Back to the Cocoa Powder Guide
Cocoa powder can contain small amounts of heavy metals, mainly cadmium and lead. Cadmium is taken up from the soil by the cacao tree and ends up inside the bean, so its level depends largely on where the cacao grew. Lead mostly gets onto beans after harvest, for example from dust during drying and handling. Because cocoa powder is concentrated cocoa solids, it tends to test higher than milk chocolate.
There is no U.S. federal maximum for cadmium or lead in cocoa powder. The European Union caps cadmium in cocoa powder sold to consumers at 0.60 mg/kg, and California’s Proposition 65 sets daily reference amounts that consumer testers use.
Heavy metals in cocoa is the story that worries people, and it deserves a calm, factual look. Here is what the science says and what you can check yourself.
Key facts: the limits and numbers on this page
| What | Value | Unit | Source and date |
|---|---|---|---|
| EU maximum cadmium, cocoa powder sold to the final consumer | 0.60 | mg/kg | Commission Regulation (EU) 2023/915, April 25, 2023 |
| U.S. federal maximum for cadmium or lead in cocoa powder | none set | — | U.S. federal rules, checked September 15, 2026 |
| California Prop 65 maximum allowable dose level, cadmium | 4.1 | µg/day | OEHHA, checked September 15, 2026 |
| California Prop 65 maximum allowable dose level, lead | 0.5 | µg/day | OEHHA, checked September 15, 2026 |
| Biological half-life of cadmium in the body | 10–30 | years | EFSA opinion on cadmium in food, 2009 |
| Chocolate products with concerning lead, cadmium or both | 1 in 3 of 48 tested | products | Consumer Reports, December 2022 / October 2023 update |
| Cadmium in the cocoa Grevista distributes | not detected, below 0.015 (under 3% of the EU maximum) | mg/kg | VietLabs test report, October 23, 2026 |
| Arsenic, lead and mercury in the same report | not detected (below 0.03, 0.05 and 0.02) | mg/kg | VietLabs test report, October 23, 2026 |
| Cadmium in a 6 g serving of that cocoa | <0.09 (<3% of the 4.1 µg/day MADL) | µg | Grevista arithmetic from the October 2026 report |
How do cadmium and lead get into cocoa?
They arrive by two different routes, which is why the fixes are different.
| Cadmium (Cd) | Lead (Pb) | |
|---|---|---|
| How it gets in | Absorbed from soil by the tree; ends up inside the bean | Mostly settles on beans and pods after harvest, for example from dust during sun drying |
| What drives the level | Soil and growing region | Post-harvest handling |
| Can the supply chain reduce it? | Mainly by choice of origin (and, in research, soil management) | Largely, through cleaner drying and handling |
This is why levels vary between origins and brands, and why a named origin and a test report matter more than label adjectives.
What have recent tests of cocoa products found?
| Test | What was tested | Main finding |
|---|---|---|
| Consumer Reports, December 2022 | 28 dark chocolate bars | 23 had enough lead, cadmium or both that one ounce a day would exceed the California reference level for at least one metal |
| Consumer Reports, October 2023 | 48 products in 7 categories, including cocoa powder and hot chocolate mixes | 16 (one third) had concerning levels of lead, cadmium or both |
| Hands et al., Frontiers in Nutrition, July 2024 | 72 dark chocolate and cocoa products bought 2014–2022 | 43% exceeded the Prop 65 daily amount for lead and 35% for cadmium; none exceeded it for arsenic |
These are per-serving comparisons with a whole-day reference amount, so they flag products worth attention rather than declaring a single serving harmful.
What limits apply to cadmium and lead in cocoa powder?
| Reference | Value | What it applies to |
|---|---|---|
| European Union, Regulation (EU) 2023/915 | 0.60 mg/kg cadmium | Cocoa powder sold to the final consumer (0.80 mg/kg for chocolate with at least 50% cocoa solids) |
| California Proposition 65 (OEHHA), MADL | 4.1 µg/day cadmium; 0.5 µg/day lead | Daily exposure levels used for Prop 65 warnings; widely used by consumer testers |
| EFSA tolerable weekly intake | 2.5 µg cadmium per kg body weight per week | Whole diet, long-term average |
| United States (FDA) | No maximum level for cadmium or lead in cocoa powder | FDA treats lead and cadmium as contaminants to keep as low as possible; its Closer to Zero program focuses on foods for babies and young children, and its 0.1 ppm lead guidance covers candy likely to be eaten often by small children; its draft cadmium guidance (October 2026) covers processed foods for babies, not cocoa powder |
The EU number is the easiest to compare with a lab report, because both are expressed in milligrams per kilogram of powder.
Why do regulators care about such small amounts of cadmium?
Because cadmium builds up. The European Food Safety Authority’s 2009 opinion describes cadmium as retained mainly in the kidneys and liver, with a biological half-life of 10 to 30 years, and treats the kidney as the organ of concern. That is why limits are framed around long-term weekly or daily intake from the whole diet rather than any single cup. For a cocoa drinker, it means the level in a cocoa you use every day matters more than the level in one you use once a year. Serving sizes and daily habits are covered in how much cocoa powder per day.
How much cadmium is in two tablespoons of cocoa powder?
It is simple arithmetic once you have a lab number. USDA lists a tablespoon of unsweetened cocoa powder as 5.4 g, so two tablespoons weigh about 10.8 g.
| Cadmium in the powder | Cadmium in 2 tbsp (10.8 g) | Share of the 4.1 µg/day Prop 65 MADL |
|---|---|---|
| below 0.015 mg/kg (not detected; the October 2026 result for the cocoa Grevista distributes) | under 0.17 µg | under 5% |
| 0.30 mg/kg | about 3.2 µg | about 79% |
| 0.60 mg/kg (EU maximum) | about 6.5 µg | about 158% |
A cocoa at the EU maximum would exceed the California daily reference amount on its own at two tablespoons a day. That is why “how much cocoa is too much” cannot be answered without knowing which cocoa.
Can cocoa powder ever be completely free of heavy metals?
No. Cadmium and lead occur naturally in soil, so the realistic goal for cocoa is as low as possible, the same principle the FDA describes for foods in its Closer to Zero program. What “heavy metal free” can honestly mean on a label, and what near-zero looks like on a real lab report, is in is there a heavy metal free cocoa powder?
Why do cocoa powder and dark chocolate test higher than milk chocolate?
Cadmium and lead sit in the cocoa solids. Cocoa powder is almost entirely cocoa solids, and dark chocolate contains far more of them than milk chocolate, which dilutes the cocoa with sugar, milk powder and cocoa butter. Milk chocolate does not contain “cleaner” cocoa, just less of it per bite. See cocoa powder vs dark chocolate for the full comparison.
How do you read a heavy-metal lab report?
Look for a named, accredited lab, a reference number and date, the method with its detection limit, and a number with a unit rather than “passed”; how to read a cocoa powder lab report walks through each part. The same checks, plus label and taste checks, are in how to tell if cocoa powder is pure. For the steps a lab follows, see how cocoa powder is tested for heavy metals.
Frequently asked questions
Is there a U.S. limit for heavy metals in cocoa powder?
No federal maximum exists for cadmium or lead in cocoa powder. The most useful reference points are the EU maximum of 0.60 mg/kg cadmium for cocoa powder sold to consumers and California’s Prop 65 daily levels of 4.1 µg cadmium and 0.5 µg lead.
Does cocoa powder have lead?
It can. Lead usually gets onto cacao after harvest, so levels vary with drying and handling. A lab report for the specific product is the only way to know the number.
Why is cadmium in cocoa powder?
The cacao tree takes cadmium up from the soil, and it accumulates in the beans. Some growing regions have naturally higher soil cadmium than others.
Which cocoa powder has the lowest heavy metals?
Compare products by their published reports: cadmium in mg/kg, lead with its detection limit, the lab, the date and what sample was tested.
Is organic cocoa powder lower in heavy metals?
Not necessarily. Cadmium comes from the soil the cacao grows in, and lead mostly from dust that settles on beans after harvest, so the levels depend on where and how the beans are grown and dried, not on the organic label. A published, dated lab test is the only way to know. More on what the label does cover is in our organic cocoa powder guide.
Does roasting or processing remove heavy metals from cocoa?
No. Cadmium is taken up from the soil and stored inside the bean, so fermenting, roasting and milling do not remove it. That is why a test on the finished powder matters.
The other side of cocoa
Here is more to explore about cocoa, plus ways to put all this into practice when you shop:
- High-flavanol cocoa powder — what flavanols are and why processing matters.
- Cocoa powder nutrition facts — what one tablespoon contains.
- Five checks for cocoa quality — how to choose with confidence.
- Best cacao powder — four checks to use before you buy.
- Lab results — a real third-party report to read.
- Cocoa powder recipes — good ways to enjoy a clean cocoa.
Want a cocoa whose heavy-metal report is published in full, with numbers and detection limits? The Grevista 200 g (7 oz) unsweetened, non-alkalized cocoa powder.
Sources
- Consumer Reports. Lead and Cadmium Could Be in Your Dark Chocolate, December 2022, checked September 15, 2026.
- Food Safety Magazine. Consumer Reports Finds High Levels of Cadmium, Lead in One-Third of Chocolate Products (Consumer Reports testing published October 2023), checked September 15, 2026.
- Hands JM, Anderson ML, Cooperman T, Balsky JE, Frame LA. A multi-year heavy metal analysis of 72 dark chocolate and cocoa products in the USA. Front Nutr. July 31, 2024.
- European Commission. Commission Regulation (EU) 2023/915, April 25, 2023.
- California OEHHA. Proposition 65 No Significant Risk Levels and Maximum Allowable Dose Levels, checked September 15, 2026.
- EFSA Panel on Contaminants in the Food Chain. Cadmium in food. EFSA Journal. 2009;980; and Statement on tolerable weekly intake for cadmium. 2011;9(2):1975.
- U.S. Department of Agriculture. FoodData Central: Cocoa, dry powder, unsweetened (FDC ID 169593), checked September 15, 2026.
- VietLabs test report VLAB0-261015-070/1 (arsenic, cadmium, lead, mercury; ISO/IEC 17025), issued October 23, 2026. Published on our Lab Results & Awards page.
- U.S. Food and Drug Administration. Closer to Zero: Reducing Childhood Exposure to Heavy Metals from Foods (content current as of October 27, 2026), checked November 1, 2026.
Written by the Grevista Editorial Team. This article explains published research and regulations; it is not medical advice. Last updated November 1, 2026. How we check facts: Editorial Policy.