City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#7705
Redkey
County, IN
78 B
#7706 Reidsville
County, GA
78 B
#7707 Reidsville
County, NC
78 B
#7708 Ripley
County, NY
78 B
#7709 Ripley
County, WV
78 B
#7710 Riverton
County, UT
78 B
#7711 Round Lake Beach
County, IL
78 B
#7712 Rushville
County, IL
78 B
#7713 Russell
County, KY
78 B
#7714 Saegertown
County, PA
78 B
#7715 Salt Lake City
County, UT
78 B
#7716 Salt Springs
County, FL
78 B
#7717 San Benito
County, TX
78 B
#7718 Santurce
County, PR
78 B
#7719 Saratoga
County, TX
78 B
#7720 Seymour
County, MO
78 B
#7721 Shorewood
County, IL
78 B
#7722 Sioux Center
County, IA
78 B
#7723 Somerset
County, WI
78 B
#7724 Sparkman
County, AR
78 B
#7725 Steele
County, AL
78 B
#7726 Stockdale
County, TX
78 B
#7727 Stover
County, MO
78 B
#7728 Sun Prairie
County, WI
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.