The findings are part of a list of the "Dirty Dozen" and "Clean Fifteen" in 2017, the list of foods most and least exposed to pesticides.
To get the rankings, EWG analysis tests conducted by the US Department of Agriculture to more than 36 thousand samples of 48 types of conventionally grown products.
"Even exposure to low levels of pesticides can be dangerous for toddlers, infants and young children. As much as possible, parents must take steps to reduce their exposure while still feeding children a healthy diet rich in vegetables and fruits," said Dr. Philip Landrigan of the Mount Sinai School of Medicine in a statement.
In two consecutive years, EWG found that strawberries including the most contaminated fruit. Last year the strawberries beat apple that bears the most contaminated for five years at the top.
Increased pesticide residues on strawberries because of the large demand for the fruit out of season. This year the most contaminated strawberries has traces of 20 different pesticides.
