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.

2017-2019:

FOUND

FOUND ABOVE LEGAL LIMIT

states detected

264

utilities detected

5.8 million

people served

states over legal limit

utilities over legal limit

people served over legal limit

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	Utilities	People Served
California		20	1,216,090
New York		34	856,500
Florida		23	656,746
Iowa		38	394,094
Illinois		19	328,872
Wisconsin		12	316,168
Delaware		1	301,000
Michigan		12	299,830
Minnesota		8	236,989
New Jersey		11	230,992
Indiana		3	167,282
Pennsylvania		18	150,932
Massachusetts		11	135,927
Ohio		10	119,023
Georgia		3	98,505
Arizona		2	45,728
West Virginia		7	36,154
Nebraska		3	34,122
Washington		2	26,396
Arkansas		5	21,148
North Carolina		4	19,279
Louisiana		2	15,129
South Dakota		1	13,646
New Hampshire		5	12,643
Virginia		3	10,517
Alabama		1	10,098
North Dakota		1	6,585
Missouri		1	1,938
Oregon		1	249
Nevada		2	80
Wyoming		1	55

LESS

Filtering technologies that reduce cis-1,2-dichloroethylene

Utilities with the highest amounts of cis-1,2-dichloroethylene, 2017-2019

ALL UTILITIES

LARGE UTILITIES

Utility	Location	Tests	Average level	People served
Andrews Water Department	Andrews, IN	2 of 2	21.1 ppb	1,149
Paw Homesite	Scranton, PA	40 of 40	16.0 ppb	63
Swan Lake Resort	New River, NJ	17 of 21	12.2 ppb	70
Crystal Lake	Crystal Lake, IL	41 of 65	12.1 ppb	40,743
Saint Louis Park	St. Louis Park, MN	38 of 48	6.41 ppb	47,221
Bethpage WD	Bethpage, NY	276 of 941	6.12 ppb	33,000
Oakland Psd Golden Key Acres	Chester, WV	10 of 10	5.64 ppb	506
Weirton Area Water Board*	Weirton, WV	10 of 10	5.64 ppb	22,694
Brooke County Psd	Wellsburg, WV	10 of 10	5.64 ppb	240
Exeter River Mobile Home Park	Exeter, NH	6 of 6	5.05 ppb	980
Richland Township Water Authority*	Quakertown, PA	22 of 22	4.96 ppb	6,800
Cdcr-high Desert State Prison	Susanville, CA	118 of 135	3.71 ppb	9,132
Beacham Apartments No. 2	Raleigh, NC	5 of 5	3.50 ppb	475
Garfield Water Department	Garfield, NJ	50 of 83	3.41 ppb	30,487
East Alton	East Alton, IL	25 of 26	3.13 ppb	6,300
Hillcrest Water District	Brewster, NY	17 of 70	2.80 ppb	305
Fox River Grove	Fox River Grove, IL	14 of 23	2.77 ppb	4,854
Wellsburg, City Of*	Wellsburg, WV	13 of 14	2.61 ppb	3,468
Washington Pike Psd	Wellsburg, WV	13 of 14	2.61 ppb	3,571
Palmer Water District No.1	Palmer, MA	7 of 36	2.49 ppb	4,789
Edina	Edina, MN	13 of 19	2.48 ppb	49,050
Blackman Township*	Hamburg, MI	35 of 38	2.47 ppb	4,357
Jackson*	Jackson, MI	35 of 38	2.47 ppb	33,165
Mars Borough Water Works	Mars, PA	6 of 6	2.46 ppb	1,956
Goshen Water Utility	Goshen, IN	1 of 2	2.40 ppb	32,267
Ritzville Water Department	Ritzville, WA	1 of 10	2.30 ppb	1,725
Milford, Village of	Lansing, MI	28 of 28	2.22 ppb	6,366
Purcellville, Town of	Purcellville, VA	15 of 48	2.15 ppb	8,606
Coalton	Nokomis, IL	7 of 34	1.96 ppb	350
Nokomis*	Nokomis, IL	7 of 34	1.96 ppb	2,370
Coraopolis Water & Sewer Authority*	Coraopolis, PA	7 of 8	1.94 ppb	6,000
Rockford	Rockford, IL	37 of 113	1.81 ppb	147,051
City of Stuart - Water Plant	Stuart, FL	77 of 215	1.78 ppb	19,000
Beardstown	Beardstown, IL	14 of 16	1.68 ppb	6,123
Hicksville WD	Hicksville, NY	435 of 1,391	1.65 ppb	48,000
Spring Park	Spring Park, MN	26 of 45	1.59 ppb	1,743
Huber Heights Public Water System	Huber Heights, OH	29 of 119	1.51 ppb	38,278
Jefferson Water Department	Jefferson, IA	7 of 7	1.42 ppb	4,345
Burlington Water Department	Burlington, MA	4 of 41	1.39 ppb	25,392
Parker Little River Water System	Acworth, GA	12 of 12	1.38 ppb	114
Loves Park	Loves Park, IL	6 of 16	1.26 ppb	23,744
Parchment	Parchment, MI	4 of 4	1.25 ppb	3,174
Kalamazoo*	Kalamazoo, MI	4 of 4	1.25 ppb	192,992
Fort Edward Village*	Fort Edward, NY	61 of 190	1.24 ppb	3,232
Fort Edward Water District #2 (ft Edward V)	Fort Edward, NY	61 of 190	1.24 ppb	80
Whitehall Twp Authority	Whitehall, PA	16 of 38	1.23 ppb	13,063
Oakboro, Town of	Oakboro, NC	8 of 8	1.23 ppb	3,063
Old West Cabins	Jackson, WY	7 of 7	1.19 ppb	55
California Domestic Water Company*	Whittier, CA	157 of 282	1.16 ppb	1,200
City of Ripon	Ripon, CA	5 of 15	1.11 ppb	14,915

* 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.

Utility	Location	Tests	Average level	People served
Crystal Lake	Crystal Lake, IL	41 of 65	12.1 ppb	40,743
Saint Louis Park	St. Louis Park, MN	38 of 48	6.41 ppb	47,221
Bethpage WD	Bethpage, NY	276 of 941	6.12 ppb	33,000
Weirton Area Water Board*	Weirton, WV	10 of 10	5.64 ppb	22,694
Garfield Water Department	Garfield, NJ	50 of 83	3.41 ppb	30,487
Edina	Edina, MN	13 of 19	2.48 ppb	49,050
Jackson*	Jackson, MI	35 of 38	2.47 ppb	33,165
Goshen Water Utility	Goshen, IN	1 of 2	2.40 ppb	32,267
Rockford	Rockford, IL	37 of 113	1.81 ppb	147,051
City of Stuart - Water Plant	Stuart, FL	77 of 215	1.78 ppb	19,000
Hicksville WD	Hicksville, NY	435 of 1,391	1.65 ppb	48,000
Huber Heights Public Water System	Huber Heights, OH	29 of 119	1.51 ppb	38,278
Burlington Water Department	Burlington, MA	4 of 41	1.39 ppb	25,392
Loves Park	Loves Park, IL	6 of 16	1.26 ppb	23,744
Kalamazoo*	Kalamazoo, MI	4 of 4	1.25 ppb	192,992
Whitehall Twp Authority	Whitehall, PA	16 of 38	1.23 ppb	13,063
City of Ripon	Ripon, CA	5 of 15	1.11 ppb	14,915
Perkasie Regional Authority	Sellersville, PA	19 of 57	1.04 ppb	15,000
South Huntington Water Department	South Huntington, NY	3 of 3	1.02 ppb	81,760
Grafton Water District*	Grafton, MA	6 of 58	0.918 ppb	10,703
Yarmouth Water Department*	West Yarmouth, MA	2 of 2	0.900 ppb	39,635
WA of Great Neck North	Great Neck, NY	212 of 871	0.886 ppb	31,400
Clive Water Department	Clive, IA	7 of 7	0.886 ppb	15,447
Faribault	Faribault, MN	12 of 12	0.862 ppb	23,718
Bourne Water District*	Pocasset, MA	19 of 49	0.805 ppb	22,500
Holden Water Division, DPW	Holden, MA	25 of 49	0.779 ppb	17,106
Grafton Waterworks	Grafton, WI	63 of 156	0.773 ppb	11,745
Linda County Water District	Marysville, CA	3 of 13	0.723 ppb	13,800
South Bend Water Works	South Bend, IN	55 of 131	0.681 ppb	112,400
Garden City	Garden City, NY	176 of 731	0.671 ppb	46,000
Warren Water District*	Indianola, IA	29 of 29	0.669 ppb	18,045
Menomonee Falls WW - Surface Water	Menomonee Falls, WI	2 of 15	0.667 ppb	23,867
Eden Prairie	Eden Prairie, MN	5 of 6	0.645 ppb	63,726
Waukee Water Supply*	Waukee, IA	9 of 9	0.600 ppb	13,790
Urbandale Water Utility	Urbandale, IA	7 of 7	0.571 ppb	39,463
Riviera Beach Utility District*	Riviera Beach, FL	11 of 47	0.507 ppb	34,700
Collingswood Water Depar	Collingswood, NJ	16 of 50	0.480 ppb	24,500
Battle Creek - Verona System*	Clare, MI	23 of 79	0.461 ppb	43,975
Hampton Shaler Water Authority*	Allison Park, PA	3 of 10	0.448 ppb	62,497
North Canton City PWS	North Canton, OH	3 of 8	0.405 ppb	17,404
Olivehurst Public UD	Olivehurst, CA	7 of 14	0.383 ppb	13,738
Cedarburg L & W Commission	Cedarburg, WI	35 of 136	0.379 ppb	11,900
Hempstead	Hempstead, NY	91 of 497	0.346 ppb	56,000
Freeport	Freeport, IL	6 of 18	0.346 ppb	25,648
Brookwood Comm. Water System	Hampstead, NC	23 of 78	0.308 ppb	15,665
City of Plaquemine Water System*	Plaquemine, LA	12 of 28	0.302 ppb	14,043
Johnston Municipal Water Supply	Johnston, IA	15 of 41	0.285 ppb	17,306
Des Moines Water Works*	Des Moines, IA	15 of 41	0.285 ppb	233,020
Indiana American Water - Kokomo	Greenwood, IN	2 of 6	0.283 ppb	53,733
City of Hutchinson*	Hutchinson, KS	1 of 3	0.280 ppb	40,623