Menu

EWG's Tap Water Database — 2019 UPDATE

Donate

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

Doyon Utilities Jber - Richardson

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
2012ND140ND
2013N/A00N/A
2014N/A00N/A
2015ND120ND
2016ND10ND
2017ND30ND

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
2012-01-23PE*2581110ND
2012-01-23PE*2581118ND
2012-01-23PE*2581094ND
2012-04-23PE*2629750ND
2012-04-23PE*2629766ND
2012-04-23PE*2629787ND
2012-04-23PE*2629812ND
2012-07-24PE*2682057ND
2012-07-24PE*2682082ND
2012-07-24PE*2682129ND
2012-11-26PE*2745631ND
2012-11-26PE*2745645ND
2012-11-26PE*2745655ND
2012-11-26PE*2745665ND
2015-02-24PE*3195338ND
2015-02-24PE*3195671ND
2015-02-24PE*3195307ND
2015-06-23PE*3268440ND
2015-06-23PE*3268597ND
2015-06-23PE*3268612ND
2015-09-14PE*3322325ND
2015-09-14PE*3322336ND
2015-09-14PE*3322353ND
2015-12-07PE*3371148ND
2015-12-07PE*3371161ND
2015-12-07PE*3371171ND
2016-03-29PE*3422162ND
2017-05-22PE*3698690ND
2017-08-28PE*3767831ND
2017-10-11PE*3797934ND