Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

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

Mcconnellsburg Borough Municipal Authority

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.

 

26

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND40ND
2015N/A00N/A
2016N/A00N/A
2017ND200ND
2018ND20ND
2019N/A00N/A

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
2014-06-0514060762-002ND
2014-06-0514060762-003ND
2014-06-0514060762-004ND
2014-06-0514060762-001ND
2017-03-0815854003ND
2017-03-0815854005ND
2017-03-0815854004ND
2017-03-0815854002ND
2017-04-0416004935ND
2017-04-1816005179ND
2017-05-0316162995ND
2017-05-1716163005ND
2017-08-0216790684ND
2017-08-0216790683ND
2017-08-0216790685ND
2017-08-0216790686ND
2017-09-2016790840ND
2017-09-2016790841ND
2017-09-2016790839ND
2017-09-2016790842ND
2017-11-0817080566ND
2017-11-0817080565ND
2017-11-0817080568ND
2017-11-0817080567ND
2018-03-2810426512001ND
2018-05-238055387-01ND