Sustainability Legislation 5 min read

Is Styrofoam Recyclable in California? What Food Businesses Need to Know

Is Styrofoam recyclable in California? Almost never. Foam foodware is garbage in most cities, and foam cups and clamshells are banned from sale statewide.

SafraNovember 12, 2026

White Styrofoam foam clamshells stacked next to molded fiber bagasse clamshells on a restaurant counter

Is Styrofoam recyclable in California? In practice, almost never. Most curbside programs send foam cups, clamshells, and trays to the garbage, not the blue bin. Since January 1, 2025, foam foodware cannot be sold or distributed in the state at all.

Here is the short version for a busy kitchen:

Styrofoam is a brand name. The white foam in cups and clamshells is expanded polystyrene, or EPS, a plastic marked with resin code 6.
SB 54 required EPS producers to prove a 25 percent recycling rate by January 1, 2025. CalRecycle says that rate has not been met.
As a result, EPS cups, plates, bowls, clamshells, trays, and lids are banned from sale and distribution statewide.
The bar keeps rising: 30 percent in 2028, 50 percent in 2030, and 65 percent in 2032.
CalRecycle can fine a company up to $50,000 per day for each violation.
Clean block foam is still accepted at a handful of Bay Area drop-off sites. Food-soiled foam is not.

White foam clamshells next to molded fiber clamshells on a restaurant counter.

Why is Styrofoam so hard to recycle in California?

Styrofoam can be recycled in theory and rarely is in real life. Three things get in the way:

It is mostly air. A truckload weighs very little, so hauling it loose rarely pays. One recycler in the StopWaste guide compresses foam as much as 90 to 1 before shipping it.
Food ruins it. San Francisco only accepts foam that is free of debris and has never touched raw meat or fish. That rules out most used foodware.
Few curbside programs take it. In Alameda County, the StopWaste guide lists foam foodware as garbage in every city it covers, Fremont included.

The state put a number on the problem. Under Public Resources Code section 42057, producers had to show that at least 25 percent of EPS was being recycled. CalRecycle reports that the requirement has not been met.

Further reading: SB 54 packaging law in plain English and compostable vs biodegradable vs recyclable labels.

Can you put Styrofoam in the recycling bin in the Bay Area?

Usually not. Here is what the local guides say as of November 2026:

Curbside garbage bin with Styrofoam takeout beside a recycling bin

In most Bay Area cities, foam foodware goes in the garbage, not the blue bin.

San Francisco: the SF Environment guide says foam blocks need special handling and should not go in any bin. Clean, solid blocks are free to drop off at the Recology San Francisco Transfer Station. Meat trays, packing peanuts, and pellets are not accepted.
Alameda County: curbside foam foodware is garbage. Newby Island in Milpitas takes foam marked PS 6 for a fee, and only when it is bagged, clean, and rinsed.
Block foam from deliveries: the StopWaste block foam list includes a Union City recycler that charges 65 cents per pound. El Cerrito takes clean white blocks from its own residents on Thursdays.

Clean white Styrofoam foam blocks left from an equipment delivery

Clean block foam from a delivery may be accepted at a drop-off; food-soiled foam is not.

Rules vary by hauler, so check the sorting guide from your own hauler before you decide. If the guide does not name foam, use the garbage. Guessing wrong puts trash in the recycling stream.

Is Styrofoam banned in California?

For foodware, yes. CalRecycle states that statewide sales and distribution restrictions have been in place since January 1, 2025. The ban covers:

Cups, plates, and bowls
Hinged containers and clamshells
Trays, lidded containers, and lids

It does not cover packing peanuts, void fill, ice chests, sports equipment, or household insulation.

Enforcement is active. In December 2025 the California Attorney General sent producers an enforcement advisory. CalRecycle also runs an EPS Public Reporting System, where anyone can report foam foodware seen in a store or restaurant.

Local rules stack on top. StopWaste notes that most cities already have their own foam takeout bans, and the San Mateo County foodware ordinance sets fiber-based, PFAS-free rules for restaurants there.

What should a restaurant do with leftover Styrofoam?

Stop reordering. Foam cups and clamshells can no longer be sold or distributed in California. We pulled them from our own shelves.
Check your city ordinance before serving from old stock. The state ban targets producers, but many cities prohibit serving food in foam.
Put used foam in the garbage. Curbside programs here do not take it, and it is never compostable.
Take clean block foam to a drop-off site when an equipment delivery leaves you with enough to justify the trip.
Replace foam one SKU at a time, starting with your highest-volume container.

Restaurant back room swapping leftover Styrofoam stock for fiber clamshell cases

Replace leftover foam stock with fiber cases, starting with the highest-volume container.

What can you use instead of Styrofoam?

Every foam item has a direct replacement. These are the swaps we deliver most, with case counts from our hinged containers shelf:

Bagasse clamshells, PP clamshells, fiber bowls, and paper hot cups as Styrofoam replacements

Common foam replacements: bagasse clamshells, PP clamshells, fiber bowls, and paper hot cups.

Molded fiber clamshells: bagasse clamshells in 6 by 6 inch (500 per case), 8 by 8 inch (200 per case), and 9 by 9 inch (200 per case).
PP clamshells: white polypropylene clamshells in 6 by 6 inch (250 per case) and 8 by 8 inch (150 per case) for hot and saucy food.
Fiber bowls: compostable fiber bowls for soups, grains, and salads.
Paper hot cups: paper hot cups in place of foam coffee cups. Our paper vs plastic cup guide covers the tradeoffs.

Fiber is only compostable where a facility accepts it, so read our honest answer on composting access before you advertise it. Case pricing moves with order size, so ask for a quote at your volume.

Frequently asked questions about Styrofoam recycling

Does the number 6 in the arrows mean Styrofoam is recyclable?

No. The 6 only identifies the plastic as polystyrene. It was never a promise that your hauler takes it. Our SB 343 labeling guide covers the California rules for the chasing arrows symbol.

Are packing peanuts and foam coolers banned too?

No. CalRecycle excludes packing peanuts, void fill, and ice chests from the foodware ban. They are still hard to recycle. The San Francisco drop-off does not take peanuts at all.

Can Styrofoam go in the compost bin?

Never. EPS is plastic and does not break down in a compost facility. Only certified compostable items belong in the green bin, and only where your hauler accepts them.

Green compost bin holding only fiber packaging, not Styrofoam

Styrofoam never goes in the compost bin; only accepted fiber items belong there.

Final thoughts

Is Styrofoam recyclable in California? Not in any way a kitchen can rely on, and for foodware the question is settled: it is banned. The practical move is to get foam off your order guide and switch to a material your city accepts.

Our Fremont warehouse lists 31 hinged containers this month, 11 of them molded bagasse fiber, alongside the items in our compostable packaging guide. Browse the catalog or become a customer, and we will match your old foam SKUs to replacements we have in stock.

Sources consulted