1,4-Dioxane
Great Oaks Water Company Inc.
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 |
---|---|---|---|---|
2014 | N/A | 0 | 0 | N/A |
2015 | ND | 26 | 0 | ND |
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 |
---|---|---|
2015-06-23 | 201504150041AM | ND |
2015-06-23 | 201504150040AM | ND |
2015-06-23 | 201504150045AM | ND |
2015-06-23 | 201504150043AM | ND |
2015-06-23 | 201504150044AM | ND |
2015-06-23 | 201504150031AM | ND |
2015-06-23 | 201504150034AM | ND |
2015-06-24 | 201504150042AM | ND |
2015-06-24 | 201504150036AM | ND |
2015-06-24 | 201504150039AM | ND |
2015-06-24 | 201504150035AM | ND |
2015-06-24 | 201504150037AM | ND |
2015-06-24 | 201504150032AM | ND |
2015-06-24 | 201504150033AM | ND |
2015-12-21 | 201510160022AM | ND |
2015-12-21 | 201510160020AM | ND |
2015-12-21 | 201510160019AM | ND |
2015-12-21 | 201510160029AM | ND |
2015-12-22 | 201510160018AM | ND |
2015-12-22 | 201510160030AM | ND |
2015-12-22 | 201510160023AM | ND |
2015-12-22 | 201510160031AM | ND |
2015-12-22 | 201510160025AM | ND |
2015-12-22 | 201510160027AM | ND |
2015-12-22 | 201510160026AM | ND |
2015-12-22 | 201510160028AM | ND |