Alachlor (Lasso)

Status: National drinking water standard exists

Alachlor is a widely used agricultural herbicide. It causes cancer in laboratory animals and may be carcinogenic to people.

2015-2017:

FOUND

FOUND ABOVE LEGAL LIMIT

states detected

105

utilities detected

2.5 million

people served

states over legal limit

utilities over legal limit

people served over legal limit

Health concerns for alachlor

Cancer

Harm to the liver

Harm to the kidney

Harm to the spleen

State and national drinking water standards and health guidelines

EPA Maximum Contaminant
Level (MCL) 2 ppb

The legal limit for alachlor, established in 1991, was based on toxicity studies in laboratory animals conducted in the 1980s.

ppb = parts per billion

States reporting alachlor in drinking water

	UTILITIES WITH CONTAMINATION
State	Utilities	People Served
Ohio		14	1,263,203
Missouri		58	859,491
Louisiana		2	197,304
Florida		6	155,614
Kansas		12	25,211
Nebraska		2	9,210
Nevada		2	5,700
Wisconsin		4	3,580
Kentucky		1	3,490
Delaware		2	145
Oregon		1	65
Indiana		1	40

LESS

Filtering technologies that reduce alachlor

Utilities with the highest amounts of alachlor, 2015-2017

ALL UTILITIES

LARGE UTILITIES

Utility	Location	Tests	Average level	People served
Sussex Manor Mobile Home Park	Dagsboro, DE	1 of 1	0.610 ppb	49
Sturgis Water Works	Sturgis, KY	1 of 4	0.500 ppb	3,490
Muscatatuck Urban Training Center	Butlerville, IN	1 of 3	0.500 ppb	40
Poynette Mobile Estates	Poynette, WI	12 of 12	0.473 ppb	150
Teal Point	Milford, DE	1 of 1	0.150 ppb	96
Maysville PWS	Maysville, MO	2 of 12	0.118 ppb	1,100
City of Fort Meade	Fort Meade, FL	1 of 2	0.1000 ppb	5,455
Bexley City PWS	Bexley, OH	6 of 19	0.0995 ppb	13,650
Gahanna City PWS	Gahanna, OH	6 of 19	0.0995 ppb	33,323
Obetz Satellite 6 Public Water System	Obetz, OH	6 of 19	0.0995 ppb	73
Obetz Satellite 1 Public Water System	Obetz, OH	6 of 19	0.0995 ppb	192
Lockbourne Village Public Water System	Lockbourne, OH	6 of 19	0.0995 ppb	275
Leonard Park Public Water System	Columbus, OH	6 of 19	0.0995 ppb	266
Reynoldsburg City PWS	Reynoldsburg, OH	6 of 19	0.0995 ppb	35,893
Sanitary District #4	Columbus, OH	6 of 19	0.0995 ppb	8,575
Obetz Satellite 2 Public Water System	Obetz, OH	6 of 19	0.0995 ppb	1,150
Columbus Public Water System*	Columbus, OH	6 of 19	0.0995 ppb	1,159,817
Frostproof, City of	Frostproof, FL	2 of 6	0.0867 ppb	3,550
Grant City PWS*	Grant City, MO	1 of 12	0.0625 ppb	826
Stanberry PWS*	Stanberry, MO	1 of 12	0.0625 ppb	1,200
Middle Fork Water County*	Maryville, MO	1 of 12	0.0625 ppb	25
Bluffton Village	Bluffton, OH	3 of 12	0.0500 ppb	4,125
Putnam County-east Ottawa	Ottawa, OH	3 of 12	0.0500 ppb	60
Ottawa Village*	Ottawa, OH	3 of 12	0.0500 ppb	4,803
Glandorf Village	Glandorf, OH	3 of 12	0.0500 ppb	1,001
Clay County Public Water Supply District 2	Liberty, MO	2 of 30	0.0480 ppb	3,345
Clay County Public Water Supply District 5	Liberty, MO	2 of 30	0.0480 ppb	1,000
Clay County Public Water Supply District 6	Kearney, MO	2 of 30	0.0480 ppb	4,700
Clay County Public Water Supply District 8	Excelsior Springs, MO	2 of 30	0.0480 ppb	2,090
Clay County Public Water Supply District 9	Smithville, MO	2 of 30	0.0480 ppb	2,532
Jackson County PWSD1	Grandview, MO	2 of 30	0.0480 ppb	24,475
Platte County Public Water Supply District 2	Camden Point, MO	2 of 30	0.0480 ppb	815
Platte County Cons Public Water Supply District 1	Kansas City, MO	2 of 30	0.0480 ppb	5,025
Platte County Public Water Supply District 9*	Dearborn, MO	2 of 30	0.0480 ppb	1,505
Cass County Public Water Supply District 3	Raymore, MO	2 of 30	0.0480 ppb	2,736
Cass County Public Water Supply District 2*	Belton, MO	2 of 30	0.0480 ppb	3,665
Cass County Public Water Supply District 6	Raymore, MO	2 of 30	0.0480 ppb	2,307
Cass County Public Water Supply District 10	Peculiar, MO	2 of 30	0.0480 ppb	3,200
Belton*	Belton, MO	2 of 30	0.0480 ppb	23,175
Birmingham Village of	Birmingham, MO	2 of 30	0.0480 ppb	190
Dearborn PWS	Dearborn, MO	2 of 30	0.0480 ppb	575
Kansas City*	Kansas City, MO	2 of 30	0.0480 ppb	460,000
Lathrop PWS*	Lathrop, MO	2 of 30	0.0480 ppb	2,898
Ferrelview PWS	Ferrelview, MO	2 of 30	0.0480 ppb	455
Northmoor PWS	Northmoor, MO	2 of 30	0.0480 ppb	323
Platte City PWS	Platte City, MO	2 of 30	0.0480 ppb	4,977
Raymore	Raymore, MO	2 of 30	0.0480 ppb	19,963
Raytown Water Company	Raytown, MO	2 of 30	0.0480 ppb	21,135
Weatherby Lake PWS	Weatherby Lake, MO	2 of 30	0.0480 ppb	1,923
Granton Waterworks	Granton, WI	1 of 2	0.0450 ppb	349

* 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 Alachlor (Lasso), but it likely has the contaminant in its water supply.

Utility	Location	Tests	Average level	People served
Columbus Public Water System*	Columbus, OH	6 of 19	0.0995 ppb	1,159,817
Reynoldsburg City PWS	Reynoldsburg, OH	6 of 19	0.0995 ppb	35,893
Gahanna City PWS	Gahanna, OH	6 of 19	0.0995 ppb	33,323
Bexley City PWS	Bexley, OH	6 of 19	0.0995 ppb	13,650
Jackson County PWSD1	Grandview, MO	2 of 30	0.0480 ppb	24,475
Raytown Water Company	Raytown, MO	2 of 30	0.0480 ppb	21,135
Raymore	Raymore, MO	2 of 30	0.0480 ppb	19,963
Kansas City*	Kansas City, MO	2 of 30	0.0480 ppb	460,000
Belton*	Belton, MO	2 of 30	0.0480 ppb	23,175
Miramar (East & West) Plants	Miramar, FL	1 of 6	0.0433 ppb	128,729
Thomas Hill PWSD 1*	Moberly, MO	1 of 12	0.0400 ppb	10,315
Public Wholesale WSD 5*	Iola, KS	1 of 10	0.0290 ppb	12,192
West Jefferson Waterworks District 2*	Jefferson, LA	1 of 11	0.0182 ppb	188,770