The Dirtist and Cleanest Produce on the Super Market

The most toxic produce - apple. 99 percent of apples that were checked had some sort of pesticide residue on them.

Other fruits and vegetables on the Dirty Dozen are strawberries, grapes, celery, peaches, spinach, sweet bell peppers, imported nectarines, cucumbers, cherry tomatoes, potatoes and imported snap peas. Leafy greens – kale and collard greens – and hot peppers were frequently contaminated with insecticides that are particularly toxic to human health. EWG details this problem in a section called Dirty Dozen-Plus.

EWG's Clean Fifteen consists of conventional produce with the least amount of pesticide residues. Avocados were the cleanest, with only 1 percent of samples showing any detectable pesticides. Other items on the list include corn, pineapples, cabbage, frozen sweet peas, onions, asparagus, mangoes, papayas, kiwi, eggplant, grapefruit, cantaloupe, cauliflower and sweet potatoes.

Make sure you wash thoroughly (three times) and try to use organic produce whenever possible.