Navigate Prop 65 Compliance with Confidence and Clarity

California’s Proposition 65 (the Safe Drinking Water and Toxic Enforcement Act of 1986) requires businesses to provide warnings for significant exposures to chemicals known to cause cancer, birth defects, or other reproductive harm. With more than 900 chemicals now on the Prop 65 list, compliance can be challenging for manufacturers, distributors, and companies doing business in California. We provide end-to-end Prop 65 support, including compliance audits, chemical exposure assessments, Safe Harbor evaluations, and litigation support which help clients minimize risk and maintain compliance.
Service Specifics

Our California Proposition 65 Support Services

See how we help businesses assess obligations, implement strategies, and maintain compliance with California Proposition 65 requirements.

We evaluate facilities and product lines to identify Prop 65 applicability, exemptions, and compliance gaps.

Our experts perform in-depth chemical reviews, exposure modeling, and health risk assessments to determine the need for warnings or safe harbor applicability.

We assist with preparing and submitting notifications to ensure full regulatory compliance.

Trinity assesses chemical exposures against OEHHA Safe Harbor levels to determine when warnings are required.

We provide expert guidance for responding to 60-day Notices of Violation, as well as technical and regulatory support during litigation.

Our consultants help clients stay ahead of evolving Prop 65 requirements with strategic compliance planning and employee training.

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California Proposition 65 Support FAQs

Proposition 65, passed in 1986, requires businesses to warn Californians about significant exposures to chemicals known to cause cancer, birth defects, or reproductive harm. It also prohibits the discharge of such chemicals into drinking water sources.

Nearly any company doing business in California is subject to Prop 65, including manufacturers, industrial facilities, retailers, restaurants, distributors, hotels, agriculture, and more.

The Office of Environmental Health Hazard Assessment (OEHHA) maintains a list of more than 900 chemicals, ranging from solvents and dyes to food and drug byproducts, as well as emissions such as motor vehicle exhaust.

OEHHA sets Safe Harbor exposure levels for listed chemicals. Businesses whose product exposures fall below these thresholds are exempt from the warning requirement.

Trinity provides technical expertise, risk assessment, and litigation support to help clients respond effectively to NOVs and minimize enforcement risks.

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