1,4-Dioxane
City of North Platte
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 | 0.00714 ppb | 14 | 1 | ND - 0.1000 ppb |
| 2014 | 0.0414 ppb | 14 | 1 | ND - 0.580 ppb |
| 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 |
|---|---|---|
| 2013-10-01 | 201310030462AM | ND |
| 2013-10-01 | 201310030486AM | ND |
| 2013-10-01 | 201310030247AM | ND |
| 2013-10-01 | 201310040263AM | ND |
| 2013-10-01 | 201310030367AM | ND |
| 2013-10-01 | 201310030497AM | ND |
| 2013-10-01 | 201310030488AM | ND |
| 2013-10-02 | 201310040242AM | ND |
| 2013-10-02 | 201310040270AM | ND |
| 2013-10-02 | 201310040208AM | ND |
| 2013-10-02 | 201310040232AM | ND |
| 2013-10-02 | 201310040117AM | 0.1000 ppb |
| 2013-10-02 | 201310040131AM | ND |
| 2013-10-02 | 201310040126AM | ND |
| 2014-04-14 | 201404160823AM | ND |
| 2014-04-14 | 201404160626AM | ND |
| 2014-04-14 | 201404160738AM | ND |
| 2014-04-14 | 201404160640AM | ND |
| 2014-04-14 | 201404160892AM | 0.580 ppb |
| 2014-04-14 | 201404160903AM | ND |
| 2014-04-14 | 201404160896AM | ND |
| 2014-04-15 | 201404160915AM | ND |
| 2014-04-15 | 201404160634AM | ND |
| 2014-04-15 | 201404160831AM | ND |
| 2014-04-15 | 201404160825AM | ND |
| 2014-04-15 | 201404160812AM | ND |
| 2014-04-15 | 201404160632AM | ND |
| 2014-04-15 | 201404160624AM | ND |