Golden Illumination has a chart for toxic fruits and vegetables, toxic vegetables pesticide poisoning.

How would you like a dose of 67 pesticides with your celery? If you’re eating non-organic celery, that’s the number of pesticides you may very well be ingesting. According to the 2010 edition of Environmental Working Group’s Shopper’s Guide to Pesticides, the top 12 pesticide-contaminated fruits and vegetables contain 47 to 67 different pesticides per serving. This year celery is starring in the number 1 spot (up from number 4 last year), peaches moved down, and there are a few new contenders on the list.

Shoppers can use the list in two ways. If you are unable to buy organic produce, avoid the “Dirty Dozen” and instead opt for the “Clean 15.” If you can buy limited organic, purchase organically-grown items from the Dirty Dozen, and continue buying non-organic selections from the Clean 15. Of course, in a perfect world we wouldn’t be contending with pesticides at all–but in this imperfect world at least we have some tools to help navigate around the n-methyl carbamates and organophosphate pesticides. (Did you know that some of the most commonly used pesticides today were originally derived from nerve gasses developed during World War II? Fun fact. Sigh.)

Anyway, by avoiding the 12 most contaminated fruits and vegetables, you can lower your pesticide consumption by nearly 80 percent. So, at least there’s that. Here’s where to start, number 1 being the most contaminated:

The Dirty Dozen
Try to buy these 12 fruits and vegetables grown organically. But also know that many small farms can’t sustain the paperwork and fees to be certified Organic, even though they practice organic methods. If you shop at a farmer’s market and want to buy products not listed as organic, ask the vendor anyway, there’s a good chance many of the products were grown without the use of pesticides.

1. Celery
2. Peaches
3. Strawberries
4. Apples
5. Domestic blueberries
6. Nectarines
7. Sweet bell peppers
8. Spinach, kale and collard greens
9. Cherries
10. Potatoes
11. Imported grapes
12. Lettuce

The Clean 15
Produce with a strong outer layer seems to have defense against pesticide contamination. Although buying only organic is the first choice, if you are unable to do so, EWG recommends these non-organic fruits and vegetables which contain little to no pesticides, number 1 being the cleanest:

1. Onions
2. Avocados
3. Sweet corn
4. Pineapples
5. Mango
6. Sweet peas
7. Asparagus
8. Kiwi fruit
9. Cabbage
10. Eggplant
11. Cantaloupe
12. Watermelon
13. Grapefruit
14. Sweet potatoes
15. Sweet onions