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EWG's Tap Water Database — 2019 UPDATE

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2,4-D

Doyon Utilities Jber - Richardson

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.

 

33

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND160ND
2013N/A00N/A
2014N/A00N/A
2015ND120ND
2016ND10ND
2017ND40ND

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
2012-01-23PE*2581088ND
2012-01-23PE*2581102ND
2012-01-23PE*2581110ND
2012-01-23PE*2581112ND
2012-01-23PE*2581075ND
2012-04-23PE*2629744ND
2012-04-23PE*2629760ND
2012-04-23PE*2629781ND
2012-04-23PE*2629806ND
2012-07-24PE*2682051ND
2012-07-24PE*2682123ND
2012-07-24PE*2682076ND
2012-11-26PE*2745625ND
2012-11-26PE*2745639ND
2012-11-26PE*2745649ND
2012-11-26PE*2745659ND
2015-02-24PE*3195306ND
2015-02-24PE*3195670ND
2015-02-24PE*3195337ND
2015-06-23PE*3268439ND
2015-06-23PE*3268596ND
2015-06-23PE*3268611ND
2015-09-14PE*3322323ND
2015-09-14PE*3322334ND
2015-09-14PE*3322351ND
2015-12-07PE*3371142ND
2015-12-07PE*3371155ND
2015-12-07PE*3371165ND
2016-03-29PE*3422156ND
2017-03-06PE*3649756ND
2017-05-22PE*3698682ND
2017-08-28PE*3767826ND
2017-10-11PE*3797938ND