Know Your Environment. Protect Your Health.

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

Valley Utilities Water Company Glendale

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.

 

20

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018ND80ND
2019N/A00N/A
2020N/A00N/A
2021ND80ND
2022ND40ND
2023N/A00N/A

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
2018-03-01201803010294SAND
2018-03-01201803010294SBND
2018-03-07201803070714SBND
2018-03-07201803070714SAND
2018-07-19201807190556SAND
2018-07-19201807190556SBND
2018-07-19201807190556SCND
2018-07-19201807190556SDND
2021-03-03202103040014SBND
2021-03-03202103040014SCND
2021-03-03202103040014SAND
2021-03-11202103160055SND
2021-04-14202104150273SAND
2021-04-14202104150273SBND
2021-04-14202104150273SCND
2021-04-14202104150273SDND
2022-02-02202202030108SND
2022-04-27202204280128SND
2022-07-07380-7658-1ND
2022-10-05380-23186-1ND