Know Your Environment. Protect Your Health.

CONTAMINANT

Alachlor (Lasso)

STATES DETECTED

8

serves

174,000

utilities detected

29

Overview

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

State, National, and Health Guidelines for Drinking Water

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

National Standard Exists

Health Concerns:

  • Cancer

  • Harm to the liver

  • Harm to the kidney

  • Harm to the spleen

Want to remove
Alachlor (Lasso) from your water?

Try these filter technologies:

Activated Carbon

Reverse Osmosis

understand filter technology

Alachlor (Lasso) around the Country

UTILITIES WITH CONTAMINATION
State Utilities People Served
Louisiana585,653
Florida1154,127
Iowa313,999
Arizona19,094
Wisconsin56,505
New Jersey12,463
Ohio21,750
Maryland186

Utilities with the highest amounts of alachlor, 2021-2023

ALL UTILITIES
LARGE UTILITIES
Utility Location Tests Average level People served
Lamoni Municipal UtilitiesLamoni, IA1 of 21.92 ppb2,104
Colonial Mill Estates Mobile Home ParkFreeland, MD2 of 20.535 ppb86
Pierson Water SupplyPierson, IA1 of 10.400 ppb337
Villa MargaretOkeechobee, FL1 of 10.200 ppb132
Soundings Yacht & Tennis ClubHobe Sound, FL1 of 10.200 ppb450
Indian River Shores Mobile Home ParkMicco, FL1 of 10.150 ppb55
Hillcrest Estates, Inc.Zephyrhills, FL1 of 10.150 ppb130
Deer Run McSalem, OH1 of 20.115 ppb106
Poynette Mobile EstatesPoynette, WI12 of 120.0818 ppb150
Oskaloosa Municipal Water DepartmentOskaloosa, IA1 of 10.0600 ppb11,558
Mechanicsburg Village Public Water SystemMechanicsburg, OH1 of 10.0500 ppb1,644
City of EustisEustis, FL1 of 70.0471 ppb38,966
Arizona Water Company - Sierra VistaPhoenix, AZ1 of 150.0313 ppb9,094
Oak Park Trailer Court LLCTitusville, FL1 of 10.0300 ppb90
Mauston WaterworksMauston, WI1 of 30.0240 ppb4,456
Lake Marian ResortKenansville, FL1 of 90.0222 ppb32
Dubach Water SystemDubach, LA1 of 20.0190 ppb1,218
Granton WaterworksGranton, WI1 of 20.0125 ppb349
Upper Deerfield Township Water DepartmentSeabrook, NJ1 of 20.01000 ppb2,463
Pine Grove VillaBancroft, WI1 of 10.00810 ppb75
Orfordville WaterworksOrfordville, WI1 of 20.00800 ppb1,475
Sunrise SouthwestFort Lauderdale, FL1 of 40.00725 ppb10,750
Jonesboro Water SystemJonesboro, LA1 of 60.00550 ppb6,132
Houma Water Treatment Service AreaHouma, LA1 of 60.00533 ppb11,148
Twa Sunbridge Water Treatment Plant*St. Cloud, FL1 of 70.00414 ppb542
Tavistock East (consec.)Orlando, FL1 of 70.00414 ppb1,043
Town Of AstatulaAstatula, FL1 of 40.00243 ppb1,937
Latanier Water Association*Alexandria, LA1 of 520.000692 ppb357
City of Alexandria Water System*Alexandria, LA1 of 520.000692 ppb66,798

* 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
Oskaloosa Municipal Water DepartmentOskaloosa, IA1 of 10.0600 ppb11,558
City of EustisEustis, FL1 of 70.0471 ppb38,966
Sunrise SouthwestFort Lauderdale, FL1 of 40.00725 ppb10,750
Houma Water Treatment Service AreaHouma, LA1 of 60.00533 ppb11,148
City of Alexandria Water System*Alexandria, LA1 of 520.000692 ppb66,798

* 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.

Know the Standards

Understand EWG’s guidelines on contaminants in your water.

view ewg’s standards

Take Action

Interested in supporting other causes? Learn more about our ongoing campaigns and how you can make a difference.

LEARN MORE

Need help finding a filter?

Discover top-rated filters that protect your family from harmful contaminants.

GET THE GUIDE

We’re in this together

Donate today and join the fight to protect our environmental health.

DONATE TODAY

Protect your water

Sign our petition to protect PFAS drinking water standards

TAKE ACTION