City Water Quality Rankings
11,561 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#385
Hartley
County, IA
100 A
#386 Hartsville
County, SC
100 A
#387 Hartville
County, OH
100 A
#388 Haskell
County, AR
100 A
#389 Hatfield
County, PA
100 A
#390 Hazel Park
County, MI
100 A
#391 Headland
County, AL
100 A
#392 Heber Springs
County, AR
100 A
#393 Hebron
County, MD
100 A
#394 Hemlock
County, NY
100 A
#395 Hermantown
County, MN
100 A
#396 Hermitage
County, AR
100 A
#397 Hesperia
County, CA
100 A
#398 Heyburn
County, ID
100 A
#399 Heyworth
County, IL
100 A
#400 Hickman
County, NE
100 A
#401 Hickory Ridge
County, AR
100 A
#402 Hidden Valley Lake
County, CA
100 A
#403 Hideout
County, UT
100 A
#404 Higginson
County, AR
100 A
#405 Highfall
County, AR
100 A
#406 Highland
County, MI
100 A
#407 Highland
County, IN
100 A
#408 Highland Park
County, NJ
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.