Know Your Environment. Protect Your Health.

1,4-Dioxane

Hynes Estates Mutual Water Company

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.

 

11

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND30ND
2020ND50ND
2021ND20ND
2022N/A00N/A
2023N/A00N/A

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
2018-01-04CA3000519_001_001-201801040900ND
2019-01-08CA3000519_001_001-201901081130ND
2019-07-10CA3000519_005_005-201907101130ND
2019-11-07CA3000519_005_005-201911071310ND
2020-02-04CA3000519_001_001-202002041125ND
2020-02-04CA3000519_005_005-202002041035ND
2020-05-05CA3000519_005_005-202005051010ND
2020-05-05CA3000519_001_001-202005051030ND
2020-07-07CA3000519_005_005-202007071000ND
2021-02-04CA3000519_001_001-202102041225ND
2021-02-04CA3000519_005_005-202102041240ND