City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#5257
Bernalillo
County, NM
88 B
#5258 Big Lake
County, TX
88 B
#5259 Big Pine
County, CA
88 B
#5260 Big Rapids
County, MI
88 B
#5261 Bird Island
County, MN
88 B
#5262 Black Rock
County, AR
88 B
#5263 Blair
County, NE
88 B
#5264 Blissfield
County, MI
88 B
#5265 Bloomfield
County, MO
88 B
#5266 Blue Mound
County, TX
88 B
#5267 Bonne Terre
County, MO
88 B
#5268 Boonville
County, NY
88 B
#5269 Bowman
County, GA
88 B
#5270 Bridgeville
County, DE
88 B
#5271 Bristol
County, TN
88 B
#5272 Brookfield
County, WI
88 B
#5273 Brookings
County, OR
88 B
#5274 Buchanan
County, MI
88 B
#5275 Buchanan
County, VA
88 B
#5276 Buckner
County, KY
88 B
#5277 Buena Vista
County, VA
88 B
#5278 Bull Shoals
County, AR
88 B
#5279 Burleson
County, TX
88 B
#5280 Burr Ridge
County, IL
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.