1,4-Dioxane
Tinker AFB Bio-env Eng
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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2013 | ND | 25 | 0 | ND |
| 2014 | ND | 1 | 0 | ND |
| 2015 | ND | 2 | 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 |
|---|---|---|
| 2013-02-06 | 3B06026-04 | ND |
| 2013-02-06 | 3B06026-07 | ND |
| 2013-02-21 | 3B21014-01RE | ND |
| 2013-03-05 | 3C05035-07 | ND |
| 2013-03-05 | 3C05035-13 | ND |
| 2013-03-05 | 3C05035-04 | ND |
| 2013-03-05 | 3C05035-10 | ND |
| 2013-03-19 | 3C19011-01 | ND |
| 2013-04-02 | 3D02034-07 | ND |
| 2013-04-02 | 3D02034-10 | ND |
| 2013-04-02 | 3D02034-01 | ND |
| 2013-04-02 | 3D02034-04 | ND |
| 2013-05-06 | 3E07033-01 | ND |
| 2013-08-08 | 3H08015-01A | ND |
| 2013-08-08 | 3H08015-07A | ND |
| 2013-08-08 | 3H08015-04A | ND |
| 2013-09-04 | 3I04039-10A | ND |
| 2013-09-04 | 3I04039-07A | ND |
| 2013-09-04 | 3I04039-01A | ND |
| 2013-09-04 | 3I04039-04A | ND |
| 2013-09-04 | 3I04039-13A | ND |
| 2013-10-08 | 3J08038-07A | ND |
| 2013-10-08 | 3J08038-04A | ND |
| 2013-10-08 | 3J08038-10A | ND |
| 2013-10-08 | 3J08038-01A | ND |
| 2014-08-26 | 4H26011-01 | ND |
| 2015-04-08 | 5D08025-01 | ND |
| 2015-08-04 | 5H04091-01 | ND |