You may or may not have heard of something called “The Dirty Dozen”. (No, not that kind of dirty. Sorry.)
The dirty dozen is basically the 12 fruits and veggies that you should try to get organic because they tend to have the most pesticides on them. How do they get the most? Well, usually this occurs because the skin is thinner than the other fruits and veggies out there, so the chemicals can seep through easier.
Here is the list according to organic.org of the 12 most contaminated:
-Sweet Bell Peppers
They also included a list of the 12 least contaminated:
-Sweet corn (Frozen)
-Sweet peas (frozen)