City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#5233
Alserson
County, WV
88 B
#5234 Amory
County, MS
88 B
#5235 Anacoco
County, LA
88 B
#5236 Andover
County, MA
88 B
#5237 Angelus Oaks
County, CA
88 B
#5238 Anoka
County, MN
88 B
#5239 Antwerp
County, OH
88 B
#5240 Arden Hills
County, MN
88 B
#5241 Arecibo
County, PR
88 B
#5242 Ashburn
County, VA
88 B
#5243 Ashland
County, OR
88 B
#5244 Atlantic
County, IA
88 B
#5245 Atlantic Beach
County, NC
88 B
#5246 Augusta
County, KY
88 B
#5247 Baldwin
County, WI
88 B
#5248 Bally
County, PA
88 B
#5249 Balsam Lake
County, WI
88 B
#5250 Bangor
County, WI
88 B
#5251 Baxter
County, KY
88 B
#5252 Bayou La Batre
County, AL
88 B
#5253 Becker
County, MN
88 B
#5254 Bellaire
County, OH
88 B
#5255 Bellevue
County, IA
88 B
#5256 Bellevue
County, OH
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.