What tea is free of microplastics?

December 2, 2025 •

2 min read

In a 2019 study published in Environmental Science & Technology, researchers found that a single plastic-based tea bag can release billions of microplastic particles into a cup of hot water. This alarming discovery has many tea lovers asking: what tea is free of microplastics? Fortunately, there are many safe and sustainable options available for a worry-free cup.

Quick Summary

This guide provides a comprehensive overview of microplastic-free tea options, from brewing loose-leaf tea to selecting certified compostable tea bags. It lists brands committed to plastic-free products and offers practical tips for reducing microplastic exposure while enjoying your favorite brew.

Key Points

Loose-Leaf Tea is Safest: Brewing loose-leaf tea with a stainless steel infuser or a glass teapot is the most reliable way to ensure your tea is free of microplastics.
Not All Tea Bags Are Equal: Many conventional tea bags use plastic sealants that can release microplastics when steeped in hot water, so always check the materials.
Choose Certified Compostable Bags: Look for tea bags explicitly labeled as 'certified home-compostable' or 'plastic-free,' and verify the materials on the brand's website.
Key Brands Offer Plastic-Free Options: Brands like Pukka Herbs, Teapigs, and Numi Organic Tea are well-regarded for their commitment to plastic-free and sustainable packaging.
Check for Hidden Plastics: Some tea bags use bioplastics (PLA) which, while plant-based, may still require industrial composting and might be referred to confusingly.
Expand Your Sustainable Habits: Reducing microplastic exposure can extend beyond tea by using glass food storage, filtering tap water, and choosing fresh produce over plastic-packaged goods.

The Hidden Plastic in Your Teacup

Many conventional tea bags contain polypropylene, a type of plastic used to seal them, which can release billions of microplastic particles into hot water. While research on the health effects is ongoing, concerns have been raised about inflammation and hormonal disruption.

The Rise of Conscious Consumers

Consumers are increasingly seeking healthier, sustainable alternatives, and the tea industry is responding with plastic-free solutions.

Your Microplastic-Free Tea Options

The most reliable way to avoid microplastics is by choosing loose-leaf tea or certified compostable tea bags.

Embracing Loose-Leaf Tea

Loose-leaf tea, typically offering better quality and flavor, is inherently plastic-free. You can brew it using stainless steel infusers, ceramic or glass teapots, reusable cotton or hemp bags, or a French press.

Selecting Certified Compostable Tea Bags

When opting for tea bags, choose those explicitly labeled plastic-free and certified compostable. Some 'biodegradable' bags use bioplastics like PLA, which may require industrial composting. Look for brands using materials like abaca or cornstarch.

A Comparison of Tea Options


Feature	Loose-Leaf Tea	Certified Compostable Tea Bags	Conventional Tea Bags
Microplastic Risk	Virtually zero	Virtually zero (if certified)	High, due to plastic sealant
Environmental Impact	Very low, zero waste	Low, fully compostable	High, contributes to microplastic pollution
Flavor Quality	Often superior, richer taste	Good, but depends on the brand	Variable, can contain lower-quality fannings
Convenience	Requires a strainer or pot	Highly convenient, similar to conventional bags	Highly convenient
Cost	Can be more cost-effective per cup	Similar to or slightly higher than conventional	Generally lower cost per bag

How to Identify Plastic-Free Tea Bags

Identifying plastic-free tea bags can be tricky. Silky, mesh-like bags are often nylon (plastic). A simple tear test can help; paper-like texture suggests no plastic, while a shiny texture might indicate plastic. Always check the brand's packaging or website for confirmation.

Brands Offering Plastic-Free Solutions

Many brands are now committed to plastic-free packaging. Always verify the latest product information.

Pukka Herbs: Uses organic cotton stitching and abaca fibers.
Teapigs: Employs cornstarch for their 'tea temples'.
Clipper Teas: Uses plant-based PLA, industrially compostable.
Numi Organic Tea: Offers natural, compostable filter bags.
Harney & Sons: Provides loose-leaf and some compostable bag options.
Traditional Medicinals: Reports using plastic-free materials.
The Republic of Tea: Their round bags are made of unbleached paper.
Higher Living: Uses unbleached paper with organic cotton stitching.

Other Ways to Minimize Microplastic Intake

Reducing microplastic exposure involves more than just tea choices. Consider using glass or stainless steel food containers, filtering tap water, choosing unpackaged whole foods, and opting for safer cookware.

Conclusion: Making a Healthier, Greener Choice

Avoiding microplastics in tea is achievable by choosing loose-leaf or certified plastic-free tea bags. This benefits your health and supports sustainability. Stay informed about brands' practices and enjoy your tea ritual confidently. For more information on specific brands, consult their official websites, such as Clipper Teas for details on their packaging.

Frequently Asked Questions

Brands known for offering microplastic-free options include Pukka Herbs (using organic cotton), Teapigs (cornstarch-based 'temples'), Numi Organic Tea (natural filter bags), and Clipper Teas (plant-based PLA). Always check the most current packaging information from the manufacturer.

Yes, high-quality loose-leaf tea, when brewed with a non-plastic infuser like a stainless steel strainer or a glass pot, is the most reliable way to avoid microplastics. The potential for microplastic contamination in loose tea would primarily come from packaging, not the tea leaves themselves.

Look for explicit mentions of 'plastic-free,' 'certified compostable,' or 'plant-based materials.' Some brands specify the exact materials used, such as 'abaca fiber' or 'cornstarch.' If in doubt, visit the brand's website.

No, not all pyramid bags are made of plastic, but many traditional ones were made of nylon, which is a plastic. Many brands now use plant-based, compostable mesh made from cornstarch or other fibers. Always check the brand's materials.

You can perform a simple 'tear test.' A paper-based tea bag will feel and tear like regular paper. If the bag feels silky, shiny, or melts/hardens when exposed to a flame, it likely contains plastic fibers. However, the most definitive way is to check the manufacturer's website.

While PLA is plant-based, some studies suggest it can still break down into micro- and nano-sized particles, though its impact is a subject of ongoing research. Many brands now use PLA or similar materials for heat sealing, but truly plastic-free options that use stitching (like Pukka) are preferred by some consumers.

For plastic-free brewing, consider using a stainless steel tea infuser, a reusable cotton or hemp tea bag, a glass or ceramic teapot, or a French press. These methods are all excellent for brewing loose-leaf tea without releasing any plastic particles.