City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#5113
Glide
County, OR
89 B
#5114 Grafton
County, OH
89 B
#5115 Green Valley Lake
County, CA
89 B
#5116 Greensboro
County, AL
89 B
#5117 Greenville
County, NC
89 B
#5118 Gresham
County, OR
89 B
#5119 Gretna
County, NE
89 B
#5120 Hamilton
County, IL
89 B
#5121 Hazel Green
County, WI
89 B
#5122 Hillrose
County, CO
89 B
#5123 Hillsboro
County, NH
89 B
#5124 Hilmar
County, CA
89 B
#5125 Irrigon
County, OR
89 B
#5126 Ivey
County, GA
89 B
#5127 Jasonville
County, IN
89 B
#5128 Jasper
County, GA
89 B
#5129 Jbsa Lackland
County, TX
89 B
#5130 Joyce
County, WA
89 B
#5131 Kechi
County, KS
89 B
#5132 Kelly
County, LA
89 B
#5133 Kensington
County, CT
89 B
#5134 Kimberly
County, WI
89 B
#5135 La Grange
County, CA
89 B
#5136 Lakin
County, KS
89 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.