Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

1,4-Dioxane

City of Alexandria

NOTE: City of Alexandria purchases water from Fairfax County Water Authority which is required to test for 1,4-dioxane. Sample information shown below was taken by Fairfax County Water Authority.

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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013ND100ND
2014ND30ND
2015ND10ND
2016N/A00N/A
2017N/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

NOTE: City of Alexandria purchases water from Fairfax County Water Authority which is required to test for 1,4-dioxane. Sample information shown below was taken by Fairfax County Water Authority.

Date Lab ID Result
2013-07-17201307180824AMND
2013-07-17201307180811AMND
2013-07-17201307180820AMND
2013-07-17201307180822AMND
2013-07-17201307180828AMND
2013-10-15201310160176AMND
2013-10-15201310160200AMND
2013-10-15201310160208AMND
2013-10-15201310160171AMND
2013-10-15201310160210AMND
2014-01-13201401140197AMND
2014-01-13201401150723AMND
2014-01-13201401150621AMND
2014-01-13201401140199AMND
2014-01-14201401150684AMND
2014-04-14201404150219AMND
2014-04-14201404150439AMND
2014-04-14201404150441AMND
2014-04-14201404150283AMND
2014-04-14201404150405AMND