1,4-Dioxane
East Valley 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 |
---|---|---|---|---|
2014 | ND | 36 | 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 |
---|---|---|
2014-02-05 | B4B0490-03 | ND |
2014-02-05 | B4B0490-01 | ND |
2014-02-10 | B4B0801-03 | ND |
2014-02-10 | B4B0801-01 | ND |
2014-02-13 | B4B1374-05 | ND |
2014-02-13 | B4B1374-03 | ND |
2014-02-13 | B4B1374-01 | ND |
2014-02-20 | B4B1932-09 | ND |
2014-02-20 | B4B1932-11 | ND |
2014-02-25 | B4B2210-01 | ND |
2014-02-25 | B4B2210-07 | ND |
2014-02-25 | B4B2210-05 | ND |
2014-02-25 | B4B2210-03 | ND |
2014-02-26 | B4B2332-01 | ND |
2014-02-26 | B4B2332-05 | ND |
2014-02-26 | B4B2332-03 | ND |
2014-05-20 | B4E1846-01 | ND |
2014-05-22 | B4E2247-01 | ND |
2014-08-07 | B4H0656-05 | ND |
2014-08-07 | B4H0656-03 | ND |
2014-08-07 | B4H0656-01 | ND |
2014-08-14 | B4H1446-01 | ND |
2014-08-14 | B4H1446-11 | ND |
2014-08-14 | B4H1446-05 | ND |
2014-08-14 | B4H1446-03 | ND |
2014-08-14 | B4H1446-09 | ND |
2014-08-14 | B4H1446-07 | ND |
2014-08-21 | B4H2206-05 | ND |
2014-08-21 | B4H2206-07 | ND |
2014-08-21 | B4H2206-03 | ND |
2014-08-21 | B4H2206-01 | ND |
2014-08-28 | B4H2879-05 | ND |
2014-08-28 | B4H2879-03 | ND |
2014-08-28 | B4H2879-01 | ND |
2014-08-28 | B4H2879-07 | ND |
2014-11-14 | B4K1386-01 | ND |