City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#4753
Elko
County, NV
90 A
#4754 Elmhurst
County, IL
90 A
#4755 Espanolal
County, NM
90 A
#4756 Everett
County, MA
90 A
#4757 Fall River Mills
County, CA
90 A
#4758 Fargo
County, ND
90 A
#4759 Farmersville
County, OH
90 A
#4760 Fayette
County, IA
90 A
#4761 Flint
County, MI
90 A
#4762 Forest Grove
County, OR
90 A
#4763 Forest Lake
County, MN
90 A
#4764 Fowler
County, CA
90 A
#4765 Fox Lake
County, WI
90 A
#4766 Foxborough
County, MA
90 A
#4767 Franklin
County, NH
90 A
#4768 Freeland
County, PA
90 A
#4769 Fresno
County, CA
90 A
#4770 Frewsburg
County, NY
90 A
#4771 Fruitvale
County, TX
90 A
#4772 Fulda
County, MN
90 A
#4773 Gardner
County, KS
90 A
#4774 Georgetown
County, KY
90 A
#4775 Gervais
County, OR
90 A
#4776 Gibson City
County, IL
90 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.