Know Your Environment. Protect Your Health.

2,4-D

Marietta Public Works Authority

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.

 

26

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND80ND
2019ND60ND
2020ND30ND
2021ND30ND
2022ND30ND
2023ND30ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
2018-03-211803671ND
2018-03-211803672ND
2018-08-081808227ND
2018-08-081808228ND
2018-08-081808229ND
2018-12-051812117ND
2018-12-051812118ND
2018-12-051812116ND
2019-02-061902154ND
2019-02-061902153ND
2019-02-061902152ND
2019-06-051906166ND
2019-06-051906165ND
2019-06-051906164ND
2020-04-22100773-01ND
2020-04-22100774-01ND
2020-04-22100775-01ND
2021-04-14105829-01ND
2021-05-05106064-01ND
2021-05-05106065-01ND
2022-04-19111223-01ND
2022-05-04111422-01ND
2022-05-04111423-01ND
2023-05-17117054-01ND
2023-05-17117055-01ND
2023-05-17117056-01ND