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EWG's Tap Water Database — 2019 UPDATE

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2,4-D

Chesterfield County Central Water System

2,4-D (2,4-dichlorophenoxyacetic acid) is a herbicide that can be applied directly to GMO corn and soy plants engineered to withstand this toxic chemical. Americans' exposures to 2,4-D from food and drinking water will likely increase in years to come as farmers plant more of these GMO crops. Read More.

2,4-D is an endocrine disruptor that interferes with thyroid hormones. The International Agency for Research on Cancer classifies 2,4-D as possibly carcinogenic to humans. In occupational studies, farmers exposed to 2,4-D tended to have higher incidences of damaged and malformed sperm. Laboratory animals exposed to 2,4-D during gestation are born underdeveloped and are more likely to have birth defects.

 

27

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND40ND
2013ND40ND
2014ND40ND
2015ND40ND
2016ND40ND
2017ND70ND

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 20 ppb

The EWG Health Guideline of 20 ppb for 2,4-D 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 harm to internal organs.

EPA Maximum Contaminant
Level (MCL) 70 ppb

The legal limit for 2,4-D, established in 1991, was based on toxicity studies in laboratory animals conducted in the 1980s. This limit may not fully protect against harm to the nervous system, harm to the thyroid, and hormone disruption.

ppb = parts per billion

All test results

Date Lab ID Result
2012-06-05E120400844ND
2012-06-05E120400839ND
2012-06-05E120400849ND
2012-06-05E120400820ND
2013-04-23E130202484ND
2013-04-23E130202511ND
2013-04-23E130202504ND
2013-04-23E130202513ND
2014-04-22E140308611ND
2014-04-22E140308602ND
2014-04-22E140308588ND
2014-04-22E140308577ND
2015-04-23VA010-DCLSND
2015-04-23VA010-DCLSND
2015-04-23VA010-DCLSND
2015-04-23VA010-DCLSND
2016-04-25E160305678ND
2016-04-25E160305662ND
2016-04-25E160305663ND
2016-04-25E160305651ND
2017-02-21E161203718ND
2017-02-21E161203728ND
2017-02-21E161203723ND
2017-04-19E170304720ND
2017-04-19E170304727ND
2017-04-19E170304728ND
2017-04-19E170304742ND