Proposition 65, officially known as the Safe Drinking Water and Toxic Enforcement Act of 1986, became law in November 1986, when California voters approved it by a 63-37 percent margin.
The California Office of Environmental Health Hazard Assessment (OEHHA) oversees implementation of Proposition 65. To learn more about OEHHA, please visit our homepage.
Reducing Exposure to Proposition 65-listed Chemicals: A California Success Story
Find out how Proposition 65 enables Californians to make informed decisions about their exposures to listed chemicals.
Learn more about Proposition 65 including what it is, which chemicals are on the list, and how enforcement is handled.
How Chemicals are Added to the Proposition 65 List
Learn about the four ways chemicals are added to the Proposition 65 list.