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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: 99

 

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 January to March 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, WA34,858191
Sunrise Estates Water SystemOthello, WA28170
Coxville Water Association #1Benton City, WA5270
Calmor Cove ClubBellingham, WA1750
Bc Water Co.Kennewick, WA66250
Marion Water Co. Inc.Buckley, WA71642
Kontree Apartments Water SystemLynden, WA6030
Columbia Crest EstatesNapavine, WA5530
Eastlake Water AssociationOroville, WA3520
Orient Water CompanyTonasket, WA10011
Brutus Water SystemOak Harbor, WA4511
White Salmon, City OfWhite Salmon, WA3,93010
Lake Alyson Water SystemArlington, WA46310
Queen Ann WaterworksBelfair, WA2810
Valley Of The Horses Water District #12Cheney, WA5910
Nine Canyon RanchPasco, WA4910
Jblm Mcchord FieldJoint Base Lewis-mccord, WA3,59810
Sagedale ApartmentsGrants Pass, WA409
JBLM LewisJoint Base Lewis-mccord, WA29,1158
Pilchuck Riviera #2Snohomish, WA1078
Meadowbrook Water AssociationLynden, WA4407
Alta Lake Golf Course PlatPateros, WA897
San Juan VistaSekiu, WA647
Washtucna Water DepartmentWashtucna, WA2507
City of AuburnAuburn, WA55,2587
Canyon Village Water System Inc.Pasco, WA3107
Many Lakes Mobile Home ParkTonasket, WA377
Island Park Mobile Home ParkFreeland, WA606
Paterson Heights Water AssociationPaterson, WA656
SmithvilleForks, WA286

Large utilities that accumulated/accrued the most violation points as of January to March 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, WA34,858191
JBLM LewisJoint Base Lewis-mccord, WA29,1158
City of AuburnAuburn, WA55,2587
City of Pullman Water DepartmentPullman, WA25,5915
Bonney Lake Water DepartmentBonney Lake, WA35,1235
Lakehaven Utility DistrictFederal Way, WA112,0004
City of TacomaTacoma, WA315,7774
Pasco Water DepartmentPasco, WA68,6483
North PeninsulaPoulsbo, WA12,4372
Sammamish Plateau Water and SewerSammamish, WA54,4682
City of VancouverVancouver, WA231,0002
Southwood Water SystemTacoma, WA35,2002
City of Moses LakeMoses Lake, WA22,9301
Modern Electric Water CompanySpokane, WA18,5601
Enumclaw Water DepartmentEnumclaw, WA15,2831
Clark Public UtilitiesVancouver, WA82,0711
Vera Water & PowerVeradale, WA24,6921
King County Water District No 90Renton, WA19,0001
City of SunnysideSunnyside, WA15,8581

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
4332,359,1374332,359,137

Dibromochloromethane
3382,027,1794864,474,372

Radium-228
3641,091,0403661,091,197

Radon
10284,98710284,987

Tetrachloroethylene (perchloroethylene)
7123,4187123,418

Thallium
6105,9038108,229

Chlorate
596,4312014,312,815

Strontium-90
377,714377,714

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
2039,5233522,190,946

Perfluorooctane sulfonate (PFOS)
122,926122,926

Perfluorohexane sulfonate (PFHXS)
122,926122,926

Perfluoroheptanoic acid (PFHPA)
122,926252,041

Perfluorononanoic acid (PFNA)
122,926122,926

Radium-226
1815,6872053,232

Uranium
73,08294,095

1,2-Dichloropropane
11,16511,165

Trichloroethylene
197324587,645

Cadmium
23152315

Vanadium
1902485,041,483

Chloromethane
15328156,251

Antimony
14052,506

Contaminants found in Washington above legal limits

Contaminant# of UtilitiesPeople Served

Arsenic
227,587

Nitrate and nitrite
35,894

Total trihalomethanes (TTHMs)
113,159

Nitrate
61,261

Haloacetic acids (HAA5)
3637

Uranium
148