Business Resources

Proposition 65 requires businesses to provide clear and reasonable warnings before exposing individuals in California to chemicals on the Proposition 65 list.

Under Proposition 65, businesses are responsible for determining whether their products require warnings.

Warnings are not required in the following circumstances:

  • If individuals are not exposed to Proposition 65-listed chemicals.
  • If exposures are at or below safe harbor levels that OEHHA has established for many listed chemicals.
  • If a business can show that the exposure poses no significant cancer risk or is substantially below the level observed to cause reproductive health effects.

The information contained on this site is provided for informational purposes only and should not be considered legal advice on any subject matter. You may want to consult with a toxicologist, laboratory, legal counsel, or a trade association that is familiar with Proposition 65 for your specific situation.

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Safe Harbor Levels

OEHHA has established No Significant Risk Levels for many cancer-causing chemicals and Maximum Allowable Dose Levels for many chemicals causing reproductive toxicity. A warning is not required for a product causing an exposure at or below the applicable safe harbor level.

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Safe Use Determinations (SUD)

A SUD is a written statement which interprets and applies Proposition 65 to a specific set of facts in response to a request by a business or a trade group. Review issued SUDS and learn how to request a SUD.

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Information Letters

Letters that assist interested parties in understanding the application of Proposition 65.

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Gavin Newsom

California Governor
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Yana Garcia

Secretary for Environmental Protection
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