Know Your Environment. Protect Your Health.

1,4-Dioxane

Mount Kisco Water Department

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.

Click here to read more about 1,4-dioxane.

 

39

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND60ND
2015N/A00N/A
2016N/A00N/A
2017N/A00N/A
2018N/A00N/A
2019N/A00N/A
2020ND60ND
2021ND170ND
2022ND40ND
20230.00917 ppb62ND - 0.0340 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
2014-03-11105945PND
2014-03-11105946PND
2014-06-09107617PND
2014-09-17109093PND
2014-09-17109092PND
2014-12-10110736PND
2020-09-30L2042060-01-PFASND
2020-12-14L2056481-03-PFASND
2020-12-14L2056481-05-PFASND
2020-12-14L2056481-01-PFASND
2020-12-14L2056481-06-PFASND
2020-12-14L2056481-04-PFASND
2021-03-29L2116246-06-PFASND
2021-03-29L2116246-05-PFASND
2021-03-29L2116246-04-PFASND
2021-03-29L2116246-02-PFASND
2021-03-29L2116246-01-PFASND
2021-05-12L212522-05-PFASND
2021-05-12L2125221-03-PFASND
2021-05-12L2125221-04-PFASND
2021-05-12L212522-06-PFASND
2021-08-24L2145595-07-PFASND
2021-08-24L2145595-01-PFASND
2021-08-24L2145595-05-PFASND
2021-08-24L21445595-06-PFASND
2021-11-15L2163351-06-PFASND
2021-11-15L2163351-07-PFASND
2021-11-15L216335-01-PFASND
2021-11-15L2163351-05-PFASND
2022-08-15420-232326-6-PFASND
2022-08-15420-232326-1-PFASND
2022-08-15420-232326-7-PFASND
2022-08-15420-232326-5-PFASND
2023-09-25AZ17750-PFASND
2023-09-25AZ17747-PFAS0.0210 ppb
2023-09-25AZ17748-PFASND
2023-09-25AZ17749-PFAS0.0340 ppb
2023-09-25AZ17746-PFASND
2023-12-11AZ22401-PFASND