City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#3745
Galveston
County, TX
93 A
#3746 Garland
County, TX
93 A
#3747 Gatlinburg
County, TN
93 A
#3748 Gentry
County, AR
93 A
#3749 Glen Carbon
County, IL
93 A
#3750 Goldsboro
County, NC
93 A
#3751 Graham
County, WA
93 A
#3752 Grand Ledge
County, MI
93 A
#3753 Grantsburg
County, WI
93 A
#3754 Great Falls
County, MT
93 A
#3755 Greenfield
County, CA
93 A
#3756 Greenport
County, NY
93 A
#3757 Gretna
County, LA
93 A
#3758 Gridley
County, KS
93 A
#3759 Guayanilla
County, PR
93 A
#3760 Guilderland
County, NY
93 A
#3761 Hillsboro
County, OR
93 A
#3762 Hines
County, OR
93 A
#3763 Homer
County, NY
93 A
#3764 Horn Lake
County, MS
93 A
#3765 Hudson Falls
County, NY
93 A
#3766 Hurlock
County, MD
93 A
#3767 Jackson
County, MI
93 A
#3768 Johnson City
County, TX
93 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.