Know Your Environment. Protect Your Health.

2,4-D

Windmill Ranch Subdivision

NOTE: Windmill Ranch Subdivision purchases water from Clwsc Canyon Lake Shores which is required to test for 2,4-d. Sample information shown below was taken by Clwsc Canyon Lake Shores.

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.

 

39

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND70ND
2020ND30ND
2021ND20ND
2022ND60ND
2023ND100ND

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: Windmill Ranch Subdivision purchases water from Clwsc Canyon Lake Shores which is required to test for 2,4-d. Sample information shown below was taken by Clwsc Canyon Lake Shores.

Date Lab ID Result
2018-02-07AE12824ND
2018-05-16AE26630ND
2018-07-26AE34728ND
2018-11-06AE45470ND
2019-02-06AE53256ND
2019-02-06AE53257ND
2019-02-06AE53263ND
2019-04-23AE63411ND
2019-10-30AE88024ND
2019-10-30AE88025ND
2019-10-30AE88026ND
2020-03-17AF03352ND
2020-03-17AF03355ND
2020-03-17AF03354ND
2020-03-17AF03353ND
2020-06-16AF15653ND
2020-10-14AF30675ND
2020-10-14AF30677ND
2021-03-11AF46613ND
2021-04-21AF50967ND
2021-08-24AF67782ND
2021-08-24AF67781ND
2021-11-30AF77558ND
2022-02-07AF83476ND
2022-02-07AF83477ND
2022-04-11AF92725ND
2022-06-22AG02016ND
2022-08-23AG10611ND
2022-08-23AG10619ND
2023-02-08AG28101ND
2023-02-08AG28107ND
2023-04-12AG36615ND
2023-06-07AG43591ND
2023-06-07AG43592ND
2023-09-12AG55849ND
2023-09-28AG57981ND
2023-11-09AG63112ND
2023-11-09AG63113ND
2023-12-20AG67200ND