In its annual Shopper’s Guide to Pesticides in Produce the nonprofit, nonpartisan environmental organization found that strawberries top the list with the most pesticide … Strawberries Top the 'Dirty Dozen' List of Fruits and Vegetables With the Most Pesticides. Their research shows these foods contain the most pesticide and chemical contamination—even after washing and peeling. But pesticide residues can pose a health risk - so watch out when you consume the fruits and veggies on the Environmental Working Group's latest "Dirty Dozen" list of most contaminated produce. The Clean list includes foods such as avocadoes, sweet corn, pineapples, onions, frozen sweet peas, cabbages, papayas, asparagus, mangoes, eggplants, honeydews, kiwis, cauliflowers, broccoli and cantaloupes. More than 90 percent of samples of strawberries, apples, cherries, spinach, nectarines, and kale tested positive for residues of two or more pesticides. The 12 most highly contaminated foods according to the USDA and FDA. These are the top ranked foods with the highest levels of pesticides. Celery – 94% of celery tested contained dangerously high levels of pesticides. The pesticide that has been detected the most in all examined foods was Dacthal, or DCPA. And the levels of impurities were partial to certain fruits and vegetables over others. Despite testing foods for more than 500 pesticides, the USDA tests do not include glyphosate, the most widely used pesticide in the U.S. Research by EWG and other advocacy groups has highlighted the pervasive contamination of our food supply with glyphosate, a chemical associated with an elevated risk of cancer. The Environmental Protection Agency classified DPCA in 1995 as a possible human carcinogen . In the report, they analyze United States Department of Agriculture (USDA) test data to identify which fruits and vegetables are most contaminated with pesticide residues. The EWG, thus, also released a Clean list- a list of foods that are lowest in levels of pesticide residue and contamination. Apart from the EPA that regulates pesticide levels in foods, each state has departments that control such contamination parameters. huayang—Getty Images. However, all food and food products sold in US are bound by the same set of laws, rules, and safety standards. The Dirty Dozen list includes the top 12 fruits and veggies with the highest amount of pesticide residues. And since celery has no skin, these pesticides cannot be washed off. The Environmental Working Group tested 47 fruits and vegetables for chemicals used to kill bugs, weeds, and vermin. According to an analysis by the Environmental Working Group (EWG), nearly 70 percent of conventionally-grown produce showed pesticide contamination. Environmental Working group analyzed USDA pesticide residue data and found that almost 70 percent of non-organic produce sampled tested positive for pesticide contamination. The Environmental Working Group (EWG), a non-profit advocacy agency has released their list of the most contaminated fruits and vegetables - and apples have been ranked as the most contaminated - fifth year in a row.