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Proposition 65


The Carcinogen Identification Committee is a group of expert scientists appointed by the Governor to identify chemicals that have been clearly shown through scientifically valid testing according to generally accepted principles to cause cancer. (Cal. Health & Safety Code § 25249.8).

A Committee of Experts

The Carcinogen Identification Committee includes experts from among the following areas of specialization: epidemiology, oncology, pathology, medicine, public health, statistics, biology, toxicology, and related fields.

An Expert Determination

The committee meets at least once each calendar year. You can view meeting notices and other committee information here:

The addition of a chemical to the Proposition 65 list by the committee requires three steps:

  1. During the months prior to each meeting, scientists from the Office of Environmental Health Hazard Assessment prepare a hazard identification document that contains the scientific evidence on a chemical’s carcinogenicity. The public has an opportunity to submit relevant information to OEHHA that may be included in the document.  Once the document is completed, it is released to the public for a 45-day comment period.  Committee members then review the document as well as the public comments received.
  2. At the meetings, committee members have a chance to hear public testimony on the chemical and then review, discuss and vote on the evidence they have seen and heard.
  3. Members will vote to add a chemical to the list only if “it has been clearly shown through scientifically valid testing according to generally accepted principles to cause cancer ….” (Cal. Health & Safety Code § 25249.8).

Members of the committee also have the authority to suggest and prioritize chemicals for future review. They also identify the “authoritative bodies” (such as the National Toxicology Program and the International Agency for Research on Cancer) whose formal identifications of carcinogens qualify chemicals for listing. (Cal. Health & Safety Code § 25249.8).

The Carcinogen Identification Committee Members Are:

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