The Environmental Working Group has published this year's "Dirty Dozen" -- a list of the produce that contains the most pesticides.
EWG reviewed data from the U.S. Department of Agriculture and Food and Drug Administration.
The produce topping the list: strawberries.
EWG notes 98 percent of strawberry samples tested by federal officials had pesticide residue.
"It is startling to see how heavily strawberries are contaminated with residues of hazardous pesticides, but even more shocking is that these residues don't violate the weak U.S. laws and regulations on pesticides in food," said Sonya Lunder, EWG Senior Analyst, in a statement. "The EPA's levels of residues allowed on produce are too lax to protect Americans' health. They should be updated to reflect new research that shows even very small doses of toxic chemicals can be harmful, particularly for young children."