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EWG's Tap Water Database — 2021 UPDATE

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

Prescott Valley WD Upper

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.

 

59

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
2016ND200ND
2017N/A00N/A
2018ND30ND
2019ND360ND

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
2016-02-09201602100059SCND
2016-02-09201602100059SBND
2016-02-09201602100059SAND
2016-02-10201602110043SCND
2016-02-10201602110043SBND
2016-02-10201602110043SAND
2016-02-10201602110037SDND
2016-02-10201602110037SCND
2016-02-10201602110037SBND
2016-02-10201602110037SAND
2016-08-03201608040057SAND
2016-08-03201608040057SBND
2016-08-03201608040057SCND
2016-08-03201608040057SEND
2016-08-03201608040057SDND
2016-08-04201608050126SEND
2016-08-04201608050126SDND
2016-08-04201608050126SCND
2016-08-04201608050126SBND
2016-08-04201608050126SAND
2018-05-09201805100267SND
2018-07-25201807250682SND
2018-10-11201810120163SND
2019-02-05201902060091SBND
2019-02-05201902060094SDND
2019-02-05201902060094SCND
2019-02-05201902060094SBND
2019-02-05201902060094SAND
2019-02-05201902060091SDND
2019-02-05201902060091SCND
2019-02-05201902060091SAND
2019-02-06201902070504SDND
2019-02-06201902070504SCND
2019-02-06201902070504SBND
2019-02-06201902070504SAND
2019-02-06201902070500SDND
2019-02-06201902070500SCND
2019-02-06201902070500SBND
2019-02-06201902070500SAND
2019-05-07201905080095SEND
2019-05-07201905080095SAND
2019-05-07201905080095SBND
2019-05-07201905080095SCND
2019-05-07201905080095SDND
2019-05-07201905080097SAND
2019-05-07201905080097SBND
2019-05-07201905080097SCND
2019-05-07201905080097SDND
2019-05-08201905090409SCND
2019-05-08201905090409SBND
2019-05-08201905090409SAND
2019-05-08201905090404SDND
2019-05-08201905090404SCND
2019-05-08201905090404SBND
2019-05-08201905090404SAND
2019-06-1919F2188-01ND
2019-08-2819H3349-01ND
2019-08-2819H3342-01ND
2019-09-1619I1769-05ND