City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#457
Guyton
County, GA
100 A
#458 Hallowell
County, ME
100 A
#459 Halls
County, TN
100 A
#460 Hamburg
County, AR
100 A
#461 Hampden
County, ME
100 A
#462 Hancocks Bridge
County, NJ
100 A
#463 Hanover
County, VA
100 A
#464 Happy Valley
County, OR
100 A
#465 Hardin
County, IL
100 A
#466 Harpersville
County, AL
100 A
#467 Harrah
County, WA
100 A
#468 Harrison
County, MI
100 A
#469 Harrison Township
County, MI
100 A
#470 Hartford
County, CT
100 A
#471 Hartford
County, WI
100 A
#472 Hartland
County, MI
100 A
#473 Hartley
County, IA
100 A
#474 Hartsville
County, SC
100 A
#475 Hartville
County, OH
100 A
#476 Harvard
County, NE
100 A
#477 Haskell
County, AR
100 A
#478 Hatfield
County, PA
100 A
#479 Hawkins
County, TX
100 A
#480 Hazel Park
County, MI
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.