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EWG's Tap Water Database

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

Warminster 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.

 

33

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2010N/A00N/A
2011ND330ND
2012N/A00N/A
2013N/A00N/A
2014N/A00N/A
2015N/A00N/A

ppt = parts per trillion.

State and national drinking water standards and health guidelines

Health Guideline 0.0002 ppt

The 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.

ppt = parts per trillion.

EPA Maximum Contaminant
Level (MCL) 0.03 ppt

The enforceable federal standard that defines the highest level of a contaminant allowed in drinking water.

ppt = parts per trillion.

EPA Maximum Contaminant
Level Goal (MCLG)0 ppt

A non-enforceable federal health guideline. For cancer-causing chemicals, these health goals are typically set to zero.

ppt = parts per trillion.

All test results

Date Lab ID Result
2011-02-0710149244017ND
2011-02-0710149244009ND
2011-02-0710149244010ND
2011-02-0710149244011ND
2011-02-0710149244012ND
2011-02-0710149244013ND
2011-02-0710149244014ND
2011-02-0710149244015ND
2011-02-0710149244006ND
2011-02-0710149244016ND
2011-02-0710149244008ND
2011-02-0710149244003ND
2011-02-0710149244004ND
2011-02-0710149244002ND
2011-02-0710149244005ND
2011-02-0710149244001ND
2011-02-0710149244007ND
2011-04-0410153845015ND
2011-04-0410153845016ND
2011-04-0410153845005ND
2011-04-0410153845002ND
2011-04-0410153845014ND
2011-04-0410153845007ND
2011-04-0410153845013ND
2011-04-0410153845003ND
2011-04-0410153845012ND
2011-04-0410153845011ND
2011-04-0410153845004ND
2011-04-0410153845010ND
2011-04-0410153845009ND
2011-04-0410153845006ND
2011-04-0410153845008ND
2011-04-0410153845001ND