Global Import Agent
Global compliance guide

Prop 65 Assessment Guide for UK Importers

· Reviewed by the Global Import Agent team

Proposition 65 assessments for UK importers and e-commerce sellers placing products on the California market.

How Global Import Agent Can Help

As specialists in US market access for UK businesses, we provide end-to-end Prop 65 assessment services that integrate with your import operations. Our team coordinates with accredited laboratories, manages supplier certification processes, and provides clear guidance on California’s complex regulatory landscape.

We understand that product safety testing can be daunting for UK importers, particularly when dealing with California’s annually updated chemical list and evolving enforcement patterns.

Our comprehensive approach covers everything from initial risk assessment to ongoing compliance monitoring, helping you protect your business from costly bounty hunter litigation whilst maintaining access to California’s lucrative consumer market.

  • Chemical Risk Assessment – Evaluate products against 900+ Prop 65 listed chemicals including lead, cadmium, BPA, phthalates, and formaldehyde
  • Arrange accredited testing with NSRL and MADL analysis where appropriate
  • Obtain upstream supplier documentation and chemical characterisation data from your supply chain

Expert Proposition 65 Compliance for UK Importers

California’s Safe Drinking Water and Toxic Enforcement Act of 1986 creates complex compliance obligations for any business selling consumer products to California residents, including UK-based online sellers.

The regulation covers consumer products, food packaging, supplements, electronics, and textiles—with enforcement intensifying through private-enforcement claims against businesses.

Our regulatory compliance expertise helps you navigate the technical requirements of California Code of Regulations Title 27 Division 4 Chapter 1, including determining when safe harbor levels apply and whether warning labels are required.

We work with your existing import processes to ensure Prop 65 assessment becomes a part of your US market access strategy, protecting your business from the significant legal and financial risks of non-compliance.

  • Assessment of No Significant Risk Level (NSRL) thresholds
  • Maximum Allowable Dose Level (MADL) calculations
  • Certificate of compliance documentation
  • Reformulation assessment recommendations
  • Ongoing chemical list monitoring for new substances

What We Arrange And Manage End-To-End

1) Initial Product Risk Evaluation

We begin with a comprehensive analysis of your product categories against California’s regulated chemical list, identifying high-risk items that require immediate assessment.

  • Product classification against Prop 65 chemical categories
  • Supply chain risk assessment
  • Priority testing recommendations

2) Laboratory Testing Coordination

We arrange accredited third-party testing through our network of certified laboratories, managing the entire process from sample submission to results interpretation.

  • CPSC-recognised laboratory selection
  • Chemical characterisation testing
  • Safe harbor level analysis

3) Supplier Documentation Review

Our team coordinates with your suppliers to obtain necessary chemical information and upstream certifications, essential for comprehensive compliance assessment.

4) Compliance Determination

We analyse test results against NSRL and MADL thresholds, providing clear guidance on warning requirements and compliance obligations under California Environmental Protection Agency guidelines.

5) Ongoing Monitoring Support

We provide continued support as California adds 20-30 new chemicals to the Prop 65 list annually, ensuring your products remain compliant with evolving requirements.

Complete Prop 65 Assessment Package

Chemical Risk Analysis

Comprehensive evaluation against California’s 900+ regulated substances including carcinogens and reproductive toxicants.

Laboratory Testing Coordination

Professional management of accredited testing with detailed results interpretation and compliance recommendations.

Supplier Certification

Coordination of upstream documentation and chemical characterisation data from your supply chain partners.

Safe Harbor Assessment

Expert analysis of NSRL and MADL thresholds to determine if your products qualify for safe harbor exemptions.

Warning Label Guidance

Clear recommendations on California warning requirements and compliant labelling strategies for your products.

Ongoing Compliance Monitoring

Regular updates on chemical list changes and evolving enforcement patterns to maintain long-term compliance.

What Is Prop 65 Assessment?

Proposition 65 assessment is the process of evaluating consumer products for the presence of chemicals listed under California’s Safe Drinking Water and Toxic Enforcement Act. This assessment determines whether products require warning labels when sold to California consumers and helps businesses avoid significant penalties for violations.

The assessment involves testing for over 900 chemicals including heavy metals, phthalates, flame retardants, and other substances known to cause cancer or reproductive harm.

For UK importers, this process has become essential as California enforcement has intensified, with bounty hunter litigation targeting businesses that sell online to California residents regardless of their physical location. Before assessment checklist:

  • Identify all product materials and components
  • Gather supplier chemical disclosure information
  • Determine California sales channels and volumes
  • Review existing product testing documentation
  • Assess product categories against high-risk chemical groups

Our assessment process:

  • Initial risk evaluation and testing strategy
  • Accredited laboratory testing coordination
  • Safe harbor level analysis and interpretation
  • Compliance determination and recommendations
  • Ongoing monitoring for chemical list updates

Unlike standalone testing labs, we integrate Prop 65 assessment with your broader import operations, including FDA compliance and customs clearance. This comprehensive approach supports US market access for your products. We understand the unique challenges facing UK importers navigating US regulations.

Our team provides practical, cost-effective solutions that balance compliance requirements with your commercial objectives and profit margins. California adds new chemicals to Prop 65 annually, and enforcement patterns constantly evolve. We provide ongoing monitoring and support to ensure your products remain compliant as regulations change.

Navigate California’s complex Prop 65 requirements with confidence through our expert assessment services. Our team provides practical, cost-effective solutions that integrate with your import operations, protecting your business from costly litigation whilst ensuring continued access to the US market.

Our service: UK food and beverage import support

Frequently asked questions

Prop 65 Assessment Guide for UK Importers | GIA

Requirements vary by product and destination. These answers outline the starting point for the questions we receive most often.

Ask our team

What products require a Prop 65 assessment?

Any consumer product sold to California residents that may contain Prop 65 chemicals requires assessment. High-risk categories include electronics, textiles, food supplements, household products, and items with metal components. Online sales to California trigger compliance requirements regardless of your business location.

How much does a Prop 65 assessment cost?

Third-party laboratory testing costs vary with product complexity and the chemicals tested. Our service includes risk assessment, testing coordination and compliance guidance.

Do UK companies need Prop 65 compliance?

Yes, if you sell products to California consumers through any channel including Amazon, eBay, or direct online sales. California’s jurisdiction extends to any business that ships products to the state, making compliance essential for UK importers accessing the US market.

What chemicals are tested in Prop 65 assessment?

Testing focuses on the 900+ chemicals listed under Prop 65, including lead, cadmium, BPA, phthalates, formaldehyde, and flame retardants. The specific chemicals tested depend on your product materials and risk assessment, with California adding 20-30 new substances annually.

How long does a Prop 65 assessment take?

Initial risk assessment takes 3-5 business days, whilst laboratory testing typically requires 2-3 weeks depending on the chemicals tested. Rush testing is available for time-sensitive launches, and we coordinate the entire process to minimise delays to your import timeline.

What happens if you fail a Prop 65 assessment?

Products containing regulated chemicals above safe harbor levels require warning labels but can still be sold legally. We provide guidance on compliant warning strategies and, where necessary, can recommend reformulation options or alternative suppliers to achieve compliance.

Consultation

Tell us what you need to import.

Share your product, target market and compliance question. A member of our team will respond promptly.

Scope your product and target market
Identify the applicable regulatory route
Receive a clear proposal and next steps