On July 22, 2026, California's Office of Environmental Health Hazard Assessment (OEHHA) published draft regulatory text for its Prop 65 Omnibus 2026 pre-rulemaking package. The package covers eight topics, six of them substantive, and would reshape how businesses deliver Proposition 65 warnings, most notably for online sales and off-road vehicle parts.
This is pre-rulemaking draft text. No compliance obligation is triggered yet, and there is no effective date. That distinction matters for planning: companies have a window to review the draft, scope potential label and e-commerce changes, and file comments before OEHHA moves to formal rulemaking. For a broader view of the framework, see Certivo's California Proposition 65 framework page and the 2026 Prop 65 compliance overview.
Want to understand your current Prop 65 exposure across products and online listings before the rules change? Book a compliance risk assessment.
What the Prop 65 Omnibus 2026 Package Actually Changes
Proposition 65, the Safe Drinking Water and Toxic Enforcement Act of 1986, requires a "clear and reasonable" warning before knowingly exposing a person in California to a listed chemical, unless an exemption applies. The Omnibus 2026 draft does not add new chemicals. It changes how warnings are worded and delivered. Details are set out in OEHHA's official draft regulatory text.
The six substantive changes are summarized below. Because warning obligations attach at the product and channel level, teams managing multi-jurisdiction labeling and chemical and hazmat compliance should scope each change against their SKU and BOM data now, not after a final rule.
# | Proposed Change | Draft Section(s) | Who It Hits First |
|---|---|---|---|
1 | Tailored safe-harbor warning for off-road/off-highway parts naming phthalates and lead | New §§ 25607.54–.55 | Automotive, powersports, industrial equipment |
2 | Two-part internet warning: on-product AND on the display page | §§ 25600.2(b), 25602(b) | All online sellers into California |
3 | QR-code warnings expressly permitted | §§ 25601(c), 25602(a)(2) | Space-limited packaging |
4 | Short-form warning must name "one or more chemicals" | §§ 25603(b), 25607.2(b) | Consumer products using short-form |
5 | "Naturally occurring" food exemption narrowed for extracted/concentrated chemicals | § 25501(a)(3) | Food, botanicals, supplements |
6 | Committee-voting and Rule 100 technical changes | § 25302(f), Rule 100 | Procedural |
The Two-Part Internet Warning Is the Change With the Widest Reach
For most global manufacturers, the e-commerce amendment carries the broadest operational impact. Under the draft, a business selling into California through a website or app would need to provide both a warning on the product or its packaging and a warning displayed online before the customer completes purchase.
The online warning must appear on the product display page, through a clearly marked "WARNING" hyperlink, or otherwise prominently before checkout. A warning buried in general site content would not qualify. This codifies OEHHA's longstanding position that both an on-product and an online warning are required, a position most enforcers already take.
The practical challenge is coordination. The physical label lives with the manufacturer and contract packager; the display-page warning lives with the retailer or marketplace. Getting both right, per SKU, per listing, is a data problem. This is where BOM-level compliance intelligence and centralized product records reduce the risk of a listing and a label falling out of sync.
Prop 65 Omnibus 2026 two-part internet warning requirement for online product sales
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Off-Road and Off-Highway Parts Get a Named-Chemical Warning
New §§ 25607.54–.55 would create a tailored safe-harbor warning for parts used in off-road vehicles and off-road equipment, including ATVs, UTVs, and agricultural, construction, mining, and forestry equipment. The draft warning names specific chemicals rather than only a hazard endpoint.
Per the draft text, the tailored warning identifies exposure to chemicals such as phthalates and lead and provides handling guidance. The draft also specifies that if such a part is sold online or through a catalog, a compliant internet or catalog warning must accompany it.
For automotive manufacturing and heavy-equipment suppliers, this means warning content becomes tied to specific substances present in specific parts. Knowing which SKUs contain lead or phthalates, at the component level, becomes a prerequisite for accurate warnings. Substance-and-threshold visibility across the BOM, supported by materials and environmental compliance workflows, is the foundation for that.
QR Codes, Short-Form Wording, and the Food Exemption
QR-code warnings (§§ 25601(c), 25602(a)(2)). The draft expressly authorizes QR codes on labels, signs, and shelf tags. On scan, the code must link to a page carrying the full warning content, and the code must be accompanied by a short statement naming one or more chemicals. This gives businesses with limited packaging space a sanctioned option that previously existed only in informal guidance.
Short-form descriptor fix (§§ 25603(b), 25607.2(b)). The amendment aligns the short-form warning with the full-length warning so that it names one or more chemicals rather than only a toxicological endpoint. Companies relying on short-form warnings should expect to identify at least one triggering chemical per warning.
"Naturally occurring" narrowed (§ 25501(a)(3)). The draft clarifies that a listed chemical extracted or concentrated from a natural source may be present as a result of "human activity," even if its CAS number does not change. Food, botanical, and dietary-supplement companies that have relied on the naturally-occurring exemption for plant extracts should reassess whether a warning is now required.
Prop 65 Omnibus 2026 warning changes mapped to affected manufacturing industries
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What This Means for Executives and Compliance Teams
For the board and CEO, the strategic point is exposure, not urgency. Nothing is due yet, but California online-sales warnings and named-chemical parts warnings, if adopted, touch nearly every product sold into the state. Prop 65 enforcement is driven substantially by private "bounty-hunter" litigation, so warning defects convert directly into settlement risk.
For compliance and regulatory teams, the near-term action is to review the draft, decide whether to comment, and inventory which SKUs and listings would need updated warnings under each scenario. This is change management: tracking a proposal from draft through workshop, comment, and any future formal rulemaking. Proactive compliance risk management depends on catching these signals early rather than reacting to a final rule.
For supply chain and quality, the parts warning ties content to substances in components. Reliable warnings require knowing what is in each part, which points back to supplier declarations and material data. Certivo's product compliance features help connect supplier evidence to the products and listings that depend on it.
Struggling to see which products and listings a warning change would touch? Speak with a compliance specialist about mapping your Prop 65 exposure.
Timeline and What to Do Before the Comment Window Closes
Date | Event |
|---|---|
July 22, 2026 | OEHHA posts Omnibus 2026 draft regulatory text |
July 30, 2026 | Pre-regulatory public workshop |
September 8, 2026 | OEHHA-listed close of public comment period (some analyses cite Sept 7; confirm and file early) |
To be determined | Formal rulemaking, with a separate notice and comment period, if OEHHA proceeds |
⏳ There is no effective date. Any binding obligation would follow a future formal rulemaking, not this pre-rulemaking package. Companies should confirm the operative comment deadline on OEHHA's Omnibus 2026 page before submitting.
Preparation checklist:
📄 Review the draft text and identify every proposed change relevant to your channels and product lines.
🏭 Map which SKUs are sold online into California and would need a display-page warning.
🔗 Identify off-road/off-highway parts that contain lead or phthalates at the component level.
📊 Assess short-form warnings for whether a specific chemical can be named.
⚠️ For food and botanical products, reassess reliance on the naturally-occurring exemption for extracted or concentrated ingredients.
📌 Decide whether to file a comment, and do so ahead of the deadline.
How AI-Native Compliance Supports Prop 65 Warning Management
Warning accuracy under Prop 65 is a data and evidence problem: which chemical is in which part, in which SKU, on which listing, in which channel. When the rules change, teams need to answer that quickly across a large catalog.
Certivo is a system of record for product compliance, with CORA providing the embedded regulatory intelligence layer. Relevant capabilities include:
🤖 CORA-powered regulatory intelligence that monitors proposals like Omnibus 2026 and flags which product lines a change would affect, supporting continuous horizon scanning rather than periodic manual review.
📊 BOM-level substance and threshold mapping that links listed chemicals such as lead and phthalates to the specific components and finished products that carry them.
📄 AI document parsing and certificate validation that turns supplier declarations and test reports into structured, retrievable evidence for audit readiness.
🔗 Automated supplier data collection through portals, so the substance data behind a warning stays current across a multi-tier supply chain.
Certivo does not eliminate compliance risk or make a company "audit-proof." The objective is fewer surprises, faster evidence retrieval, and clearer visibility into which products a regulatory change touches. For related workflows, see how Certivo supports customer and industry-specific requirements and teams looking to expand into new markets faster.
Prop 65 sits alongside PFAS, REACH, RoHS, and TSCA obligations in most manufacturers' programs. Managing them from one centralized compliance data backbone is what makes change management sustainable as warning rules like Prop 65 Omnibus 2026 continue to evolve.
Get visibility into your Prop 65 and chemical-warning exposure across products and channels. Request a compliance review.
Lavanya
Lavanya is an accomplished Product Compliance Engineer with over four years of expertise in global environmental and regulatory frameworks, including REACH, RoHS, Proposition 65, POPs, TSCA, PFAS, CMRT, FMD, and IMDS. A graduate in Chemical Engineering from the KLE Institute, she combines strong technical knowledge with practical compliance management skills across diverse and complex product portfolios.
She has extensive experience in product compliance engineering, ensuring that materials, components, and finished goods consistently meet evolving international regulatory requirements. Her expertise spans BOM analysis, material risk assessments, supplier declaration management, and test report validation to guarantee conformity. Lavanya also plays a key role in design-for-compliance initiatives, guiding engineering teams on regulatory considerations early in the product lifecycle to reduce risks and streamline market access.
Her contributions further extend to compliance documentation, certification readiness, and preparation of customer deliverables, ensuring transparency and accuracy for global stakeholders. She is adept at leveraging compliance tools and databases to efficiently track regulatory changes and implement proactive risk mitigation strategies.
Recognized for her attention to detail, regulatory foresight, and collaborative approach, Lavanya contributes significantly to maintaining product compliance, safeguarding brand integrity, and advancing sustainability goals within dynamic, globally integrated manufacturing environments.