1,4-Dioxane
Hoosick Falls
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 | ND | 1 | 0 | ND |
| 2021 | 0.0784 ppb | 5 | 2 | ND - 0.206 ppb |
| 2022 | 0.0752 ppb | 13 | 2 | ND - 0.527 ppb |
| 2023 | ND | 3 | 0 | ND |
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 |
|---|---|---|
| 2020-12-21 | JH2009852 | ND |
| 2021-03-16 | JH2102007 | ND |
| 2021-09-19 | JH2108577 | ND |
| 2021-09-19 | JH2108576 | 0.206 ppb |
| 2021-09-19 | JH2108575 | ND |
| 2021-11-10 | JH2110262 | 0.186 ppb |
| 2022-03-07 | JH2201745-11549 | 0.451 ppb |
| 2022-03-07 | JH2201746-11549 | ND |
| 2022-03-07 | JH2201744-11549 | ND |
| 2022-06-14 | JH22045689 | ND |
| 2022-06-14 | JH2204568 | ND |
| 2022-06-14 | JH22045670 | ND |
| 2022-09-21 | JH2208300 | ND |
| 2022-09-21 | JH2208301 | ND |
| 2022-09-21 | JH2208302 | ND |
| 2022-09-26 | L2253017-02 | ND |
| 2022-12-13 | JH2210618 | ND |
| 2022-12-13 | JH2210616 | ND |
| 2022-12-13 | JH2210617 | 0.527 ppb |
| 2023-10-04 | JH2308740 | ND |
| 2023-10-04 | JH2308741 | ND |
| 2023-10-04 | JH2308739 | ND |