1,4-Dioxane
Gettysburg Municipal Authority
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 |
|---|---|---|---|---|
| 2015 | ND | 16 | 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 |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | N/A | 0 | 0 | N/A |
| 2023 | N/A | 0 | 0 | N/A |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
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 |
|---|---|---|
| 2015-03-10 | 2058890003 | ND |
| 2015-03-10 | 2058890006 | ND |
| 2015-03-10 | 2058890018 | ND |
| 2015-03-11 | 2058890013 | ND |
| 2015-03-12 | 2059263003 | ND |
| 2015-03-12 | 2059263008 | ND |
| 2015-03-18 | 2060100003 | ND |
| 2015-06-16 | 2077453003 | ND |
| 2015-09-14 | 2096141003 | ND |
| 2015-09-14 | 2096144003 | ND |
| 2015-09-15 | 2096138003 | ND |
| 2015-09-15 | 2096135003 | ND |
| 2015-09-21 | 2097507003 | ND |
| 2015-09-21 | 2097509003 | ND |
| 2015-09-22 | 2097508003 | ND |
| 2015-12-08 | 2112591003 | ND |