Know Your Environment. Protect Your Health.

2,4-D

Rra Arrowhead Lake Lots

NOTE: Rra Arrowhead Lake Lots purchases water from City of Wichita Falls which is required to test for 2,4-d. Sample information shown below was taken by City of Wichita Falls.

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.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND10ND
2020ND40ND
2021ND20ND
2022ND10ND
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: Rra Arrowhead Lake Lots purchases water from City of Wichita Falls which is required to test for 2,4-d. Sample information shown below was taken by City of Wichita Falls.

Date Lab ID Result
2018-11-14Q1846491007ND
2019-08-19Q1956634006ND
2020-02-25Q2006937003ND
2020-06-02Q2021821001ND
2020-09-03Q2035218003ND
2020-11-10Q2044047011ND
2021-02-03Q2103346009ND
2021-08-16Q2121825007ND
2022-08-17Q2224340013ND
2023-08-21Q2335127016ND