For the 2018 Dirty Dozen list, EWG singled out produce with the highest loads of pesticide residues. This year the list includes, in descending order, strawberries, spinach, nectarines, apples, grapes, peaches, cherries, pears, tomatoes, celery, potatoes and sweet bell peppers.
Each of these foods tested positive for a number of different pesticide residues and contained higher concentrations of pesticides than other produce.
- More than 98 percent of samples of strawberries, spinach, peaches, nectarines, cherries and apples tested positive for residue of at least one pesticide.
- A single sample of strawberries showed 20 different pesticides.
- Spinach samples had, on average, 1.8 times as much pesticide residue by weight than any other crop.
THE CLEAN FIFTEEN™
EWG’s Clean Fifteen list of produce least likely to contain pesticide residues included avocados, sweet corn, pineapples, cabbages, onions, frozen sweet peas, papayas, asparagus, mangoes, eggplants, honeydews, kiwis, cantaloupes, cauliflower and broccoli. Relatively few pesticides were detected on these foods, and tests found low total concentrations of pesticide residues.
- Avocados and sweet corn were the cleanest. Less than 1 percent of samples showed any detectable pesticides.
- More than 80 percent of pineapples, papayas, asparagus, onions and cabbages had no pesticide residues.
- No single fruit sample from the Clean Fifteen tested positive for more than four pesticides.
- Multiple pesticide residues are extremely rare on Clean Fifteen vegetables. Only 5 percent of Clean Fifteen vegetable samples had two or more pesticides.