California Prop 65 and Foam-Control EPS


The California Safe Drinking Water and Toxic Enforcement Act of 1986, better known as Proposition 65, requires any business whose product can expose consumers in California to a chemical the state has determined as “known to cause cancer” to label their products with a warning about potential exposure. Proposition 65 requires the California EPA’s Office of Environmental Health Hazard Assessment (OEHHA) to maintain and update a list of chemicals known to the state to cause cancer. On April 22, 2016 OEHHA announced styrene would be listed as known to the state of California to cause cancer. This announcement was accompanied by a proposal to establish a no significant risk level (NSRL) for styrene exposure at 27μg/person/day.


This has enabled the EPS Industry Alliance to conduct finite analysis that verifies exposure from residual styrene in expanded polystyrene products are significantly below the proposed NSRL. As a result of work completed by EPS-IA, the majority of expanded polystyrene foam applications used by consumers will not require labeling under California Proposition 65.


Please see attached document from EPS-IA that provides complete details. The document is also available on the Foam-Control website at Foam-Control Design Resources