Know Your Environment. Protect Your Health.

1,4-Dioxane

Mayfield

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.

 

16

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
2021ND60ND
2022ND80ND
2023ND20ND

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
2021-01-18JH2100417-A-PFOAND
2021-01-18JH2100417-B-PFOAND
2021-05-14JH2103553-PFOAND
2021-05-14JH2103554-PFOAND
2021-09-10JH2108190-PFOAND
2021-09-10JH2108191-PFOAND
2022-03-28JH2202332-DIOXANEND
2022-03-28JH2202333-DIOXANEND
2022-05-31JH2204107-DIOXANEND
2022-05-31JH2204108-DIOXANEND
2022-08-26JH2207425-DIOXANEND
2022-08-26JH2207424-DIOXANEND
2022-11-14JH2209835-DIOXANEND
2022-11-14JH2209836-DIOXANEND
2023-03-17JH2301973-DIOXANEND
2023-03-17JH2301974-DIOXANEND