1,4-Dioxane
Baton Rouge Water Company
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 | ND | 40 | 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 |
|---|---|---|
| 2014-05-09 | 35137755015AM | ND |
| 2014-05-09 | 35137755003AM | ND |
| 2014-05-09 | 35137755011AM | ND |
| 2014-05-09 | 35137755009AM | ND |
| 2014-05-09 | 35137755019AM | ND |
| 2014-05-09 | 35137755007AM | ND |
| 2014-05-09 | 35137755013AM | ND |
| 2014-05-09 | 35137755005AM | ND |
| 2014-05-10 | 35137755017AM | ND |
| 2014-05-10 | 35137755001AM | ND |
| 2014-05-16 | 35138729005AM | ND |
| 2014-05-16 | 35138729007AM | ND |
| 2014-05-16 | 35138729003AM | ND |
| 2014-05-16 | 35138729001AM | ND |
| 2014-05-19 | 35138958001AM | ND |
| 2014-05-19 | 35138958003AM | ND |
| 2014-05-20 | 35139390001AM | ND |
| 2014-05-20 | 35139390007AM | ND |
| 2014-05-20 | 35139390005AM | ND |
| 2014-05-20 | 35139390003AM | ND |
| 2014-11-07 | 35163270003AM | ND |
| 2014-11-07 | 35163270041AM | ND |
| 2014-11-07 | 35163270001AM | ND |
| 2014-11-07 | 35163270005AM | ND |
| 2014-11-07 | 35163270007AM | ND |
| 2014-11-07 | 35163270011AM | ND |
| 2014-11-08 | 35163270009AM | ND |
| 2014-11-08 | 35163270047AM | ND |
| 2014-11-10 | 35163270027AM | ND |
| 2014-11-10 | 35163270023AM | ND |
| 2014-11-10 | 35163270029AM | ND |
| 2014-11-10 | 35163270031AM | ND |
| 2014-11-10 | 35163270025AM | ND |
| 2014-11-11 | 35163270039AM | ND |
| 2014-11-11 | 35163270037AM | ND |
| 2014-11-11 | 35163270035AM | ND |
| 2014-11-11 | 35163270045AM | ND |
| 2014-11-11 | 35163270043AM | ND |
| 2014-11-11 | 35163270033AM | ND |
| 2014-12-03 | 35166427001AM | ND |