What is California Proposition 65?

California Proposition 65, also known as the Safe Drinking Water and Toxic Enforcement Act of 1986. Prop65 requires businesses to provide warnings to Californians about significant exposures to chemicals that can cause cancer, birth defects, or other reproductive harm. The aim of this law is to ensure that people are informed about potential health risks associated with certain chemicals and make educated choices about the products they use or are exposed to.

What are the challenges associated with prop65 regulations?

Identifying the potential risk from a continually expanding list of chemicals, which currently includes over 900 substances.

Collaborating with the supply chain to identify and address any parts or components that require attention from a Prop65 perspective.

Staying vigilant and responding promptly to any changes or updates in the Prop65 regulations.

Analyzing and meeting the requirements for providing Prop65 warning labels when necessary.

How do you comply with California Prop65?

Each product requires specific testing to determine whether it requires a warning label. A warning label is applied to a product to indicate that it has the potential to cause cancer or reproductive harm.

prop65 Services from Horiaki


Evaluate the customer's Bill of Materials (BoM) to identify any missing information, such as supplier details and parts information.


Engage with the customer's product teams to obtain the necessary details that are currently lacking.


Compile a list of supplier parts that are not yet included in the IMDS database.


Identifying and determining the specific requirements for warning labels.


Facilitating chemical testing and analysis in collaboration with APA's trusted third-party partners.


If a warning is provided on a product label, workplace, business, or rental housing, it indicates that the entity responsible for issuing the warning is aware or believes that individuals may be exposed to one or more chemicals listed as potentially harmful.

The list encompasses a diverse array of chemicals, both natural and synthetic, which can be found as additives or ingredients in various products like pesticides, household items, food, drugs, dyes, and solvents. These chemicals may also be present in manufacturing and construction processes, or generated as byproducts, such as from vehicle emissions.

If a business fails to provide required notices under Proposition 65, they may face penalties of up to $2,500 per violation per day.

Yes, APA’s expertise lies in assisting our customers with labeling requirements.

APA will conduct a webinar or conference call with suppliers to provide educational sessions on California Prop65.