1,4-Dioxane
Aqua NJ - Blackwood
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 | 0.0522 ppb | 9 | 1 | ND - 0.470 ppb |
| 2014 | ND | 13 | 0 | ND |
| 2015 | N/A | 0 | 0 | N/A |
| 2016 | 0.435 ppb | 2 | 2 | 0.370 ppb - 0.500 ppb |
| 2017 | 0.393 ppb | 3 | 3 | 0.300 ppb - 0.480 ppb |
| 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 |
|---|---|---|
| 2013-10-21 | 201310240476AM | ND |
| 2013-10-21 | 201310240453AM | ND |
| 2013-10-22 | 201310240535AM | ND |
| 2013-10-22 | 201310240524AM | ND |
| 2013-10-22 | 201310240537AM | ND |
| 2013-10-23 | 201310250234AM | ND |
| 2013-10-23 | 201310250211AM | ND |
| 2013-10-23 | 201310250232AM | 0.470 ppb |
| 2013-10-28 | 201310300185AM | ND |
| 2014-01-14 | 201401160436AM | ND |
| 2014-03-18 | 201403200398AM | ND |
| 2014-04-15 | 201404170314AM | ND |
| 2014-04-15 | 201404170312AM | ND |
| 2014-04-16 | 201404190101AM | ND |
| 2014-04-16 | 201404190099AM | ND |
| 2014-04-17 | 201404190107AM | ND |
| 2014-04-17 | 201404190105AM | ND |
| 2014-04-22 | 201404240514AM | ND |
| 2014-04-22 | 201404240512AM | ND |
| 2014-04-29 | 201405010515AM | ND |
| 2014-07-15 | 201407190159AM | ND |
| 2014-08-12 | 201408140229AM | ND |
| 2016-09-19 | 201605310057 | 0.500 ppb |
| 2016-11-08 | 201611100330 | 0.370 ppb |
| 2017-01-03 | 201701041079 | 0.300 ppb |
| 2017-05-23 | 201705240989 | 0.480 ppb |
| 2017-08-21 | 201705300061 | 0.400 ppb |