1,4-Dioxane
Desert Water Agency
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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2014 | ND | 20 | 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 |
---|---|---|
2014-03-17 | 201403190408AM | ND |
2014-03-17 | 201403190404AM | ND |
2014-03-17 | 201403190412AM | ND |
2014-03-17 | 201403190406AM | ND |
2014-03-17 | 201403190414AM | ND |
2014-03-17 | 201403190410AM | ND |
2014-03-17 | 201403190389AM | ND |
2014-03-17 | 201403190391AM | ND |
2014-06-16 | 201406180478AM | ND |
2014-06-16 | 201406180476AM | ND |
2014-09-15 | 201409170338AM | ND |
2014-09-15 | 201409170348AM | ND |
2014-09-16 | 201409170332AM | ND |
2014-09-16 | 201409170330AM | ND |
2014-09-16 | 201409170334AM | ND |
2014-09-16 | 201409170336AM | ND |
2014-09-16 | 201409170328AM | ND |
2014-10-06 | 201410071169AM | ND |
2014-12-16 | 201412170215AM | ND |
2014-12-16 | 201412170213AM | ND |