1,4-Dioxane
Bend 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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | ND | 1 | 0 | ND |
2014 | 0.00810 ppb | 21 | 1 | ND - 0.170 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 |
---|---|---|
2013-12-10 | 201312110810AM | ND |
2014-03-05 | 201403060267AM | ND |
2014-04-22 | 201404230502AM | ND |
2014-04-22 | 201404230508AM | ND |
2014-04-22 | 201404230406AM | ND |
2014-04-23 | 201404240320AM | ND |
2014-04-23 | 201404240484AM | ND |
2014-04-23 | 201404240551AM | ND |
2014-04-23 | 201404240309AM | ND |
2014-04-23 | 201404240322AM | ND |
2014-04-23 | 201404240335AM | ND |
2014-06-04 | 201406050155AM | ND |
2014-09-16 | 201409180256AM | ND |
2014-10-07 | 201410080594AM | ND |
2014-10-07 | 201410080553AM | ND |
2014-10-07 | 201410080465AM | ND |
2014-10-07 | 201410080558AM | 0.170 ppb |
2014-10-07 | 201410080411AM | ND |
2014-10-08 | 201410090280AM | ND |
2014-10-08 | 201410090244AM | ND |
2014-10-20 | 201410210306AM | ND |
2014-10-20 | 201410210282AM | ND |