Menu

EWG's Tap Water Database — 2021 UPDATE

Donate

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

Doylestown Borough Water Department

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.

 

37

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND190ND
2015ND100ND
2016N/A00N/A
2017ND80ND
2018N/A00N/A
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
2014-02-25L4943098-5ND
2014-02-25L4943098-1ND
2014-02-25L4943098-4ND
2014-02-25L4943098-2ND
2014-02-25L4943098-3ND
2014-04-29L4980180-1ND
2014-04-29L4980180-5ND
2014-04-29L4980180-4ND
2014-04-29L4980180-3ND
2014-04-29L4980180-2ND
2014-08-26L5114559-3ND
2014-08-26L5114559-1ND
2014-08-26L5114559-4ND
2014-08-26L5114559-2ND
2014-08-26L5114559-5ND
2014-10-28L5248993-3ND
2014-10-28L5248993-2ND
2014-10-28L5248993-5ND
2014-10-28L5248993-4ND
2015-01-1912274801ND
2015-01-1912274785ND
2015-01-1912274789ND
2015-01-1912274793ND
2015-01-1912274797ND
2015-04-1412621227ND
2015-04-1412621219ND
2015-04-1412621223ND
2015-04-1412621215ND
2015-04-1412621211ND
2017-01-1615782554ND
2017-01-1615503280ND
2017-01-1615782450ND
2017-01-1615503177ND
2017-01-1615782519ND
2017-01-1615503246ND
2017-01-1815503308ND
2017-02-2015782566ND