Each year USDA releases their Pesticide Data Program report where they release findings of their sampling/testing program for pesticides in produce. The overwhelming majority of samples were within EPA tolerances. A very small percentage, 0.53%, had levels above that.
- In 2015, over 99 percent of the samples tested had residues well below the tolerances established by the EPA with 15 percent having no detectable pesticide residue.
- Residues exceeding the established tolerance were detected in 0.53 percent (54 samples) of the total samples tested (10,187 samples). Of these 54 samples, 18 were imported (33 percent) and 36 were domestic (67 percent).
- The samples containing pesticides that exceeded established tolerances included: 1 sample of fresh cherries, 4 samples of cucumbers, 3 grape samples, 3 samples of green beans, 1 peach sample, 1 pear sample, 8 samples of spinach, 25 samples of strawberries, 2 tomato samples, and 6 samples of watermelon. (Appendix I of the report has the levels).
USDA - Pesticide Data Program
Executive Summary