Every year the Environmental Working Group (EWG) releases a list of the 12 fruits and vegetables which routinely contain the most pesticides. If possible, choose to get organic versions of these. Washing your fruits and vegetables won't remove all traces of pesticide and pesticides tend to remain within our bodies over long periods of time. These chemicals have been linked with many health problems such as asthma, autism and learning disabilities, birth defects and reproductive dysfunction, diabetes, Parkinson’s and Alzheimer’s diseases, and several types of cancer. The Pesticides Induced Diseases Databases at Beyond Pesticides will tell you more.
Here is the current list of fruits and vegetables to eat in organic form whenever possible:
Sweet bell peppers
EWG also lists a clean 15--fruits and vegeetables that aren't so bad to eat non-organic.