15 organic fruits and vegetables that may not be worth your money

The same low percentage was true of avocadoes.

As a group, four of five samples "of pineapples, papayas, asparagus, onions and cabbage had no [detectable] pesticide residues," said EWG.

EWG said that only 5% of all vegetables in this list had two or more detectable pesticides.

Meanwhile, any fruit in the so-called "clean fifteen" had a maximum of three types of pesticide residues.

Even if a fruit or vegetable is not on EWG's "clean fifteen" list — or is on its "dirty dozen" list — that doesn't mean you should avoid it or buy organic.

Exposure to pesticides can be dramatically limited by properly washing and preparing produce.