1,4-Dioxane
Elsinore Valley Municipal Water District
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 |
---|---|---|---|---|
2013 | ND | 6 | 0 | ND |
2014 | ND | 8 | 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 |
---|---|---|
2013-09-19 | B3I1939-01 | ND |
2013-09-19 | B3I1939-10 | ND |
2013-09-19 | B3I1939-13 | ND |
2013-09-19 | B3I1939-04 | ND |
2013-09-19 | B3I1939-07 | ND |
2013-12-13 | B3L1343-01 | ND |
2014-03-20 | B4C2084-07 | ND |
2014-03-20 | B4C2084-04 | ND |
2014-03-20 | B4C2078-01 | ND |
2014-03-20 | B4C2084-01 | ND |
2014-06-19 | B4F2037-01 | ND |
2014-06-19 | B4F2037-04 | ND |
2014-09-29 | B4I2892-01 | ND |
2014-12-23 | B4L2627-01 | ND |