If you’re sourcing clamshells, trays, or bowls for a restaurant, cafeteria, or catering operation, the material you pick isn’t just a cost and durability decision anymore — it’s a compliance decision. Expanded polystyrene (EPS) foam and molded fiber (molded pulp) are the two most common choices for rigid foodservice containers, and they now sit on very different sides of a fast-moving regulatory line.
This guide breaks down where each material stands with state and local law, what certifications actually mean, and the PFAS issue that affects molded fiber specifically, so you can choose packaging that won’t get flagged by a health inspector, a customer, or your own supply chain audit.
Quick Answer
Molded fiber is currently the lower-compliance-risk choice: it isn’t the target of the EPS-specific bans spreading across the country, and major brands now offer versions independently certified as compostable with no intentionally added PFAS. EPS foam is legal in much of the U.S. but is banned or being phased out in a growing list of states and cities, and it’s rarely accepted in curbside recycling programs.
Where EPS Foam Stands Legally
A double-digit list of states — including California, Colorado, Maine, Maryland, New Jersey, New York, Oregon, Rhode Island, Vermont, Virginia, and Washington — have passed laws restricting or banning EPS foodservice foam, and more than 100 cities and counties (New York City, Washington D.C., Seattle, Portland, San Francisco, Chicago, Boston, and Honolulu among them) have their own ordinances, some older than the state laws. Virginia is a good example of how these rollouts work in practice: its ban started with larger chains in mid-2025 and expanded to cover every food vendor statewide as of July 1, 2026.
The core problem regulators cite is end-of-life, not food safety — EPS is lightweight, breaks apart easily, and has little to no market for recycling, so most curbside programs don’t accept it (a limited number of drop-off programs exist, concentrated in parts of California). If you operate in multiple states or ship packaging to multiple locations, treat EPS as a shrinking option and check both the state law and the specific city/county ordinance, since local rules frequently move faster than state ones.
Molded Fiber’s Own Compliance Hurdle: PFAS
Molded fiber isn’t caught up in the EPS bans, but it has its own regulatory history: manufacturers historically used fluorinated chemicals (PFAS) in molded pulp to make it grease- and water-resistant. That changed starting in 2019-2020, when the Biodegradable Products Institute (BPI) adopted the same limit used by the European compostability standard EN 13432 — no more than 100 parts per million of total fluorine in the finished product — and added a requirement that manufacturers formally state there is no intentionally added PFAS, in order to keep BPI Certified status. Several states — including Vermont, Minnesota, Maryland, Connecticut, Colorado, Hawaii, Oregon, and Rhode Island — have since passed their own laws banning intentionally added PFAS in food packaging, with effective dates already passed in most of them.
In response, major suppliers reformulated: Eco-Products’ Vanguard line, Genpak’s Harvest Fiber line, and Sabert’s Pulp Plus and Pulp Ultra lines are all BPI Certified without added PFAS. The takeaway for buyers is that ‘molded fiber’ and ‘compostable’ aren’t automatically the same claim — compostability for coated or lined fiber products is formally verified under ASTM D6868, and you want a supplier that can show a current BPI certificate (or equivalent) plus a no-added-PFAS statement, not just a product that looks like plain cardboard.
Tips / Common Mistakes
Don’t assume a fiber product is compostable or PFAS-free just because it looks ‘natural’ — ask the supplier for the BPI certificate or ASTM D6868 documentation and a written no-intentionally-added-PFAS statement, and keep it on file in case a health department or customer asks.
Don’t assume EPS is fine just because your city hasn’t banned it yet — many bans arrived with phased deadlines (larger chains first, then everyone), so check the compliance calendar for every state and municipality where you operate, not just the headline law.
Don’t market packaging as ‘compostable’ to customers unless your local municipal or industrial composting program actually accepts it — certification confirms the material can compost under proper conditions, not that your city’s program will take it curbside.
Don’t switch materials without checking grease and moisture performance — some uncoated molded fiber products handle wet or oily food less well than foam or PFAS-free coated alternatives, so test with your actual menu before a full rollout.
Explore more: more foodservice packaging compliance guides.
Molded Fiber vs. EPS Foam Packaging FAQs
Is EPS foam foodservice packaging illegal everywhere?
No. It’s banned or restricted in a growing list of states and cities, but it remains legal to sell and use in most of the country. Check both your state law and your specific city or county ordinance, since local rules often go further than state ones.
Is all molded fiber packaging compostable?
No. Only molded fiber products independently certified — typically to ASTM D6868 through a program like BPI — are verified compostable. Uncertified molded fiber may still be landfill-only despite its paper-like appearance.
Does molded fiber packaging still contain PFAS?
Leading manufacturers reformulated to remove intentionally added PFAS, especially after BPI adopted a 100 ppm total-fluorine limit along with newer state PFAS-in-food-packaging laws. Ask any supplier that doesn’t explicitly advertise a no-added-PFAS or BPI certification claim to confirm it in writing.
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Photo: DMahalko, Dale Mahalko, Gilman, WI, USA — Email: dmahalko@gmail.com / Public domain, via Wikimedia Commons.