1,4-Dioxane
Moore
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 | 20 | 0 | ND |
| 2014 | ND | 20 | 0 | ND |
| 2015 | ND | 3 | 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 |
|---|---|---|
| 2013-10-09 | 3J10006-46A | ND |
| 2013-10-09 | 3J10006-49A | ND |
| 2013-10-09 | 3J10006-58A | ND |
| 2013-10-09 | 3J10006-55A | ND |
| 2013-10-09 | 3J10006-40A | ND |
| 2013-10-09 | 3J10006-43A | ND |
| 2013-10-09 | 3J10006-52A | ND |
| 2013-10-09 | 3J10006-37A | ND |
| 2013-10-09 | 3J10006-19A | ND |
| 2013-10-09 | 3J10006-22A | ND |
| 2013-10-09 | 3J10006-25A | ND |
| 2013-10-09 | 3J10006-13A | ND |
| 2013-10-09 | 3J10006-16A | ND |
| 2013-10-09 | 3J10006-34A | ND |
| 2013-10-09 | 3J10006-04A | ND |
| 2013-10-09 | 3J10006-01A | ND |
| 2013-10-09 | 3J10006-28A | ND |
| 2013-10-09 | 3J10006-10A | ND |
| 2013-10-09 | 3J10006-31A | ND |
| 2013-10-09 | 3J10006-07A | ND |
| 2014-04-07 | 4D08021-01 | ND |
| 2014-04-07 | 4D08021-04 | ND |
| 2014-04-08 | 4D09016-07 | ND |
| 2014-04-08 | 4D09016-04 | ND |
| 2014-04-08 | 4D09016-01 | ND |
| 2014-04-09 | 4D10050-01 | ND |
| 2014-04-09 | 4D10050-19 | ND |
| 2014-04-09 | 4D10050-43 | ND |
| 2014-04-09 | 4D10050-22 | ND |
| 2014-04-09 | 4D10050-07 | ND |
| 2014-04-09 | 4D10050-04 | ND |
| 2014-04-09 | 4D10050-31 | ND |
| 2014-04-09 | 4D10050-16 | ND |
| 2014-04-09 | 4D10050-37 | ND |
| 2014-04-09 | 4D10050-40 | ND |
| 2014-04-09 | 4D10050-34 | ND |
| 2014-04-09 | 4D10050-28 | ND |
| 2014-04-09 | 4D10050-10 | ND |
| 2014-04-09 | 4D10050-13 | ND |
| 2014-04-09 | 4D10050-25 | ND |
| 2015-12-07 | 5L08160-04 | ND |
| 2015-12-07 | 5L08160-07 | ND |
| 2015-12-07 | 5L08160-01 | ND |