The Environmental Working Group updated its 2016 shoppers' guide and listed the following as the fruit/vegetables that contain highest levels of pesticides.

1

EWG's Dirty Dozen Plus and Clean Fifteen Lists

Strawberries

2

EWG's Dirty Dozen Plus and Clean Fifteen Lists

Apples

3

EWG's Dirty Dozen Plus and Clean Fifteen Lists

Nectarines

4

EWG's Dirty Dozen Plus and Clean Fifteen Lists

Peaches

5

EWG's Dirty Dozen Plus and Clean Fifteen Lists

Celery

6

EWG's Dirty Dozen Plus and Clean Fifteen Lists

Grapes

7

EWG's Dirty Dozen Plus and Clean Fifteen Lists

Cherries

8

EWG's Dirty Dozen Plus and Clean Fifteen Lists

Spinach

9

EWG's Dirty Dozen Plus and Clean Fifteen Lists

Tomatoes

10

EWG's Dirty Dozen Plus and Clean Fifteen Lists

Sweet bell peppers

11

EWG's Dirty Dozen Plus and Clean Fifteen Lists

Cherry tomatoes

12

EWG's Dirty Dozen Plus and Clean Fifteen Lists

Cucumbers

The full list of vegetables/fruits and their pesticide rankings can be viewed here.