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EWG's Tap Water Database — 2019 UPDATE

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cis-1,2-Dichloroethylene

Status: National drinking water standard exists

 

1,2-Dichloroethylene, a neurotoxic solvent, exists in two different forms: trans-1,2-dichloroethylene and cis-1,2-dichloroethylene. A mixture of the two forms is used to manufacture other solvents and chemical products.

2015-2017:

FOUND

37

states detected

274

utilities detected

8.1 million

people served

Health concerns for cis-1,2-dichloroethylene

Harm to the brain and nervous system

Harm to the kidney

Harm to the liver

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 70 ppb

The legal limit for cis-1,2-dichloroethylene, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1980s.

ppb = parts per billion

States reporting cis-1,2-dichloroethylene in drinking water

UTILITIES WITH CONTAMINATION
State UtilitiesPeople Served
California201,450,462
New York301,207,180
Pennsylvania271,059,305
Florida28935,002
Ohio22555,274
Iowa34546,692
Wisconsin11314,550
Delaware2303,300
Illinois12270,539
New Jersey12254,270
Minnesota9229,472
Idaho2223,424
Indiana4202,256
Michigan3192,973
Massachusetts882,047
Arizona144,998
Connecticut137,267
West Virginia736,264
Nebraska333,955
Alabama231,097
Arkansas621,683
North Carolina619,477
Louisiana215,129
South Dakota113,646
New Hampshire512,643
Virginia311,101
Georgia211,025
Alaska18,193
Washington13,598
Missouri11,938
Oklahoma11,060
Tennessee1915
Montana1290
Maine1275
Nevada2190
Wyoming155
New Mexico150
MORE
LESS

Filtering technologies that reduce cis-1,2-dichloroethylene

carbon filter icon

Activated Carbon

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Reverse Osmosis

Utilities with the highest amounts of cis-1,2-dichloroethylene, 2015-2017

ALL UTILITIES
LARGE UTILITIES
UtilityLocationTestsAverage levelPeople served
Pawc HomesiteWilkes-barre, PA24 of 2417.8 ppb55
Saint Louis ParkSt. Louis Park, MN25 of 308.45 ppb45,505
Swan Lake ResortNew River, NJ10 of 117.54 ppb70
Washington Pike PsdWellsburg, WV2 of 25.52 ppb3,571
Wellsburg, City Of*Wellsburg, WV2 of 25.52 ppb3,468
Brooke County PsdWellsburg, WV4 of 45.45 ppb240
Oakland Psd Golden Key AcresWeirton, WV4 of 45.45 ppb506
Weirton Area Water Board*Weirton, WV4 of 45.45 ppb22,694
Exeter River Mobile Home ParkExeter, NH3 of 35.43 ppb980
Richland Township Water Authority*Quakertown, PA13 of 135.11 ppb3,958
Bethpage WDBethpage, NY139 of 4964.76 ppb33,000
Andrews Water DepartmentAndrews, IN1 of 14.10 ppb1,149
Cdcr-high Desert State PrisonSusanville, CA78 of 823.62 ppb9,132
Garfield Water DepartmentGarfield, NJ24 of 423.56 ppb30,487
City of Stuart - Water PlantStuart, FL25 of 493.46 ppb19,000
East AltonEast Alton, IL13 of 133.46 ppb6,695
Hillcrest Water DistrictBrewster, NY12 of 413.35 ppb305
Palmer Water District No.1Palmer, MA3 of 153.22 ppb4,789
Beacham Apartments No. 2Jacksonville, NC3 of 33.10 ppb475
EdinaEdina, MN4 of 62.97 ppb49,050
Purcellville, Town ofPurcellville, VA9 of 222.94 ppb8,606
Camelot Mobile Home ParkAsheville, NC12 of 142.81 ppb85
Mars Borough Water WorksMars, PA3 of 32.47 ppb1,956
Goshen Water UtilityGoshen, IN1 of 22.40 ppb32,267
RockfordRockford, IL20 of 542.01 ppb155,000
Spring ParkSpring Park, MN16 of 271.97 ppb1,673
Jefferson Water DepartmentJefferson, IA3 of 31.63 ppb4,345
Parker Little River Water SystemAcworth, GA6 of 61.33 ppb114
Grafton Water District*Grafton, MA4 of 281.32 ppb10,703
Hicksville WDHicksville, NY190 of 6831.30 ppb48,000
Old West CabinsJackson, WY6 of 61.30 ppb55
Perkasie Regional AuthorityPerkasie, PA14 of 321.29 ppb11,100
Coraopolis Water & Sewer Authority*Coraopolis, PA4 of 51.27 ppb5,804
Oakboro, Town ofOakboro, NC5 of 51.27 ppb3,063
Fort Edward Water District #2 (ft Edward V)Fort Edward, NY47 of 1391.26 ppb80
Fort Edward Village*Fort Edward, NY47 of 1391.26 ppb3,232
North Canton City PWSNorth Canton, OH1 of 11.24 ppb17,404
Charleston Correctional FacCharleston, ME1 of 31.17 ppb275
California Domestic Water Company*Whittier, CA65 of 1261.15 ppb1,200
Fox River GroveFox River Grove, IL5 of 81.11 ppb4,700
Triangle Manufactured Home CommunityArlington Heights, IL6 of 71.08 ppb124
Sandwich Estates Mobile Home ParkChicago, IL6 of 71.08 ppb90
Sandwich*Sandwich, IL6 of 71.08 ppb6,687
Whitehall Twp AuthorityWhitehall, PA12 of 331.07 ppb13,063
South Bend Water WorksSouth Bend, IN18 of 591.05 ppb112,400
Union Springs Village*Union Springs, NY11 of 111.03 ppb3,000
Springport Water District #1 - SouthCayuga, NY11 of 111.03 ppb500
Springport Water District #1 - NorthCayuga, NY11 of 111.03 ppb500
Hudson Water SupplyHudson, IA1 of 11.03 ppb2,282
Waterloo Water Works*Waterloo, IA1 of 11.03 ppb70,070

* 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 cis-1,2-Dichloroethylene, but it likely has the contaminant in its water supply.

UtilityLocationTestsAverage levelPeople served
Saint Louis ParkSt. Louis Park, MN25 of 308.45 ppb45,505
Weirton Area Water Board*Weirton, WV4 of 45.45 ppb22,694
Bethpage WDBethpage, NY139 of 4964.76 ppb33,000
Garfield Water DepartmentGarfield, NJ24 of 423.56 ppb30,487
City of Stuart - Water PlantStuart, FL25 of 493.46 ppb19,000
EdinaEdina, MN4 of 62.97 ppb49,050
Goshen Water UtilityGoshen, IN1 of 22.40 ppb32,267
RockfordRockford, IL20 of 542.01 ppb155,000
Grafton Water District*Grafton, MA4 of 281.32 ppb10,703
Hicksville WDHicksville, NY190 of 6831.30 ppb48,000
Perkasie Regional AuthorityPerkasie, PA14 of 321.29 ppb11,100
North Canton City PWSNorth Canton, OH1 of 11.24 ppb17,404
Whitehall Twp AuthorityWhitehall, PA12 of 331.07 ppb13,063
South Bend Water WorksSouth Bend, IN18 of 591.05 ppb112,400
Waterloo Water Works*Waterloo, IA1 of 11.03 ppb70,070
Loves ParkLoves Park, IL3 of 91.000 ppb22,476
FaribaultFaribault, MN8 of 80.973 ppb23,415
South Huntington Water DepartmentSouth Huntington, NY1 of 10.950 ppb81,760
Holden Water Division, DPWHolden, MA13 of 250.928 ppb16,942
Bourne Water District*Pocasset, MA10 of 280.914 ppb22,500
City of RiponRipon, CA3 of 100.780 ppb14,915
Grafton WaterworksGrafton, WI30 of 760.774 ppb11,745
WA of Great Neck NorthGreat Neck, NY106 of 4470.730 ppb31,400
Linda County Water DistrictMarysville, CA2 of 110.691 ppb13,800
Eden PrairieEden Prairie, MN3 of 30.657 ppb62,004
Warren Water District*Indianola, IA18 of 180.656 ppb18,045
KalamazooKalamazoo, MI3 of 30.600 ppb150,000
Garden CityGarden City, NY89 of 3850.574 ppb46,000
Clive Water DepartmentClive, IA3 of 30.567 ppb15,447
Indiana American Water - KokomoGreenwood, IN2 of 30.567 ppb56,440
Urbandale Water UtilityUrbandale, IA2 of 20.550 ppb39,463
City of Plaquemine Water System*Plaquemine, LA6 of 100.542 ppb14,043
Sioux City Water Supply*Sioux City, IA6 of 80.538 ppb82,759
Riviera Beach Utility District*Riviera Beach, FL9 of 440.533 ppb31,500
Cedarburg L & W CommissionCedarburg, WI22 of 720.510 ppb11,900
Waukee Water SupplyWaukee, IA1 of 10.500 ppb13,790
Cal-water Service Company - ChicoChico, CA67 of 3920.498 ppb100,435
Warminster Municipal Authority*Warminster, PA1 of 310.490 ppb40,000
HempsteadHempstead, NY45 of 1790.489 ppb56,000
FreeportFreeport, IL3 of 70.453 ppb26,443
Olivehurst Public UDOlivehurst, CA4 of 80.380 ppb13,738
Huber Heights Public Water SystemHuber Heights, OH8 of 620.362 ppb38,278
Plainview WDPlainview, NY31 of 2330.338 ppb35,000
Brookwood Comm. Water SystemFayetteville, NC14 of 410.314 ppb15,665
Emmaus Borough Public Water*Emmaus, PA18 of 600.305 ppb14,000
Collingswood Water DeparCollingswood, NJ5 of 250.305 ppb21,000
City of Winter SpringsWinter Springs, FL1 of 50.260 ppb35,996
North Penn Water Authority*Lansdale, PA13 of 1660.257 ppb82,822
Johnston Municipal Water SupplyJohnston, IA6 of 170.241 ppb17,306
Des Moines Water Works*Des Moines, IA6 of 170.241 ppb233,020

* 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 cis-1,2-Dichloroethylene, but it likely has the contaminant in its water supply.