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.