June 17, 2026
Nitrates in Washington Drinking Water 2026
Nitrates in Washington Drinking Water 2026
Nitrates contamination has been detected in drinking water systems across Washington. High nitrate levels cause methemoglobinemia (blue baby syndrome) in infants. EPA MCL is 10 mg/L. Our analysis of Washington water quality reports found Nitrates present in 449 cities and water systems statewide. If you live in one of these communities, a certified home filter can significantly reduce your exposure -- browse Nitrates filters at PureWaterGuys.
Cities in Washington with Nitrates Detected
The following 449 water systems in Washington reported Nitrates in their annual water quality reports. Click any city to read the full report.
| City / Water System | Water Quality Report |
|---|---|
| Aberdeen Wa Water Quality Report 2026 | View Report |
| Acme Wa Water Quality Report 2026 | View Report |
| Addy Wa Water Quality Report 2026 | View Report |
| Adna Wa Water Quality Report 2026 | View Report |
| Airway Heights Wa Water Quality Report 2026 | View Report |
| Airway Wa Water Quality Report 2026 | View Report |
| Albion Wa Water Quality Report 2026 | View Report |
| Alder Wa Water Quality Report 2026 | View Report |
| Algona Wa Water Quality Report 2026 | View Report |
| Allyn Wa Water Quality Report 2026 | View Report |
| Almira Wa Water Quality Report 2026 | View Report |
| Aloha Wa Water Quality Report 2026 | View Report |
| Amanda Park Wa Water Quality Report 2026 | View Report |
| Amboy Wa Water Quality Report 2026 | View Report |
| Anacortes Wa Water Quality Report 2026 | View Report |
| Anderson Island Wa Water Quality Report 2026 | View Report |
| Ardenvoir Wa Water Quality Report 2026 | View Report |
| Arlington Wa Water Quality Report 2026 | View Report |
| Ashford Wa Water Quality Report 2026 | View Report |
| Asotin Wa Water Quality Report 2026 | View Report |
| Auburn Wa Water Quality Report 2026 | View Report |
| Bainbridge Is Wa Water Quality Report 2026 | View Report |
| Bainbridge Is Wa Water Quality Report 2027 | View Report |
| Bainbridge Isl Wa Water Quality Report 2026 | View Report |
| Bainbridge Island Wa Water Quality Report 2026 | View Report |
| Bainbridge Wa Water Quality Report 2026 | View Report |
| Baring Wa Water Quality Report 2026 | View Report |
| Battle Ground Wa Water Quality Report 2026 | View Report |
| Beaux Arts Wa Water Quality Report 2026 | View Report |
| Beaver Wa Water Quality Report 2026 | View Report |
| Belfair Wa Water Quality Report 2026 | View Report |
| Bellevue Wa Water Quality Report 2026 | View Report |
| Bellingham Wa Water Quality Report 2026 | View Report |
| Benge Wa Water Quality Report 2026 | View Report |
| Beverly Wa Water Quality Report 2026 | View Report |
| Bickleton Wa Water Quality Report 2026 | View Report |
| Bingen Wa Water Quality Report 2026 | View Report |
| Birch Bay Wa Water Quality Report 2026 | View Report |
| Black Diamond Wa Water Quality Report 2026 | View Report |
| Blain Wa Water Quality Report 2026 | View Report |
| Blaine Wa Water Quality Report 2026 | View Report |
| Bothell Wa Water Quality Report 2026 | View Report |
| Bow Wa Water Quality Report 2026 | View Report |
| Bremerton Wa Water Quality Report 2026 | View Report |
| Brewster Wa Water Quality Report 2026 | View Report |
| Bridgeport Wa Water Quality Report 2026 | View Report |
| Brinnon Wa Water Quality Report 2026 | View Report |
| Brush Prairie Wa Water Quality Report 2026 | View Report |
| Buckley Wa Water Quality Report 2026 | View Report |
| Bucoda Wa Water Quality Report 2026 | View Report |
| Buena Wa Water Quality Report 2026 | View Report |
| Burbank Wa Water Quality Report 2026 | View Report |
| Burien Wa Water Quality Report 2026 | View Report |
| Burley Wa Water Quality Report 2026 | View Report |
| Burlingame Wa Water Quality Report 2026 | View Report |
| Burlington Wa Water Quality Report 2026 | View Report |
| Burton Wa Water Quality Report 2026 | View Report |
| Camano Is Wa Water Quality Report 2026 | View Report |
| Camano Island Wa Water Quality Report 2026 | View Report |
| Camano Wa Water Quality Report 2026 | View Report |
| Camas Wa Water Quality Report 2026 | View Report |
| Capalis Beach Wa Water Quality Report 2026 | View Report |
| Carbonado Wa Water Quality Report 2026 | View Report |
| Carlsborg Wa Water Quality Report 2026 | View Report |
| Carnation Wa Water Quality Report 2026 | View Report |
| Carson Wa Water Quality Report 2026 | View Report |
| Cashmere Wa Water Quality Report 2026 | View Report |
| Castle Rock Wa Water Quality Report 2026 | View Report |
| Cathlamet Wa Water Quality Report 2026 | View Report |
| Centralia Wa Water Quality Report 2026 | View Report |
| Chattaroy Wa Water Quality Report 2026 | View Report |
| Chehalis Wa Water Quality Report 2026 | View Report |
| Chelan Wa Water Quality Report 2026 | View Report |
| Cheney Wa Water Quality Report 2026 | View Report |
| Chewelah Wa Water Quality Report 2026 | View Report |
| Chimacum Wa Water Quality Report 2026 | View Report |
| Chinook Wa Water Quality Report 2026 | View Report |
| Clallam Bay Wa Water Quality Report 2026 | View Report |
| Clarkston Wa Water Quality Report 2026 | View Report |
| Cle Elum Wa Water Quality Report 2026 | View Report |
| Clinton Wa Water Quality Report 2026 | View Report |
| Colbert Wa Water Quality Report 2026 | View Report |
| Colfax Wa Water Quality Report 2026 | View Report |
| College Place Wa Water Quality Report 2026 | View Report |
| Colton Wa Water Quality Report 2026 | View Report |
| Colville Wa Water Quality Report 2026 | View Report |
| Concrete Wa Water Quality Report 2026 | View Report |
| Connell Wa Water Quality Report 2026 | View Report |
| Copalis Beach Wa Water Quality Report 2026 | View Report |
| Cosmopolis Wa Water Quality Report 2026 | View Report |
| Coulee City Wa Water Quality Report 2026 | View Report |
| Coulee Dam Wa Water Quality Report 2026 | View Report |
| Coupeville Wa Water Quality Report 2026 | View Report |
| Covington Wa Water Quality Report 2026 | View Report |
| Cowiche Wa Water Quality Report 2026 | View Report |
| Curlew Wa Water Quality Report 2026 | View Report |
| Cusick Wa Water Quality Report 2026 | View Report |
| Custer Wa Water Quality Report 2026 | View Report |
| Dallesport Wa Water Quality Report 2026 | View Report |
| Darrington Wa Water Quality Report 2026 | View Report |
| Davenport Wa Water Quality Report 2026 | View Report |
| Dayton Wa Water Quality Report 2026 | View Report |
| Deer Harbor Wa Water Quality Report 2026 | View Report |
| Deer Park Wa Water Quality Report 2026 | View Report |
| Deming Wa Water Quality Report 2026 | View Report |
| Des Moines Wa Water Quality Report 2026 | View Report |
| Desert Aire Wa Water Quality Report 2026 | View Report |
| Dockton Wa Water Quality Report 2026 | View Report |
| Dryden Wa Water Quality Report 2026 | View Report |
| Dupont Wa Water Quality Report 2026 | View Report |
| Duvall Wa Water Quality Report 2026 | View Report |
| East Olympia Wa Water Quality Report 2026 | View Report |
| East Wenatchee Wa Water Quality Report 2026 | View Report |
| East Wentachee Wa Water Quality Report 2026 | View Report |
| Eastsound Wa Water Quality Report 2026 | View Report |
| Eatonville Wa Water Quality Report 2026 | View Report |
| Edgewood Wa Water Quality Report 2026 | View Report |
| Edmonds Wa Water Quality Report 2026 | View Report |
| Edwall Wa Water Quality Report 2026 | View Report |
| Elbe Wa Water Quality Report 2026 | View Report |
| Electric City Wa Water Quality Report 2026 | View Report |
| Elk Wa Water Quality Report 2026 | View Report |
| Ellensburg Wa Water Quality Report 2026 | View Report |
| Elma Wa Water Quality Report 2026 | View Report |
| Elmer City Wa Water Quality Report 2026 | View Report |
| Eltopia Wa Water Quality Report 2026 | View Report |
| Endicott Wa Water Quality Report 2026 | View Report |
| Entiat Wa Water Quality Report 2026 | View Report |
| Enumclaw Wa Water Quality Report 2026 | View Report |
| Ephrata Wa Water Quality Report 2026 | View Report |
| Everett Wa Water Quality Report 2026 | View Report |
| Everson Wa Water Quality Report 2026 | View Report |
| Fairchild Afb Wa Water Quality Report 2026 | View Report |
| Fall City Wa Water Quality Report 2026 | View Report |
| Falls City Wa Water Quality Report 2026 | View Report |
| Farmington Wa Water Quality Report 2026 | View Report |
| Federal Way Wa Water Quality Report 2026 | View Report |
| Ferndale Wa Water Quality Report 2026 | View Report |
| Fife Wa Water Quality Report 2026 | View Report |
| Fircrest Wa Water Quality Report 2026 | View Report |
| Ford Wa Water Quality Report 2026 | View Report |
| Forks Wa Water Quality Report 2026 | View Report |
| Four Lakes Wa Water Quality Report 2026 | View Report |
| Freeland Wa Water Quality Report 2026 | View Report |
| Friday Harbor Wa Water Quality Report 2026 | View Report |
| George Wa Water Quality Report 2026 | View Report |
| Gig Harbor Wa Water Quality Report 2026 | View Report |
| Glacier Wa Water Quality Report 2026 | View Report |
| Glenoma Wa Water Quality Report 2026 | View Report |
| Gold Bar Wa Water Quality Report 2026 | View Report |
| Goldbar Wa Water Quality Report 2026 | View Report |
| Goldendale Wa Water Quality Report 2026 | View Report |
| Graham Wa Water Quality Report 2026 | View Report |
| Grandview Wa Water Quality Report 2026 | View Report |
| Granger Wa Water Quality Report 2026 | View Report |
| Granite Falls Wa Water Quality Report 2026 | View Report |
| Grapeview Wa Water Quality Report 2026 | View Report |
| Grays River Wa Water Quality Report 2026 | View Report |
| Greenacres Wa Water Quality Report 2026 | View Report |
| Greenbank Wa Water Quality Report 2026 | View Report |
| Greenwater Wa Water Quality Report 2026 | View Report |
| Hadlock Wa Water Quality Report 2026 | View Report |
| Hamilton Wa Water Quality Report 2026 | View Report |
| Hansville Wa Water Quality Report 2026 | View Report |
| Harrah Wa Water Quality Report 2026 | View Report |
| Hillsboro Wa Water Quality Report 2026 | View Report |
| Hobart Wa Water Quality Report 2026 | View Report |
| Hood River Wa Water Quality Report 2026 | View Report |
| Hoodsport Wa Water Quality Report 2026 | View Report |
| Hooper Wa Water Quality Report 2026 | View Report |
| Hoquiam Wa Water Quality Report 2026 | View Report |
| Hunters Wa Water Quality Report 2026 | View Report |
| Husum Wa Water Quality Report 2026 | View Report |
| Ilwaco Wa Water Quality Report 2026 | View Report |
| Index Wa Water Quality Report 2026 | View Report |
| Ion Wa Water Quality Report 2026 | View Report |
| Ione Wa Water Quality Report 2026 | View Report |
| Issaquah Wa Water Quality Report 2026 | View Report |
| Issaquall Wa Water Quality Report 2026 | View Report |
| Joint Base Lewis Mcchord Wa Water Quality Report 2026 | View Report |
| Joyce Wa Water Quality Report 2026 | View Report |
| Kahlotus Wa Water Quality Report 2026 | View Report |
| Kalama Wa Water Quality Report 2026 | View Report |
| Kelso Wa Water Quality Report 2026 | View Report |
| Kenmore Wa Water Quality Report 2026 | View Report |
| Kennewick Wa Water Quality Report 2026 | View Report |
| Kent Wa Water Quality Report 2026 | View Report |
| Kettle Falls Wa Water Quality Report 2026 | View Report |
| Kingston Wa Water Quality Report 2026 | View Report |
| Kittitas Wa Water Quality Report 2026 | View Report |
| La Conner Wa Water Quality Report 2026 | View Report |
| La Push Wa Water Quality Report 2026 | View Report |
| Lacey Wa Water Quality Report 2026 | View Report |
| Laconner Wa Water Quality Report 2026 | View Report |
| Lacrosse Wa Water Quality Report 2026 | View Report |
| Lake Forest Park Wa Water Quality Report 2026 | View Report |
| Lake Stevens Wa Water Quality Report 2026 | View Report |
| Lake Tapps Wa Water Quality Report 2026 | View Report |
| Lakebay Wa Water Quality Report 2026 | View Report |
| Lakewood Wa Water Quality Report 2026 | View Report |
| Lamont Wa Water Quality Report 2026 | View Report |
| Langley Wa Water Quality Report 2026 | View Report |
| Leavenworth Wa Water Quality Report 2026 | View Report |
| Lebam Wa Water Quality Report 2026 | View Report |
| Lester Wa Water Quality Report 2026 | View Report |
| Liberty Lake Wa Water Quality Report 2026 | View Report |
| Lilliwaup Wa Water Quality Report 2026 | View Report |
| Lind Wa Water Quality Report 2026 | View Report |
| Littlerock Wa Water Quality Report 2026 | View Report |
| Long Beach Wa Water Quality Report 2026 | View Report |
| Longbranch Wa Water Quality Report 2026 | View Report |
| Longmire Wa Water Quality Report 2026 | View Report |
| Longview Wa Water Quality Report 2026 | View Report |
| Loon Lake Wa Water Quality Report 2026 | View Report |
| Lopez Island Wa Water Quality Report 2026 | View Report |
| Lopez Wa Water Quality Report 2026 | View Report |
| Lummi Island Wa Water Quality Report 2026 | View Report |
| Lynden Wa Water Quality Report 2026 | View Report |
| Lynnwood Wa Water Quality Report 2026 | View Report |
| Mabton Wa Water Quality Report 2026 | View Report |
| Malaga Wa Water Quality Report 2026 | View Report |
| Malott Wa Water Quality Report 2026 | View Report |
| Manchester Wa Water Quality Report 2026 | View Report |
| Manson Wa Water Quality Report 2026 | View Report |
| Maple Falls Wa Water Quality Report 2026 | View Report |
| Maple Valley Wa Water Quality Report 2026 | View Report |
| Marblemount Wa Water Quality Report 2026 | View Report |
| Marlin Wa Water Quality Report 2026 | View Report |
| Marshall Wa Water Quality Report 2026 | View Report |
| Marysville Wa Water Quality Report 2026 | View Report |
| Mattawa Wa Water Quality Report 2026 | View Report |
| Maytown Wa Water Quality Report 2026 | View Report |
| Mazama Wa Water Quality Report 2026 | View Report |
| Mccleary Wa Water Quality Report 2026 | View Report |
| Mckenna Wa Water Quality Report 2026 | View Report |
| Mead Wa Water Quality Report 2026 | View Report |
| Medical Lake Wa Water Quality Report 2026 | View Report |
| Medina Wa Water Quality Report 2026 | View Report |
| Mercer Is Wa Water Quality Report 2026 | View Report |
| Mercer Island Wa Water Quality Report 2026 | View Report |
| Mesa Wa Water Quality Report 2026 | View Report |
| Metaline Wa Water Quality Report 2026 | View Report |
| Methow Wa Water Quality Report 2026 | View Report |
| Mill Creek Wa Water Quality Report 2026 | View Report |
| Milton Wa Water Quality Report 2026 | View Report |
| Mineral Wa Water Quality Report 2026 | View Report |
| Moclips Wa Water Quality Report 2026 | View Report |
| Monitor Wa Water Quality Report 2026 | View Report |
| Monroe Wa Water Quality Report 2026 | View Report |
| Montesano Wa Water Quality Report 2026 | View Report |
| Morton Wa Water Quality Report 2026 | View Report |
| Moses Lake Wa Water Quality Report 2026 | View Report |
| Moses Wa Water Quality Report 2026 | View Report |
| Mossy Rock Wa Water Quality Report 2026 | View Report |
| Mossyrock Wa Water Quality Report 2026 | View Report |
| Mount Vernon Wa Water Quality Report 2026 | View Report |
| Mountlake Terrace Wa Water Quality Report 2026 | View Report |
| Moxee Wa Water Quality Report 2026 | View Report |
| Mt Lake Terrace Wa Water Quality Report 2026 | View Report |
| Mt Vernon Wa Water Quality Report 2026 | View Report |
| Mt Vernon Wa Water Quality Report 2027 | View Report |
| Mukilteo Wa Water Quality Report 2026 | View Report |
| Naches Wa Water Quality Report 2026 | View Report |
| Napavine Wa Water Quality Report 2026 | View Report |
| Nas Whidbey Island Wa Water Quality Report 2026 | View Report |
| Naselle Wa Water Quality Report 2026 | View Report |
| Neah Bay Wa Water Quality Report 2026 | View Report |
| Nespelem Wa Water Quality Report 2026 | View Report |
| Newcastle Wa Water Quality Report 2026 | View Report |
| Newman Lake Wa Water Quality Report 2026 | View Report |
| Newman Lk Wa Water Quality Report 2026 | View Report |
| Newport Wa Water Quality Report 2026 | View Report |
| Nine Mile Falls Wa Water Quality Report 2026 | View Report |
| Nooksack Wa Water Quality Report 2026 | View Report |
| North Bend Wa Water Quality Report 2026 | View Report |
| North Bonneville Wa Water Quality Report 2026 | View Report |
| Northport Wa Water Quality Report 2026 | View Report |
| Oak Harbor Wa Water Quality Report 2026 | View Report |
| Oakville Wa Water Quality Report 2026 | View Report |
| Ocean City Wa Water Quality Report 2026 | View Report |
| Ocean Park Wa Water Quality Report 2026 | View Report |
| Odessa Wa Water Quality Report 2026 | View Report |
| Okanogan Wa Water Quality Report 2026 | View Report |
| Olalla Wa Water Quality Report 2026 | View Report |
| Olympia Wa Water Quality Report 2026 | View Report |
| Omak Wa Water Quality Report 2026 | View Report |
| Onalaska Wa Water Quality Report 2026 | View Report |
| Orcas Island Wa Water Quality Report 2026 | View Report |
| Oregon City Wa Water Quality Report 2026 | View Report |
| Orondo Wa Water Quality Report 2026 | View Report |
| Oroville Wa Water Quality Report 2026 | View Report |
| Orting Wa Water Quality Report 2026 | View Report |
| Othello Wa Water Quality Report 2026 | View Report |
| Otis Orchard Wa Water Quality Report 2026 | View Report |
| Oysterville Wa Water Quality Report 2026 | View Report |
| Pacific Beach Wa Water Quality Report 2026 | View Report |
| Pacific Wa Water Quality Report 2026 | View Report |
| Packwood Wa Water Quality Report 2026 | View Report |
| Palmer Wa Water Quality Report 2026 | View Report |
| Palouse Wa Water Quality Report 2026 | View Report |
| Pasco Wa Water Quality Report 2026 | View Report |
| Pateros Wa Water Quality Report 2026 | View Report |
| Paterson Wa Water Quality Report 2026 | View Report |
| Pe Ell Wa Water Quality Report 2026 | View Report |
| Peshastin Wa Water Quality Report 2026 | View Report |
| Point Roberts Wa Water Quality Report 2026 | View Report |
| Polusbo Wa Water Quality Report 2026 | View Report |
| Pomeroy Wa Water Quality Report 2026 | View Report |
| Port Angeles Wa Water Quality Report 2026 | View Report |
| Port Gamble Wa Water Quality Report 2026 | View Report |
| Port Hadlock Wa Water Quality Report 2026 | View Report |
| Port Ludlow Wa Water Quality Report 2026 | View Report |
| Port Orchard Wa Water Quality Report 2026 | View Report |
| Port Townsend Wa Water Quality Report 2026 | View Report |
| Portland Wa Water Quality Report 2026 | View Report |
| Poulsbo Wa Water Quality Report 2026 | View Report |
| Pouslbo Wa Water Quality Report 2026 | View Report |
| Prosser Wa Water Quality Report 2026 | View Report |
| Pt Angeles Wa Water Quality Report 2026 | View Report |
| Pt Orchard Wa Water Quality Report 2026 | View Report |
| Pullman Wa Water Quality Report 2026 | View Report |
| Puyallup Wa Water Quality Report 2026 | View Report |
| Quilcene Wa Water Quality Report 2026 | View Report |
| Quilicene Wa Water Quality Report 2026 | View Report |
| Quinault Wa Water Quality Report 2026 | View Report |
| Quincy Wa Water Quality Report 2026 | View Report |
| Rainier Wa Water Quality Report 2026 | View Report |
| Randle Wa Water Quality Report 2026 | View Report |
| Ravensdale Wa Water Quality Report 2026 | View Report |
| Raymond Wa Water Quality Report 2026 | View Report |
| Reardan Wa Water Quality Report 2026 | View Report |
| Redmond Wa Water Quality Report 2026 | View Report |
| Redondo Wa Water Quality Report 2026 | View Report |
| Renton Wa Water Quality Report 2026 | View Report |
| Republic Wa Water Quality Report 2026 | View Report |
| Retsil Wa Water Quality Report 2026 | View Report |
| Richland Wa Water Quality Report 2026 | View Report |
| Ridgefield Wa Water Quality Report 2026 | View Report |
| Ritzville Wa Water Quality Report 2026 | View Report |
| Riverside Wa Water Quality Report 2026 | View Report |
| Rochester Wa Water Quality Report 2026 | View Report |
| Rock Island Wa Water Quality Report 2026 | View Report |
| Rockford Wa Water Quality Report 2026 | View Report |
| Rockport Wa Water Quality Report 2026 | View Report |
| Rolling Bay Wa Water Quality Report 2026 | View Report |
| Rolling Hills Wa Water Quality Report 2026 | View Report |
| Ronald Wa Water Quality Report 2026 | View Report |
| Rosalia Wa Water Quality Report 2026 | View Report |
| Roslyn Wa Water Quality Report 2026 | View Report |
| Roy Wa Water Quality Report 2026 | View Report |
| Royal City Wa Water Quality Report 2026 | View Report |
| Salkum Wa Water Quality Report 2026 | View Report |
| Sammamish Wa Water Quality Report 2026 | View Report |
| Santa Rosa Wa Water Quality Report 2026 | View Report |
| Satsop Wa Water Quality Report 2026 | View Report |
| Seabeck Wa Water Quality Report 2026 | View Report |
| Seahurst Wa Water Quality Report 2026 | View Report |
| Seattle Wa Water Quality Report 2026 | View Report |
| Sedro Woolley Wa Water Quality Report 2026 | View Report |
| Sekiu Wa Water Quality Report 2026 | View Report |
| Selah Wa Water Quality Report 2026 | View Report |
| Sequim Wa Water Quality Report 2026 | View Report |
| Shelton Wa Water Quality Report 2026 | View Report |
| Shoreline Wa Water Quality Report 2026 | View Report |
| Silver Creek Wa Water Quality Report 2026 | View Report |
| Silverdale Wa Water Quality Report 2026 | View Report |
| Skamania Wa Water Quality Report 2026 | View Report |
| Skamokawa Wa Water Quality Report 2026 | View Report |
| Skykomish Wa Water Quality Report 2026 | View Report |
| Snoqualime Wa Water Quality Report 2026 | View Report |
| Snoqualmie Pass Wa Water Quality Report 2026 | View Report |
| Snoqualmie Wa Water Quality Report 2026 | View Report |
| Soap Lake Wa Water Quality Report 2026 | View Report |
| South Bend Wa Water Quality Report 2026 | View Report |
| South Cle Elum Wa Water Quality Report 2026 | View Report |
| South Prairie Wa Water Quality Report 2026 | View Report |
| Spanaway Wa Water Quality Report 2026 | View Report |
| Spangle Wa Water Quality Report 2026 | View Report |
| Spokane Valley Wa Water Quality Report 2026 | View Report |
| Spokane Wa Water Quality Report 2026 | View Report |
| Sprague Wa Water Quality Report 2026 | View Report |
| Springdale Wa Water Quality Report 2026 | View Report |
| St John Wa Water Quality Report 2026 | View Report |
| Stanwood Wa Water Quality Report 2026 | View Report |
| Starbuck Wa Water Quality Report 2026 | View Report |
| Startup Wa Water Quality Report 2026 | View Report |
| Steptoe Wa Water Quality Report 2026 | View Report |
| Stevenson Wa Water Quality Report 2026 | View Report |
| Sultan Wa Water Quality Report 2026 | View Report |
| Sumas Wa Water Quality Report 2026 | View Report |
| Sumner Wa Water Quality Report 2026 | View Report |
| Sun Valley Wa Water Quality Report 2026 | View Report |
| Sunnyside Wa Water Quality Report 2026 | View Report |
| Suquamish Wa Water Quality Report 2026 | View Report |
| Tacoma Wa Water Quality Report 2026 | View Report |
| Taholah Wa Water Quality Report 2026 | View Report |
| Tahuya Wa Water Quality Report 2026 | View Report |
| Tekoa Wa Water Quality Report 2026 | View Report |
| Tenino Wa Water Quality Report 2026 | View Report |
| Thorp Wa Water Quality Report 2026 | View Report |
| Thurston Wa Water Quality Report 2026 | View Report |
| Tokeland Wa Water Quality Report 2026 | View Report |
| Toledo Wa Water Quality Report 2026 | View Report |
| Tonasket Wa Water Quality Report 2026 | View Report |
| Toppenish Wa Water Quality Report 2026 | View Report |
| Tri Cities Wa Water Quality Report 2026 | View Report |
| Trout Lake Wa Water Quality Report 2026 | View Report |
| Tukwila Wa Water Quality Report 2026 | View Report |
| Tumwater Wa Water Quality Report 2026 | View Report |
| Twisp Wa Water Quality Report 2026 | View Report |
| Union Gap Wa Water Quality Report 2026 | View Report |
| Union Wa Water Quality Report 2026 | View Report |
| Uniontown Wa Water Quality Report 2026 | View Report |
| University Place Wa Water Quality Report 2026 | View Report |
| Usk Wa Water Quality Report 2026 | View Report |
| Valley Wa Water Quality Report 2026 | View Report |
| Vancouver Wa Water Quality Report 2026 | View Report |
| Vantage Wa Water Quality Report 2026 | View Report |
| Vashion Island Wa Water Quality Report 2026 | View Report |
| Vashon Wa Water Quality Report 2026 | View Report |
| Vashon_Island Wa Water Quality Report 2026 | View Report |
| W Richland Wa Water Quality Report 2026 | View Report |
| Waitsburg Wa Water Quality Report 2026 | View Report |
| Walla Walla Wa Water Quality Report 2026 | View Report |
| Wapato Wa Water Quality Report 2026 | View Report |
| Warden Wa Water Quality Report 2026 | View Report |
| Washougal Wa Water Quality Report 2026 | View Report |
| Washtucna Wa Water Quality Report 2026 | View Report |
| Waterville Wa Water Quality Report 2026 | View Report |
| Wauna Wa Water Quality Report 2026 | View Report |
| Waverly Wa Water Quality Report 2026 | View Report |
| Wellpinit Wa Water Quality Report 2026 | View Report |
| Wenatchee Wa Water Quality Report 2026 | View Report |
| Wentachee Wa Water Quality Report 2026 | View Report |
| West Richland Wa Water Quality Report 2026 | View Report |
| Westport Wa Water Quality Report 2026 | View Report |
| White Salmon Wa Water Quality Report 2026 | View Report |
| Wilbur Wa Water Quality Report 2026 | View Report |
| Wilkeson Wa Water Quality Report 2026 | View Report |
| Willard Wa Water Quality Report 2026 | View Report |
| Winlock Wa Water Quality Report 2026 | View Report |
| Winthrop Wa Water Quality Report 2026 | View Report |
| Woodinville Wa Water Quality Report 2026 | View Report |
| Woodland Wa Water Quality Report 2026 | View Report |
| Yacolt Wa Water Quality Report 2026 | View Report |
| Yakima Wa Water Quality Report 2026 | View Report |
| Yarrow Point Wa Water Quality Report 2026 | View Report |
| Yelm Wa Water Quality Report 2026 | View Report |
| Zillah Wa Water Quality Report 2026 | View Report |
What Does This Mean For You?
Detecting Nitrates in your water supply does not necessarily mean immediate danger, but long-term exposure -- even at low levels -- carries measurable health risk. Reverse osmosis is the most effective method for removing nitrates from drinking water.
Our recommendation: View Nitrates filters certified for Washington water conditions or take our free Water Finder Quiz to get a personalized recommendation.
Filter Nitrates From Your Washington Tap Water
PureWaterGuys carries NSF-certified filters proven to reduce Nitrates and other contaminants found in Washington water.
Shop Nitrates Filters Take the Water QuizFrequently Asked Questions
What is Nitrates?
High nitrate levels cause methemoglobinemia (blue baby syndrome) in infants. EPA MCL is 10 mg/L.
Is Washington tap water safe to drink?
Water quality varies by city. Of the Washington systems we analyzed, 449 detected Nitrates. Most levels are below EPA action thresholds, but long-term low-level exposure carries health risk. Check your city's report above or use a certified home filter as a precaution.
What filter removes Nitrates from tap water?
Reverse osmosis is the most effective method for removing nitrates from drinking water. See our Nitrates filter options.
Data sourced from EPA-mandated annual water quality reports (Consumer Confidence Reports). Last updated: 2026. Not all systems are required to test for every contaminant.