Brand database
Coffee Pod Brand Microplastic Database (2026)
12 coffee pod brands audited for body material, hot-water-contact polymer, and estimated per-cup particle release. Plastic-bodied pods (Keurig K-Cups) release tens of thousands of particles per cup (Diaz-Basantes 2022); aluminum-bodied pods are 1–2 orders of magnitude lower; reusable stainless steel pods are essentially zero.
| Brand / System | Body | Per-cup estimate | Risk |
|---|---|---|---|
| Keurig K-Cups (standard) 92–96°C pressurised through PP wall, 20–30 s | #5 Polypropylene | tens of thousands of particles per cup | High |
| Keurig 2.0 K-Cups Recyclability change did not alter polymer chemistry | #5 Polypropylene (redesigned for recyclability) | Same as standard K-Cups | High |
| Nespresso Original ~25 ml espresso, ~25 s — smallest pod, shortest brew | Aluminum + food-grade polymer liner | 1–2 orders of magnitude less than K-Cups | Low |
| Nespresso Vertuo (espresso 40 ml) Centrifusion 6,000–7,000 rpm adds liner agitation | Aluminum + polymer liner | ~1.5–2× Original espresso | Medium |
| Nespresso Vertuo (Mug 230 ml) Larger pod + longer brew time = more liner contact | Aluminum + polymer liner | ~3–4× Original espresso | Medium |
| Nespresso Vertuo (Alto 414 ml) Largest Vertuo pod size; longest brew | Aluminum + polymer liner | ~4–5× Original espresso | Medium |
| illy iperEspresso (aluminum) Some retail SKUs use polymer-body instead — check | Aluminum capsule | Similar to Nespresso Original | Low |
| illy ESE (Easy Serving Espresso, paper) Paper-based pod; polymer is only in the seal | Paper + thin polymer hot-seal | Less data; estimated lower than plastic pods | Low |
| Lavazza A Modo Mio Outer collar plastic is not in hot-water path | Aluminum + plastic outer collar | Similar to Nespresso Original | Low |
| Halo Compostable Pods PLA is a synthetic polymer; data sparse | PLA + plant-fiber composite | Less data; estimated < K-Cups, unclear vs aluminum | Medium |
| Woken Compostable Pods Compostable claim is industrial only, not home compost | PLA + plant-fiber composite | Less data | Medium |
| Reusable Stainless Steel Pod (K-Cup compatible) One-time $10–25 cost; eliminates ~95% of pod-related release | 304 stainless + silicone gasket | Near-zero | Low |
Methodology
- Material disclosure: pulled from manufacturer spec sheets, recycling-symbol disclosure on the pod, and Keurig + Nespresso public material statements.
- Per-cup particle estimates: Diaz-Basantes et al. 2022 (Foods) measured plastic-bodied pods at “tens of thousands of particles per cup”. McGill 2022 (Hernandez et al.) reported up to 16 billion nanoplastics per cup specifically from Keurig K-Cups at 95°C. We use the lower end of the conservative range and note when an aluminum pod was extrapolated rather than directly tested.
- Risk tier: High = polymer body in full hot-water contact. Medium = aluminum with larger liner area or longer brew, OR compostable PLA where data is sparse. Low = aluminum with short brew + small pod, OR reusable stainless.
Primary sources
- Diaz-Basantes MF, Conesa JA, Fullana A (2022). Microplastics released from disposable coffee capsules upon use. Foods (MDPI).
- Hernandez LM, Xu EG, Larsson HCE, Tahara R, Maisuria VB, Tufenkji N (2019). Plastic teabags release billions of microparticles and nanoparticles into tea. Environmental Science & Technology (McGill).
- Keurig Dr Pepper, manufacturer pod material specifications (2024). Keurig brewer + pod product information.
- Nespresso, capsule material disclosure (2024). Nespresso capsule recycling information.
Scan your coffee setup before the next order
Use the MicroPlastics iOS app to check the pod box, the brewer, and the cup. 0–100 risk score, cited research, cleaner same-machine swap if there is one.
Download on the App StoreData compiled by the MicroPlastics Research Desk. Last reviewed: June 29, 2026. Submit a source dispute or correction via the contact page.