City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#2353
Ellicott City
County, MD
96 A
#2354 Ellsworth Afb
County, SD
96 A
#2355 Emerson
County, AR
96 A
#2356 Enfield
County, NC
96 A
#2357 Enumclaw
County, WA
96 A
#2358 Erath
County, LA
96 A
#2359 Erwin
County, TN
96 A
#2360 Etowah
County, TN
96 A
#2361 Eugene
County, OR
96 A
#2362 Excelsior Springs
County, MO
96 A
#2363 Fairchild Afb
County, WA
96 A
#2364 Fairmont
County, MN
96 A
#2365 Falcon
County, CO
96 A
#2366 Fall City
County, WA
96 A
#2367 Fayetteville
County, AR
96 A
#2368 Fenton
County, MI
96 A
#2369 Festus
County, MO
96 A
#2370 Florence
County, MT
96 A
#2371 Flovilla
County, GA
96 A
#2372 Folly Beach
County, SC
96 A
#2373 Forest
County, LA
96 A
#2374 Foresthill
County, CA
96 A
#2375 Forsyth
County, IL
96 A
#2376 Fort Atkinson
County, WI
96 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.