Dirty Dozen & Clean 15: The Foods With The Most & Least Pesticides In 2024

Every year, the Environmental Working Group (EWG) analyzes the most recent USDA data to compile its infamous Clean 15 and Dirty Dozen lists.

These list the types of fruits and vegetables that tend to be grown with the most and least pesticides, based on the latest available numbers.

Before we peel back the results of the 2024 list, a produce PSA: Don't take them as a sign that you should be avoiding any fruits or vegetables altogether—even the ones considered "dirty."

Given research like this study out of the Illinois Institute of Technology, Chicago, which found that after seeing pesticide messaging, low-income shoppers were less likely to purchase any fruits or vegetables, it's important to point out that eating a non-organic strawberry is still by and large a healthier choice than eating, say, a strawberry-flavored gummy bear. Filling your plate with a variety of fresh fruits and veggies will always be a cornerstone of good nutrition.

So, you can think of these lists more as resources to help guide your produce purchasing habits. If you only have a certain amount of money to spend at the grocery store, the Dirty Dozen and Clean 15 can steer you toward the produce you should prioritize buying organic from a health perspective (though there are environmental and worker's rights reasons to buy organic when you can too).

After washing, 75% of non-organic fresh produce sold in the U.S. contained residues of pesticides, the report found.

To rank each type of produce from "clean" to "dirty," the EWG assigns it a score based on the percent of samples tested with detectable pesticides; percent of samples with two or more detectable pesticides; average number of pesticides found on a single sample; average amount of pesticides found; maximum number of pesticides found on a single sample; and total number of pesticides found on the crop.

"All categories are weighted equally since they convey different but equally relevant information about pesticide levels on produce," the report's methodology section reads.

This means that the list indicates which crops tend to be treated with the highest volume and variety of pesticides but doesn't go so far as to say which ones are the riskiest from a human health perspective.