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Dirty Dozen & Clean Fifteen 2026: What Do Pesticide Residues Really Mean?
Some fruits and vegetables are more likely than others to have detectable pesticide residues. But “dirty” does not mean unsafe — and “clean” does not mean pesticide-free. Here’s what you should know before your next grocery run.
Fruits and vegetables are an important part of our everyday diet. But before produce reaches our kitchens, pesticides may be used during farming to protect crops from insects, weeds, fungi and other threats.
Small amounts of these pesticides may sometimes remain on or in produce after harvesting. These are known as pesticide residues.
So which fruits and vegetables tend to have more detectable residues?
One widely referenced guide is the Environmental Working Group’s annual Dirty Dozen™ and Clean Fifteen™.
What Are the Dirty Dozen and Clean Fifteen?
Every year, the Environmental Working Group (EWG) analyses pesticide-residue testing data collected by the U.S. Department of Agriculture and U.S. Food and Drug Administration.
From the produce it evaluates, EWG identifies:
The Dirty Dozen™
The 12 conventionally grown fruits and vegetables that rank highest in its pesticide-residue analysis.
The Clean Fifteen™
The 15 conventionally grown fruits and vegetables that rank lowest in its analysis.
Importantly, these names describe relative pesticide-residue rankings. They should not be interpreted as meaning one group is “unsafe” and the other is completely “clean.”
The 2026 Dirty Dozen™
According to EWG’s 2026 Shopper’s Guide, these were the 12 highest-ranking produce categories in its pesticide-residue analysis:
1. Spinach
2. Kale, collard & mustard greens
3. Strawberries
4. Grapes
5. Nectarines
6. Peaches
7. Cherries
8. Apples
9. Blackberries
10. Pears
11. Potatoes
12. Blueberries

EWG’s rankings consider factors such as the number and amounts of pesticide residues detected in testing.
This doesn’t mean you should stop eating these foods.
It simply means that, within the produce examined by EWG, these ranked relatively higher for pesticide residues.
The 2026 Clean Fifteen™
At the other end of EWG’s analysis are the Clean Fifteen — produce with comparatively lower amounts of detected pesticide residues:
1. Pineapples
2. Sweet corn — fresh or frozen
3. Avocados
4. Papayas
5. Onions
6. Frozen sweet peas
7. Asparagus
8. Cabbage
9. Cauliflower
10. Watermelon
11. Mangoes
12. Bananas
13. Carrots
14. Mushrooms
15. Kiwi

EWG reports that almost 60% of samples from the Clean Fifteen had no detectable pesticide residues.
But again, “Clean Fifteen” does not mean pesticide-free. It means these foods ranked comparatively lower based on the testing data analysed.
But What Does This Mean for Us in Singapore?
This is an important distinction.
The EWG Shopper’s Guide is based primarily on produce tested in the United States. Singapore imports fruits and vegetables from many different countries, with different farms, suppliers, growing practices and pesticide regulations.
Therefore, the Dirty Dozen should not be treated as a definitive ranking of produce sold in Singapore.
Instead, it can be viewed as a useful educational reference showing a broader point:
Pesticide residues can vary considerably between different types of produce.
In Singapore, the Singapore Food Agency (SFA) regulates the amount of pesticide residues permitted in food. Food businesses must ensure pesticide residues remain within Singapore’s regulatory limits, or applicable Codex maximum residue limits where relevant.
So finding a detectable pesticide residue does not automatically mean a food is unsafe.
The amount of residue matters, and regulatory limits are established to control food-safety risks.
Can You See Pesticide Residues? Usually, no.
A strawberry, apple or bunch of spinach may look perfectly fresh and clean while still having microscopic residues on or within it.
That is why appearance alone cannot tell us everything about what is present on produce.
At the same time, pesticide residue should not be confused with visible dirt, soil or microorganisms. They are different issues and may require different controls throughout farming, food handling and preparation.
Does Washing Fruits and Vegetables Help?
Yes — washing is an important part of food preparation.
Singapore Food Agency recommends washing vegetables before cooking or eating them to remove soil and other residues. Its household guidance includes washing away visible soil, soaking vegetables in fresh tap water, gently scrubbing harder produce such as potatoes and rinsing again before cooking.
SFA also states that washing, peeling and cooking can significantly reduce pesticide levels in vegetables.
However, washing should not be presented as a guarantee that every pesticide residue will be completely removed. Different pesticides behave differently. Some remain mainly on the surface, while others may penetrate plant tissue.
That is why food safety begins much earlier than washing alone — with responsible agricultural use, regulatory limits, testing and monitoring.
Dirty Doesn’t Mean Dangerous. Clean Doesn’t Mean Zero.
Perhaps the most important takeaway from the Dirty Dozen and Clean Fifteen is this:
Don’t be afraid of fruits and vegetables. Be informed about them.
A fruit appearing on the Dirty Dozen list doesn’t mean you should stop eating it.
And something appearing on the Clean Fifteen doesn’t mean there is no reason to wash it.
Fruits and vegetables can also carry soil, dust, microorganisms and residues from handling during the journey from farm to kitchen.
Whatever produce you choose, proper handling and washing remain sensible everyday habits.
- A Simple Food-Care Habit
- At ORCACLEAN, we believe food care shouldn’t come from fear.
- It should come from awareness.
- We cannot control every farm, journey, warehouse or pair of hands our food passes through before reaching us.
- But we can control the final few minutes before it reaches our plate.
- Drop. Soak. Rinse.
- A simple routine before cooking and eating your fruits and vegetables.
- Because food care doesn’t start when the pan gets hot.
- Before Cooking Starts Here.
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References
Environmental Working Group (EWG) — 2026 Shopper’s Guide to Pesticides in Produce™
The Dirty Dozen™ and Clean Fifteen™ rankings discussed above are based on EWG’s analysis of recent pesticide-residue testing data from the U.S. Department of Agriculture and U.S. Food and Drug Administration.
Singapore Food Agency (SFA) — Regulatory Limits for Contaminants in Food
Singapore maintains regulatory limits for pesticide residues in food. Where Singapore-specific limits are not prescribed, applicable Codex maximum residue limits may be used.
Singapore Food Agency (SFA) — Food Safety Tips
SFA recommends washing and soaking vegetables to remove soil and other residues, gently scrubbing harder produce such as potatoes and rinsing produce again before cooking.
Singapore Food Agency (SFA) — Salad Safety
SFA states that pesticide use during crop production may leave residues on vegetables and that washing, peeling and cooking can significantly reduce pesticide levels.
Disclaimer: The EWG Dirty Dozen™ and Clean Fifteen™ are based on U.S. testing data and are included here for general educational purposes. They should not be interpreted as Singapore-specific pesticide rankings or as indicating that particular foods are safe or unsafe. ORCACLEAN is not affiliated with or endorsed by EWG.
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