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

106

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		3	11,281
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
Imperial, City of	Imperial, NE	1 of 5	0.169 ppb	2,071
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
Gahanna City PWS	Gahanna, OH	6 of 19	0.0995 ppb	33,323
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
Lockbourne Village Public Water System	Lockbourne, OH	6 of 19	0.0995 ppb	275
Obetz Satellite 2 Public Water System	Obetz, OH	6 of 19	0.0995 ppb	1,150
Obetz Satellite 6 Public Water System	Obetz, OH	6 of 19	0.0995 ppb	73
Bexley City PWS	Bexley, OH	6 of 19	0.0995 ppb	13,650
Leonard Park Public Water System	Columbus, OH	6 of 19	0.0995 ppb	266
Obetz Satellite 1 Public Water System	Obetz, OH	6 of 19	0.0995 ppb	192
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
Stanberry PWS*	Stanberry, MO	1 of 12	0.0625 ppb	1,200
Grant City PWS*	Grant City, MO	1 of 12	0.0625 ppb	826
Middle Fork Water County*	Maryville, MO	1 of 12	0.0625 ppb	25
Glandorf Village	Glandorf, OH	3 of 12	0.0500 ppb	1,001
Ottawa Village*	Ottawa, OH	3 of 12	0.0500 ppb	4,803
Putnam County-east Ottawa	Ottawa, OH	3 of 12	0.0500 ppb	60
Bluffton Village	Bluffton, OH	3 of 12	0.0500 ppb	4,125
Cass County Public Water Supply District 2*	Belton, MO	2 of 30	0.0480 ppb	3,665
Platte County Public Water Supply District 9*	Dearborn, MO	2 of 30	0.0480 ppb	1,505
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 2	Camden Point, MO	2 of 30	0.0480 ppb	815
Jackson County PWSD1	Grandview, MO	2 of 30	0.0480 ppb	24,475
Clay County Public Water Supply District 9	Smithville, MO	2 of 30	0.0480 ppb	2,532
Clay County Public Water Supply District 8	Excelsior Springs, MO	2 of 30	0.0480 ppb	2,090
Clay County Public Water Supply District 6	Kearney, MO	2 of 30	0.0480 ppb	4,700
Clay County Public Water Supply District 5	Liberty, MO	2 of 30	0.0480 ppb	1,000
Clay County Public Water Supply District 2	Liberty, MO	2 of 30	0.0480 ppb	3,345
Cass County Public Water Supply District 3	Raymore, MO	2 of 30	0.0480 ppb	2,736
Dearborn PWS	Dearborn, MO	2 of 30	0.0480 ppb	575
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
Weatherby Lake PWS	Weatherby Lake, MO	2 of 30	0.0480 ppb	1,923
Belton*	Belton, MO	2 of 30	0.0480 ppb	23,175
Raytown Water Company	Raytown, MO	2 of 30	0.0480 ppb	21,135
Raymore	Raymore, MO	2 of 30	0.0480 ppb	19,963
Platte City PWS	Platte City, MO	2 of 30	0.0480 ppb	4,977
Northmoor PWS	Northmoor, MO	2 of 30	0.0480 ppb	323
Birmingham Village of	Birmingham, MO	2 of 30	0.0480 ppb	190
Ferrelview PWS	Ferrelview, MO	2 of 30	0.0480 ppb	455
Lathrop PWS*	Lathrop, MO	2 of 30	0.0480 ppb	2,898
Kansas City*	Kansas City, MO	2 of 30	0.0480 ppb	460,000

* 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
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
Reynoldsburg City PWS	Reynoldsburg, OH	6 of 19	0.0995 ppb	35,893
Columbus Public Water System*	Columbus, OH	6 of 19	0.0995 ppb	1,159,817
Belton*	Belton, MO	2 of 30	0.0480 ppb	23,175
Kansas City*	Kansas City, MO	2 of 30	0.0480 ppb	460,000
Raymore	Raymore, MO	2 of 30	0.0480 ppb	19,963
Raytown Water Company	Raytown, MO	2 of 30	0.0480 ppb	21,135
Jackson County PWSD1	Grandview, MO	2 of 30	0.0480 ppb	24,475
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