1,4-Dioxane
Acton MUD
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 |
|---|---|---|---|---|
| 2014 | ND | 32 | 0 | ND |
| 2015 | ND | 1 | 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 |
|---|---|---|
| 2014-06-24 | Q1423165011 | ND |
| 2014-06-24 | Q1423165017 | ND |
| 2014-06-24 | Q1423165015 | ND |
| 2014-06-24 | Q1423165021 | ND |
| 2014-06-24 | Q1423165019 | ND |
| 2014-06-24 | Q1423165009 | ND |
| 2014-06-24 | Q1423165007 | ND |
| 2014-06-24 | Q1423165013 | ND |
| 2014-06-24 | Q1423165025 | ND |
| 2014-06-24 | Q1423165023 | ND |
| 2014-06-24 | Q1423165029 | ND |
| 2014-06-24 | Q1423165003 | ND |
| 2014-06-24 | Q1423165001 | ND |
| 2014-06-24 | Q1423165027 | ND |
| 2014-07-08 | Q1426475001 | ND |
| 2014-09-24 | Q1447340001 | ND |
| 2014-12-08 | Q1458812011 | ND |
| 2014-12-08 | Q1458812003 | ND |
| 2014-12-08 | Q1458812019 | ND |
| 2014-12-08 | Q1458812017 | ND |
| 2014-12-08 | Q1458812007 | ND |
| 2014-12-08 | Q1458812009 | ND |
| 2014-12-08 | Q1458812025 | ND |
| 2014-12-08 | Q1458812021 | ND |
| 2014-12-08 | Q1458812023 | ND |
| 2014-12-08 | Q1458812001 | ND |
| 2014-12-08 | Q1458812015 | ND |
| 2014-12-08 | Q1458812013 | ND |
| 2014-12-08 | Q1458812005 | ND |
| 2014-12-08 | Q1458812029 | ND |
| 2014-12-08 | Q1458812031 | ND |
| 2014-12-08 | Q1458812027 | ND |
| 2015-03-17 | Q1509744001 | ND |