City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#4009
F.E. Warren Afb
County, WY
92 A
#4010 Fairmount
County, IN
92 A
#4011 Fairport Harbor
County, OH
92 A
#4012 Fairview
County, MT
92 A
#4013 Fayetteville
County, GA
92 A
#4014 Felicity
County, OH
92 A
#4015 Fennimore
County, WI
92 A
#4016 Finley
County, ND
92 A
#4017 Flomaton
County, AL
92 A
#4018 Florence
County, KY
92 A
#4019 Folkston
County, GA
92 A
#4020 Forreston
County, IL
92 A
#4021 Fort Fairfield
County, ME
92 A
#4022 Fort Gaines
County, GA
92 A
#4023 Fort Plain
County, NY
92 A
#4024 Fountain Run
County, KY
92 A
#4025 Fowlerville
County, MI
92 A
#4026 Framingham
County, MA
92 A
#4027 Frederick
County, CO
92 A
#4028 Fruitland
County, UT
92 A
#4029 Ft. Walton Beach
County, FL
92 A
#4030 Galesburg
County, IL
92 A
#4031 Gallaway
County, TN
92 A
#4032 Garretson
County, SD
92 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.