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Plasticizers

Diethyl phthalate

Health Effects

EPA's Integrated Risk Information System classifies Diethyl phthalate as: D; not classifiable as a human carcinogen. EPA's stated basis: "Pertinent data regarding carcinogenicity were not located in the available literature." EPA has not set a federal drinking-water limit (MCL or MCLG) for Diethyl phthalate; IRIS assesses a chemical's toxicity, not the amount permitted in tap water.

Source: EPA IRIS โ€” Integrated Risk Information System (IRIS) (retrieved 2026-07-28)

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How to Remove It

Water filters certified under the following NSF standards are effective at removing Diethyl phthalate:

Filter recommendations for this contaminant are being updated.

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Contaminant Type

Diethyl phthalate is classified as a Plasticizers contaminant.

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