Know Your Environment. Protect Your Health.

2,4-D

Bryan County Rural Water, Sewer & Solid Waste Management District #2

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.

 

25

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
20190.150 ppb61ND - 0.900 ppb
20200.0425 ppb41ND - 0.170 ppb
20210.0880 ppb52ND - 0.310 ppb
20220.138 ppb41ND - 0.550 ppb
20230.353 ppb42ND - 0.940 ppb

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
2018-08-2918081323ND
2018-12-191812500ND
2019-02-061902151ND
2019-03-1319033840.900 ppb
2019-04-171904501ND
2019-09-181909634ND
2019-11-061911119ND
2019-12-181912629ND
2020-02-1920025120.170 ppb
2020-06-17101545-01ND
2020-07-22102000-01ND
2020-10-21103377-01ND
2021-02-17104910-01ND
2021-03-17105439-01ND
2021-04-21105920-010.130 ppb
2021-07-14107198-010.310 ppb
2021-10-20108718-01ND
2022-01-12109841-01ND
2022-04-26111338-010.550 ppb
2022-07-20112533-01ND
2022-10-19113945-01ND
2023-01-04114931-01ND
2023-04-05116303-010.470 ppb
2023-07-12117946-010.940 ppb
2023-10-04119263-01ND