Does Matcha Contain Heavy Metals? Here's What You Need to Know
There's been a lot of talk lately about matcha and heavy metals. On social media, in health blogs, in forums — the question "is my matcha actually safe?" keeps coming up. And honestly, it deserves an honest answer.
How do heavy metals end up in matcha?
Tea plants — like almost all plants — absorb substances from the soil through their roots. That's just how they grow. Alongside nutrients, they can also take up small amounts of heavy metals, such as lead, cadmium, arsenic, and mercury. This isn't something manufacturers "do" — it's simply how nature works.
With matcha, there's an extra layer to consider: you're not just drinking an infusion made from tea leaves (as with regular green tea) — you're consuming the ground leaf itself. That means you also ingest the substances the plant has absorbed.
The amount depends strongly on two things: the quality of the soil in which the tea grows, and how the tea is cultivated.
Doesn't organic automatically mean safe?
This is a common misconception — and an understandable one.
Organic cultivation means no synthetic pesticides or artificial fertilisers were used. That's a good thing, and it's an important choice. But it says nothing about soil quality or the absence of heavy metals.
An organically certified tea can still contain elevated levels of heavy metals if the soil it's grown in is prone to contamination. Conversely, a carefully sourced organic matcha from a clean growing region can sit well within all safety standards.
The organic label is a good start — but it's not the whole story.
What are the actual standards?
The European Union has established official maximum levels for heavy metals in food, set out in EU Regulation 2023/915. These are legally binding limits that products sold in Europe must comply with.
These standards exist for good reason: at low, normal consumption levels of foods that fall within these limits, there is no cause for concern for healthy adults.
How do you actually know if your matcha is safe?
Simply put: by testing. And by showing those results.
We have every batch of our matcha tested by Eurofins, one of the most recognised accredited food safety laboratories in Europe. Eurofins tests for lead (Pb), cadmium (Cd), arsenic (As), and mercury (Hg) — the four heavy metals most relevant for tea and food products.
The results of our batches fall well within European maximum standards.
What makes our matcha different?
- Origin: Our matcha comes from Japan, one of the most strictly regulated tea-growing regions in the world. We know the farmers and their process.
- Certified organic: No pesticides, no artificial fertilisers.
- Tested per batch by Eurofins: Not just once, but with every new batch.
- Transparent: We show you the test results — no vague claims.
What about other things you eat every day?
For context: heavy metals aren't found only in tea. Dark chocolate, rice, spinach, carrots — they all naturally contain trace amounts of heavy metals. It's always about the quantity and frequency of exposure. With matcha from a quality origin and proven low values, that's — at normal consumption — no reason for concern.
In short
Matcha is not inherently dangerous. But it is a product where origin, cultivation, and independent testing truly make the difference. With us, you don't have to take our word for it — we show you.
Questions? We're happy to answer them at drink@asa-matcha.com
