City Water Quality Rankings
11,696 cities ranked by drinking water quality.
Popular city water quality comparisons
Trending Cities
#1561
Haslet
County, TX
98 A
#1562 Hatch
County, NM
98 A
#1563 Hawthorne
County, CA
98 A
#1564 Hayden
County, ID
98 A
#1565 Hazen
County, ND
98 A
#1566 Hearne
County, TX
98 A
#1567 Hector
County, MN
98 A
#1568 Hewitt
County, TX
98 A
#1569 Hiawassee
County, GA
98 A
#1570 Highlands Ranch
County, CO
98 A
#1571 Hillsboro
County, ND
98 A
#1572 Hillsborough
County, CA
98 A
#1573 Hilsboro
County, MO
98 A
#1574 Hilton
County, NY
98 A
#1575 Hollins
County, AL
98 A
#1576 Hollky Springs
County, MS
98 A
#1577 Holyoke
County, CO
98 A
#1578 Hoodsport
County, WA
98 A
#1579 Horizon City
County, TX
98 A
#1580 Horse Cave
County, KY
98 A
#1581 Houlton
County, ME
98 A
#1582 Hubbard
County, OR
98 A
#1583 Hull
County, IA
98 A
#1584 Humboldt
County, KS
98 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.