City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#8833
Greenville
County, MS
69 C
#8834 Groveland
County, CA
69 C
#8835 Hanover
County, PA
69 C
#8836 Henderson
County, TX
69 C
#8837 Knox City
County, MO
69 C
#8838 La Feria
County, TX
69 C
#8839 Levelland
County, TX
69 C
#8840 Livingston
County, NJ
69 C
#8841 Lumberton
County, MS
69 C
#8842 Mahopac
County, NY
69 C
#8843 Medford
County, OK
69 C
#8844 Mill Hall
County, PA
69 C
#8845 Moline
County, IL
69 C
#8846 Moscow Mills
County, MO
69 C
#8847 Mt. Vernon
County, AL
69 C
#8848 New Lisbon
County, WI
69 C
#8849 New London
County, TX
69 C
#8850 North Wales
County, PA
69 C
#8851 Oak Lawn
County, IL
69 C
#8852 Ochelata
County, OK
69 C
#8853 Palm Harbor
County, FL
69 C
#8854 Phoenix
County, MD
69 C
#8855 Ponca City
County, OK
69 C
#8856 Powhatan Point
County, OH
69 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.