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EWG's Tap Water Database — 2019 UPDATE

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1,1-Dichloroethylene

Status: National drinking water standard exists

 

1,1-Dichloroethylene is used for plastics production. It damages DNA and causes cancer in laboratory animal studies.

2015-2017:

FOUND

31

states detected

174

utilities detected

8.8 million

people served

Health concerns for 1,1-dichloroethylene

Harm to the central nervous system

Change in body weight

Change to the liver

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 7 ppb

The legal limit for 1,1-dichloroethylene, established in 1987, was based on a toxicity study conducted in laboratory animals in the 1980s.

ppb = parts per billion

States reporting 1,1-dichloroethylene in drinking water

UTILITIES WITH CONTAMINATION
State UtilitiesPeople Served
California483,878,130
New York181,634,218
Florida20727,824
Arizona2675,732
New Jersey7355,529
Nevada4329,122
Alabama3252,123
Idaho2223,424
Pennsylvania22147,793
Tennessee195,501
Georgia391,982
Connecticut388,395
Oklahoma378,234
Arkansas270,425
Colorado151,465
Massachusetts343,874
Nebraska425,724
North Carolina920,638
Wisconsin214,206
Minnesota18,226
Missouri17,300
Maryland16,750
Ohio16,400
South Carolina13,669
Texas32,419
Virginia11,975
Illinois1970
Louisiana2692
New Hampshire2627
Alaska1351
Washington2242
MORE
LESS

Filtering technologies that reduce 1,1-dichloroethylene

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Activated Carbon

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Reverse Osmosis

Utilities with the highest amounts of 1,1-dichloroethylene, 2015-2017

ALL UTILITIES
LARGE UTILITIES
UtilityLocationTestsAverage levelPeople served
Page Avenue Mutual Water CompanyFullerton, CA28 of 284.93 ppb115
City of Broussard Highway 90 Water SystemBroussard, LA46 of 704.23 ppb342
City of IdalouIdalou, TX17 of 273.84 ppb2,308
Bets Water SystemOak Harbor, WA3 of 33.10 ppb50
Yadkinville, Town ofYadkinville, NC12 of 153.06 ppb4,178
Ashwood ApartmentsChester Springs, PA6 of 72.46 ppb75
Mountain View Mobile Estates LLCNewport Beach, CA26 of 512.28 ppb250
Upper Hanover Water Authority*East Greenville, PA4 of 111.82 ppb4,600
Grafton WaterworksGrafton, WI20 of 721.76 ppb11,745
City Of Industry Waterworks Systems*La Puente, CA50 of 501.68 ppb7,000
Christian Life CenterLubbock, TX4 of 51.45 ppb27
California Domestic Water Company*Whittier, CA126 of 2821.22 ppb1,200
Higuera ApartmentsSan Luis Obispo, CA1 of 11.20 ppb30
Commerce-city, Water DepartmentSan Jose, CA76 of 1541.19 ppb3,828
Pineview S/dGastonia, NC2 of 31.17 ppb58
Umh Valley View Danboro Mobile Home ParkDoylestown, PA3 of 31.13 ppb920
N Walpole Village District/lowBellows Falls, NH19 of 241.13 ppb600
Yak Co. - CrewportYakima, WA3 of 31.07 ppb192
Queen of ApostlesMonroe, NY2 of 41.05 ppb45
Montmorenci Water DistrictAiken, SC12 of 120.979 ppb3,669
Swan Lake ResortNew River, NJ9 of 110.910 ppb70
River Run S/dStokesdale, NC3 of 60.893 ppb244
California Water Service Company Oak HillsSan Jose, CA9 of 210.841 ppb3,904
Jefferson County Public Water Supply District 6House Springs, MO5 of 150.833 ppb7,300
Jurupa Community Services District*Jurupa Valley, CA42 of 910.817 ppb106,907
Doylestown Borough Water Department*Doylestown, PA4 of 150.800 ppb8,700
Wasco St. Prison Reception CenterWasco, CA19 of 220.722 ppb5,155
City of TaneytownTaneytown, MD4 of 130.692 ppb6,750
Autumn Shadows Mobile Home ParkBellaire, TX4 of 40.600 ppb84
E Greenville Borough Water DepartmentEast Greenville, PA3 of 60.600 ppb3,100
Franklin Square WDFranklin Square, NY21 of 700.559 ppb20,000
Pomona Water DepartmentPomona, CA199 of 4970.551 ppb151,713
Cleveland WaterworksCleveland, GA3 of 40.538 ppb4,906
Acton Water Supply DistrictActon, MA7 of 510.468 ppb21,408
Truluck-oak Park SubdivisionCordele, GA5 of 60.453 ppb47
South Huntington Water DepartmentSouth Huntington, NY1 of 10.450 ppb81,760
Westbury WDWestbury, NY72 of 1750.375 ppb20,500
Maxies Mobile Valley Water SystemBroussard, LA2 of 40.350 ppb350
Garland WoodsPelham, NH1 of 40.350 ppb27
California Water Service Company - East Los AngelesSan Jose, CA58 of 2310.347 ppb150,446
Cerritos - City, Water DepartmentCerritos, CA8 of 190.324 ppb49,041
Too'gha Inc. - In TananaTanana, AK2 of 50.322 ppb351
Schwenksville Borough AuthoritySchwenksville, PA3 of 140.314 ppb5,200
Caln Mobile Home ParkMorgantown, PA1 of 30.300 ppb30
Coraopolis Water & Sewer Authority*Coraopolis, PA2 of 50.300 ppb5,804
Perkasie Regional AuthorityPerkasie, PA10 of 320.256 ppb11,100
Topaz Lake Water Company Inc.Gardnerville, NV3 of 90.254 ppb40
Charlotte Courthouse, Town ofCharlotte Courthouse, VA1 of 40.250 ppb1,975
Oakdale S/dCharlotte, NC8 of 240.233 ppb119
Middlesex Water SystemMiddlesex, NC4 of 120.217 ppb850

* This water utility supplies finished drinking water to at least one other water utility. The purchasing utility is not required to test for or report 1,1-Dichloroethylene, but it likely has the contaminant in its water supply.

UtilityLocationTestsAverage levelPeople served
Grafton WaterworksGrafton, WI20 of 721.76 ppb11,745
Jurupa Community Services District*Jurupa Valley, CA42 of 910.817 ppb106,907
Franklin Square WDFranklin Square, NY21 of 700.559 ppb20,000
Pomona Water DepartmentPomona, CA199 of 4970.551 ppb151,713
Acton Water Supply DistrictActon, MA7 of 510.468 ppb21,408
South Huntington Water DepartmentSouth Huntington, NY1 of 10.450 ppb81,760
Westbury WDWestbury, NY72 of 1750.375 ppb20,500
California Water Service Company - East Los AngelesSan Jose, CA58 of 2310.347 ppb150,446
Cerritos - City, Water DepartmentCerritos, CA8 of 190.324 ppb49,041
Perkasie Regional AuthorityPerkasie, PA10 of 320.256 ppb11,100
Camrosa Water DistrictCamarillo, CA2 of 60.217 ppb30,000
Moorestown Water DepartmentMoorestown, NJ10 of 160.214 ppb20,700
Liberty Utilities - Bellflower - NorwalkDowney, CA5 of 160.214 ppb72,884
Warminster Municipal Authority*Warminster, PA1 of 310.210 ppb40,000
City of PortervillePorterville, CA17 of 600.203 ppb55,107
Garfield Water DepartmentGarfield, NJ11 of 420.197 ppb30,487
South Gate Water DepartmentSouth Gate, CA8 of 260.175 ppb96,057
La Verne WDLa Verne, CA8 of 370.162 ppb32,230
Golden State Water Company (GSWC) - ClaremontSan Dimas, CA17 of 1310.157 ppb37,160
Grafton Water District*Grafton, MA4 of 280.151 ppb10,703
Manchester Water Department*Manchester, CT7 of 490.137 ppb51,066
Auburn Water DistrictAuburn, MA5 of 280.133 ppb11,763
City of Chino Hills*Chino Hills, CA1 of 60.122 ppb75,655
City of AnaheimAnaheim, CA15 of 1670.0934 ppb450,000
Golden State Water Company (GSWC) - ArtesiaRancho Cordova, CA2 of 170.0782 ppb47,978
City of Loma LindaLoma Linda, CA1 of 100.0750 ppb23,261
Riviera Beach Utility District*Riviera Beach, FL4 of 440.0727 ppb31,500
Jonesboro Water System*Jonesboro, AR2 of 190.0658 ppb70,066
Ambler Boro Water DeptAmbler, PA7 of 820.0582 ppb20,000
City of FullertonFullerton, CA15 of 3640.0560 ppb138,251
Jackson Water SystemJackson, TN12 of 1720.0555 ppb95,501
South Farmingdale WDFarmingdale, NY1 of 3080.0545 ppb44,700
Monrovia Water DepartmentMonrovia, CA5 of 580.0500 ppb36,590
Miramar (East & West) PlantsMiramar, FL1 of 60.0417 ppb128,729
Town of Hempstead Water DepartmentEast Meadow, NY5 of 3180.0381 ppb110,000
NJ American Water - Western*Jericho, NJ1 of 460.0326 ppb264,586
East Pasadena Water CompanyPasadena, CA19 of 3900.0303 ppb10,978
Wallingford Water DepartmentWallingford, CT1 of 170.0294 ppb37,267
City of Buena ParkBuena Park, CA2 of 380.0289 ppb82,450
Lee County Utilities*Fort Myers, FL1 of 70.0286 ppb236,944
Tract 180 Mutual Water CompanyCudahy, CA1 of 190.0279 ppb14,000
South Adams County Water and Sanitation DistrictCommerce City, CO4 of 1200.0217 ppb51,465
Montgomery Water Works*Montgomery, AL1 of 280.0193 ppb240,840
Emerald Coast Utilities Authority*Pensacola, FL6 of 1740.0190 ppb249,872
AlbanyAlbany, GA1 of 290.0190 ppb87,029
Port Washington WD38 Sqndy Hollow Rd, NY7 of 2620.0185 ppb34,000
City of Edmond - Arcadia Lake*Arcadia, OK1 of 470.0153 ppb77,616
Suez*Boise, ID3 of 1480.0149 ppb223,154
City of Santa AnaSanta Ana, CA2 of 910.0143 ppb329,815
City of Hastings*Hastings, NE1 of 360.0139 ppb25,224

* This water utility supplies finished drinking water to at least one other water utility. The purchasing utility is not required to test for or report 1,1-Dichloroethylene, but it likely has the contaminant in its water supply.