The Dirty Dozen and Clean Fifteen
Which fruits and vegetables carry the heaviest pesticide load, which ones you can safely buy conventional, and how to spend your grocery budget where it actually changes your exposure.
What these lists are
Each year the Environmental Working Group analyzes USDA and FDA pesticide residue testing on conventionally grown produce and ranks it. The twelve items with the highest residues become the Dirty Dozen. The fifteen with the lowest become the Clean Fifteen. Importantly, that testing happens after the produce has been washed and, where relevant, peeled, so what shows up is what a shopper would actually be exposed to. You can read the full methodology in EWG's Shopper's Guide to Pesticides in Produce.
The Dirty Dozen
- 01Spinach
- 02Strawberries
- 03Kale, collard, and mustard greens
- 04Grapes
- 05Peaches
- 06Cherries
- 07Nectarines
- 08Pears
- 09Apples
- 10Blackberries
- 11Blueberries
- 12Potatoes
The Clean Fifteen
- 01Pineapple
- 02Sweet corn
- 03Avocado
- 04Papaya
- 05Onion
- 06Sweet peas (frozen)
- 07Asparagus
- 08Cabbage
- 09Watermelon
- 10Cauliflower
- 11Bananas
- 12Mango
- 13Carrots
- 14Mushrooms
- 15Kiwi
How to shop this list without overspending
- · Buy organic for the Dirty Dozen items your family eats every week, not all twelve.
- · Buy conventional from the Clean Fifteen and put the savings toward quality protein and fats.
- · Frozen organic berries and greens are usually cheaper than fresh and just as good nutritionally.
- · Local farmers markets often sell low spray produce that is not certified organic and costs less.
- · Peeling helps with surface residue but not with systemic pesticides absorbed into the plant.
Why we care about this at the clinic
Pesticide residue is one input into your total toxic burden, and toxic burden is one of the things we assess when symptoms are not adding up. It shares detoxification pathways with everything else your body has to process, and it interacts with hormone regulation and inflammatory load. It is rarely the whole story, but it is one of the easiest inputs to reduce. When we need to know what your body is actually carrying, we test for it directly through heavy metal, mold, and toxin panels.
Common questions
What is the Dirty Dozen?
The Dirty Dozen is the Environmental Working Group's annual list of the twelve conventionally grown fruits and vegetables that carry the highest pesticide residues in USDA testing. It is published each year as part of EWG's Shopper's Guide to Pesticides in Produce.
What is the Clean Fifteen?
The Clean Fifteen is the companion list: the fifteen conventional fruits and vegetables with the lowest detected pesticide residues. These are the items where buying organic makes the least difference to your exposure, which helps you spend your grocery budget where it matters.
Does washing produce remove the pesticides?
Washing helps with surface residue, but many pesticides are systemic, meaning the plant absorbs them as it grows and they cannot be rinsed off. USDA residue testing is done after produce has been washed and, where applicable, peeled.
Do I have to buy everything organic?
No, and most families cannot. The practical approach is to prioritize organic for the Dirty Dozen items you eat most often, buy conventional from the Clean Fifteen, and use the savings on quality protein and fats. Eating conventional produce is still far better than eating no produce.
Why does pesticide exposure matter for my health?
Pesticide residues add to your total toxic burden, which is one of the inputs we assess in a functional wellness workup. Cumulative exposure is associated with hormone disruption and inflammatory load, and it competes for the same detoxification pathways your body uses for everything else. Reducing an avoidable source is a low cost, high leverage change.