Know Your Environment. Protect Your Health.

1,4-Dioxane

Lynwood Park Mutual Water Company

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.

 

68

Samples

0

Samples exceeding legal limit (MCL)

68

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
20183.19 ppb12122.10 ppb - 3.70 ppb
20193.15 ppb12122.30 ppb - 4.20 ppb
20202.67 ppb11111.90 ppb - 3.30 ppb
20212.48 ppb12121.90 ppb - 2.90 ppb
20222.56 ppb12121.80 ppb - 4.00 ppb
20232.28 ppb991.70 ppb - 3.00 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
2018-01-15CA1910081_003_003-2018011511573.50 ppb
2018-01-15CA1910081_001_001-2018011511202.60 ppb
2018-01-15CA1910081_002_002-2018011510553.60 ppb
2018-04-16CA1910081_001_001-2018041612003.10 ppb
2018-04-16CA1910081_003_003-2018041612453.70 ppb
2018-04-16CA1910081_002_002-2018041612303.30 ppb
2018-07-17CA1910081_001_001-2018071712383.20 ppb
2018-07-17CA1910081_003_003-2018071713053.10 ppb
2018-07-17CA1910081_002_002-2018071712253.70 ppb
2018-10-15CA1910081_003_003-2018101511553.20 ppb
2018-10-22CA1910081_002_002-2018102214403.20 ppb
2018-10-22CA1910081_001_001-2018102214502.10 ppb
2019-01-21CA1910081_002_002-2019012113254.20 ppb
2019-01-21CA1910081_001_001-2019012113003.20 ppb
2019-01-21CA1910081_003_003-2019012112403.90 ppb
2019-04-22CA1910081_002_002-2019042211243.00 ppb
2019-04-22CA1910081_001_001-2019042210502.30 ppb
2019-04-22CA1910081_003_003-2019042211543.10 ppb
2019-07-15CA1910081_002_002-2019071511052.90 ppb
2019-07-15CA1910081_003_003-2019071512103.10 ppb
2019-07-15CA1910081_001_001-2019071511152.70 ppb
2019-10-14CA1910081_003_003-2019101410403.30 ppb
2019-10-14CA1910081_002_002-2019101410003.10 ppb
2019-10-14CA1910081_001_001-2019101410153.00 ppb
2020-03-16CA1910081_003_003-2020031611253.30 ppb
2020-04-20CA1910081_003_003-2020042010503.30 ppb
2020-04-20CA1910081_001_001-2020042010152.90 ppb
2020-04-20CA1910081_002_002-2020042010342.80 ppb
2020-06-22CA1910081_002_002-2020062210572.40 ppb
2020-07-21CA1910081_003_003-2020072112053.10 ppb
2020-07-21CA1910081_002_002-2020072111282.50 ppb
2020-07-21CA1910081_001_001-2020072112242.70 ppb
2020-10-19CA1910081_002_002-2020101910281.90 ppb
2020-10-19CA1910081_001_001-2020101910152.10 ppb
2020-10-19CA1910081_003_003-2020101909552.40 ppb
2021-01-18CA1910081_001_001-2021011811152.40 ppb
2021-01-18CA1910081_002_002-2021011811202.30 ppb
2021-01-18CA1910081_003_003-2021011811002.90 ppb
2021-04-20CA1910081_003_003-2021042011062.80 ppb
2021-04-20CA1910081_002_002-2021042011301.90 ppb
2021-04-20CA1910081_001_001-2021042011232.20 ppb
2021-07-19CA1910081_003_003-2021071912312.80 ppb
2021-07-19CA1910081_001_001-2021071912012.40 ppb
2021-07-27CA1910081_002_002-2021072711582.00 ppb
2021-10-18CA1910081_002_002-2021101814052.50 ppb
2021-10-18CA1910081_003_003-2021101813302.90 ppb
2021-11-22CA1910081_001_001-2021112210422.70 ppb
2022-01-17CA1910081_003_003-2022011710273.00 ppb
2022-01-17CA1910081_001_001-2022011710451.80 ppb
2022-01-17CA1910081_002_002-2022011710522.00 ppb
2022-04-18CA1910081_001_001-2022041810332.10 ppb
2022-04-18CA1910081_002_002-2022041810492.00 ppb
2022-04-18CA1910081_003_003-2022041810202.50 ppb
2022-07-18CA1910081_002_002-2022071811202.20 ppb
2022-07-18CA1910081_003_003-2022071811003.00 ppb
2022-08-15CA1910081_001_001-2022081509572.10 ppb
2022-10-17CA1910081_003_003-2022101712304.00 ppb
2022-10-17CA1910081_001_001-2022101712552.90 ppb
2022-10-17CA1910081_002_002-2022101713183.10 ppb
2023-01-16CA1910081_001_001-2023011610552.40 ppb
2023-01-16CA1910081_002_002-2023011611052.40 ppb
2023-01-16CA1910081_003_003-2023011610113.00 ppb
2023-04-18CA1910081_001_001-2023041816102.00 ppb
2023-04-18CA1910081_002_002-2023041816301.80 ppb
2023-04-18CA1910081_003_003-2023041815352.40 ppb
2023-10-17CA1910081_001_001-2023101711252.00 ppb
2023-10-17CA1910081_002_002-2023101711451.70 ppb
2023-10-17CA1910081_003_003-2023101710502.80 ppb