Spinach – Spinach, in the second spot this year, had relatively high concentrations of a neurotoxic or brain-damaging insecticide.
Overall, 97% of spinach samples contained pesticide residues.
Nectarines – Nearly 94% of tested nectarines, third on the list, contained two or more pesticides, while a single sample showed residue from 15 separate pesticides.
Apples – Nine out of every 10 apples showed pesticide residue, while eight out of every 10 samples contained a pesticide banned in Europe due to the belief that it causes cancer. Apples rank fourth among the dirty dozen.
Grapes – On average, grape samples contained five pesticide residues in 2018. With more than 96% of grape samples testing positive for pesticides, the Environmental Working Group placed this popular fruit in position five on its annual list of dirty produce.
Peaches – Close to every peach sample tested -- 99% -- showed detectable pesticide residue. Ranking sixth out of 12, peaches showed, on average, four pesticides per sample.
Cherries – On average, samples of cherries contained five pesticides, while nearly a third contained a pesticide that European health authorities believe causes cancer. The group placed cherries in the seventh position among the dirty dozen.
Pears – Several pesticides in high concentrations, including insecticides and fungicides, were found on this eighth-ranking stone fruit. More than half of all pears had residues of five or more pesticides, the group found.
Tomatoes – Tomatoes, ninth among the dirty dozen, showed four pesticides on average, while a single sampled showed a variety of pesticides.