City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#7681
Nutterfork
County, WV
78 B
#7682 Nyack
County, NY
78 B
#7683 Oglesby
County, IL
78 B
#7684 Okatie
County, SC
78 B
#7685 Only
County, TN
78 B
#7686 Orange City
County, IA
78 B
#7687 Ordway
County, CO
78 B
#7688 Orleans
County, IN
78 B
#7689 Ossining
County, NY
78 B
#7690 Otis Angb
County, MA
78 B
#7691 Owosso
County, MI
78 B
#7692 Oxford
County, MS
78 B
#7693 Palmer
County, TX
78 B
#7694 Paris
County, KY
78 B
#7695 Pinehurst
County, GA
78 B
#7696 Pitman
County, NJ
78 B
#7697 Pittsfield
County, IL
78 B
#7698 Plain City
County, UT
78 B
#7699 Plainview
County, TX
78 B
#7700 Pocahontas
County, IA
78 B
#7701 Prescott
County, WI
78 B
#7702 Preston
County, MN
78 B
#7703 Raymondville
County, TX
78 B
#7704 Rector
County, AR
78 B
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.