Washington tap water quality
PFAS results for 248 Washington water systems from EPA's latest nationwide testing. Enter your address for your own utility's record and a filter recommendation.
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248systems tested
27%had PFAS detected
34over EPA's 4 ppt limit
Highest PFAS levels in Washington
| Water system | Max PFOA (ppt) | Max PFOS (ppt) |
|---|---|---|
| Artondale Water System | 6.3 | 153.6 |
| City of Moses Lake | — | 52.2 |
| City of Vancouver | 11.5 | 18.6 |
| City of Richland | 10.1 | 17 |
| Parkland Light & Water Company | 6.2 | 13.8 |
| Camas Municipal Water Sewer System | 4.4 | 12 |
| Quistorff | — | 12 |
| Trentwood Irrigation District 3 | 5.1 | 12 |
| City of Kennewick | 4.6 | 11.5 |
| JBLM Lewis | 6.8 | 11.1 |
All Washington water systems
- Alderwood Water District
- Arlington Water Dept
- Beacon Hill Water & Sewer District
- Birch Bay Water & Sewer District
- Bonney Lake Water Department City
- Camas Municipal Water Sewer System ⚠
- Cedar River Water & Sewer District
- Centralia Public Works - Water ⚠
- Chehalis Water Department
- Chelan Co PUD 1
- City of Aberdeen
- City of Anacortes
- City of Auburn
- City of Bainbridge Island
- City of Battle Ground Water Dept
- City of Bellevue
- City of Bellingham-Water Division
- City of Bothell Water
- City of Bremerton
- City of Cheney
- City of Dupont Water System
- City of Duvall
- City of Edmonds
- City of Everett Public Works Dept.
- City of Grandview
- City of Kelso
- City of Kennewick ⚠
- City of Kirkland
- City of Lynnwood
- City of Mercer Island
- City of Moses Lake ⚠
- City of Mountlake Terrace
- City of Oak Harbor
- City of Olympia ⚠
- City of Port Angeles
- City of Port Townsend
- City of Poulsbo
- City of Pullman Water Department
- City of Puyallup
- City of Redmond Water System ⚠
- City of Renton
- City of Richland ⚠
- City of Selah
- City of Sequim
- City of Shelton
- City of Snohomish
- City of Spokane ⚠
- City of Stanwood Water Dept
- City of Sumner
- City of Sunnyside
- City of Tacoma Water Division
- City of Tumwater
- City of Vancouver ⚠
- City of Washougal ⚠
- City of Wenatchee
- City of West Richland
- City of Woodland
- City of Yakima Water Division
- City of Yelm
- Clark Public Utilities ⚠
- Coal Creek Utility District
- Consolidated Irrig Dist 19 System 2
- Covington Water District ⚠
- Cross Valley Water District
- East Wenatchee Water District
- Eastern Washington University
- Ellensburg Water Dept
- Enumclaw Water Department
- Ferndale Wa
- Fife Dept of Public Works
- Firgrove Mutual INC ⚠
- Fruitland Mutual Water Company
- Gig Harbor Water Dept
- Highline Water District
- Hoquiam Water Department
- Issaquah Water System
- JBLM Lewis ⚠
- JBLM McChord Field ⚠
- Kent Water Department
- King County Water District #125
- King County Water District #20
- King County Water District #49
- King County Water District No 90
- Lacey Water Department
- Lake Meridian Water District
- Lakehaven Water and Sewer District ⚠
- Lakewood Water District ⚠
- Liberty Lake Sewer & Water District
- Longview Water Department
- Lwwsd - South Shore Water System
- Lynden Water Department
- Marysville Utilities
- Modern Electric Water Co
- Monroe Water System Wa
- Mukilteo Water & Wastewater Distr
- Naval Air Station/Whidbey Island
- Naval Base Kitsap at Bangor
- Naval Base Kitsap at Bremerton
- Nob Hill Water Association
- North City Water District
- North Peninsula
- North Perry Ave Water District
- Northshore Utility District
- Olympic View Water & Sewer District
- Parkland Light & Water Company ⚠
- Pasco Water Department
- Port of Seattle/Seatac Airport
- Port Orchard Water
- PUD #1 of Asotin County
- Quimper
- Ridgefield Public Works
- Sammamish Plateau Water & Sewer ⚠
- Seattle Public Utilities
- Silver Lake Water & Sewer District
- Silverdale Water Dist 16
- Skagit County PUD 1 Judy Res
- Skyway Water & Sewer
- Sno PUD 1 - Lake Stevens
- Snoqualmie Water
- Soos Creek Water & Sewer District
- Southwood Water System ⚠
- Spanaway Water Company ⚠
- Spo Co Water Dist 3 Sys 2
- Summit Water & Supply Co
- Tukwila Water Department
- Vera Water & Power
- Walla Walla Water Division
- Washington State University
- West Sound Utility District #1 ⚠
- Whitworth Water District 2 ⚠
- Woodinville Water District
- Artondale Water System ⚠
- Bayshore
- Benton City Water ⚠
- Buckley Water
- Castle Rock Municipal Water
- Cedar Grove Mobile Park
- City of Airway Heights
- City of Blaine
- City of Chelan Water Dept
- City of Colfax Water Department
- City of Connell
- City of Deer Park ⚠
- City of Elma
- City of Everson
- City of Fircrest
- City of Gold Bar
- City of Goldendale
- City of Granite Falls
- City of Harrington
- City of Kalama
- City of Mattawa
- City of Medical Lake ⚠
- City of Milton
- City of Montesano
- City of North Bend
- City of Omak
- City of Orting
- City of Pacific
- City of Prosser
- City of Quincy Water Department
- City of Tenino
- City of Warden
- City of White Salmon
- College Place Water Dept
- Columbia Valley Water District
- Colville Water Department
- Consolidated Irrig Dist 19 System 1
- Consolidated Support Services
- Crescent Water Assn
- Crystal Mountain INC
- Dungeness Meadows
- East Spokane Water Dist 1 ⚠
- Eastsound Water Users Association
- Eatonville Water Dept
- Emerald Lake
- Energy Dept of/200w
- Ephrata Water Department
- Fairchild Air Force Base ⚠
- Forks Municipal Water Dept
- Granger Water Department
- Grays Harbor Co Water Dist 2
- Heights Water
- Hi Valley View
- Horizons West
- Irvin Water District #6
- King County Water District #54
- King County Water District 119
- Lake Chelan Reclamation District
- Lake Cushman System 5
- Lake Forest Park Water District
- Long Beach Water Department
- Longmire
- Lost Lake Property Owners Assn
- Manchester Water District
- Mccormick Woods
- Minterbrook
- Model Irrigation Dist #18 ⚠
- Mountain View-Edgewood Water Co
- Moxee Water Department
- Ne Sammamish Sewer & Water District
- North Bainbridge Water Co
- North Beach Water
- Northwest Trek
- Northwest Water Assoc. Inc. ⚠
- Ocean Shores Water Dept
- Orchard Avenue Irrigation Dist 6
- Othello Water Department
- Parkview Terrace
- Pasadena Park Irr Dist 17
- Pattison
- Peacock Hill
- Point Evans
- Port Angeles Composite
- Quistorff ⚠
- Raymond Water Department
- Rogers Group Properties I LLC
- Sallal Water Association INC
- Seabeck
- Seascape Water Association
- Seven Lakes Water Association
- Shelter Bay Community INC
- Snake River Housing Water System
- Snoqualmie Pass Utility District
- Spo Co Water Dist 3 Sys 3
- Spo Co Water Dist 3 Sys 4
- Spokane Business & Industrial Park
- Stevens Co PUD - Suncrest
- Stevens Co PUD - Valley
- Stevens Pass Water System
- Sultan Water Department
- Suquamish
- Tanglewilde-Thompson Place 600
- Toppenish Water Department
- Town of Coupeville ⚠
- Town of Friday Harbor
- Town of Naches
- Town of Steilacoom
- Trentwood Irrigation District 3 ⚠
- Union Gap Water
- Union Hill Water Association INC
- Vinland
- Wapato Waterworks
- Water District 19
- West Sequim Bay INC
- Westport Water Department
- Whatcom County Water Dist 13
- Yak Co - Terrace Heights
Questions
Does Washington tap water have PFAS?
In EPA's UCMR 5 testing, 68 of 248 Washington water systems (27%) had at least one PFAS compound detected, and 34 had PFOA or PFOS above EPA's 4 ppt limit.
What is the best water filter in Washington?
It depends on your utility. Where PFAS is above EPA's limit, reverse osmosis is the most effective option. Where the main concern is lead from home plumbing or chlorine taste, a certified carbon filter is enough. Enter your address to get a match.