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EWG's Tap Water Database — 2021 UPDATE

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

California Water Service (CWS) - Salinas

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.

 

71

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014N/A00N/A
2015N/A00N/A
2016ND10ND
2017ND50ND
2018ND220ND
2019ND430ND

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
2016-12-299590-008-1413ND
2017-01-199590-014-1048ND
2017-03-022116-132-1110ND
2017-04-059590-005-1428ND
2017-11-219590-131-1240ND
2017-12-142116-132-1456ND
2018-02-019590-102-0955ND
2018-02-019590-103-1043ND
2018-02-069590-024-1030ND
2018-03-192116-123-1200ND
2018-03-209590-132-0953ND
2018-05-019590-103-1010ND
2018-05-019590-019-0943ND
2018-05-029590-102-0858ND
2018-05-039590-123-0928ND
2018-06-079590-132-1033ND
2018-08-029590-019-1056ND
2018-09-049590-132-1034ND
2018-10-029590-009-0928ND
2018-10-099590-018-1140ND
2018-10-299590-020-1318ND
2018-11-069590-104-0936ND
2018-11-079590-006-1026ND
2018-11-089590-024-1201ND
2018-11-209590-027-1346ND
2018-12-069590-037-1016ND
2018-12-069590-132-1148ND
2018-12-189590-015-0944ND
2019-01-039590-009-1359ND
2019-01-039590-022-1009ND
2019-01-299590-018-1411ND
2019-02-059590-026-1409ND
2019-02-059590-017-1431ND
2019-02-069590-027-0924ND
2019-02-149590-041-1236ND
2019-02-209590-019-0921ND
2019-02-209590-104-1139ND
2019-02-209590-006-1031ND
2019-03-069590-132-0954ND
2019-03-069590-037-1024ND
2019-03-149590-015-1443ND
2019-03-219590-023-1310ND
2019-04-019590-022-1120ND
2019-04-019590-008-0915ND
2019-04-029590-005-1406ND
2019-04-119590-041-1206ND
2019-05-019590-017-1232ND
2019-05-019590-026-1411ND
2019-05-089590-014-1433ND
2019-05-089590-019-1004ND
2019-06-129590-046-1030ND
2019-06-189590-106-1107ND
2019-06-189590-023-1321ND
2019-06-189590-132-0948ND
2019-07-029590-008-1020ND
2019-07-109590-029-0937ND
2019-07-169590-005-1130ND
2019-07-189590-030-1340ND
2019-07-189590-020-1120ND
2019-08-019590-014-1129ND
2019-09-129590-106-1057ND
2019-09-129590-132-1442ND
2019-09-129590-046-1045ND
2019-09-179590-131-1340ND
2019-09-252116-043-1242ND
2019-10-012116-029-1125ND
2019-10-039590-030-0940ND
2019-10-089590-020-0949ND
2019-12-039590-131-1013ND
2019-12-039590-132-0946ND
2019-12-059590-043-1357ND