WaterQ

City Water Quality Rankings

11,696 cities ranked by drinking water quality.

Popular city water quality comparisons

Trending Cities

#361
Firestone
County, CO
100 A
#362
Fitzgerald
County, GA
100 A
#363
Flora
County, IN
100 A
#364
Florala
County, AL
100 A
#365
Florence
County, WI
100 A
#366
Flowery Branch
County, GA
100 A
#367
Foley
County, AL
100 A
#368
Folsom
County, CA
100 A
#369
Forrest
County, IL
100 A
#370
Fort Benton
County, MT
100 A
#371
Fort Calhoun
County, NE
100 A
#372
Fort Campbell
County, KY
100 A
#373
Fort Harrison
County, MT
100 A
#374
Fort Hood
County, TX
100 A
#375
Fort Leavenworth
County, KS
100 A
#376
Fort Loramie
County, OH
100 A
#377
Fort Mccoy
County, WI
100 A
#378
Fort Recovery
County, OH
100 A
#379
Fort Riley
County, KS
100 A
#380
Fort Woth
County, TX
100 A
#381
Foster City
County, CA
100 A
#382
Fostoria
County, OH
100 A
#383
Fountain Valley
County, CA
100 A
#384
Fowler
County, MI
100 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.

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