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EWG's Tap Water Database — 2021 UPDATE

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Di(2-ethylhexyl) phthalate

Westchester County Water District #1

Di(2-ethylhexyl) phthalate, or DEHP, is a softener added to PVC plastics. Phthalates are hormone disruptors that target the male reproductive system. Read More.

DEHP can cross the placenta and disrupt steroid hormone synthesis, and may lead to cancer. In laboratory animals, exposure to DEHP during pregnancy harms fetal developmental and causes abnormalities in the male reproductive tract. Human epidemiological studies show certain phthalates, especially DEHP, are associated with reduced anogenital distance in human male infants, which is a measure of adverse developmental effects in human male infants exposed prenatally to endocrine disrupting chemicals. DEHP may also interfere with signaling related to the timing of birth and may have adverse effects on the immune system.

 

10

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND10ND
2015N/A00N/A
2016ND20ND
2017ND20ND
2018ND30ND
20190.355 ppb21ND - 0.710 ppb

ppb = parts per billion

State and national drinking water standards and health guidelines

EWG Health Guideline 3 ppb

The EWG Health Guideline of 3 ppb for di(2-ethylhexyl) phthalate 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) 6 ppb

The legal limit for di(2-ethylhexyl) phthalate, established in 1992, was based on analytical detection limits at the time that the standard was set.

ppb = parts per billion

All test results

Date Lab ID Result
2014-12-01AQ24568SOCND
2016-09-06AS19152 SOC WD#1ND
2016-09-06AS19150 SOC WD#1ND
2017-11-13AT23822SOCSND
2017-11-13AT23824SOCSND
2018-09-24AU20758WD1 SOCSND
2018-09-24AU20757WD1 SOCSND
2018-12-03AU25856WD1 SOCSND
2019-11-12AV23850D SOCSND
2019-11-12AV23849D SOCS0.710 ppb