WaterQ

City Water Quality Rankings in Washington

259 cities ranked by drinking water quality.

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Popular city water quality comparisons

Anderson Island, WA vs Asotin, WA Compare → Bainbridge Island, WA vs Bellevue, WA Compare → Bridgeport, WA vs Burien, WA Compare → Cheney, WA vs Clarkston, WA Compare →

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#1
Anderson Island
County, WA
100 A
#2
Asotin
County, WA
100 A
#3
Bainbridge Island
County, WA
100 A
#4
Bellevue
County, WA
100 A
#5
Bridgeport
County, WA
100 A
#6
Burien
County, WA
100 A
#7
Cheney
County, WA
100 A
#8
Clarkston
County, WA
100 A
#9
Clinton
County, WA
100 A
#10
College Place
County, WA
100 A
#11
Connell
County, WA
100 A
#12
Coulee Dam
County, WA
100 A
#13
Desert Aire
County, WA
100 A
#14
Duvall
County, WA
100 A
#15
Edgewood
County, WA
100 A
#16
Ellensburg
County, WA
100 A
#17
Fircrest
County, WA
100 A
#18
Harrah
County, WA
100 A
#19
Ilwaco
County, WA
100 A
#20
Kirkland
County, WA
100 A
#21
Kittitas
County, WA
100 A
#22
Laconner
County, WA
100 A
#23
Liberty Lake
County, WA
100 A
#24
Mabton
County, WA
100 A

Frequently Asked Questions

How are city water quality rankings calculated in Washington?

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 cities in Washington?

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.

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