1,4-Dioxane
El Paso Water 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.
Testing results - average by year
Year | Average result | Samples taken | Detections | Range of results |
---|---|---|---|---|
2013 | 0.0109 ppb | 38 | 4 | ND - 0.170 ppb |
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 |
---|---|---|
2013-05-07 | 1305232-001F | ND |
2013-05-07 | 1305228-001F | ND |
2013-05-07 | 1305229-001F | ND |
2013-05-07 | 1305230-001F | ND |
2013-05-07 | 1305231-001F | 0.0770 ppb |
2013-05-08 | 1305294-001F | ND |
2013-05-08 | 1305295-001F | ND |
2013-05-08 | 1305297-001F | ND |
2013-05-08 | 1305299-001F | ND |
2013-05-08 | 1305298-001F | ND |
2013-05-09 | 1305296-001F | ND |
2013-05-14 | 1305449-001F | ND |
2013-05-14 | 1305448-001F | ND |
2013-05-15 | 1305492-001F | ND |
2013-05-15 | 1305490-001F | 0.0920 ppb |
2013-05-15 | 1305493-001F | ND |
2013-05-15 | 1305489-001F | ND |
2013-05-15 | 1305491-001F | ND |
2013-05-21 | 1305665-001F | ND |
2013-11-12 | 1311393-001F | ND |
2013-11-12 | 1311396-001F | ND |
2013-11-12 | 1311395-001F | ND |
2013-11-12 | 1311392-001F | ND |
2013-11-12 | 1311391-001F | ND |
2013-11-12 | 1311394-001F | ND |
2013-11-12 | 1311397-001F | 0.0750 ppb |
2013-11-13 | 1311491-001F | ND |
2013-11-13 | 1311490-001F | ND |
2013-11-13 | 1311492-001F | ND |
2013-11-19 | 1311634-001F | ND |
2013-11-19 | 1311633-001F | ND |
2013-11-20 | 1311724-001F | ND |
2013-11-20 | 1311723-001F | ND |
2013-11-20 | 1311727-001F | ND |
2013-11-20 | 1311725-001F | ND |
2013-11-20 | 1311726-001F | ND |
2013-11-20 | 1311721-001F | 0.170 ppb |
2013-11-21 | 1311722-001F | ND |