Washington: drinking water & radon

Washington has 2,407 active community water systems. Since 2016, 268 reported health-based violations; 23 had a latest lead result above 15 ppb; 35 measured PFOA or PFOS at or above 4 ppt.

Radon zones in Washington

tap a county

Zone 1 · highestZone 2 · moderateZone 3 · low

All ZIP codes in Washington

708 ZIP codes.

98001Auburn98002Auburn98003Federal Way98004Bellevue98005Bellevue98006Bellevue98007Bellevue98008Bellevue98009Bellevue98010Black Diamond98011Bothell98012Bothell98013Burton98014Carnation98015Bellevue98019Duvall98020Edmonds98021Bothell98022Enumclaw98023Federal Way98024Fall City98025Hobart98026Edmonds98027Issaquah98028Kenmore98029Issaquah98030Kent98031Kent98032Kent98033Kirkland98034Kirkland98035Kent98036Lynnwood98037Lynnwood98038Maple Valley98039Medina98040Mercer Island98041Bothell98042Kent98043Mountlake Terrace98045North Bend98046Lynnwood98047Pacific98050Preston98051Ravensdale98052Redmond98053Redmond98055Renton98056Renton98057Renton98058Renton98059Renton98061Rollingbay98062Seahurst98063Federal Way98064Kent98065Snoqualmie98068Snoqualmie Pass98070Vashon98071Auburn98072Woodinville98073Redmond98074Sammamish98075Sammamish98077Woodinville98082Mill Creek98083Kirkland98087Lynnwood98089Kent98092Auburn98093Federal Way98101Seattle98102Seattle98103Seattle98104Seattle98105Seattle98106Seattle98107Seattle98108Seattle98109Seattle98110Bainbridge Island98111Seattle98112Seattle98113Seattle98114Seattle98115Seattle98116Seattle98117Seattle98118Seattle98119Seattle98121Seattle98122Seattle98124Seattle98125Seattle98126Seattle98127Seattle98129Seattle98131Seattle98133Seattle98134Seattle98136Seattle98138Seattle98139Seattle98141Seattle98144Seattle98145Seattle98146Seattle98148Seattle98154Seattle98155Seattle98158Seattle98160Seattle98161Seattle98164Seattle98165Seattle98166Seattle98168Seattle98170Seattle98174Seattle98175Seattle98177Seattle98178Seattle98181Seattle98185Seattle98188Seattle98190Seattle98191Seattle98194Seattle98195Seattle98198Seattle98199Seattle98201Everett98203Everett98204Everett98206Everett98207Everett98208Everett98213Everett98220Acme98221Anacortes98222Blakely Island98223Arlington98224Baring98225Bellingham98226Bellingham98227Bellingham98228Bellingham98229Bellingham98230Blaine98231Blaine98232Bow98233Burlington98235Clearlake98236Clinton98237Concrete98238Conway98239Coupeville98240Custer98241Darrington98243Deer Harbor98244Deming98245Eastsound98247Everson98248Ferndale98249Freeland98250Friday Harbor98251Gold Bar98252Granite Falls98253Greenbank98255Hamilton98256Index98257La Conner98258Lake Stevens98259North Lakewood98260Langley98261Lopez Island98262Lummi Island98263Lyman98264Lynden98266Maple Falls98267Marblemount98270Marysville98271Marysville98272Monroe98273Mount Vernon98274Mount Vernon98275Mukilteo98276Nooksack98277Oak Harbor98278Oak Harbor98279Olga98280Orcas98281Point Roberts98282Camano Island98283Rockport98284Sedro Woolley98286Shaw Island98287Silvana98288Skykomish98290Snohomish98291Snohomish98292Stanwood98293Startup98294Sultan98295Sumas98296Snohomish98297Waldron98303Anderson Island98304Ashford98305Beaver98310Bremerton98311Bremerton98312Bremerton98315Silverdale98320Brinnon98321Buckley98322Burley98323Carbonado98324Carlsborg98325Chimacum98326Clallam Bay98327Dupont98328Eatonville98329Gig Harbor98330Elbe98331Forks98332Gig Harbor98333Fox Island98335Gig Harbor98336Glenoma98337Bremerton98338Graham98339Port Hadlock98340Hansville98342Indianola98343Joyce98344Kapowsin98345Keyport98346Kingston98348La Grande98349Lakebay98350La Push98351Longbranch98352Sumner98353Manchester98354Milton98355Mineral98356Morton98357Neah Bay98358Nordland98359Olalla98360Orting98361Packwood98362Port Angeles98363Port Angeles98364Port Gamble98365Port Ludlow98366Port Orchard98367Port Orchard98368Port Townsend98370Poulsbo98371Puyallup98372Puyallup98373Puyallup98374Puyallup98375Puyallup98376Quilcene98377Randle98378Retsil98380Seabeck98381Sekiu98382Sequim98383Silverdale98384South Colby98385South Prairie98386Southworth98387Spanaway98388Steilacoom98390Sumner98391Bonney Lake98392Suquamish98393Tracyton98394Vaughn98395Wauna98396Wilkeson98397Longmire98398Paradise Inn98401Tacoma98402Tacoma98403Tacoma98404Tacoma98405Tacoma98406Tacoma98407Tacoma98408Tacoma98409Tacoma98411Tacoma98412Tacoma98413Tacoma98415Tacoma98417Tacoma98418Tacoma98419Tacoma98421Tacoma98422Tacoma98424Tacoma98430Camp Murray98431Tacoma98433Tacoma98438Mcchord Afb98439Lakewood98443Tacoma98444Tacoma98445Tacoma98446Tacoma98448Tacoma98464Tacoma98465Tacoma98466Tacoma98467University Place98471Tacoma98481Tacoma98490Tacoma98493Tacoma98496Lakewood98497Lakewood98498Lakewood98499Lakewood98501Olympia98502Olympia98503Lacey98504Olympia98505Olympia98506Olympia98507Olympia98508Olympia98509Lacey98511Tumwater98512Olympia98513Olympia98516Olympia98520Aberdeen98522Adna98524Allyn98526Amanda Park98527Bay Center98528Belfair98530Bucoda98531Centralia98532Chehalis98533Cinebar98535Copalis Beach98536Copalis Crossing98537Cosmopolis98538Curtis98539Doty98540East Olympia98541Elma98542Ethel98544Galvin98546Grapeview98547Grayland98548Hoodsport98550Hoquiam98552Humptulips98554Lebam98555Lilliwaup98556Littlerock98557Mccleary98559Malone98560Matlock98561Menlo98562Moclips98563Montesano98564Mossyrock98565Napavine98566Neilton98568Oakville98569Ocean Shores98570Onalaska98571Pacific Beach98572Pe Ell98575Quinault98576Rainier98577Raymond98579Rochester98580Roy98581Ryderwood98582Salkum98583Satsop98584Shelton98585Silver Creek98586South Bend98587Taholah98588Tahuya98589Tenino98590Tokeland98591Toledo98592Union98593Vader98595Westport98596Winlock98597Yelm98599Olympia98601Amboy98602Appleton98603Ariel98604Battle Ground98605Bingen98606Brush Prairie98607Camas98609Carrolls98610Carson98611Castle Rock98612Cathlamet98613Centerville98614Chinook98616Cougar98617Dallesport98619Glenwood98620Goldendale98621Grays River98622Heisson98623Husum98624Ilwaco98625Kalama98626Kelso98628Klickitat98629La Center98631Long Beach98632Longview98635Lyle98637Nahcotta98638Naselle98639North Bonneville98640Ocean Park98641Oysterville98642Ridgefield98643Rosburg98644Seaview98645Silverlake98647Skamokawa98648Stevenson98649Toutle98650Trout Lake98651Underwood98660Vancouver98661Vancouver98662Vancouver98663Vancouver98664Vancouver98665Vancouver98666Vancouver98668Vancouver98670Wahkiacus98671Washougal98672White Salmon98673Wishram98674Woodland98675Yacolt98682Vancouver98683Vancouver98684Vancouver98685Vancouver98686Vancouver98687Vancouver98801Wenatchee98802East Wenatchee98807Wenatchee98811Ardenvoir98812Brewster98813Bridgeport98814Carlton98815Cashmere98816Chelan98817Chelan Falls98819Conconully98821Dryden98822Entiat98823Ephrata98824George98826Leavenworth98827Loomis98828Malaga98829Malott98830Mansfield98831Manson98832Marlin98833Mazama98834Methow98836Monitor98837Moses Lake98840Okanogan98841Omak98843Orondo98844Oroville98845Palisades98846Pateros98847Peshastin98848Quincy98849Riverside98850Rock Island98851Soap Lake98852Stehekin98853Stratford98855Tonasket98856Twisp98857Warden98858Waterville98859Wauconda98860Wilson Creek98862Winthrop98901Yakima98902Yakima98903Yakima98904Yakima98907Yakima98908Yakima98909Yakima98920Brownstown98921Buena98922Cle Elum98923Cowiche98925Easton98926Ellensburg98930Grandview98932Granger98933Harrah98934Kittitas98935Mabton98936Moxee98937Naches98938Outlook98939Parker98940Ronald98941Roslyn98942Selah98943South Cle Elum98944Sunnyside98946Thorp98947Tieton98948Toppenish98950Vantage98951Wapato98952White Swan98953Zillah99001Airway Heights99003Chattaroy99004Cheney99005Colbert99006Deer Park99008Edwall99009Elk99011Fairchild Air Force Base99012Fairfield99013Ford99014Four Lakes99016Greenacres99017Lamont99018Latah99019Liberty Lake99020Marshall99021Mead99022Medical Lake99023Mica99025Newman Lake99026Nine Mile Falls99027Otis Orchards99029Reardan99030Rockford99031Spangle99032Sprague99033Tekoa99034Tumtum99036Valleyford99037Veradale99039Waverly99040Wellpinit99101Addy99102Albion99103Almira99104Belmont99105Benge99109Chewelah99110Clayton99111Colfax99113Colton99114Colville99115Coulee City99116Coulee Dam99117Creston99118Curlew99119Cusick99121Danville99122Davenport99123Electric City99124Elmer City99125Endicott99126Evans99128Farmington99129Fruitland99130Garfield99131Gifford99133Grand Coulee99134Harrington99135Hartline99136Hay99137Hunters99138Inchelium99139Ione99140Keller99141Kettle Falls99143Lacrosse99144Lamona99146Laurier99147Lincoln99148Loon Lake99149Malden99150Malo99152Metaline99153Metaline Falls99154Mohler99155Nespelem99156Newport99157Northport99158Oakesdale99159Odessa99160Orient99161Palouse99163Pullman99166Republic99167Rice99169Ritzville99170Rosalia99171Saint John99173Springdale99174Steptoe99176Thornton99179Uniontown99180Usk99181Valley99185Wilbur99201Spokane99202Spokane99203Spokane99204Spokane99205Spokane99206Spokane99207Spokane99208Spokane99209Spokane99210Spokane99211Spokane99212Spokane99213Spokane99214Spokane99215Spokane99216Spokane99217Spokane99218Spokane99219Spokane99220Spokane99223Spokane99224Spokane99228Spokane99252Spokane99256Spokane99258Spokane99260Spokane99301Pasco99302Pasco99320Benton City99321Beverly99322Bickleton99323Burbank99324College Place99326Connell99328Dayton99329Dixie99330Eltopia99333Hooper99335Kahlotus99336Kennewick99337Kennewick99338Kennewick99341Lind99343Mesa99344Othello99345Paterson99346Plymouth99347Pomeroy99348Prescott99349Mattawa99350Prosser99352Richland99353West Richland99354Richland99356Roosevelt99357Royal City99359Starbuck99360Touchet99361Waitsburg99362Walla Walla99363Wallula99371Washtucna99401Anatone99402Asotin99403Clarkston

What this is — and isn’t. These are records your water utility and state reported to the EPA, and the EPA’s radon map for your county. They describe the system and the area, not the water from your own tap or the air in your home. For that, read your utility’s annual Consumer Confidence Report and test: lead and radon tests are inexpensive.

Questions

How many water systems in Washington have violations?

268 of 2,407 active community water systems in Washington reported at least one health-based violation since 2016 (EPA SDWIS).

What is the radon risk in Washington?

130 ZIP codes are in EPA radon zone 1 (highest potential), 140 in zone 2 and 438 in zone 3. EPA recommends testing every home.