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Chemicals Listed Effective January 3, 2020 As Known to The State of California To Cause Reproductive Toxicity (Developmental Endpoint): Cannabis (Marijuana) Smoke and Δ9-Tetrahydrocannabinol (Δ9-THC)

Effective January 3, 2020, the Office of Environmental Health Hazard Assessment is adding cannabis (marijuana) smoke and Δ9-tetrahydrocannabinol (Δ9-THC) to the list of chemicals known to the state to cause reproductive toxicity (developmental endpoint) for purposes of the Safe Drinking Water and Toxic Enforcement Act of 1986 (Proposition 65)[1]. At a public meeting on December 11, 2019, the Developmental and Reproductive Toxicant Identification Committee (DARTIC) in its official capacity as the “state’s qualified experts” determined that cannabis (marijuana) smoke and Δ9-tetrahydrocannabinol (Δ9-THC) were shown to cause reproductive toxicity based on the developmental endpoint. Regulations for the listing of chemicals by the DARTIC are set out in Title 27, California Code of Regulations, section 25305(b)(1).

A complete, updated Proposition 65 chemical list is available on the OEHHA website at https://oehha.ca.gov/proposition-65/proposition-65-list.

A video of the Developmental and Reproductive Toxicant Identification Committee meeting.

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Footnotes and References

[1] The Safe Drinking Water and Toxic Enforcement Act of 1986, codified at Health and Safety Code section 25249.5 et seq., commonly referred to as “Proposition 65”.

[2] Title 27, Cal. Code of Regs., section 25302 et seq.