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EWG's Tap Water Database

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Washington

  • 2,223 Utilities

  • Serving: 6,047,000

  • Data available: 2010-2015

  • 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 October 2014 to September 2017 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
Walla Walla Water DivisionWalla Walla, WA34,858230
Sunrise Estates Water SystemOthello, WA28170
Coxville Water Association #1Benton City, WA5281
Meadowbrook Water AssociationLynden, WA44062
Columbia Crest EstatesNapavine, WA5555
Bc Water Co.Kennewick, WA66240
Lynden Water DepartmentLynden, WA12,73030
Marion Water Co. Inc.Buckley, WA71630
Sagedale ApartmentsGrants Pass, WA4025
Panorama Mobile Home ParkColville, WA13021
Sundance Improvement AssociationKennewick, WA10021
Kontree Apartments Water SystemLynden, WA6020
Calmor Cove ClubBellingham, WA1720
Orient Water CompanyTonasket, WA10020
Delta Water AssociationLynden, WA42020
City of TacomaTacoma, WA315,77716
Jefferson County Water District #1Port Ludlow, WA28015
Stevens Co. PUD - Mission Ridge Water SystemLoon Lake, WA9910
Hartstene PointeShelton, WA30610
Eastlake Water AssociationOroville, WA3510
Mini-pearl Water SystemBurbank, WA2810
Plymouth Water DistrictPasco, WA22210
Alta Lake Golf Course PlatPateros, WA897
Scootenay Water Association Inc.Connell, WA1207
Many Lakes Mobile Home ParkTonasket, WA376
Airway Express Inn Inc.Spokane, WA456
Creston Public WaterCreston, WA2756
Grand Coulee Water Dept, City OfGrand Coulee, WA9266
Lewis Co. Water District #2Onalaska, WA6006
SmithvilleForks, WA286

Large utilities that accumulated/accrued the most violation points as of October 2014 to September 2017 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
Walla Walla Water DivisionWalla Walla, WA34,858230
Lynden Water DepartmentLynden, WA12,73030
City of TacomaTacoma, WA315,77716
Sammamish Plateau Water and SewerSammamish, WA54,4682
City of GrandviewGrandview, WA10,9221
Longview Water DepartmentLongview, WA40,8781
Vera Water & PowerVeradale, WA24,6921
Modern Electric Water CompanySpokane, WA18,5601
Clark Public UtilitiesVancouver, WA82,0711
City of Moses LakeMoses Lake, WA22,9301
City of SunnysideSunnyside, WA15,8581
Pasco Water DepartmentPasco, WA68,6481

Contaminants found in Washington above health guidelines

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

Total trihalomethanes (TTHMs)
6385,450,7736925,582,215

Bromodichloromethane
5395,193,3445815,344,988

Chromium (hexavalent)
2555,185,8082585,213,152

Chloroform
4364,573,9115895,376,915

Trichloroacetic acid
3274,113,9293364,241,289

Dichloroacetic acid
3334,034,5113594,512,534

Arsenic
4322,310,7374322,310,737

Dibromochloromethane
3382,027,1794864,474,372

Radium-228
3631,042,6403651,042,797

Radon
10284,98710284,987

Thallium
6105,9038108,229

Chlorate
596,4312014,312,815

Strontium-90
377,714377,714

Tetrachloroethylene (perchloroethylene)
675,018675,018

Manganese
9866,6234382,702,822

Perfluorooctanoic acid (PFOA)
360,471360,471

Nitrate
9552,2261,4135,219,874

Bromoform
5644,5172942,209,681

Nitrate and nitrite
2039,5233512,142,546

Perfluorononanoic acid (PFNA)
122,926122,926

Perfluoroheptanoic acid (PFHPA)
122,926252,041

Perfluorohexane sulfonate (PFHXS)
122,926122,926

Perfluorooctane sulfonate (PFOS)
122,926122,926

Radium-226
1815,6872053,232

Trichloroethylene
33,87022558,515

Uranium
73,08294,095

1,2-Dichloropropane
11,16511,165

Cadmium
23152315

Vanadium
1902485,041,483

Chloromethane
15328156,251

Antimony
14052,506

Contaminants found in Washington above legal limits