Know Your Environment. Protect Your Health.

2,4-D

Valley Utilities Water Company Glendale

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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND80ND
2019N/A00N/A
2020N/A00N/A
2021ND80ND
2022ND40ND
2023N/A00N/A

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
2018-03-01201803010291SAND
2018-03-01201803010291SBND
2018-03-07201803070712SBND
2018-03-07201803070712SAND
2018-07-19201807190554SAND
2018-07-19201807190554SBND
2018-07-19201807190554SCND
2018-07-19201807190554SDND
2021-03-03202103040014SBND
2021-03-03202103040014SCND
2021-03-03202103040014SAND
2021-03-11202103120008SND
2021-04-14202104150273SAND
2021-04-14202104150273SBND
2021-04-14202104150273SCND
2021-04-14202104150273SDND
2022-02-02202202030108SND
2022-04-27202204280128SND
2022-07-07380-7658-1ND
2022-10-05380-23186-1ND