By Abhishek Shetty | Tue Jan 10 2023 | 2 min read

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California’s Proposition 65 (officially the Safe Drinking Water and Toxic Enforcement Act of 1986) is one of the most stringent chemical safety laws in the U.S., and it directly impacts electronics manufacturers selling into California. If your products contain chemicals known to cause cancer or reproductive harm—and those chemicals can result in consumer or workplace exposure—you’re legally required to provide a clear warning.

As of 2025, new updates to Prop 65 labeling rules are reshaping how electronics brands must disclose chemical risks. This blog explains the basics, highlights current updates, and gives manufacturers the checklist they need to stay compliant.

What Triggers a Prop 65 Warning?

A Prop 65 warning is triggered not by the presence of a listed chemical alone, but by the potential for exposure to that chemical above a defined risk level.

Common Chemicals in Electronics That May Require Prop 65 Warnings

  • Lead (used in solder)
  • Phthalates (DEHP, DBP, BBP) in cables, plastics, or coatings
  • Cadmium, Nickel, Flame Retardants (TBBPA)

If a listed chemical is present and exposure may occur during regular use, repair, disposal, or foreseeable misuse—you need a warning.

  • 2025 Updates to Short-Form Prop 65 Warning Requirements

In January 2025, the California Office of Environmental Health Hazard Assessment (OEHHA) amended Prop 65 short-form warning label requirements.

  • What Changed:
  • Chemical Name Requirement: Short-form warnings must now include at least one listed chemical.
  • Label Visibility: Must appear prominently before purchase—in-store and online.
  • Grace Period: Products labeled before Jan 1, 2028 can continue using legacy short-form warnings.
  • New Short-Form Format Example:

> ⚠️ WARNING: This product can expose you to lead, which is known to the State of California to cause cancer and birth defects. For more information, go to www.P65Warnings.ca.gov.

See OEHHA FAQs →

Prop 65 Compliance Checklist for Electronics Manufacturers

  • Assess chemical exposure in every product and material (not just presence)
  • Label with specificity: Name the chemical if you use a short-form warning
  • Include warnings in online listings (webshop, Amazon, etc.)
  • Document Safe Harbor evaluations—for NSRL (cancer) or MADL (reproductive harm)
  • Coordinate with suppliers to validate substance data in components
  • Maintain compliance records for at least 3–5 years

Penalties for Non-Compliance

  • Civil penalties up to \$2,500 per day, per violation
  • Lawsuits from private enforcers (including attorneys and NGOs)
  • Product removals from shelves or Amazon
  • Damaged brand trust and legal costs

How Regilient Helps Electronics Brands Stay Prop 65 Compliant

Regilient simplifies chemical compliance for manufacturers with:

  • SVHC & Prop 65 chemical screening
  • Automated exposure risk alerts
  • Short-form label validation workflows
  • Supply chain documentation tools (FMD, SDS collection)

Request a Demo to automate Prop 65 labeling and risk assessments

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CA Proposition 65 Requirements for Manufacturers of Complex Products in California

What is California Proposition 65 and who needs to comply with it?
California Proposition 65 is a regulation that requires businesses to provide clear warnings if their products expose consumers to chemicals known to cause cancer, birth defects, or reproductive harm. Any business selling into California whether located in the U.S. or internationally must comply.
Does Prop 65 apply to products sold online to California customers?
Yes, Prop 65 applies to both physical and online sales. If your product is available to California consumers through e-commerce or third-party platforms, you are required to ensure proper warning labels are included before point of sale or delivery.
How do manufacturers know if their product contains a Prop 65-listed chemical?
Manufacturers must assess their product formulations and materials against the official Prop 65 list published by California’s OEHHA . This usually involves requesting full material declarations from suppliers or conducting laboratory testing.
What does a Proposition 65 warning label need to include?
A compliant warning label must clearly state that the product exposes users to one or more chemicals known to the State of California to cause cancer or reproductive harm. It should follow OEHHA’s safe harbor language and be easily visible to consumers before purchase.
What are the risks of not complying with California Prop 65?
Non-compliance can lead to civil penalties of up to $2,500 per day, lawsuits from private enforcers, product recalls, and reputational damage. Many enforcement actions begin with missing or incorrect warning labels.
Which industries are most impacted by Prop 65 compliance requirements?
Industries such as electronics, automotive, consumer goods, and packaging are heavily affected due to their frequent use of metals, plastics, adhesives, and pigments that may contain Prop 65 chemicals.
How can a company efficiently manage ongoing Prop 65 compliance?
Companies can streamline compliance by using automated platforms like Acquis Compliance to collect supplier data, monitor chemical updates, manage warning obligations, and ensure up-to-date documentation across their product lines.