Know Your Environment. Protect Your Health.

1,4-Dioxane

Jennie Clarkson Home

1,4-Dioxane is a solvent classified by the EPA as a likely human carcinogen. It contaminates groundwater in many states due to industrial wastewater discharges, plastic manufacturing runoff and landfill runoff. Read More.

Animal studies show that 1,4-dioxane can target the liver, kidneys and respiratory system, and that prenatal exposure can harm the developing fetus. The State of California has set a Public Heatlh Goal of no more than 1 part per billion of 1,4-dioxane in drinking water. The state of Massachusetts sets a legal limit of 0.3 ppb, and New Hampshire's limit is 3 parts per billion. There is no national drinking water standard for this contaminant.

Click here to read more about 1,4-dioxane.

 

23

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019N/A00N/A
2020N/A00N/A
2021ND70ND
2022ND80ND
2023ND80ND

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

EWG Health Guideline: 0.35 ppb

The EWG Health Guideline of 0.35 ppb for 1,4-dioxane was defined by the Environmental Protection Agency as a one-in-a-million lifetime risk of cancer. Values greater than one-in-a-million cancer risk level can result in increased cancer cases above one in a million people.

ppb = parts per billion

All test results

Date Lab ID Result
2021-02-12L210710901-PFASND
2021-02-12L210710902-PFASND
2021-06-01L212915001-PFASND
2021-06-01L212915002-PFASND
2021-09-28L215269801-PFASND
2021-10-19L215729101-PFASND
2021-10-19L215729102-PFASND
2022-02-20L220912502-PFASND
2022-02-20L220912501-PFASND
2022-06-19L2232813-02-PFASND
2022-06-19L2232813-01-PFASND
2022-06-26L2234236-01-PFASND
2022-09-07L2248718-01-PFASND
2022-09-07L2248718-02-PFASND
2022-12-22L2272353-01-PFASND
2023-01-10L2301675-01-PFASND
2023-01-10L2301675-02-PFASND
2023-03-07L2312366-02-PFASND
2023-03-07L2312366-01-PFASND
2023-06-14L2335485-01-PFASND
2023-06-14L2335485-02-PFASND
2023-09-28L2358237-01-PFASND
2023-11-08CP44013-PFASND