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EWG's Tap Water Database — 2021 UPDATE

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2,4-D

Midwest City

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.

 

66

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018ND420ND
2019ND240ND

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
2018-03-26AC27032-09ND
2018-03-26AC27032-08ND
2018-03-26AC27032-07ND
2018-03-26AC27032-06ND
2018-03-26AC27032-05ND
2018-03-26AC27032-04ND
2018-03-26AC27032-03ND
2018-03-26AC27032-02ND
2018-03-26AC27032-01ND
2018-06-18AF19074-05ND
2018-06-18AF19074-01ND
2018-06-18AF19074-02ND
2018-06-18AF19074-03ND
2018-06-18AF19074-04ND
2018-06-18AF19074-06ND
2018-06-18AF19074-07ND
2018-06-18AF19074-08ND
2018-06-18AF19074-09ND
2018-06-18AF19074-10ND
2018-06-18AF19074-11ND
2018-08-21AH22077-08ND
2018-08-21AH22077-01ND
2018-08-21AH22077-02ND
2018-08-21AH22077-03ND
2018-08-21AH22077-04ND
2018-08-21AH22077-05ND
2018-08-21AH22077-06ND
2018-08-21AH22077-07ND
2018-08-21AH22077-09ND
2018-08-21AH22077-10ND
2018-09-04AI05090-01ND
2018-10-29AJ30053-05ND
2018-10-29AJ30053-04ND
2018-10-29AJ30053-03ND
2018-10-29AJ30052-01ND
2018-10-29AJ30052-02ND
2018-10-29AJ30052-03ND
2018-10-29AJ30052-04ND
2018-10-29AJ30052-05ND
2018-10-29AJ30052-06ND
2018-10-29AJ30053-01ND
2018-10-29AJ30053-02ND
2019-01-15BA15045-01ND
2019-02-25BB26050-07ND
2019-02-25BB26050-01ND
2019-02-25BB26050-02ND
2019-02-25BB26050-03ND
2019-02-25BB26050-04ND
2019-02-25BB26050-05ND
2019-02-25BB26050-06ND
2019-02-25BB26050-08ND
2019-02-25BB26050-09ND
2019-02-25BB26050-10ND
2019-02-25BB26050-11ND
2019-02-25BB26059-01ND
2019-10-28BJ29019-10ND
2019-10-28BJ29019-09ND
2019-10-28BJ29019-08ND
2019-10-28BJ29019-07ND
2019-10-28BJ29019-06ND
2019-10-28BJ29019-05ND
2019-10-28BJ29019-04ND
2019-10-28BJ29019-03ND
2019-10-28BJ29019-02ND
2019-10-28BJ29019-01ND
2019-12-09BL10033-01ND