Integrated Risk Information System (IRIS)
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
- 2/5: EPA announces updates to several schedules in IRISTrack
- 1/30: EPA delivers materials to the National Research Council committee reviewing the IRIS assessment development process
- 1/30: EPA's Science Advisory Board announces the establishment of the Chemical Assessment Advisory Committee for review of upcoming IRIS Assessments
- 1/30: EPA's Science Advisory Board releases the final report, SAB Review of EPA’s Draft Assessment Entitled Toxicological Review of Libby Amphibole Asbestos (August 2011)
- 1/24-25: National Research Council (NRC) hosts a public workshop for the Review of EPA's IRIS Toxicological Review of Inorganic Arsenic

Draft Assessments under External Peer Review
- Trimethylbenzenes (06/26)
- Ammonia (06/01)
- Biphenyl (09/30)
- Vanadium Pentoxide (09/30)
- 1,4-Dioxane (Inhalation) (09/09)
- n-Butanol (09/08)
- Libby Amphibole Asbestos (08/25)
Recent Final Assessments
- Tetrahydrofuran (02/21)
- 2,3,7,8-Tetrachlorodibenzo-p-dioxin (02/17)
- Tetrachloroethylene (Perchloroethylene) (02/10)
- Dichloromethane (11/18)
- Trichloroacetic acid (09/30)
- Trichloroethylene (09/28)
- Hexachloroethane (09/23)
