1,4-Dioxane
Southern Utilities
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 |
|---|---|---|---|---|
| 2013 | ND | 46 | 0 | ND |
| 2014 | N/A | 0 | 0 | N/A |
| 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 |
|---|---|---|
| 2013-02-25 | 1302827-017C | ND |
| 2013-02-25 | 1302827-009C | ND |
| 2013-02-25 | 1302827-005C | ND |
| 2013-02-25 | 1302827-007C | ND |
| 2013-02-25 | 1302827-013C | ND |
| 2013-02-25 | 1302827-011C | ND |
| 2013-02-25 | 1302827-003C | ND |
| 2013-02-25 | 1302827-019C | ND |
| 2013-02-25 | 1302827-001C | ND |
| 2013-02-25 | 1302827-015C | ND |
| 2013-02-27 | 1302827-037C | ND |
| 2013-02-27 | 1302827-039C | ND |
| 2013-02-27 | 1302827-041C | ND |
| 2013-02-28 | 1302827-065C | ND |
| 2013-02-28 | 1302827-053C | ND |
| 2013-02-28 | 1302827-051C | ND |
| 2013-02-28 | 1302827-059C | ND |
| 2013-02-28 | 1302827-055C | ND |
| 2013-02-28 | 1302827-069C | ND |
| 2013-02-28 | 1302827-057C | ND |
| 2013-02-28 | 1302827-063C | ND |
| 2013-02-28 | 1302827-067C | ND |
| 2013-02-28 | 1302827-061C | ND |
| 2013-08-26 | Q1306115015 | ND |
| 2013-08-26 | Q1306115011 | ND |
| 2013-08-26 | Q1306115007 | ND |
| 2013-08-26 | Q1306115009 | ND |
| 2013-08-26 | Q1306115005 | ND |
| 2013-08-26 | Q1306115001 | ND |
| 2013-08-26 | Q1306115037 | ND |
| 2013-08-26 | Q1306115013 | ND |
| 2013-08-26 | Q1306115003 | ND |
| 2013-08-27 | Q1306115039 | ND |
| 2013-08-27 | Q1306115057 | ND |
| 2013-08-27 | Q1306115045 | ND |
| 2013-08-27 | Q1306115063 | ND |
| 2013-08-27 | Q1306115047 | ND |
| 2013-08-27 | Q1306115065 | ND |
| 2013-08-27 | Q1306115041 | ND |
| 2013-08-27 | Q1306115059 | ND |
| 2013-08-27 | Q1306115053 | ND |
| 2013-08-27 | Q1306115051 | ND |
| 2013-08-27 | Q1306115043 | ND |
| 2013-08-27 | Q1306115055 | ND |
| 2013-08-27 | Q1306115049 | ND |
| 2013-08-27 | Q1306115061 | ND |