WaterQ

City Water Quality Rankings

11,696 cities ranked by drinking water quality.

Popular city water quality comparisons

Trending Cities

#5377
Glenwood
County, MN
88 B
#5378
Gonzales
County, CA
88 B
#5379
Gonzales
County, TX
88 B
#5380
Gorham
County, NH
88 B
#5381
Gowanda
County, NY
88 B
#5382
Grand Rivers
County, KY
88 B
#5383
Grandville
County, MI
88 B
#5384
Granger
County, TX
88 B
#5385
Grayson
County, KY
88 B
#5386
Green Valley
County, CA
88 B
#5387
Greensboro
County, MD
88 B
#5388
Greenville
County, TX
88 B
#5389
Grosse Ile
County, MI
88 B
#5390
Groveland
County, MA
88 B
#5391
Hagerman
County, NM
88 B
#5392
Hallsville
County, MO
88 B
#5393
Hamilton
County, MO
88 B
#5394
Hamilton
County, OH
88 B
#5395
Hammond
County, LA
88 B
#5396
Hampton
County, GA
88 B
#5397
Hancock
County, MA
88 B
#5398
Hancock
County, MD
88 B
#5399
Happy Camp
County, CA
88 B
#5400
Hardin
County, KY
88 B

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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