Can You Put Compostable Coffee Cups in Food Waste?
Last spring a distributor in Leeds emailed a photo of forty cases of our 8 oz single-wall cups on her loading bay, still wrapped. The council’s food waste round had refused them at the kerbside and the depot turned them away twice. Her question: “Your certificate says compostable. Why won’t anyone take them?”
The word on the box is marketing. The word the driver checks is a scheme name on a council spreadsheet.
I run export sales at a bagasse tableware plant in Qingdao, about 2,500–3,000 tonnes a year. I have shipped cups against eight certification labels and watched buyers lose money on the wrong one.
The two questions a waste contractor actually asks
A food waste collection ends at a specific plant with specific equipment and a compost output it must be able to sell. The operator asks whether the cup breaks down fast enough in the real process. In-vessel composting runs around 60–70 °C for weeks; anaerobic digestion (AD) runs wet at roughly 35–40 °C and sends digestate to farmland. Different chemistry, different verdicts. Then it asks whether a scheme the operator may accept has confirmed it. Most UK and EU facilities work from a list of approved marks.
EN 13432 is not the same as OK Compost HOME
EN 13432 is the European standard for packaging recoverable by composting: 90% disintegration within 12 weeks, 90% biodegradation within 6 months, plus heavy-metal limits. ASTM D6400 is the US counterpart. Both are test standards; a lab tests, a body certifies.
OK Compost INDUSTRIAL (TÜV Austria) maps to EN 13432 and assumes a managed facility. OK Compost HOME is a separate, stricter test at ambient temperature over up to 12 months. Seedling is the European Bioplastics mark tied to EN 13432; BPI Compostable sits in the ASTM D6400 family; AS 4736 and AS 5810 cover Australia.
Our cups hold EN 13432 and ASTM D6400. The plain single-wall SKUs also hold OK Compost HOME. The PLA-lined ones do not. That line decides whether the cup goes in the bin.
Which cups pass which gate
| Cup construction | Cert held | Home compost | Industrial / IVC | Anaerobic digestion | Typical kerbside FW |
|---|---|---|---|---|---|
| Bagasse, unlined, 210–260 g/m² | EN 13432, D6400, OK Compost HOME | Usually yes | Yes | Often excluded | Only where council lists the mark |
| Bagasse + PLA liner, 30–40 µm | EN 13432, OK Compost INDUSTRIAL | No | Yes at most IVC sites | Usually excluded | Rarely |
| Bagasse + water-based coating, 12–18 µm | EN 13432 (SKU-dependent) | Varies | Yes where listed | Site-dependent | Rarely |
The cup with the plainest story has the widest acceptance; the one with the better performance story has the narrowest.
Why PLA liners trip the food waste bin
Our hot-drink liner is PLA at 30–40 µm, roughly 90 °C continuous and short peaks to 100 °C on an 8 oz cup. A water-based coating at 12–18 µm costs less but softens sooner; we cap those at about 85 °C. PLA biodegrades inside the 12-week EN 13432 window at 60–70 °C. In a home heap at 20–30 °C it can sit for years, which is why it never carries OK Compost HOME.
AD is harder still: operators running 30–60 day retention and spreading digestate on fields often ban all disposable cups, because nobody sorts liner chemistry at the gate. Germany’s Bioabfallverordnung is the stricter example — compostability certification alone does not open the organic bin.
What EU and UK rules do and do not settle
The Single-Use Plastics Directive, (EU) 2019/904, does not ban compostable cups; it bans listed single-use plastic items and sets marking duties elsewhere. The Packaging and Packaging Waste Regulation, (EU) 2025/40, tightens reuse and compostability rules and makes tea bags, coffee pods and sticky labels compostable in controlled conditions. Cups are not on that list, so PWWR does not oblige any municipality to accept one. In the UK, PAS 100 covers compost quality and PAS 110 covers digestate — standards for the output, not the input. What counts is the mark on the council’s accepted list.
How to check before you order 20,000 cups
- Open the council’s food waste page and find the accepted packaging list. If there is none, email the waste team: “Do you accept EN 13432-certified single-use cups in the food waste bin?” Get it in writing.
- Ask where the material goes — IVC, AD or windrow. Acceptance differs by process.
- Ask for the certificate number, the scheme (TÜV, DIN CERTCO, BPI, ABA) and the expiry date.
- Assume city-centre kerbside rejection and price a commercial food waste round instead; many contractors take compostable foodservice ware where the council will not.
- If you cannot get a written yes, buy the unlined cup.
We run this check before cutting tooling. On our bagasse cups range it often ends with a switch from PLA-lined to unlined plus a sleeve, saving 6–9% per unit. For the certificate pack on a SKU, ask via our contact page and we will send the PDFs with scheme names spelled out. The material argument is on compostable vs biodegradable and is bagasse compostable.
When the honest answer is no
I told three buyers this year not to buy our cups for a food waste scheme: one in Birmingham, one in Rotterdam, one in Melbourne. In each case the operator took only EN 13432 material on commercial rounds, and the buyer wanted a retail claim for a café chain whose bins went to general waste. The cup would have composted; the claim would have been false where it mattered.
Where bagasse cups earn their place
Unlined bagasse cups work where a commercial food waste route exists, where the council lists the mark, or where the venue composts on site. They also work as a visible signal in markets legislating plastic-lined cups out, though the signal often outruns the disposal route. FOB or CIF from Qingdao, MOQ 20,000 pieces per SKU for stock items, 40–45 days for custom print. Get a physical sample before you promise anything to a council.
FAQ
Do compostable coffee cups go in the food waste bin in the UK?
Only if the council accepts the specific mark on that cup, and many accept no single-use cup at all. Check the accepted list and the processing route first. Unlined bagasse cups certified to OK Compost HOME have the best acceptance rate we have seen; PLA-lined cups mostly do not.
Can PLA-lined cups be composted at home?
No. PLA needs roughly 60–70 °C sustained to break down within the EN 13432 twelve-week window. At heap temperatures it persists far longer, which is why OK Compost HOME is a separate test it does not pass.
What is the difference between OK Compost HOME and OK Compost INDUSTRIAL?
Both are TÜV Austria marks testing different conditions. INDUSTRIAL corresponds to EN 13432 and assumes a managed facility. HOME tests degradation at ambient temperature over up to twelve months. A HOME cup also meets industrial requirements; the reverse is not true.
Does EN 13432 mean my cup is allowed in the bio-bin?
No. It is a test standard, not a disposal permit. Municipalities and contractors decide from their own lists, which may reference a scheme label rather than the standard. Germany’s organic waste ordinance shows certification alone is not enough.
Why would my council reject a certified compostable cup?
The plant may be AD and not want disposable ware, the contractor may be unable to separate cups at the gate, or there may be no approval pathway for single-use items at all. Ask which route the material takes.
Can I claim “compostable” on a menu or website?
Only in a way you can defend at the point of disposal. “Industrially compostable to EN 13432” is accurate and specific. Bare “compostable” invites a greenwashing complaint, and under (EU) 2025/40 the burden is yours to substantiate it for how the item is actually thrown away.
Rewriting a packaging spec sheet and unsure which certificate matches your disposal route? Send us the council list you are working from — we will tell you straight whether our cups fit it.
