City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#4657
Avon
County, MA
90 A
#4658 Babbitt
County, MN
90 A
#4659 Baraga
County, MI
90 A
#4660 Barceloneta
County, PR
90 A
#4661 Batesburg-Leesville
County, SC
90 A
#4662 Bath
County, ME
90 A
#4663 Bath
County, SC
90 A
#4664 Bayview
County, ID
90 A
#4665 Beach Haven
County, NJ
90 A
#4666 Beale Afb
County, CA
90 A
#4667 Belington
County, WV
90 A
#4668 Belle Rive
County, IL
90 A
#4669 Bellmead
County, TX
90 A
#4670 Bemidji
County, MN
90 A
#4671 Benton
County, TN
90 A
#4672 Berlin
County, NH
90 A
#4673 Bethany Beach
County, DE
90 A
#4674 Blanchard
County, OK
90 A
#4675 Bloomsburg
County, PA
90 A
#4676 Blowing Rock
County, NC
90 A
#4677 Blue Island
County, IL
90 A
#4678 Bound Brook
County, NJ
90 A
#4679 Bourne
County, MA
90 A
#4680 Bowman
County, ND
90 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.