City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#4681
Brackettville
County, TX
90 A
#4682 Brawley
County, CA
90 A
#4683 Bremo Bluff
County, VA
90 A
#4684 Brentwood
County, CA
90 A
#4685 Broadalbin
County, NY
90 A
#4686 Brooklet
County, GA
90 A
#4687 Brookline
County, MA
90 A
#4688 Brookneal
County, VA
90 A
#4689 Bruceton
County, TN
90 A
#4690 Burdett
County, NY
90 A
#4691 Burns
County, WY
90 A
#4692 Cambria
County, CA
90 A
#4693 Canaan
County, IN
90 A
#4694 Carson City
County, MI
90 A
#4695 Carterville
County, IL
90 A
#4696 Carterville
County, MO
90 A
#4697 Cascade
County, ID
90 A
#4698 Castile
County, NY
90 A
#4699 Cataula
County, GA
90 A
#4700 Cave Spring
County, GA
90 A
#4701 Champlain
County, NY
90 A
#4702 Chelsea
County, MI
90 A
#4703 Cherry Valley
County, AR
90 A
#4704 Chester
County, NY
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.