In 2022, global plastic production reached 400 million tonnes, but less than 10% of that was produced as recycled material through mechanical recycling. As governments push to raise recycling rates and cut plastic waste, more recycled plastic is being directed toward food packaging, which is where most plastic is used in the first place. That shift raises a direct question for anyone in the food chain: can recycled plastic be as safe for food contact as new, virgin plastic?
The short answer is that it can be, but only under controlled processes that have been tested and approved for the purpose. Recycled plastic carries chemical risks that virgin plastic does not, and the safety of the final material depends entirely on how well the waste stream is sorted, cleaned, and verified. This article explains where those risks come from, how recycling processes deal with them, and what the main regulatory systems require.
Why recycled plastic raise different safety questions
Plastic is never chemically simple. More than 16,000 chemicals have been identified as either intentionally used in plastic production or unintentionally present in plastics, and of these, over 4,200 have been flagged as hazardous in some way, being persistent, bioaccumulative, mobile, or toxic. These divide into two groups that matter for recycling. Intentionally added substances (IAS) are the additives, stabilisers, and monomers built into the plastic on purpose. Non-intentionally added substances (NIAS) are impurities, breakdown products, and contaminants that were never meant to be there.
Recycling concentrates the NIAS problem. When plastic waste streams are poorly controlled, non-food plastics can get mixed in with food-grade plastics, and containers that consumers misused can enter the stream. Studies comparing recycled plastics with virgin plastics have found the recycled material carrying higher concentrations of organic and inorganic chemicals, including metals, PFAS, and polycyclic aromatic hydrocarbons. Recycled PET and other plastics have been shown to contain both chemicals from the original material and additional contaminants picked up during use, handling, processing, or recycling itself.
Consumer misuse is a specific and well-documented concern. Refillable PET bottles that were previously used to store substances such as alcohol, cleaning products, or fuels have been identified as a source of off-odours in mineral water and soft drinks. If containers like these are not removed from the stream or fully decontaminated, their residues can carry through into new packaging.
How recycling processes are supposed to manage the risk
There are three broad recycling routes for food-contact plastic. Primary recycling reuses clean production scraps within a closed loop. Secondary, or mechanical, recycling grinds, melts, and reprocesses post-consumer waste while keeping the polymer structure unchanged. Tertiary, or chemical, recycling breaks the plastic back down into its original monomers, then purifies and repolymerises them into new pellets. Mechanical recycling is cheaper and less energy-intensive but tends to yield lower-quality polymer; chemical recycling separates mixed waste more effectively and can produce material comparable to virgin plastic.
The safety of either route rests on a few controls used in combination. Sorting separates food-use plastics from non-food plastics, and then separates containers with confirmed absence of consumer misuse from those that may have been misused. Cleaning, which can involve several steps depending on the input quality, removes residual contaminants. A challenge test then validates the process: known surrogate contaminants spanning a wide range of physical and chemical properties are deliberately added to a test feedstock, which is run through the cleaning process and tested against food simulants to confirm that the contaminants are removed to acceptable levels. This test is used by regulators including the US FDA, EFSA, Health Canada, and Brazil's national health agency.
A further option is a functional barrier design, where the recycled plastic is covered on the food-contact side with a layer of virgin polymer to limit or prevent any migration into the food.
For the contaminants that cleaning cannot fully characterise, regulators rely on the threshold of toxicological concern (TTC). This is a method for setting an exposure level below which a substance is considered unlikely to pose a meaningful health risk, even when full toxicity data are missing. It is particularly useful for recycled plastics, where the identity of every possible contaminant is often unknown and screening for all of them is impractical.
What the main regulatory systems require
The systems differ by region, but they share the principle that recycled food-contact plastic must meet the same safety standard as virgin material.
In the European Union, Commission Regulation (EU) 2022/1616 sets the rules and requires that recycled materials meet the same safety and quality standards as virgin plastic, with EFSA responsible for verifying that a recycling process effectively reduces contamination. Only authorized processes, such as post-consumer mechanical PET recycling, are permitted. A 2025 amendment, Commission Regulation (EU) 2025/351, set a migration threshold of 0.15 ng/g below which no risk assessment is required; between 0.15 and 50 ng/g the assessment is limited to excluding genotoxicity, and above 50 ng/g a full risk assessment is needed.
In the United States, the FDA has not issued binding regulations specifically for recycled food-contact plastic, but it publishes guidance describing how to demonstrate that recycled material is pure enough for its intended use, and since 1990 it has issued opinions on at least 423 manufacturer applications for recycling processes. The responsibility sits with the manufacturer to keep contaminants below a dietary concentration threshold of 0.5 ng/g, equivalent to 1.5 µg per person per day.
Brazil and Canada use comparable challenge-test approaches. Brazil sets a surrogate limit of 220 ng/g for food-grade post-consumer recycled PET, while Canada assesses any potential exposure against a threshold of concern of 25 ng/kg of body weight per day.
One gap is worth noting. There is no globally harmonised standard for recycled food-contact plastic. The Codex Alimentarius Commission has recognised this and agreed to prepare a discussion paper on food safety guidance for recycled materials in food packaging, for consideration in 2026. Greater harmonisation would help countries that lack their own detailed frameworks and would support international trade in recycled materials.
What this means in practice
Recycled plastic that has gone through an approved, validated process and meets the regional migration limits is considered safe for food use, on the same basis as virgin plastic. The risk does not come from recycling as a concept; it comes from uncontrolled waste streams, inadequate sorting, and containers that were misused before collection.
For food businesses sourcing recycled packaging, the practical checks are whether the supplier uses a recycling process authorised in the relevant market, whether challenge-test data exist for that process, and whether the material meets the applicable migration thresholds. Where those conditions are not met, the safer assumption is that the material has not been demonstrated fit for food contact.
Frequently asked questions
Is recycled plastic as safe as new plastic for food?
It can be, if it has been processed through an authorised, validated recycling process and meets the migration limits set by the relevant regulator. The standard required is the same as for virgin plastic.
What is the main risk with recycled food plastic?
Chemical contamination, especially non-intentionally added substances introduced through mixed waste streams or consumer misuse of containers, such as storing fuels or cleaning products in bottles that are later recycled.
Which recycled plastic is most commonly approved for food contact?
Post-consumer mechanically recycled PET is the most widely authorised, including in the EU under Regulation 2022/1616.
Is there a single global standard?
Not yet. Regulations differ by region, and the Codex Alimentarius Commission is working on guidance, with a discussion paper due for consideration in 2026.
References
- Houssini, K., Li, J. & Tan, Q. (2025). Complexities of the global plastics supply chain revealed in a trade-linked material flow analysis. Communications Earth & Environment, 6(1).
- Monclús, L. et al. (2025). Mapping the chemical complexity of plastics. Nature, 643(8071).
- Wagner, M. et al. (2024). State of the Science on Plastic Chemicals. Norwegian University of Science and Technology, Trondheim.
- Daggubati, L. et al. (2025). Fingerprinting risk from recycled plastic products using physical and chemical properties. Journal of Hazardous Materials, 488.
- Geueke, B. et al. (2023). Hazardous chemicals in recycled and reusable plastic food packaging. Cambridge Prisms: Plastics, 1.
- Widén, H., Leufvén, A. & Nielsen, T. (2005). Identification of chemicals, possibly originating from misuse of refillable PET bottles, responsible for consumer complaints about off-odours in water and soft drinks. Food Additives & Contaminants, 22.
- Tumu, K., Vorst, K. & Curtzwiler, G. (2024). Understanding intentionally and non-intentionally added substances and associated threshold of toxicological concern in post-consumer polyolefin for use as food packaging materials. Heliyon, 10(1).
- FAO & WHO (2025). Joint FAO/WHO Food Standards Programme, Codex Alimentarius Commission Forty-eighth Session: Report of the 18th Session of the Codex Committee on Contaminants in Foods. REP25/CF18.
- Feeley, M., Niegowska Conforti, M., Fattori, V. & Lipp, M. (2026). Food safety implications of recycled plastics and alternative food contact materials. FAO, Food Safety and Quality Series No. 35.
