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
- 9/17-18: NAS held the first meeting on the review of the IRIS Assessment Development Process
- 8/8: IRIS announces a new schedule for the toxicological review of Inorganic Arsenic (Cancer and Non-Cancer Effects of Oral Exposures).
- 7/17: IRIS posted the literature search for Benzo[a]pyrene (PDF) (80 pp, 431 KB, about PDF) requesting public comments.
- 6/28: IRIS posted the literature search for Acrylonitrile (PDF) (69 pp, 512 KB, about PDF) requesting public comments.
- 6/26: EPA announces the release of the draft IRIS Toxicological Review of Trimethylbenzenes for external review and announced a public listening session.
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)