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EWG's Tap Water Database — 2019 UPDATE

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1,4-Dioxane

City of Edmond - Arcadia Lake

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.

 

44

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
2013N/A00N/A
2014N/A00N/A
2015ND440ND
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

Date Lab ID Result
2015-01-065A06096-10ND
2015-01-065A06096-01ND
2015-01-065A06096-07ND
2015-01-065A06096-04ND
2015-01-065A06096-13ND
2015-01-065A06096-19ND
2015-01-065A06096-16ND
2015-01-075A07111-01ND
2015-01-075A07111-04ND
2015-01-075A07111-07ND
2015-01-075A07111-10ND
2015-01-205A20067-04ND
2015-01-205A20067-26ND
2015-01-205A20067-10ND
2015-01-205A20067-07AND
2015-01-205A20067-01ND
2015-01-205A20067-13ND
2015-01-215A21114-11ND
2015-01-215A21114-05ND
2015-01-215A21114-08ND
2015-01-215A21114-01ND
2015-04-065D06081-01ND
2015-07-075G07128-13ND
2015-07-075G07128-16ND
2015-07-075G07128-01ND
2015-07-075G07128-07ND
2015-07-075G07128-10ND
2015-07-075G07128-04ND
2015-07-085G08117-04ND
2015-07-085G08117-13ND
2015-07-085G08117-10ND
2015-07-085G08117-01ND
2015-07-085G08117-07ND
2015-07-215G21110-04ND
2015-07-215G21110-07ND
2015-07-215G21110-10ND
2015-07-215G21110-13ND
2015-07-215G21110-01ND
2015-07-215G21110-16ND
2015-07-225G22110-04ND
2015-07-225G22110-10ND
2015-07-225G22110-01ND
2015-07-225G22110-07ND
2015-10-065J06092-01ND