Know Your Environment. Protect Your Health.

2,4-D

Markridge Park Subdivision Water System

NOTE: Markridge Park Subdivision Water System purchases water from City of Carencro Water System which is required to test for 2,4-d. Sample information shown below was taken by City of Carencro Water System.

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.

 

18

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND40ND
2019ND40ND
2020ND60ND
2021ND20ND
2022ND20ND
2023ND20ND

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: Markridge Park Subdivision Water System purchases water from City of Carencro Water System which is required to test for 2,4-d. Sample information shown below was taken by City of Carencro Water System.

Date Lab ID Result
2019-02-1835449820002ND
2019-02-1835449820001ND
2019-02-1835449820002ND
2019-02-1835449820001ND
2020-04-1335543759004ND
2020-04-1335543759003ND
2020-04-1335543759002ND
2020-04-1335543759001ND
2020-12-0735597474002ND
2020-12-0735597474001ND
2021-08-0335653200001ND
2021-08-0335653200002ND
2021-11-1635678714004ND
2021-11-1635678714005ND
2022-03-2135705902004ND
2022-03-2135705902005ND
2023-03-1335786267001ND
2023-03-1335786267002ND