PFAS in Cardboard Takeout Cups: Safe Drinking Options

That cardboard coffee cup from your morning drive-through probably has a thin plastic or chemical coating on the inside to keep it from getting soggy. In many cases, that coating contains PFAS, the “forever chemicals” that don’t break down in your body or in the environment. A 2021 study tested takeout food packaging from major restaurant chains and found PFAS in a significant percentage of cups and containers. Here’s what you can do about it.

For more on PFAS-free living, see our guide to PFAS free raincoats and PFAS free pillows.

Why PFAS in Cardboard Takeout Cups Is a Health Concern

PFAS have been linked to hormone disruption, elevated cholesterol, weakened immune response, and increased cancer risk. A study published in the International Journal of Molecular Sciences found detectable PFAS in the blood of people with typical household exposures. Hot liquids make the problem worse: heat causes PFAS to leach from cup coatings faster. If you’re drinking hot coffee from a coated cardboard cup every morning, that’s a daily dose you can cut out pretty easily.

How to Identify PFAS-Free Cardboard Takeout Cups

There’s no label that says “contains PFAS.” Manufacturers aren’t required to disclose it in most states. A few things that help: look for cups with OEKO-TEX Standard 100, bluesign, or GOTS certification, all of which prohibit PFAS. If packaging says “grease-proof” or “water-resistant” without explaining how, that’s usually a fluorinated coating. You can also ask the brand directly whether they use fluorinated treatments. The PFAS Free Life Database tracks verified PFAS-free products if you want to check before you buy.

Safe Cardboard Takeout Cup Alternatives

The easiest fix is bringing your own mug. Stainless steel and glass travel mugs are PFAS-free by nature, and most coffee shops will fill them for you. If you’re stuck with disposable cups, some brands now sell compostable cups without fluorinated coatings, though they’re harder to find at chain restaurants.

The KETIEE Travel Coffee Mug is a solid option: 12oz insulated stainless steel, spill-proof lid, fits in your car cup holder, and runs about $10. Over 10,000 reviews and an Amazon’s Choice pick.

Additional Tips to Reduce Your PFAS Exposure from Takeout Cups

A few other things that help: if you do use a takeout cup, let your drink cool for a minute before sipping. Heat speeds up PFAS leaching from the coating. Use glass or stainless steel for anything that touches food or drinks at home. And filter your tap water, since PFAS in drinking water is a bigger exposure source than cups for most people. A reverse osmosis system is the most effective option for removing PFAS.

For more on water filtration, see our guide to PFAS free water filters. The PFAS Free Life Database can help you find verified products across other categories too.

Frequently Asked Questions

Are PFAS-free takeout cups effective?

Yes. Stainless steel and glass mugs work perfectly, and PFAS-free paper cups with plant-based coatings hold up fine for normal use. They may not last quite as long with very hot liquids, but for a typical coffee or cold drink they do the job.

How do I know if my takeout cup has PFAS?

You can’t tell by looking at it. The coating is invisible. Watch for terms like “grease-resistant” or “water-repellent” on packaging, which often signal fluorinated treatments. Certifications like OEKO-TEX Standard 100 or bluesign prohibit PFAS. You can also check the PFAS Free Life Database at database.pfasfreelife.com for verified products.

What health risks are linked to PFAS in cardboard cups?

PFAS exposure has been tied to elevated cholesterol, immune problems, hormone disruption, and increased cancer risk. Children and pregnant women face higher risk from the same exposure levels. When you reduce your exposure, PFAS levels in your body do gradually drop over time.