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Integrated Risk Information System (IRIS)

IRIS Most Viewed Chemicals Full List of IRIS Chemicals
Acrylamide Arsenic, inorganic Benzene Bisphenol A Cadmium Chromium (VI) 1,4-Dioxane Formaldehyde Mercury, elemental Methylmercury (MeHg) Polychlorinated biphenyls (PCBs) Silver

EPA's Integrated Risk Information System (IRIS) is a human health assessment program that evaluates information on health effects that may result from exposure to environmental contaminants. Through the IRIS Program, EPA provides the highest quality science-based human health assessments to support the Agency's regulatory activities. The IRIS database is web accessible and contains information on more than 550 chemical substances. Learn more.

What's New in IRIS

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Draft Assessments under Review




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Recent Additions Basic Information IRIS Calendar IRIS Process A to Z List of IRIS Substances Advanced Search Compare IRIS Values IRIS Guidance Download IRIS IRISTrack Site Help & Tools Archived Drafts & Comments Related Links

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IRIS Science Blogs

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Have General Comments for the IRIS Program?

In response to public feedback, EPA has opened a "General Comments Docket" to receive feedback that has broad applicability to the IRIS Program. Comment in the General Docket

NOTE: This docket does not replace the IRIS Hotline, but rather provides another avenue to submit feedback to the IRIS Program.

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