Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

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

12

states detected

106

utilities detected

2.5 million

people served

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 UtilitiesPeople Served
Ohio141,263,203
Missouri58859,491
Louisiana2197,304
Florida6155,614
Kansas1225,211
Nebraska311,281
Nevada25,700
Wisconsin43,580
Kentucky13,490
Delaware2145
Oregon165
Indiana140
MORE
LESS

Filtering technologies that reduce alachlor

carbon filter icon

Activated Carbon

reverse osmosis icon

Reverse Osmosis

Utilities with the highest amounts of alachlor, 2015-2017

ALL UTILITIES
LARGE UTILITIES
UtilityLocationTestsAverage levelPeople served
Sussex Manor Mobile Home ParkDagsboro, DE1 of 10.610 ppb49
Sturgis Water WorksSturgis, KY1 of 40.500 ppb3,490
Muscatatuck Urban Training CenterButlerville, IN1 of 30.500 ppb40
Poynette Mobile EstatesPoynette, WI12 of 120.473 ppb150
Imperial, City ofImperial, NE1 of 50.169 ppb2,071
Teal PointMilford, DE1 of 10.150 ppb96
Maysville PWSMaysville, MO2 of 120.118 ppb1,100
City of Fort MeadeFort Meade, FL1 of 20.1000 ppb5,455
Obetz Satellite 2 Public Water SystemObetz, OH6 of 190.0995 ppb1,150
Lockbourne Village Public Water SystemLockbourne, OH6 of 190.0995 ppb275
Gahanna City PWSGahanna, OH6 of 190.0995 ppb33,323
Reynoldsburg City PWSReynoldsburg, OH6 of 190.0995 ppb35,893
Sanitary District #4Columbus, OH6 of 190.0995 ppb8,575
Obetz Satellite 6 Public Water SystemObetz, OH6 of 190.0995 ppb73
Leonard Park Public Water SystemColumbus, OH6 of 190.0995 ppb266
Bexley City PWSBexley, OH6 of 190.0995 ppb13,650
Columbus Public Water System*Columbus, OH6 of 190.0995 ppb1,159,817
Obetz Satellite 1 Public Water SystemObetz, OH6 of 190.0995 ppb192
Frostproof, City ofFrostproof, FL2 of 60.0867 ppb3,550
Middle Fork Water County*Maryville, MO1 of 120.0625 ppb25
Stanberry PWS*Stanberry, MO1 of 120.0625 ppb1,200
Grant City PWS*Grant City, MO1 of 120.0625 ppb826
Bluffton VillageBluffton, OH3 of 120.0500 ppb4,125
Ottawa Village*Ottawa, OH3 of 120.0500 ppb4,803
Glandorf VillageGlandorf, OH3 of 120.0500 ppb1,001
Putnam County-east OttawaOttawa, OH3 of 120.0500 ppb60
Clay County Public Water Supply District 2Liberty, MO2 of 300.0480 ppb3,345
Clay County Public Water Supply District 5Liberty, MO2 of 300.0480 ppb1,000
Clay County Public Water Supply District 6Kearney, MO2 of 300.0480 ppb4,700
Clay County Public Water Supply District 8Excelsior Springs, MO2 of 300.0480 ppb2,090
Clay County Public Water Supply District 9Smithville, MO2 of 300.0480 ppb2,532
Jackson County PWSD1Grandview, MO2 of 300.0480 ppb24,475
Platte County Public Water Supply District 2Camden Point, MO2 of 300.0480 ppb815
Platte County Cons Public Water Supply District 1Kansas City, MO2 of 300.0480 ppb5,025
Platte County Public Water Supply District 9*Dearborn, MO2 of 300.0480 ppb1,505
Cass County Public Water Supply District 3Raymore, MO2 of 300.0480 ppb2,736
Cass County Public Water Supply District 2*Belton, MO2 of 300.0480 ppb3,665
Cass County Public Water Supply District 6Raymore, MO2 of 300.0480 ppb2,307
Belton*Belton, MO2 of 300.0480 ppb23,175
Birmingham Village ofBirmingham, MO2 of 300.0480 ppb190
Dearborn PWSDearborn, MO2 of 300.0480 ppb575
Kansas City*Kansas City, MO2 of 300.0480 ppb460,000
Lathrop PWS*Lathrop, MO2 of 300.0480 ppb2,898
Ferrelview PWSFerrelview, MO2 of 300.0480 ppb455
Northmoor PWSNorthmoor, MO2 of 300.0480 ppb323
Platte City PWSPlatte City, MO2 of 300.0480 ppb4,977
RaymoreRaymore, MO2 of 300.0480 ppb19,963
Raytown Water CompanyRaytown, MO2 of 300.0480 ppb21,135
Weatherby Lake PWSWeatherby Lake, MO2 of 300.0480 ppb1,923
Cass County Public Water Supply District 10Peculiar, MO2 of 300.0480 ppb3,200

* 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.

UtilityLocationTestsAverage levelPeople served
Columbus Public Water System*Columbus, OH6 of 190.0995 ppb1,159,817
Reynoldsburg City PWSReynoldsburg, OH6 of 190.0995 ppb35,893
Gahanna City PWSGahanna, OH6 of 190.0995 ppb33,323
Bexley City PWSBexley, OH6 of 190.0995 ppb13,650
Jackson County PWSD1Grandview, MO2 of 300.0480 ppb24,475
Raytown Water CompanyRaytown, MO2 of 300.0480 ppb21,135
RaymoreRaymore, MO2 of 300.0480 ppb19,963
Kansas City*Kansas City, MO2 of 300.0480 ppb460,000
Belton*Belton, MO2 of 300.0480 ppb23,175
Miramar (East & West) PlantsMiramar, FL1 of 60.0433 ppb128,729
Thomas Hill PWSD 1*Moberly, MO1 of 120.0400 ppb10,315
Public Wholesale WSD 5*Iola, KS1 of 100.0290 ppb12,192
West Jefferson Waterworks District 2*Jefferson, LA1 of 110.0182 ppb188,770

* 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.