WaterQ

City Water Quality Rankings in Washington

259 cities ranked by drinking water quality.

All States AL AK AZ AR CA CO CT DE FL GA HI ID IL IN IA KS KY LA ME MD MA MI MN MS MO MT NE NV NH NJ NM NY NC ND OH OK OR PA RI SC SD TN TX UT VT VA WA WV WI WY

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 →

Trending Cities

Fairbanks, AK Fresno, CA San Jose, CA Sacramento, CA San Francisco, CA Houston, TX Fargo, ND
#145
Selah
County, WA
97 A
#146
Silverdale
County, WA
97 A
#147
Tacoma
County, WA
97 A
#148
Yakima
County, WA
97 A
#149
Zillah
County, WA
97 A
#150
Algona
County, WA
96 A
#151
Allyn
County, WA
96 A
#152
Battle Ground
County, WA
96 A
#153
Belfair
County, WA
96 A
#154
Benton City
County, WA
96 A
#155
Birch Bay
County, WA
96 A
#156
Chattaroy
County, WA
96 A
#157
Eastsound
County, WA
96 A
#158
Enumclaw
County, WA
96 A
#159
Fairchild Afb
County, WA
96 A
#160
Fall City
County, WA
96 A
#161
Fox Island
County, WA
96 A
#162
George
County, WA
96 A
#163
Goldbar
County, WA
96 A
#164
Lake Tapps
County, WA
96 A
#165
Lakewood
County, WA
96 A
#166
Long Beach
County, WA
96 A
#167
Loon Lake
County, WA
96 A
#168
Manchester
County, WA
96 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.

Explore More Water Quality Data

State Rankings National Rankings Compare Cities All Water Systems