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EWG's Tap Water Database — 2019 UPDATE

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1,4-Dioxane

NJ American Water - Atlantic County

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.

 

47

Samples

0

Samples exceeding legal limit (MCL)

2

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
20140.0875 ppb2411ND - 0.360 ppb
2015N/A00N/A
20160.101 ppb84ND - 0.310 ppb
20170.125 ppb159ND - 0.360 ppb

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
2014-01-1424539901ND
2014-01-14245400010.360 ppb
2014-01-1424543801ND
2014-01-1424539801ND
2014-01-15245402010.170 ppb
2014-01-15245439010.150 ppb
2014-01-1524540101ND
2014-01-1524540401ND
2014-01-29245403010.220 ppb
2014-07-01261771010.170 ppb
2014-07-01261718010.210 ppb
2014-07-0126171601ND
2014-07-0726171201ND
2014-07-07261713010.200 ppb
2014-07-0826171901ND
2014-07-0826177001ND
2014-07-0826176901ND
2014-07-09261706010.0700 ppb
2014-07-09261768010.180 ppb
2014-07-0926171401ND
2014-07-15261721010.160 ppb
2014-07-1526170701ND
2014-07-16261715010.210 ppb
2014-08-0526170801ND
2016-07-28330345010.130 ppb
2016-07-2833034601ND
2016-07-28330347010.310 ppb
2016-07-28330344010.0800 ppb
2016-10-0633648201ND
2016-10-0633648301ND
2016-10-0633648101ND
2016-10-27336485010.290 ppb
2017-01-31344256010.250 ppb
2017-01-31344262010.200 ppb
2017-03-2434425901ND
2017-05-3135317901ND
2017-05-31355837010.0800 ppb
2017-05-31353178010.230 ppb
2017-05-31353182010.280 ppb
2017-07-1736470701ND
2017-07-1736470501ND
2017-07-17364709010.220 ppb
2017-07-2736803401ND
2017-10-02374865010.360 ppb
2017-10-02374869010.0700 ppb
2017-10-02374862010.180 ppb
2017-10-0237486301ND