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EWG's Tap Water Database — 2019 UPDATE

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Methoxychlor

Status: National drinking water standard exists

 

Methoxychlor is an endocrine-disrupting, neurotoxic insecticide similar to DDT. Banned in the U.S. in 2002, methoxychlor was historically used on farm animals and in animal feed, lumber, gardens and agricultural crops.

2015-2017:

FOUND
FOUND ABOVE HEALTH GUIDELINES

7

states detected

17

utilities detected

170,000

people served

2

states over health guideline

2

utilities over health guideline

536

people served over health guideline

Health concerns for methoxychlor

Hormone disruption

Harm to the reproductive system

Harm to the kidney

Harm to the liver

Harm to the immune system

Harm to the brain and nervous system

State and national drinking water standards and health guidelines

EWG Health Guideline 0.09 ppb

The EWG Health Guideline of 0.09 ppb for methoxychlor 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 hormone disruption.

EPA Maximum Contaminant
Level (MCL) 40 ppb

The legal limit for methoxychlor, established in 1991, was based on a toxicity study in laboratory animals conducted in the 1980s.

ppb = parts per billion

States reporting methoxychlor in drinking water

UTILITIES REPORTING ABOVE HEALTH GUIDELINES UTILITIES WITH CONTAMINATION
State UtilitiesPeople Served UtilitiesPeople Served
Florida009157,209
Wisconsin0017,808
Texas0014,302
Nebraska13863471
Nevada11501150
North Carolina00158
Connecticut00130
MORE
LESS

Filtering technologies that reduce methoxychlor

carbon filter icon

Activated Carbon

reverse osmosis icon

Reverse Osmosis

Utilities with the highest amounts of methoxychlor, 2015-2017

ALL UTILITIES
LARGE UTILITIES
UtilityLocationTestsAverage levelPeople served
Riverbelle Properties LLC Mobile Home ParkReno, NV1 of 63.67 ppb150
Loomis, Village ofLoomis, NE1 of 50.0928 ppb386
Dayspring Health Public Water SystemHilliard, FL1 of 50.0454 ppb64
North Point Johnson LakeJohnson Lake, NE1 of 50.0368 ppb25
Harris County Municipal Utility District 130Houston, TX1 of 60.0350 ppb4,302
Lakeview Acres Lot OwnersJohnson Lake, NE1 of 130.0317 ppb60
Waverly Water SystemLake Wales, FL2 of 90.0252 ppb1,479
City of Fort MeadeFort Meade, FL1 of 20.0250 ppb5,455
Meadowbrook Manor LLCCenterbrook, CT1 of 10.0220 ppb30
Mulberry, City ofMulberry, FL2 of 50.0192 ppb3,780
Fern Crest Utilities Inc.Ft Lauderdale, FL1 of 30.0160 ppb4,643
Rolling Acres S/dRaleigh, NC1 of 110.0159 ppb58
Pine Ridge EstatesLakeland, FL1 of 60.0150 ppb52
South Broward Utility/sunriseFort Lauderdale, FL1 of 30.0113 ppb9,457
Miramar (East & West) PlantsMiramar, FL1 of 60.00817 ppb128,729
Mcfarland WaterworksMc Farland, WI1 of 30.00667 ppb7,808
Frostproof, City ofFrostproof, FL2 of 60.00227 ppb3,550
UtilityLocationTestsAverage levelPeople served
Miramar (East & West) PlantsMiramar, FL1 of 60.00817 ppb128,729