1,4-Dioxane
Warrington Twp Water&sew Dept
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 |
---|---|---|---|---|
2014 | 0.0831 ppb | 8 | 5 | ND - 0.176 ppb |
2015 | 0.0341 ppb | 9 | 3 | ND - 0.122 ppb |
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 |
---|---|---|
2014-11-11 | 830998-12850 | 0.0836 ppb |
2014-11-11 | 831004-12925 | 0.155 ppb |
2014-11-11 | 831012-12929 | ND |
2014-11-11 | 831016-12925 | 0.135 ppb |
2014-11-11 | 831014-12925 | 0.176 ppb |
2014-11-11 | 831008-12925 | ND |
2014-11-11 | 831006-12925 | 0.114 ppb |
2014-11-11 | 831002-12925 | ND |
2015-02-09 | 842481-13405 | ND |
2015-05-11 | 859204-14113 | ND |
2015-05-11 | 859198-14113 | 0.0908 ppb |
2015-05-11 | 859192-14113 | 0.0938 ppb |
2015-05-11 | 859208-14113 | 0.122 ppb |
2015-05-11 | 859202-14113 | ND |
2015-05-11 | 859200-14113 | ND |
2015-05-11 | 859194-14113 | ND |
2015-08-19 | 3305496 | ND |