Know Your Environment. Protect Your Health.

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

New Orleans Carrollton Waterworks

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.

 

27

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2018N/A00N/A
2019ND100ND
2020ND30ND
2021ND30ND
2022ND60ND
2023ND50ND

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
2019-02-2710465391001ND
2019-02-2710465404001ND
2019-02-2710465391001ND
2019-02-2710465404001ND
2019-09-1910492713001ND
2019-09-1910492713001ND
2019-10-1710496244001ND
2019-10-1710496241001ND
2019-10-1710496244001ND
2019-10-1710496241001ND
2020-03-2610513217001ND
2020-03-2610513222001ND
2020-03-2610513228001ND
2021-03-2910553578001ND
2021-03-2910553580001ND
2021-03-2910553579001ND
2022-03-1510601595001ND
2022-03-1510601608001ND
2022-03-1510601618001ND
2022-10-1310630229001ND
2022-10-1310630230001ND
2022-10-1310630233001ND
2023-03-0610645014001ND
2023-03-0610645015001ND
2023-03-0610645016001ND
2023-11-1610676739001ND
2023-11-1610676740001ND