Washington Water Quality Reports
Comprehensive water quality data for 443 cities across Washington. View EPA-verified contaminant levels and get filter recommendations.
443
Cities
60
Safe
273
Monitor
110
At Risk
Water Quality by County
Explore aggregated water quality scores across Washington counties. Scores are calculated based on EPA data and weighted by population.
Loading map...
Data from 388 cities serving 40,486,635 people across 35 counties.
Common Contaminants in Washington
383 cities in Washington have at least one contaminant above EPA health guidelines.
Worried about Bromodichloromethane in your water?
Upload your water test (PDF or a photo) and we'll email a plain-English reading of your Bromodichloromethane result β and every other number β free. Educational only, no medical claims.
Your upload also helps us keep local water data accurate β we only ever share anonymized, area-level summaries.
Upload my testCities in Washington
Tukwila
People Served1186K
Contaminants Tested475
Above Guidelines6
View Report β
Lake Forest Park
People Served1093K
Contaminants Tested339
Above Guidelines5
View Report β
Bryn Mawr-Skyway
People Served1081K
Contaminants Tested465
Above Guidelines5
View Report β
Burien
People Served1081K
Contaminants Tested363
Above Guidelines5
View Report β
Boulevard Park
People Served994K
Contaminants Tested187
Above Guidelines3
View Report β
White Center
People Served994K
Contaminants Tested187
Above Guidelines3
View Report β
Shoreline
People Served987K
Contaminants Tested187
Above Guidelines3
View Report β
Seattle
People Served956K
Contaminants Tested331
Above Guidelines4
View Report β
Federal Way
People Served507K
Contaminants Tested533
Above Guidelines4
View Report β
Five Corners
People Served484K
Contaminants Tested370
Above Guidelines1
View Report β
Hazel Dell
People Served484K
Contaminants Tested370
Above Guidelines1
View Report β
Hockinson
People Served484K
Contaminants Tested370
Above Guidelines1
View Report β
Orchards
People Served484K
Contaminants Tested370
Above Guidelines1
View Report β
Redmond
People Served454K
Contaminants Tested373
Above Guidelines3
View Report β
Vancouver
People Served406K
Contaminants Tested903
Above Guidelines3
View Report β
Bothell
People Served391K
Contaminants Tested87
Above Guidelines4
View Report β
Frederickson
People Served380K
Contaminants Tested517
Above Guidelines4
View Report β
Parkland
People Served380K
Contaminants Tested518
Above Guidelines3
View Report β
Minnehaha
People Served373K
Contaminants Tested174
Above Guidelines1
View Report β
Alderton
People Served371K
Contaminants Tested518
Above Guidelines7
View Report β
Issaquah
People Served367K
Contaminants Tested398
Above Guidelines4
View Report β
Clover Creek
People Served365K
Contaminants Tested517
Above Guidelines3
View Report β
Midland
People Served365K
Contaminants Tested517
Above Guidelines3
View Report β
Spokane Valley
People Served363K
Contaminants Tested1599
Above Guidelines14
View Report β
Bonney Lake
People Served357K
Contaminants Tested351
Above Guidelines3
View Report β
Prairie Ridge
People Served357K
Contaminants Tested351
Above Guidelines3
View Report β
Puyallup
People Served357K
Contaminants Tested593
Above Guidelines8
View Report β
Kirkland
People Served351K
Contaminants Tested167
Above Guidelines4
View Report β
Graham
People Served350K
Contaminants Tested515
Above Guidelines4
View Report β
South Hill
People Served349K
Contaminants Tested355
Above Guidelines3
View Report β
Summit View
People Served335K
Contaminants Tested356
Above Guidelines2
View Report β
Summit
People Served335K
Contaminants Tested356
Above Guidelines2
View Report β
Waller
People Served335K
Contaminants Tested356
Above Guidelines2
View Report β
Orting
People Served330K
Contaminants Tested503
Above Guidelines3
View Report β
Tehaleh
People Served329K
Contaminants Tested358
Above Guidelines2
View Report β
Fircrest
People Served327K
Contaminants Tested357
Above Guidelines3
View Report β
Fife Heights
People Served327K
Contaminants Tested341
Above Guidelines4
View Report β
Prairie Heights
People Served326K
Contaminants Tested291
Above Guidelines3
View Report β
Yarrow Point
People Served326K
Contaminants Tested158
Above Guidelines2
View Report β
Tacoma
People Served322K
Contaminants Tested456
Above Guidelines3
View Report β
Auburn
People Served320K
Contaminants Tested679
Above Guidelines8
View Report β
Browns Point
People Served319K
Contaminants Tested195
Above Guidelines1
View Report β
Dash Point
People Served319K
Contaminants Tested195
Above Guidelines1
View Report β
McMillin
People Served319K
Contaminants Tested195
Above Guidelines1
View Report β
Ruston
People Served319K
Contaminants Tested195
Above Guidelines1
View Report β
University Place
People Served319K
Contaminants Tested195
Above Guidelines1
View Report β
Kent
People Served288K
Contaminants Tested520
Above Guidelines7
View Report β
Bellevue
People Served276K
Contaminants Tested157
Above Guidelines2
View Report β
Town and Country
People Served275K
Contaminants Tested547
Above Guidelines5
View Report β
Beaux Arts Village
People Served262K
Contaminants Tested149
Above Guidelines1
View Report β
Clyde Hill
People Served262K
Contaminants Tested143
Above Guidelines1
View Report β
Hunts Point
People Served262K
Contaminants Tested143
Above Guidelines1
View Report β
Medina
People Served262K
Contaminants Tested143
Above Guidelines1
View Report β
Union Hill-Novelty Hill
People Served261K
Contaminants Tested545
Above Guidelines5
View Report β
Lynnwood
People Served261K
Contaminants Tested57
Above Guidelines2
View Report β
Airway Heights
People Served254K
Contaminants Tested371
Above Guidelines4
View Report β
Spokane
People Served253K
Contaminants Tested867
Above Guidelines7
View Report β
Four Lakes
People Served245K
Contaminants Tested373
Above Guidelines5
View Report β
Renton
People Served225K
Contaminants Tested594
Above Guidelines5
View Report β
Mukilteo
People Served222K
Contaminants Tested57
Above Guidelines2
View Report β
Clearview
People Served221K
Contaminants Tested191
Above Guidelines3
View Report β
Maltby
People Served221K
Contaminants Tested191
Above Guidelines3
View Report β
Bothell West
People Served198K
Contaminants Tested55
Above Guidelines2
View Report β
Mill Creek East
People Served198K
Contaminants Tested60
Above Guidelines2
View Report β
Mill Creek
People Served198K
Contaminants Tested60
Above Guidelines2
View Report β
Alderwood Manor
People Served198K
Contaminants Tested43
Above Guidelines1
View Report β
Bothell East
People Served198K
Contaminants Tested43
Above Guidelines1
View Report β
Brier
People Served198K
Contaminants Tested43
Above Guidelines1
View Report β
Lake Stickney
People Served198K
Contaminants Tested43
Above Guidelines1
View Report β
Larch Way
People Served198K
Contaminants Tested43
Above Guidelines1
View Report β
Martha Lake
People Served198K
Contaminants Tested43
Above Guidelines1
View Report β
Meadowdale
People Served198K
Contaminants Tested43
Above Guidelines1
View Report β
North Lynnwood
People Served198K
Contaminants Tested43
Above Guidelines1
View Report β
Picnic Point
People Served198K
Contaminants Tested43
Above Guidelines1
View Report β
Des Moines
People Served193K
Contaminants Tested356
Above Guidelines4
View Report β
Lakeland North
People Served188K
Contaminants Tested338
Above Guidelines3
View Report β
Everett
People Served170K
Contaminants Tested230
Above Guidelines4
View Report β
Eastmont
People Served168K
Contaminants Tested349
Above Guidelines4
View Report β
Tanglewilde
People Served161K
Contaminants Tested342
Above Guidelines5
View Report β
Sisco Heights
People Served152K
Contaminants Tested577
Above Guidelines8
View Report β
SeaTac
People Served143K
Contaminants Tested204
Above Guidelines4
View Report β
Fern Prairie
People Served142K
Contaminants Tested368
Above Guidelines1
View Report β
Battle Ground
People Served140K
Contaminants Tested341
Above Guidelines2
View Report β
Cherry Grove
People Served140K
Contaminants Tested341
Above Guidelines2
View Report β
Lewisville
People Served140K
Contaminants Tested341
Above Guidelines2
View Report β
Venersborg
People Served140K
Contaminants Tested341
Above Guidelines2
View Report β
Lake Cassidy
People Served133K
Contaminants Tested319
Above Guidelines5
View Report β
Ridgefield
People Served129K
Contaminants Tested476
Above Guidelines2
View Report β
Port Orchard
People Served125K
Contaminants Tested4196
Above Guidelines35
View Report β
Milton
People Served125K
Contaminants Tested322
Above Guidelines5
View Report β
Pacific
People Served124K
Contaminants Tested287
Above Guidelines3
View Report β
Woodland
People Served123K
Contaminants Tested1809
Above Guidelines6
View Report β
Fairwood
People Served121K
Contaminants Tested361
Above Guidelines4
View Report β
Lakeland South
People Served117K
Contaminants Tested176
Above Guidelines2
View Report β
Lake Morton-Berrydale
People Served111K
Contaminants Tested224
Above Guidelines3
View Report β
Amboy
People Served111K
Contaminants Tested196
Above Guidelines0
View Report β
Barberton
People Served111K
Contaminants Tested196
Above Guidelines0
View Report β
Brush Prairie
People Served111K
Contaminants Tested196
Above Guidelines0
View Report β
Dollars Corner
People Served111K
Contaminants Tested196
Above Guidelines0
View Report β
Duluth
People Served111K
Contaminants Tested196
Above Guidelines0
View Report β
Showing top 100 of 443 cities by population.
Use the search box above to find any city in Washington.
Stay Informed About Your Water Quality
Get EPA reports, filter recommendations, and safety alerts for your area.
Join 10,000+ people protecting their families. Unsubscribe anytime.