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EWG's Tap Water Database — 2019 UPDATE

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Washington

  • 2,204 Utilities

  • Serving: 6,042,000

  • Data available: 2012-2017

  • Contaminants Found: 101

 

EWG's drinking water quality report for Washington shows results of tests conducted by the water utilities in Washington and provided to EWG by the Washington State Department of Health.

LARGE UTILITIES
ALL UTILITIES WITH VIOLATIONS
LARGE UTILITIES WITH VIOLATIONS

Below are utilities in Washington serving over 10,000 people, listed alphabetically. Click the "more" button below to get the full list of utilities serving over 10,000 people.

Large utilities in Washington

UtilityLocationPeople
Served
Alderwood Water DistrictLynnwood, WA171,500
Arlington Water DepartmentArlington, WA14,598
Battle Ground Water DepartmentBattle Ground, WA16,710
Bonney Lake Water DepartmentBonney Lake, WA35,123
Camas Municipal Water Sewer SystemCamas, WA23,020
Cedar River Water & Sewer DistrictMaple Valley, WA24,875
Centralia UtilitiesCentralia, WA15,751
Chelan County PUD 1Wenatchee, WA13,170
City of AberdeenAberdeen, WA16,920
City of AnacortesMount Vernon, WA15,734
City of AuburnAuburn, WA55,258
City of BellevueBellevue, WA142,900
City of Bellingham Water DivisionBellingham, WA90,000
City of Bothell WaterBothell, WA15,268
City of BremertonBremerton, WA53,507
City of EdmondsEdmonds, WA32,381
City of Everett Public Works DepartmentEverett, WA103,000
City of GrandviewGrandview, WA10,922
City of KelsoKelso, WA12,288
City of KennewickKennewick, WA77,347
City of KirklandKirkland, WA40,648
City of LynnwoodLynnwood, WA34,224
City of Mercer IslandMercer Island, WA22,720
City of Moses LakeMoses Lake, WA22,930
City of Mountlake TerraceMountlake Terrace, WA20,090
City of Oak HarborOak Harbor, WA18,716
City of OlympiaOlympia, WA59,550
City of Port AngelesPort Angeles, WA19,038
City of Pullman Water DepartmentPullman, WA25,591
City of PuyallupPuyallup, WA34,030
More

Utilities that accumulated/accrued the most violation points as of April 2016 to March 2019 in Washington

The Environmental Protection Agency's Enforcement and Compliance History Online (ECHO) database collects compliance and enforcement-related information for drinking water utilities nationwide. ECHO water quality violation scores take into account federal health-based water quality standards, as well as monitoring, reporting and other drinking water quality requirements. Points are accrued based on specific problems at the utility - violations of health-based drinking water standards receive more points than monitoring and reporting violations - and the length of time until the violations were corrected.

UtilityLocationPeople
Served
Violation
Points
Sunrise Estates Water SystemOthello, WA28165
Coxville Water Association #1Benton City, WA52137
Eastlake Water AssociationOroville, WA35100
Orient Water CompanyTonasket, WA10075
Kontree Apartments Water SystemLynden, WA6060
Plymouth Water DistrictPasco, WA22254
Bc Water Co.Kennewick, WA66250
Sundance Improvement AssociationKennewick, WA10048
Golden Valley Water AssociationQuincy, WA12841
Red Gate Mobile Home ParkShelton, WA2337
Cusick, Town OfCusick, WA42036
Beverly Water DistrictMoses Lake, WA12034
Creston Public WaterCreston, WA27533
Connell, City ofConnell, WA5,15031
Woodland, City OfWoodland, WA5,31528
Woodglen Prd Water SystemFreeland, WA4023
Hannah Heights Owners AssociationFriday Harbor, WA5022
Stone Creek Estates Water AssociationMaple Valley, WA6222
Sagedale ApartmentsGrants Pass, WA4021
Surfside HomeownersOcean Park, WA1,40521
Rathbone Park Water AssocFerndale, WA24021
Mount Baker Water AssociationBellingham, WA50021
SummerlandOak Harbor, WA8520
Hartstene PointeShelton, WA30620
Neilton Meadowland WD 8 ANeilton, WA22219
Boston HarborOlympia, WA88017
Panorama Mobile Home ParkColville, WA13017
Hillcrest ManorVancouver, WA10016
Sky Meadows Ranch Country Club WaterKent, WA6016
Issaquah Valley Water Association #1Issaquah, WA5816

Large utilities that accumulated/accrued the most violation points as of April 2016 to March 2019 in Washington

The Environmental Protection Agency's Enforcement and Compliance History Online (ECHO) database collects compliance and enforcement-related information for drinking water utilities nationwide. ECHO water quality violation scores take into account federal health-based water quality standards, as well as monitoring, reporting and other drinking water quality requirements. Points are accrued based on specific problems at the utility - violations of health-based drinking water standards receive more points than monitoring and reporting violations - and the length of time until the violations were corrected.

UtilityLocationPeople
Served
Violation
Points
Spokane County Water District 3, Sys 2Spokane, WA11,5559
Southwood Water SystemTacoma, WA35,2008
Bonney Lake Water DepartmentBonney Lake, WA35,1235
Chelan County PUD 1Wenatchee, WA13,1704
Pasco Water DepartmentPasco, WA68,6484
City of SunnysideSunnyside, WA15,8584
Coal Creek Utility DistrictNewcastle, WA11,8334
Mukilteo Water & Wastewater DistrictMukilteo, WA24,5753
Fruitland Mutual Water CompanyPuyallup, WA11,1693
King County Water District #49Burien, WA15,9873
City of VancouverVancouver, WA231,0002
City of TacomaTacoma, WA315,7772
Woodinville Water DistrictWoodinville, WA48,4002
Cross Valley Water DistrictSnohomish, WA17,2802
Monroe Water SystemMonroe, WA18,5131
City of Yakima Water DivisionYakima, WA65,2381
West Sound Utility District #1Port Orchard, WA18,7901
City of WashougalWashougal, WA14,7501
PUD #1 of Asotin CountyClarkston, WA19,2641
King County Water District #125Seattle, WA14,7601
Longview Water DepartmentLongview, WA40,8781
King County Water District 111Kent, WA20,0001
Silverdale Water District 16Silverdale, WA20,6651
City of Redmond Water SystemRedmond, WA60,6501
Camas Municipal Water Sewer SystemCamas, WA23,0201
Skagit County Public Utility District 1 Judy ReservoirMt Vernon, WA65,1181
Olympic View Water & Sewer DistrictEdmonds, WA12,9381

Contaminants found in Washington above health guidelines

Found above health guidelinesFound
Contaminant# of UtilitiesPeople Served# of UtilitiesPeople Served

Total trihalomethanes (TTHMs)
1,0165,589,9141,0295,627,773

Bromodichloromethane
8395,475,4948415,486,293

Chromium (hexavalent)
2045,068,8102055,093,179

Haloacetic acids (HAA5)
6544,834,9076534,834,853

Chloroform
7094,825,8578815,521,647

Trichloroacetic acid
4514,352,8634504,352,809

Dichloroacetic acid
5024,317,5285114,664,353

Nitrate
1,3864,028,8111,5855,412,754

Dibromochloromethane
7383,541,7547684,599,337

Arsenic
7953,131,0497953,131,049

Bromochloroacetic acid
3032,892,1063022,892,052

Nitrate and nitrite
7032,816,9627492,987,777

Radium, combined (-226 & -228)
6421,309,8326641,457,596

Dibromoacetic acid
2941,020,0293001,964,291

Bromoform
337537,1674842,547,734

Radon
4239,6204239,620

Thallium
77209,15384215,272

Manganese
155127,1927842,775,828

Chlorate
596,3491574,227,554

Tetrachloroethylene (perchloroethylene)
1081,9851081,985

Perfluorooctanoic acid (PFOA)
360,471360,471

Perfluorohexane sulfonate (PFHXS)
122,926122,926

Perfluorobutane sulfonate (PFBS)
122,926122,926

Perfluorooctane sulfonate (PFOS)
122,926122,926

Perfluorononanoic acid (PFNA)
122,926122,926

Perfluoroheptanoic acid (PFHPA)
122,926252,041

Uranium
1210,6441611,746

Trichloroethylene
74,92323505,736

Ethylene dibromide
12,69512,695

Cadmium
62,31762,317

Dichloromethane (methylene chloride)
11,8001551,316

1,2-Dichloropropane
11,16522,665

Carbon tetrachloride
41,13551,175

Antimony
325729117,134

Chloromethane
120047196,858

Vanadium
1901974,931,990

Benzene
154280

Vinyl chloride
154154

Styrene
12622,766

Contaminants found in Washington above legal limits