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1,4-Dioxane

Warminster Municipal 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.

 

38

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2010N/A00N/A
2011N/A00N/A
2012N/A00N/A
20130.133 ppb189ND - 1.40 ppb
20140.103 ppb209ND - 1.20 ppb
2015N/A00N/A

ppb = parts per billion.

State and national drinking water standards and health guidelines

Health Guideline 0.35 ppb

The 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
2013-11-191059680022ND
2013-11-1910596800130.0700 ppb
2013-11-191059680001ND
2013-11-1910596800280.120 ppb
2013-11-1910596800190.170 ppb
2013-11-1910596800341.40 ppb
2013-11-191059680037ND
2013-11-1910596800070.0780 ppb
2013-11-1910596800040.1000 ppb
2013-11-1910596800250.130 ppb
2013-11-191059680031ND
2013-11-191059680049ND
2013-11-191059680052ND
2013-11-1910596800100.200 ppb
2013-11-1910596800430.130 ppb
2013-11-191059680046ND
2013-11-191059680040ND
2013-11-191059680016ND
2014-02-191072717001ND
2014-05-202008319016ND
2014-05-2020083190100.150 ppb
2014-05-202008319001ND
2014-05-2020083190070.0770 ppb
2014-05-2020083190040.0810 ppb
2014-05-2020083190190.150 ppb
2014-05-202008319031ND
2014-05-202008319040ND
2014-05-202008319046ND
2014-05-202008319043ND
2014-05-2020083190340.0700 ppb
2014-05-2020083190280.0730 ppb
2014-05-202008319022ND
2014-05-2020083190251.20 ppb
2014-05-202008319049ND
2014-05-202008319037ND
2014-05-2020083190130.0810 ppb
2014-06-0920116010010.170 ppb
2014-08-192024764001ND