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EWG's Tap Water Database — 2019 UPDATE

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Di(2-ethylhexyl) phthalate

City of Hewitt

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.

 

17

Samples

1

Samples exceeding legal limit (MCL)

1

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2012ND50ND
2013N/A00N/A
2014N/A00N/A
2015ND40ND
20162.19 ppb440.780 ppb - 6.20 ppb
20170.170 ppb41ND - 0.680 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
2012-01-12AB77669ND
2012-01-12AB77666ND
2012-01-12AB77665ND
2012-01-12AB77668ND
2012-01-12AB77667ND
2015-03-23AC85765ND
2015-03-23AC85762ND
2015-03-23AC85763ND
2015-10-28AD12063ND
2016-01-20AD190696.20 ppb
2016-04-06AD321840.870 ppb
2016-07-13AD441650.910 ppb
2016-10-12AD532280.780 ppb
2017-02-06AD693870.680 ppb
2017-05-02AD82274ND
2017-07-19AD90034ND
2017-10-09AD99924ND