City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#8761
Healdton
County, OK
66 C
#8762 Hickman
County, KY
66 C
#8763 Hidalgo
County, TX
66 C
#8764 Hollidaysburg
County, PA
66 C
#8765 Holt
County, FL
66 C
#8766 Honey Brook
County, PA
66 C
#8767 Jenks
County, OK
66 C
#8768 Kanab
County, UT
66 C
#8769 Knox City
County, MO
66 C
#8770 Knoxville
County, IL
66 C
#8771 Lake Buena Vista
County, FL
66 C
#8772 Lake Zurich
County, IL
66 C
#8773 Leakesville
County, MS
66 C
#8774 Lebec
County, CA
66 C
#8775 Lenox
County, MA
66 C
#8776 Lincoln
County, ND
66 C
#8777 Log Cabin
County, TX
66 C
#8778 Logan
County, OH
66 C
#8779 Lovelock
County, NV
66 C
#8780 Mabank
County, TX
66 C
#8781 Mapleton
County, IA
66 C
#8782 Mattawan
County, MI
66 C
#8783 Mendota
County, IL
66 C
#8784 Minersville
County, PA
66 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.