1,4-Dioxane
Municipality of Anchorage
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | N/A | 0 | 0 | N/A |
2015 | ND | 28 | 0 | ND |
2016 | N/A | 0 | 0 | N/A |
2017 | N/A | 0 | 0 | N/A |
2018 | N/A | 0 | 0 | N/A |
2019 | N/A | 0 | 0 | N/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 |
---|---|---|
2015-03-02 | 3198295 | ND |
2015-03-02 | 3198283 | ND |
2015-03-02 | 3198265 | ND |
2015-03-02 | 3198253 | ND |
2015-03-03 | 3199562 | ND |
2015-03-03 | 3199483 | ND |
2015-03-03 | 3199573 | ND |
2015-03-03 | 3199505 | ND |
2015-03-03 | 3199531 | ND |
2015-03-03 | 3199494 | ND |
2015-03-13 | 3206987 | ND |
2015-03-13 | 3206969 | ND |
2015-06-12 | 3262415 | ND |
2015-06-24 | 3269662 | ND |
2015-09-16 | 3324833 | ND |
2015-09-16 | 3324817 | ND |
2015-09-16 | 3324901 | ND |
2015-09-16 | 3324886 | ND |
2015-09-16 | 3324797 | ND |
2015-09-16 | 3324852 | ND |
2015-09-23 | 3329729 | ND |
2015-09-23 | 3329777 | ND |
2015-09-23 | 3329753 | ND |
2015-10-30 | 3351049 | ND |
2015-10-30 | 3351038 | ND |
2015-10-30 | 3351067 | ND |
2015-12-15 | 3375760 | ND |
2015-12-15 | 3375809 | ND |