City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#2041
Galena
County, KS
97 A
#2042 Garden City
County, KS
97 A
#2043 Glacier
County, WA
97 A
#2044 Gleneden Beach
County, OR
97 A
#2045 Glennville
County, GA
97 A
#2046 Gnadenhutten
County, OH
97 A
#2047 Golden
County, CO
97 A
#2048 Gordo
County, AL
97 A
#2049 Greenville
County, MI
97 A
#2050 Guerneville
County, CA
97 A
#2051 Halstead
County, KS
97 A
#2052 Hamburg
County, PA
97 A
#2053 Hanceville
County, AL
97 A
#2054 Hanover Park
County, IL
97 A
#2055 Hardinsburg
County, IN
97 A
#2056 Harrison
County, OH
97 A
#2057 Herndon
County, VA
97 A
#2058 Hickory
County, NC
97 A
#2059 Hinsdale
County, NH
97 A
#2060 Hoosick Falls
County, NY
97 A
#2061 Hopewell Jctn
County, NY
97 A
#2062 Hoquiam
County, WA
97 A
#2063 Hot Springs
County, VA
97 A
#2064 Houma
County, LA
97 A
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.