Know Your Environment. Protect Your Health.

2,4-D

Nash Forreston Water Supply Corporation

NOTE: Nash Forreston Water Supply Corporation purchases water from City of Waxahachie which is required to test for 2,4-d. Sample information shown below was taken by City of Waxahachie.

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.

 

8

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND20ND
2019ND20ND
2020ND10ND
2021ND20ND
2022ND20ND
2023ND10ND

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

NOTE: Nash Forreston Water Supply Corporation purchases water from City of Waxahachie which is required to test for 2,4-d. Sample information shown below was taken by City of Waxahachie.

Date Lab ID Result
2018-01-25Q1802982016ND
2019-04-29Q1916965003ND
2019-04-29Q1916965013ND
2020-08-17Q2032738003ND
2021-09-16Q2125453003ND
2022-01-12Q2201052013ND
2022-01-12Q2201052018ND
2023-11-20Q2349758009ND