Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

1,4-Dioxane

Moore County Public Util. - Pinehurst

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.

MORE ABOUT THIS CONTAMINANT

 

41

Samples

0

Samples exceeding legal limit (MCL)

4

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20130.774 ppb414ND - 12.0 ppb
2014N/A00N/A
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A

ppb = parts per billion

State and national drinking water standards and health guidelines

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
2013-02-26201302280397AMND
2013-02-26201302280379AMND
2013-02-26201302280404AMND
2013-02-26201302280394AMND
2013-02-27201302280373AMND
2013-02-27201302280385AMND
2013-02-27201302280387AMND
2013-02-27201303010370AMND
2013-02-27201302280390AMND
2013-02-27201302280402AMND
2013-02-27201302280392AMND
2013-02-27201303010360AMND
2013-02-27201302280375AMND
2013-02-27201302280377AMND
2013-02-27201302280415AMND
2013-02-28201303010376AMND
2013-02-28201303010354AMND
2013-02-28201303010356AM9.23 ppb
2013-03-19201303200285AMND
2013-05-15201305170382AMND
2013-05-16201305170365AM3.90 ppb
2013-08-27201308280186AMND
2013-08-27201308280202AMND
2013-08-27201308280135AMND
2013-08-29201308300197AMND
2013-08-29201308300192AMND
2013-08-29201308300146AMND
2013-08-29201308300199AMND
2013-09-03201309040316AMND
2013-09-03201309040306AMND
2013-09-03201309040308AMND
2013-09-03201309040329AMND
2013-09-09201309100276AMND
2013-09-09201309100216AMND
2013-09-10201309110516AMND
2013-09-12201309130560AMND
2013-09-25201309270077AM6.60 ppb
2013-09-26201309270081AMND
2013-09-26201309270079AMND
2013-11-26201311270049AMND
2013-11-26201311270062AM12.0 ppb