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EWG's Tap Water Database — 2019 UPDATE

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1,4-Dioxane

Baton Rouge 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.

 

40

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
2014ND400ND
2015N/A00N/A
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
2014-05-0935137755003AMND
2014-05-0935137755011AMND
2014-05-0935137755009AMND
2014-05-0935137755005AMND
2014-05-0935137755007AMND
2014-05-0935137755015AMND
2014-05-0935137755019AMND
2014-05-0935137755013AMND
2014-05-1035137755001AMND
2014-05-1035137755017AMND
2014-05-1635138729003AMND
2014-05-1635138729005AMND
2014-05-1635138729007AMND
2014-05-1635138729001AMND
2014-05-1935138958003AMND
2014-05-1935138958001AMND
2014-05-2035139390005AMND
2014-05-2035139390007AMND
2014-05-2035139390001AMND
2014-05-2035139390003AMND
2014-11-0735163270001AMND
2014-11-0735163270005AMND
2014-11-0735163270007AMND
2014-11-0735163270003AMND
2014-11-0735163270011AMND
2014-11-0735163270041AMND
2014-11-0835163270009AMND
2014-11-0835163270047AMND
2014-11-1035163270031AMND
2014-11-1035163270025AMND
2014-11-1035163270023AMND
2014-11-1035163270029AMND
2014-11-1035163270027AMND
2014-11-1135163270037AMND
2014-11-1135163270039AMND
2014-11-1135163270035AMND
2014-11-1135163270045AMND
2014-11-1135163270043AMND
2014-11-1135163270033AMND
2014-12-0335166427001AMND