1,4-Dioxane
City of Chandler
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 | 0.00522 ppb | 58 | 2 | ND - 0.230 ppb |
| 2015 | N/A | 0 | 0 | N/A |
| 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 |
|---|---|---|
| 2014-02-05 | 201402050171AM | ND |
| 2014-02-05 | 201402050165AM | ND |
| 2014-02-05 | 201402050167AM | ND |
| 2014-02-05 | 201402050163AM | ND |
| 2014-02-05 | 201402050169AM | ND |
| 2014-02-06 | 201402060569AM | ND |
| 2014-02-06 | 201402060575AM | ND |
| 2014-02-06 | 201402060573AM | ND |
| 2014-02-10 | 201402100062AM | ND |
| 2014-02-10 | 201402100064AM | ND |
| 2014-02-10 | 201402100066AM | ND |
| 2014-02-10 | 201402100060AM | ND |
| 2014-02-10 | 201402100058AM | ND |
| 2014-02-11 | 201402110263AM | ND |
| 2014-02-11 | 201402110265AM | ND |
| 2014-02-11 | 201402110253AM | ND |
| 2014-02-11 | 201402110267AM | ND |
| 2014-02-13 | 201402130306AM | ND |
| 2014-02-13 | 201402130304AM | ND |
| 2014-02-13 | 201402130310AM | ND |
| 2014-02-13 | 201402130308AM | ND |
| 2014-02-20 | 201402200405AM | ND |
| 2014-02-20 | 201402200403AM | ND |
| 2014-02-25 | 201402250318AM | ND |
| 2014-03-11 | 201403110371AM | ND |
| 2014-05-14 | 201405140565AM | ND |
| 2014-05-14 | 201405140563AM | ND |
| 2014-05-14 | 201405140561AM | ND |
| 2014-05-19 | 201405190041AM | ND |
| 2014-08-05 | 201408060511AM | ND |
| 2014-08-05 | 201408060509AM | 0.230 ppb |
| 2014-08-05 | 201408060492AM | ND |
| 2014-08-05 | 201408060490AM | ND |
| 2014-08-05 | 201408060513AM | ND |
| 2014-08-05 | 201408060507AM | ND |
| 2014-08-05 | 201408060488AM | ND |
| 2014-08-06 | 201408060535AM | ND |
| 2014-08-06 | 201408060537AM | ND |
| 2014-08-06 | 201408060539AM | 0.0730 ppb |
| 2014-08-06 | 201408060533AM | ND |
| 2014-08-07 | 201408070420AM | ND |
| 2014-08-07 | 201408070422AM | ND |
| 2014-08-07 | 201408070428AM | ND |
| 2014-08-07 | 201408070434AM | ND |
| 2014-08-07 | 201408070424AM | ND |
| 2014-08-07 | 201408070426AM | ND |
| 2014-08-07 | 201408070432AM | ND |
| 2014-08-07 | 201408070430AM | ND |
| 2014-08-11 | 201408110087AM | ND |
| 2014-08-11 | 201408110085AM | ND |
| 2014-08-12 | 201408120458AM | ND |
| 2014-08-12 | 201408120456AM | ND |
| 2014-08-12 | 201408120460AM | ND |
| 2014-08-12 | 201408120462AM | ND |
| 2014-11-06 | 201411070160AM | ND |
| 2014-11-06 | 201411070162AM | ND |
| 2014-11-06 | 201411070164AM | ND |
| 2014-12-18 | 201412180384AM | ND |