Also known as the Safe Drinking Water and Toxic Enforcement Act of 1986, California Proposition 65 is a law that requires warning to consumers if a product exposes consumers to a wide variety of chemicals known by the State of California to cause cancer, birth defects, and/or other reproductive harm. Adopted amendments in September 2016, on how "clear and reasonable warnings" should be provided under Proposition 65, become operative on August 30, 2018. A pictogram – an exclamation mark inside an equilateral triangle – must also be included. Proposition 65 applies only in California.