City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#8809
Savannah
County, MO
66 C
#8810 Sayre
County, PA
66 C
#8811 Scottsdale
County, AZ
66 C
#8812 Seagoville
County, TX
66 C
#8813 Sheffield
County, PA
66 C
#8814 Shelburne Falls
County, MA
66 C
#8815 Shepherd
County, MI
66 C
#8816 Signal Hill
County, CA
66 C
#8817 Spencer
County, MA
66 C
#8818 St George City
County, UT
66 C
#8819 Stamford
County, NY
66 C
#8820 Steubenville
County, OH
66 C
#8821 Sunflower
County, MS
66 C
#8822 Sunray
County, TX
66 C
#8823 Terra Alta
County, WV
66 C
#8824 Thibodaux
County, LA
66 C
#8825 Topeka
County, KS
66 C
#8826 Walnut Creek
County, OH
66 C
#8827 Warrenville
County, IL
66 C
#8828 West Peabody
County, MA
66 C
#8829 Woodridge
County, NY
66 C
#8830 Yorkville
County, IL
66 C
#8831 Alamance
County, NC
65 C
#8832 Albers
County, IL
65 C
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.