1,4-Dioxane
Fair Lawn Water Department
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 | 0.466 ppb | 14 | 5 | ND - 3.24 ppb |
| 2014 | ND | 2 | 0 | ND |
| 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 |
|---|---|---|
| 2013-01-29 | 703126-8016 | 3.24 ppb |
| 2013-01-29 | 703128-8063 | 0.229 ppb |
| 2013-01-29 | 703130-8099 | ND |
| 2013-05-28 | 721814-9012 | ND |
| 2013-05-28 | 721808-9012 | ND |
| 2013-05-28 | 721812-9012 | ND |
| 2013-07-30 | 734212-9446 | 2.67 ppb |
| 2013-07-30 | 734230-9446 | 0.140 ppb |
| 2013-07-30 | 734226-9446 | ND |
| 2013-08-27 | 740419-9737 | ND |
| 2013-08-27 | 740417-9737 | ND |
| 2013-11-26 | 760657-10399 | ND |
| 2013-11-26 | 760653-10399 | 0.256 ppb |
| 2013-11-26 | 760681-10399 | ND |
| 2014-02-25 | 772095-10856 | ND |
| 2014-02-25 | 772123-10856 | ND |