1,1-Dichloroethane

Status: No national drinking water standard exists

1,1-Dichloroethane is used in industrial chemical synthesis; in plastics, paint, varnish and finish removers; and as a pesticide. It can cause cancer.

2013-2019:

FOUND

FOUND ABOVE HEALTH GUIDELINES

states detected

376

utilities detected

20 million

people served

states over health guideline

utilities over health guideline

people served over health guideline

Health concerns for 1,1-dichloroethane

Cancer

Change to the heart and blood vessels

State and national drinking water standards and health guidelines

EWG Health Guideline 3 ppb

The EWG Health Guideline of 3 ppb for 1,1-dichloroethane was defined by the California Office of Environmental Health Hazard Assessment as a public health goal, the level of a drinking water contaminant that does not pose a significant health risk. This health guideline protects against cancer.

ppb = parts per billion

States reporting 1,1-dichloroethane in drinking water

	UTILITIES WITH CONTAMINATION
State	Utilities	People Served
California		57	8,991,077
New York		49	2,460,766
New Jersey		33	1,559,338
Pennsylvania		27	1,314,364
Maryland		7	443,116
Kansas		1	443,000
Ohio		20	435,455
Illinois		20	402,902
Wisconsin		11	371,688
Indiana		13	369,883
Massachusetts		17	336,134
Delaware		1	301,000
Michigan		4	284,729
Florida		3	263,550
Arizona		5	248,455
Iowa		12	199,941
Minnesota		7	165,518
Alabama		9	164,137
Nebraska		7	141,550
Alaska		7	115,049
Washington		5	106,855
Rhode Island		5	101,563
Connecticut		2	95,708
North Carolina		6	93,631
Arkansas		4	83,665
New Mexico		2	73,936
Colorado		1	63,808
Utah		3	61,300
Mississippi		5	56,266
South Carolina		8	55,243
Missouri		4	48,926
Louisiana		2	28,812
West Virginia		3	23,440
Texas		1	14,800
Vermont		9	14,335
Georgia		3	12,450
Oklahoma		1	11,442
New Hampshire		2	658

LESS

Filtering technologies that reduce 1,1-dichloroethane

Utilities with the highest amounts of 1,1-dichloroethane, 2013-2019

ALL UTILITIES

LARGE UTILITIES

Utility	Location	Tests	Average level	People served
Midvale City Water System	Midvale, UT	4 of 34	2.64 ppb	33,000
Swan Lake Resort	New River, NJ	18 of 21	2.18 ppb	70
N Walpole Village District/low	Bellows Falls, NH	40 of 45	2.03 ppb	600
Grafton Waterworks	Grafton, WI	69 of 158	1.79 ppb	11,745
Hicksville WD	Hicksville, NY	614 of 1,404	1.66 ppb	48,000
Hillview Village	Yorkshire, NY	2 of 9	1.56 ppb	84
Westbury WD	Westbury, NY	212 of 386	1.00 ppb	20,500
Bethpage WD	Bethpage, NY	487 of 951	0.952 ppb	33,000
Montmorenci Water District	Aiken, SC	23 of 26	0.805 ppb	3,722
Carle Place Water District	Carle Place, NY	87 of 231	0.671 ppb	9,005
Grafton Water District*	Grafton, MA	6 of 64	0.610 ppb	10,703
City of Taneytown	Taneytown, MD	2 of 7	0.600 ppb	6,750
Ausable Heights Water System	Keeseville, NY	1 of 1	0.500 ppb	46
Port Washington WD	Port Washington, NY	196 of 528	0.449 ppb	34,000
South Huntington Water Department	South Huntington, NY	16 of 23	0.408 ppb	81,760
Merrill Waterworks	Merrill, WI	3 of 3	0.370 ppb	9,661
Meadowlark Acres Mobile Home Park	Sedalia, MO	1 of 3	0.343 ppb	35
Greenlawn WD	Greenlawn, NY	17 of 20	0.343 ppb	42,000
City of Broussard Highway 90 Water System	Broussard, LA	8 of 24	0.338 ppb	3,087
Meridian Heights Water District	Port Orchard, WA	1 of 2	0.325 ppb	126
Garfield Water Department	Garfield, NJ	30 of 91	0.320 ppb	30,487
Smithtown WD	Kings Park, NY	1 of 1	0.310 ppb	19,635
Altoona Waterworks	Altoona, WI	6 of 6	0.310 ppb	7,345
Burlington Water Department	Burlington, MA	4 of 47	0.309 ppb	25,392
Rockford	Rockford, IL	12 of 52	0.307 ppb	147,051
Jefferson County Public Water Supply District 6	House Springs, MO	13 of 35	0.291 ppb	7,300
Abbotsford Waterworks	Abbotsford, WI	2 of 2	0.280 ppb	1,956
Bets Water System	Oak Harbor, WA	3 of 6	0.267 ppb	50
Sioux City Water Supply*	Sioux City, IA	8 of 12	0.255 ppb	82,759
Saint Anthony Village	Minneapolis, MN	6 of 10	0.254 ppb	9,234
Coleraine	Coleraine, MN	1 of 2	0.240 ppb	1,150
Brooke County Psd	Wellsburg, WV	1 of 2	0.240 ppb	240
Weirton Area Water Board*	Weirton, WV	1 of 2	0.240 ppb	22,694
Oakland Psd Golden Key Acres	Chester, WV	1 of 2	0.240 ppb	506
Plainview WD	Plainview, NY	62 of 466	0.238 ppb	35,000
Lomira Waterworks	Lomira, WI	4 of 5	0.236 ppb	2,461
Elsberry PWS	Elsberry, MO	4 of 14	0.234 ppb	1,963
Town of Hempstead Water Department	East Meadow, NY	190 of 1,073	0.217 ppb	110,000
Shellman	Shellman, GA	1 of 3	0.207 ppb	1,084
Pompton Lakes Mua	Pompton Lakes, NJ	7 of 16	0.205 ppb	11,435
Mineola	Mineola, NY	145 of 510	0.200 ppb	20,600
Hudson Water Supply	Hudson, MA	13 of 43	0.195 ppb	18,406
Jericho Water District	Syosset, NY	180 of 1,122	0.179 ppb	58,000
Mediapolis Water Supply	Mediapolis, IA	3 of 4	0.177 ppb	1,560
Hillsboro Water Works	Hillsboro, IA	3 of 4	0.177 ppb	234
Rathbun Reg Water Association (burlington)*	Centerville, IA	3 of 4	0.177 ppb	7,095
Willingboro MUA*	Riverside, NJ	11 of 36	0.170 ppb	35,000
Holden Water Division, DPW	Holden, MA	14 of 53	0.166 ppb	17,106
Garden City	Garden City, NY	80 of 743	0.155 ppb	46,000
Saugatucket Springs	Providence, RI	1 of 4	0.150 ppb	110

* 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-Dichloroethane, but it likely has the contaminant in its water supply.

Utility	Location	Tests	Average level	People served
Midvale City Water System	Midvale, UT	4 of 34	2.64 ppb	33,000
Grafton Waterworks	Grafton, WI	69 of 158	1.79 ppb	11,745
Hicksville WD	Hicksville, NY	614 of 1,404	1.66 ppb	48,000
Westbury WD	Westbury, NY	212 of 386	1.00 ppb	20,500
Bethpage WD	Bethpage, NY	487 of 951	0.952 ppb	33,000
Grafton Water District*	Grafton, MA	6 of 64	0.610 ppb	10,703
Port Washington WD	Port Washington, NY	196 of 528	0.449 ppb	34,000
South Huntington Water Department	South Huntington, NY	16 of 23	0.408 ppb	81,760
Greenlawn WD	Greenlawn, NY	17 of 20	0.343 ppb	42,000
Garfield Water Department	Garfield, NJ	30 of 91	0.320 ppb	30,487
Smithtown WD	Kings Park, NY	1 of 1	0.310 ppb	19,635
Burlington Water Department	Burlington, MA	4 of 47	0.309 ppb	25,392
Rockford	Rockford, IL	12 of 52	0.307 ppb	147,051
Sioux City Water Supply*	Sioux City, IA	8 of 12	0.255 ppb	82,759
Weirton Area Water Board*	Weirton, WV	1 of 2	0.240 ppb	22,694
Plainview WD	Plainview, NY	62 of 466	0.238 ppb	35,000
Town of Hempstead Water Department	East Meadow, NY	190 of 1,073	0.217 ppb	110,000
Pompton Lakes Mua	Pompton Lakes, NJ	7 of 16	0.205 ppb	11,435
Mineola	Mineola, NY	145 of 510	0.200 ppb	20,600
Hudson Water Supply	Hudson, MA	13 of 43	0.195 ppb	18,406
Jericho Water District	Syosset, NY	180 of 1,122	0.179 ppb	58,000
Willingboro MUA*	Riverside, NJ	11 of 36	0.170 ppb	35,000
Holden Water Division, DPW	Holden, MA	14 of 53	0.166 ppb	17,106
Garden City	Garden City, NY	80 of 743	0.155 ppb	46,000
WA of Great Neck North	Great Neck, NY	64 of 885	0.148 ppb	31,400
St James WD	St James, NY	153 of 488	0.142 ppb	10,587
Suffolk County Water Authority*	Bayshore, NY	153 of 488	0.142 ppb	1,100,000
Hempstead	Hempstead, NY	27 of 501	0.141 ppb	56,000
City of Lindsay	Lindsay, CA	3 of 15	0.125 ppb	13,445
Loveland City PWS	Loveland, OH	2 of 2	0.115 ppb	12,800
Batavia City*	Batavia, NY	4 of 7	0.0946 ppb	21,970
Edina	Edina, MN	6 of 27	0.0915 ppb	49,050
South Adams County Water and Sanitation District	Commerce City, CO	19 of 67	0.0879 ppb	63,808
Loves Park	Loves Park, IL	2 of 10	0.0848 ppb	23,744
Madison Water Department*	Madison, IN	1 of 6	0.0767 ppb	11,967
Dix Hills Water District	Huntington, NY	4 of 18	0.0728 ppb	34,522
Parsippany-Troy Hills Water Department	Parsippany, NJ	18 of 139	0.0717 ppb	50,400
Cedarburg L & W Commission	Cedarburg, WI	21 of 140	0.0640 ppb	11,900
Cape Girardeau	Cape Girardeau, MO	2 of 8	0.0624 ppb	39,628
South Farmingdale WD	Farmingdale, NY	42 of 651	0.0602 ppb	44,700
Peru Water Department	Peru, IN	2 of 3	0.0600 ppb	11,417
South Bend Water Works	South Bend, IN	12 of 149	0.0554 ppb	112,400
Aqua Ohio - City of Massillon*	Massillon, OH	2 of 4	0.0493 ppb	90,000
Jonesboro Water System*	Jonesboro, AR	3 of 35	0.0489 ppb	79,864
Lafayette Water Works*	Lafayette, IN	2 of 10	0.0480 ppb	67,140
Hamlet Water System*	Hamlet, NC	3 of 4	0.0425 ppb	10,289
Taylorville*	Taylorville, IL	4 of 4	0.0425 ppb	16,396
Golden Heart Utilities*	Fairbanks, AK	1 of 1	0.0400 ppb	78,324
Pennsylvania American Water Berwick	Milton, PA	2 of 2	0.0400 ppb	12,880
Plainfield Township	Mcbain, MI	4 of 4	0.0400 ppb	42,271