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EWG's Tap Water Database — 2019 UPDATE

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2,3,7,8-TCDD (Dioxin)

Mission Springs WD

Dioxins are contaminants released from chemical manufacturing, pulp and paper bleaching, and incineration of products that contain chlorine. 2,3,7,8-Tetrachlorodibenzodioxin (2,3,7,8-TCDD) is the most toxic chemical in the group of dioxins. Read More.

Dioxins are among the most toxic known environmental pollutants. As a class, dioxins are extremely toxic, persistent and bioaccumulative; these contaminants build up and are stored in fatty tissues and fluids, such as breast milk, and pass from the mother to the child. Most people are exposed to dioxins through the food they eat, primarily from meat, dairy, fish and eggs. In humans, dioxins are associated with cancer, birth defects, damage to the nervous and immune systems, altered metabolism, thyroid disruption, altered menstrual cycling and damage to the cardiovascular system.

 

30

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012N/A00N/A
2013N/A00N/A
2014ND200ND
2015N/A00N/A
2016N/A00N/A
2017ND100ND

ppt = parts per trillion

State and national drinking water standards and health guidelines

EWG Health Guideline 0.0002 ppt

The EWG Health Guideline of 0.0002 ppt for 2,3,7,8-TCDD 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.

EPA Maximum Contaminant
Level (MCL) 0.03 ppt

ppt = parts per trillion

All test results

Date Lab ID Result
2014-02-049588-014-0830ND
2014-02-049588-011-1048ND
2014-02-049588-026-0920ND
2014-02-049588-025-0950ND
2014-02-049588-008-0750ND
2014-02-119588-013-1015ND
2014-02-119588-010-0730ND
2014-02-119588-015-0830ND
2014-02-119588-017-0950ND
2014-02-119588-030-0910ND
2014-07-079588-014-0911ND
2014-07-079588-026-0825ND
2014-07-089588-015-0849ND
2014-07-089588-010-0747ND
2014-07-089588-008-0817ND
2014-07-089588-030-0922ND
2014-07-099588-025-1118ND
2014-07-099588-017-1051ND
2014-07-099588-013-1035ND
2014-07-099588-011-1203ND
2017-06-019588-013-1108ND
2017-06-019588-015-1246ND
2017-06-059588-026-1200ND
2017-06-059588-014-1130ND
2017-06-069588-025-1300ND
2017-06-069588-017-1100ND
2017-06-069588-011-1200ND
2017-06-069588-010-0945ND
2017-06-079588-030-1200ND
2017-06-079588-008-1124ND