Can PFAS in compostable food packaging affect garden soil?
Use caution before composting coated food packaging at home. A 2026 Science of the Total Environment study found PFAS in food-contact paper products, composts, soil amendments, and biosolid-based fertilizers.
What is actually in it
Compostable food packaging can include molded fiber bowls, paper takeout boxes, wrappers, plates, and grease-resistant liners. Some food-contact paper has used PFAS to resist oil and water.
Compostable describes the base material. It does not promise that every coating belongs in garden soil. This matters most when compost is used around vegetables, herbs, or kids play areas.
What the research says
A 2026 Science of the Total Environment study measured 13 PFAS compounds in commercial composts, soil amendments, biosolid-derived fertilizers, and five food-contact paper products. The study found PFAS across product categories. Food service paper products had notable PFHxA, PFBA, and PFHxS.
This supports caution with coated packaging in home compost. It does not mean every compostable container contains PFAS.
What to do at home
Do not compost greasy takeout bowls, coated wrappers, or fiber containers unless the product is clearly PFAS-free and your local compost program accepts it.
For home compost, stick with food scraps, yard waste, and plain uncoated paper. Store leftovers in glass, ceramic, or stainless steel instead of relying on disposable food packaging.
The research at a glance
| Study | Journal | Year |
|---|---|---|
| PFAS in commercially available organic amendments and food-contact paper products. | Sci Total Environ | 2026 |