Know Your Environment. Protect Your Health.

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

Calif State Polytechnical Univ - Pomona

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.

 

7

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND10ND
2019ND10ND
2020ND20ND
2021N/A00N/A
2022ND10ND
2023ND20ND

ppt = parts per trillion

State, National, and Health Guidelines for Drinking Water

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
2018-12-04CA1910022_005_005-201812041250ND
2019-12-17CA1910022_005_005-201912171100ND
2020-06-09CA1910022_005_005-202006091010ND
2020-12-08CA1910022_005_005-202012081210ND
2022-06-07CA1910022_005_005-202206071035ND
2023-03-07CA1910022_005_005-202303071225ND
2023-09-26CA1910022_005_005-202309261135ND