Does composting food containers put PFAS forever chemicals in your garden soil?

What's actually in it

Compostable food containers like molded fiber bowls, paper plates, and takeout boxes labeled "eco-friendly" often contain PFAS coatings to resist grease. These forever chemicals don't break down during composting. When you toss these containers into your compost bin, the PFAS stay intact and end up in the finished compost.

If you spread that compost on a vegetable garden, the PFAS can transfer into the soil and be absorbed by food plants.

What the research says

A 2026 study in Chemosphere tested both commercially available food-contact paper products and organic soil amendments made from composted food packaging. The researchers found measurable PFAS levels in both the containers and the resulting compost.

Paper plates and bowls marketed as compostable had some of the highest PFAS concentrations. When these products are composted at home or in municipal facilities, the PFAS persist through the entire process and concentrate in the finished product.

The compost samples tested positive for multiple PFAS compounds. Anyone using this compost to grow vegetables is adding forever chemicals directly to their food supply chain.

If you compost at home, avoid adding grease-resistant paper products. Stick to uncoated food scraps, yard waste, and plain paper. For takeout, ask restaurants if their containers are PFAS-free, or transfer food to your own plates immediately.