Prop 65 Warning Compliance Checklist
California's Safe Drinking Water and Toxic Enforcement Act, known as Proposition 65, requires a clear and reasonable warning before knowingly exposing people to listed chemicals. This checklist helps a manufacturer or seller walk through the decision in order.
0 of 28 items complete
8 critical items still open - these are the highest-risk gaps.
Scope and applicability
Chemical review
Exposure assessment
Warning content and placement
Records and monitoring
Every critical item should be answered before shipping into California. This checklist is a general aid and not legal advice. Confirm warning text and thresholds with qualified counsel and the current regulations.
Keep product compliance data in one place
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How to use the checklist
Work from top to bottom. Start with scope, because a business with fewer than ten employees or a product never sold into California is outside the warning duty. Next review your materials against the OEHHA list, then judge exposure. Tick the items you have evidence for and keep the supporting files. Export the list to PDF so the review can be signed off and filed with the product record.
The method behind it
A warning is required when a product exposes a consumer to a listed chemical at a level above the safe harbor level, unless another exemption applies. For carcinogens the no significant risk level is set at a one in 100,000 lifetime risk over 70 years. For reproductive toxicants the maximum allowable dose level is generally one thousandth of the no observable effect level. The 2016 regulations, effective in 2018, set out safe harbor warning content and methods.
Common mistakes
Many companies add a blanket warning to every product to avoid risk. That can create customer concern and does not replace the review. Others rely on a supplier statement that a part is Prop 65 free without any data. Enforcement is often through private plaintiffs who send a 60-day notice, so records matter.
- Reviewing only the finished product and not the components
- Using old warning wording from before the 2018 rules
- Missing the warning on online listings
- Not rechecking the list when OEHHA adds chemicals
Frequently Asked Questions
Who has to comply with Prop 65?
Businesses with ten or more employees that sell or distribute products or operate facilities in California, with some exemptions. Manufacturers, importers and retailers can all carry responsibility, so contracts often assign who provides the warning.
What does a Prop 65 warning say?
The current safe harbor format begins with a warning symbol and the word WARNING, states that the product can expose you to a named chemical known to cause cancer or reproductive harm, and points to the OEHHA website. Check the regulations for exact wording.
Is a warning always required?
No. If exposure is below the safe harbor level and the chemical is not intentionally added at a harmful level, no warning may be needed. You need data to support that conclusion, and the burden of proof is on the business.
What happens if I do not warn?
A private party or the Attorney General can serve a 60-day notice of violation and sue for civil penalties. Most cases settle, often with a warning commitment and fees. Keep your assessment files ready.
If your product composition data sits in the ERP and supplier documents, we can help your team ask grounded questions over it without moving it off-site.
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