Di(2-ethylhexyl) phthalate
Regional Water Authority
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.
Samples
Samples exceeding legal limit (MCL)
Samples exceeding
health guidelines
Testing results - average by year
| Year | Average result | Samples taken | Detections | Range of results |
|---|---|---|---|---|
| 2018 | N/A | 0 | 0 | N/A |
| 2019 | ND | 22 | 0 | ND |
| 2020 | N/A | 0 | 0 | N/A |
| 2021 | N/A | 0 | 0 | N/A |
| 2022 | 0.146 ppb | 31 | 3 | ND - 1.56 ppb |
| 2023 | N/A | 0 | 0 | N/A |
ppb = parts per billion
State, National, and Health Guidelines for Drinking Water
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 |
|---|---|---|
| 2019-05-08 | SOC 200531300 | ND |
| 2019-05-28 | SOC 200533720 | ND |
| 2019-05-28 | SOC 200533719 | ND |
| 2019-05-28 | SOC 200533803 | ND |
| 2019-05-28 | SOC 200533804 | ND |
| 2019-05-28 | SOC 200533660 | ND |
| 2019-05-28 | SOC 200533659 | ND |
| 2019-05-29 | SOC 200533881 | ND |
| 2019-05-29 | SOC 200533880 | ND |
| 2019-05-29 | SOC 200533867 | ND |
| 2019-05-29 | SOC 200533868 | ND |
| 2019-08-26 | SOC 200546198 | ND |
| 2019-08-26 | SOC 200546200 | ND |
| 2019-08-26 | SOC 200546197 | ND |
| 2019-08-27 | SOC 200546267 | ND |
| 2019-08-27 | SOC 200546268 | ND |
| 2019-08-27 | SOC 200546302 | ND |
| 2019-08-27 | SOC 200546303 | ND |
| 2019-08-28 | SOC 200546738 | ND |
| 2019-08-28 | SOC 200546737 | ND |
| 2019-08-28 | SOC 200546736 | ND |
| 2019-08-28 | SOC 200546553 | ND |
| 2022-07-11 | S300210659 300210665 | ND |
| 2022-07-11 | S300210651 300210657 | 1.42 ppb |
| 2022-07-11 | S300210156 300210162 | ND |
| 2022-07-11 | S300210822 300210828 | ND |
| 2022-07-11 | S300210164 300210170 | ND |
| 2022-07-12 | S300211086 300211092 | ND |
| 2022-07-12 | S300211068 300211074 | ND |
| 2022-07-12 | S300211076 300211082 | ND |
| 2022-07-13 | S300212413 300212419 | ND |
| 2022-07-13 | S300212421 300212427 | ND |
| 2022-07-14 | S300212957 300212963 | ND |
| 2022-10-17 | S300258850 300258856 | ND |
| 2022-10-17 | 300258850 300258856B | ND |
| 2022-10-17 | 300258858 300258864B | 1.56 ppb |
| 2022-10-17 | S300258858 300258864 | 1.56 ppb |
| 2022-10-18 | S300258921 300258927 | ND |
| 2022-10-18 | 300258913 300258919B | ND |
| 2022-10-18 | 300258921 300258927B | ND |
| 2022-10-18 | 300259358 300259364B | ND |
| 2022-10-18 | S300259358 300259364 | ND |
| 2022-10-18 | S300259350 300259356 | ND |
| 2022-10-18 | 300259350 300259356B | ND |
| 2022-10-18 | S300258913 300258919 | ND |
| 2022-10-19 | S300259930 300259938 | ND |
| 2022-10-19 | 300259930 300259938B | ND |
| 2022-10-19 | 300259940 300259946B | ND |
| 2022-10-19 | S300259940 300259946 | ND |
| 2022-10-19 | S300260499 300260505 | ND |
| 2022-10-19 | 300260499 300260505B | ND |
| 2022-10-19 | 300260507 300260513B | ND |
| 2022-12-06 | S300281400 300281406 | ND |