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EWG's Tap Water Database — 2021 UPDATE

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

New York American Water - Merrick

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.

 

73

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND30ND
2015ND170ND
2016ND170ND
2017N/A00N/A
2018ND190ND
2019ND170ND

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
2014-03-061403358-001-SOCSND
2014-07-171407C93-001ND
2014-07-171407C93-001-SOCSND
2015-06-291506M99-001ND
2015-06-291506M99-002ND
2015-07-221507G40-002ND
2015-07-221507G40-001ND
2015-08-061508534-002ND
2015-08-0615085354-001ND
2015-08-241508I54-002ND
2015-08-241508I54-001ND
2015-08-241508I54-003ND
2015-08-271508L59-001ND
2015-10-151510C35-002ND
2015-10-151510C35-001ND
2015-10-191510E53-001ND
2015-10-191510E53-002ND
2015-12-031512275-001ND
2015-12-181512G22-002ND
2015-12-181512G22-001ND
2016-01-141601A14-001ND
2016-01-141601A14-002ND
2016-05-201605J47-001ND
2016-09-191609F57-002ND
2016-09-191609F57-003ND
2016-09-191609F57-004ND
2016-09-191609F57-001ND
2016-09-221609J07-002ND
2016-09-221609J07-001ND
2016-09-221609J07-003ND
2016-09-221609J07-004ND
2016-09-291609Q58-003ND
2016-09-291609Q58-004ND
2016-09-291609Q58-002ND
2016-09-291609Q58-001ND
2016-10-06701433002ND
2016-10-06701433001ND
2018-01-3038294901ND
2018-04-2739224701ND
2018-04-2739224801ND
2018-05-0438911701ND
2018-05-0438911901ND
2018-06-2540332901ND
2018-06-2540332401ND
2018-07-2340698001ND
2018-07-2340697801ND
2018-08-0139950701ND
2018-08-0139950501ND
2018-09-137064741002ND
2018-09-137064741001ND
2018-10-0241165501ND
2018-10-1541553901ND
2018-10-1541554101ND
2018-10-2542043601ND
2018-11-1941165401ND
2018-12-2042308401ND
2019-02-2542605401ND
2019-03-0743510501ND
2019-04-2543774201ND
2019-07-2244673401ND
2019-07-2244672301ND
2019-08-1245156901ND
2019-08-1945158201ND
2019-08-1945158001ND
2019-10-2946964701ND
2019-10-2946139501ND
2019-10-3046897201ND
2019-10-3046897101ND
2019-11-2147627301ND
2019-11-2147298001ND
2019-12-0570114266001ND
2019-12-0547298101ND
2019-12-0570114266002ND