City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#8665
Towoac
County, CO
71 C
#8666 Walnut Creek
County, OH
71 C
#8667 Waterbury
County, VT
71 C
#8668 Wayland
County, MA
71 C
#8669 Welch
County, MN
71 C
#8670 Ackerman
County, MS
70 C
#8671 Adair
County, OK
70 C
#8672 Alachua
County, FL
70 C
#8673 Alfred
County, NY
70 C
#8674 Ambridge
County, PA
70 C
#8675 Ash Fork
County, AZ
70 C
#8676 Bartlett
County, IL
70 C
#8677 Bayboro
County, NC
70 C
#8678 Bendersville
County, PA
70 C
#8679 Bethel
County, OH
70 C
#8680 Birmingham
County, MI
70 C
#8681 Bladenboro
County, NC
70 C
#8682 Bowling Green
County, KY
70 C
#8683 Bradley
County, CA
70 C
#8684 Branchland
County, WV
70 C
#8685 Burkesville
County, KY
70 C
#8686 Calexico
County, CA
70 C
#8687 Carefree
County, AZ
70 C
#8688 Central City
County, IA
70 C
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.