Polystyrene Has a Recycling-Rate Problem—and a Denominator Problem

A 31% recycling rate and a rate below 2% can both be defensible. The difference is what is being counted—and processors need to know before making claims or comparing materials.

Polystyrene recycling statistics can sound irreconcilable. A June 2026 report from the Polystyrene Recycling Alliance cites a 31%North American recycling rate for expanded-polystyrene transport packaging. California’s January 2026 Material Characterization Study reports recycling rates below 1% for several foamed-PS packaging categories and below 2% for several solid-PS categories.

Neither number should be presented as “the polystyrene recycling rate.” They measure different products, places and recovery systems.

Transport packaging is not food service packaging

The 31% figure applies to EPS transport packaging across North America. That stream includes protective packaging that can be relatively clean, concentrated at businesses and collected through dedicated programs. The alliance report says its figure is based on EPS Industry Alliance data for 2022. The Polystyrene Recycling Alliance is an industry-funded initiative of the Plastics Industry Association; its facility and end-market research was conducted by consulting firm Resource Recycling Systems. Readers should understand both the scope and the sponsorship.

California’s figures cover specific packaging categories in one state, use 2024 state data and test whether material is collected and sorted through jurisdictional systems. Foamed food service items face a different reality: dispersed generation, food contamination, low weight per piece and limited curb side acceptance. California also notes that its evaluation does not necessarily determine whether material reaches a responsible final end market.

The denominator changes the answer

A recycling rate requires a numerator—material recovered—and a denominator—material generated or sold. Change the geography, year, product category or channel and both can change. “EPS” may mean clean appliance-protection blocks in one study and cups, trays and takeout containers in another. Combining them erases the operating conditions that determine whether recovery works.

The same caution applies to access. The alliance report estimates that rigid PS recycling access reaches roughly 30% of Americans after applying its methodological correction, which supports a “check locally” message rather than a nationwide recyclability claim. Access is not the same as participation, collection, reprocessing or verified use in new products.

Why processors should care

Processors increasingly encounter recyclability claims, extended-producer-responsibility fee schedules and customer scorecards that operate at the product-category level. A converter that supplies clean, business-to-business EPS transport packaging may have a credible takeback or drop-off pathway that bears little resemblance to the pathway for a foamed foodservice package. Conversely, a strong result for transport packaging cannot automatically support a claim about every PS format.

Before repeating a recycling statistic, ask four questions: What exact product is included? What geography and year are covered? Is the denominator sales, generation or material available for recycling? And does “recycled” mean collected, processed or sold into a verified end market?

Polystyrene does have a recycling-rate problem. It also has a language problem. Better definitions will not create collection capacity, but they will help processors invest—and communicate—where the system actually works.

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