F
#10828 Arnold Afb
County, TN
10 F
#10829 Calumet Park
County, IL
10 F
#10830 Durham
County, CT
10 F
#10831 Ely
County, NV
10 F
#10832 Hookstown
County, PA
10 F
#10833 Kenova
County, WV
10 F
#10834 Luquillo
County, PR
10 F
#10835 New Berlin
County, IL
10 F
#10836 North Adams
County, MA
10 F
#10837 Renovo
County, PA
10 F
#10838 Seelyville
County, IN
10 F
#10839 Winslow
County, AZ
10 F
#10840 Yabucoa
County, PR
10 F
#10841 Antigo
County, WI
9 F
#10842 Belleville
County, KS
9 F
#10843 Carbondale
County, IL
9 F
#10844 Cutler
County, CA
9 F
#10845 Dade City
County, FL
9 F
#10846 East Orange
County, NJ
9 F
#10847 Hancock
County, NY
9 F
#10848 Moorestown
County, NJ
9 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.