City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#11137
Assumption
County, IL
0 F
#11138 Atascosa
County, TX
0 F
#11139 Atlanta
County, TX
0 F
#11140 Atoka
County, OK
0 F
#11141 Attica
County, OH
0 F
#11142 Axtell
County, TX
0 F
#11143 Baird
County, TX
0 F
#11144 Ballinger
County, TX
0 F
#11145 Barbourville
County, KY
0 F
#11146 Bardstown
County, KY
0 F
#11147 Bardwell
County, KY
0 F
#11148 Barnsdall
County, OK
0 F
#11149 Batesville
County, TX
0 F
#11150 Beachwood
County, NJ
0 F
#11151 Beeville
County, TX
0 F
#11152 Beggs
County, OK
0 F
#11153 Belen
County, NM
0 F
#11154 Belle Plaine
County, KS
0 F
#11155 Belleair
County, FL
0 F
#11156 Belleville
County, NJ
0 F
#11157 Bellevue
County, ID
0 F
#11158 Belmont
County, LA
0 F
#11159 Beloit
County, KS
0 F
#11160 Belzoni
County, MS
0 F
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.