The Environmental Working Group analyzed 10 years worth of data from the USDA & US Department of Agriculture to make up their 2012 Shopper’s Guide to Pesticides in Produce. The website even has AP’s for IPhones and Android Devices : http://www.ewg.org/foodnews/guide
Dirty Dozen Plus
Buy these organic. The lower the number the MORE pesticide was found!
+ May contain pesticide residues of special concern