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EWG's Tap Water Database — 2021 UPDATE

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Di(2-ethylhexyl) phthalate

Rehoboth District

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.

 

29

Samples

0

Samples exceeding legal limit (MCL)

0

Samples exceeding
health guidelines

Testing results - average by year

 
YearAverage resultSamples takenDetectionsRange of results
2014ND20ND
2015ND110ND
2016N/A00N/A
20170.490 ppb220.280 ppb - 0.700 ppb
2018ND120ND
2019ND20ND

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
2014-04-2335135573003ND
2014-07-2835147904004ND
2015-05-2035189675003ND
2015-05-2035189672004ND
2015-05-2035189670003ND
2015-05-2035189668003ND
2015-08-1035202984003ND
2015-08-1035202979004ND
2015-08-2635205121003ND
2015-08-2635205113003ND
2015-08-2635205112004ND
2015-08-2635205107003ND
2015-10-2035213069004ND
2017-04-2022246980040.280 ppb
2017-09-2722658490010.700 ppb
2018-04-192310468005ND
2018-04-192310461003ND
2018-04-252311949002ND
2018-04-252311946002ND
2018-04-252311945004ND
2018-06-072319770003ND
2018-10-014076150ND
2018-10-014076149ND
2018-10-024079407ND
2018-10-024079406ND
2018-10-034079393ND
2018-10-034079392ND
2019-05-284311332ND
2019-10-224464908ND