1,4-Dioxane
Sandridge Mobile Home Park
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 |
|---|---|---|---|---|
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | N/A | 0 | 0 | N/A |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | 0.195 ppb | 12 | 11 | ND - 0.300 ppb |
| 2022 | 0.0926 ppb | 11 | 8 | ND - 0.396 ppb |
| 2023 | 0.0411 ppb | 9 | 3 | ND - 0.322 ppb |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
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 |
|---|---|---|
| 2021-02-22 | 1Q PFAS/1,4D W3 W4 | 0.250 ppb |
| 2021-02-22 | 1Q PFAS/1,4D W1 W2 | 0.120 ppb |
| 2021-05-06 | 2Q PFAS/1,4D W4 | ND |
| 2021-05-06 | 2Q PFAS/1,4D W3 | 0.170 ppb |
| 2021-06-23 | 2Q PFAS/1,4D W1 | 0.300 ppb |
| 2021-06-23 | 2QPFAS/1,4D W2 | 0.270 ppb |
| 2021-08-31 | 3QPFAS/1,4D W1 | 0.250 ppb |
| 2021-08-31 | 3QPFAS/1,4D W2 | 0.270 ppb |
| 2021-12-03 | R2112717-004 | 0.0898 ppb |
| 2021-12-03 | R2112717-001 | 0.266 ppb |
| 2021-12-03 | R2112717-002 | 0.268 ppb |
| 2021-12-03 | R2112717-003 | 0.0868 ppb |
| 2022-02-17 | R2201440-001 | 0.180 ppb |
| 2022-02-17 | R2201440-004 | 0.0382 ppb |
| 2022-02-17 | R2201440-003 | 0.0276 ppb |
| 2022-02-17 | R2201440-002 | 0.216 ppb |
| 2022-09-22 | R2209039-003 | 0.0420 ppb |
| 2022-09-22 | R2209039-002 | 0.0542 ppb |
| 2022-09-22 | R2209039-001 | 0.0642 ppb |
| 2022-09-22 | R2209039 | 0.396 ppb |
| 2022-12-30 | R22123880 | ND |
| 2022-12-30 | R2212380-A | ND |
| 2022-12-30 | R2212380B | ND |
| 2023-03-28 | R2302581-2 | 0.0216 ppb |
| 2023-03-28 | R2302581-1 | ND |
| 2023-03-28 | R2302581 | 0.0264 ppb |
| 2023-06-28 | R2305790 | 0.322 ppb |
| 2023-06-28 | R2305790-1 | ND |
| 2023-09-19 | R2308571-1 | ND |
| 2023-09-19 | R2308571-2 | ND |
| 2023-09-19 | R2308571-3 | ND |
| 2023-12-18 | R2311697 | ND |