WaterQ

City Water Quality Rankings

11,561 cities ranked by drinking water quality.

Popular city water quality comparisons

Trending Cities

#9721
Natchez
County, LA
52 D
#9722
Norwalk
County, IA
52 D
#9723
Orbisonia
County, PA
52 D
#9724
Orwigsburg
County, PA
52 D
#9725
Otego
County, NY
52 D
#9726
Plymouth
County, MA
52 D
#9727
Porter
County, TX
52 D
#9728
Rhome
County, TX
52 D
#9729
Roseland
County, LA
52 D
#9730
Russell
County, MA
52 D
#9731
Russell Springs
County, KY
52 D
#9732
Rutland
County, OH
52 D
#9733
San Lorenzo
County, PR
52 D
#9734
Santa Clara
County, NM
52 D
#9735
Sebastian
County, TX
52 D
#9736
Selma
County, AL
52 D
#9737
Shepherd
County, TX
52 D
#9738
Snow Shoe
County, PA
52 D
#9739
Sopchoppy
County, FL
52 D
#9740
South Royalton
County, VT
52 D
#9741
Stratford
County, OK
52 D
#9742
Stuart
County, FL
52 D
#9743
Yardville
County, NJ
52 D
#9744
Youngsville
County, NC
52 D

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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