City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#49
Aurora
County, IL
100 A
#50 Aurora
County, NE
100 A
#51 Aurora
County, SD
100 A
#52 Austell
County, GA
100 A
#53 Avon
County, MN
100 A
#54 Avon Lake
County, OH
100 A
#55 Azusa
County, CA
100 A
#56 Bailey
County, TX
100 A
#57 Bainbridge Island
County, WA
100 A
#58 Bainbridge Twp
County, OH
100 A
#59 Bar Nunn
County, WY
100 A
#60 Baraboo
County, WI
100 A
#61 Barker
County, NY
100 A
#62 Barnwell
County, SC
100 A
#63 Batavia
County, NY
100 A
#64 Batesland
County, SD
100 A
#65 Bath
County, NY
100 A
#66 Battle Creek
County, NE
100 A
#67 Baxter
County, MN
100 A
#68 Bayard
County, NE
100 A
#69 Beach Park
County, IL
100 A
#70 Beavercreek
County, OH
100 A
#71 Bedford
County, NY
100 A
#72 Bedford
County, OH
100 A
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.