Know Your Environment. Protect Your Health.

1,4-Dioxane

Woodbury City Water Department

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.

 

39

Samples

0

Samples exceeding legal limit (MCL)

29

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20130.201 ppb95ND - 0.789 ppb
2014ND10ND
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
20180.810 ppb110.810 ppb
20190.681 ppb1211ND - 0.810 ppb
20200.648 ppb660.530 ppb - 0.770 ppb
20210.363 ppb43ND - 0.530 ppb
20220.675 ppb660.600 ppb - 0.800 ppb
2023N/A00N/A

ppb = parts per billion

State, National, and Health Guidelines for Drinking Water

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
2013-05-13719534-89410.709 ppb
2013-05-13719530-8941ND
2013-05-13719532-8941ND
2013-05-13719522-8960ND
2013-08-07736146-9560ND
2013-11-14759224-103390.117 ppb
2013-11-14759226-103390.789 ppb
2013-11-14759222-103390.118 ppb
2013-11-14759178-103390.0745 ppb
2014-02-11770212-10747ND
2018-10-2441006340.810 ppb
2019-01-1641762230.810 ppb
2019-01-1641762220.770 ppb
2019-01-1641762210.810 ppb
2019-04-1042638760.650 ppb
2019-04-104263875ND
2019-04-1042638740.640 ppb
2019-07-1743569430.770 ppb
2019-07-1743569420.760 ppb
2019-07-1743569410.780 ppb
2019-10-0944569200.720 ppb
2019-10-0944569220.690 ppb
2019-10-0944569210.770 ppb
2020-01-2145461090.770 ppb
2020-01-2145461070.760 ppb
2020-01-2145461080.690 ppb
2020-04-1746126650.570 ppb
2020-04-1746126660.530 ppb
2020-04-1746126670.570 ppb
2021-07-1349569750.530 ppb
2021-07-134956976ND
2021-10-06630-22836-10.530 ppb
2021-10-06630-22836-20.390 ppb
2022-02-23630-27776-20.780 ppb
2022-02-23630-27776-10.640 ppb
2022-02-23630-27776-30.630 ppb
2022-04-26630-32054-30.800 ppb
2022-04-26630-32054-20.600 ppb
2022-04-26630-32054-10.600 ppb