City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#5209
Thunderbolt
County, GA
89 B
#5210 Trion
County, GA
89 B
#5211 Tunica
County, MS
89 B
#5212 Tuscaloosa
County, AL
89 B
#5213 Umatilla
County, OR
89 B
#5214 Uvalde
County, TX
89 B
#5215 Van Alstyne
County, TX
89 B
#5216 Village Of Menands
County, NY
89 B
#5217 Vint Hill
County, VA
89 B
#5218 Vinton
County, LA
89 B
#5219 Washburn
County, WI
89 B
#5220 Waynesboro
County, PA
89 B
#5221 Wellston
County, OH
89 B
#5222 Wenonah
County, NJ
89 B
#5223 Westland
County, MI
89 B
#5224 Williston
County, ND
89 B
#5225 Wrens
County, GA
89 B
#5226 Yamhill
County, OR
89 B
#5227 Zanesville
County, OH
89 B
#5228 Adairville
County, KY
88 B
#5229 Albany
County, MN
88 B
#5230 Albany
County, WI
88 B
#5231 Aledo
County, IL
88 B
#5232 Alexandria
County, VA
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.