Does Water Alone Remove Pesticides From Fruits and Vegetables? What the Research Says

Short answer: Plain tap water removes some pesticide residue from fruits and vegetables — a 2026 peer-reviewed review of 47 studies puts the median reduction at just over 30%. That's real, but it's roughly half of what a baking soda or vinegar soak achieves, and it depends heavily on the pesticide and how long you rinse. Here's what the research actually shows, and why it matters for how you wash produce.

What the research says

A 2026 peer-reviewed scoping review published by Environmental Working Group scientists analyzed data from 47 studies covering 23 produce items and 79 different pesticides. It found:

  • Water rinsing: median reduction of 30.2% (range: 0–94%)
  • Plain water soaking: median reduction of 33.7% (range: 0.6%–99%+)
  • Baking soda soaking: median reduction of 50.9% (range: 0.2%–99%+)
  • Vinegar (acetic acid) soaking: median reduction of 54.2% (range: 8.6%–99%+) — the most effective method the review covered

In plain terms: baking soda and vinegar outperformed plain water by more than 15 percentage points in median pesticide reduction. The review's authors note this is likely because many pesticides break down faster in alkaline (baking soda) or acidic (vinegar) environments than in neutral water — water can rinse away surface dirt and some residue, but it doesn't do much to actually break the pesticide down.

An earlier, widely cited study from the University of Massachusetts Amherst tested this directly on apples. Researchers soaked apples in a 1% baking soda solution and measured two common pesticides: after 12–15 minutes, the baking soda soak removed about 80% of thiabendazole and 96% of phosmet. Plain tap water and even an industry-standard bleach solution were, in the study's own words, "far less effective" over the same wash time.

The catch with DIY methods

Baking soda and vinegar work — the science is solid. But doing it yourself at home has real friction:

  • Measuring matters. The effective studies used specific concentrations (often around 1% baking soda). Eyeballing a spoonful into a sink of water isn't the same thing, and the EWG review itself notes that real-world effectiveness is likely lower than the lab results because most people use less than the tested concentration.
  • Soak time varies by pesticide. Thiabendazole took 12 minutes to break down; phosmet took 15. Different produce and different pesticide residues need different soak times, which most people have no way of knowing in the moment.
  • It's inconvenient enough that most people skip it. A quick rinse takes ten seconds. Measuring baking soda, waiting 12+ minutes, and rinsing again is a lot to ask before making a salad.

Worth noting: this particular review didn't test commercial produce washes at all, and it didn't evaluate peeling. So "which bottled produce wash works best" isn't a question the current research answers directly — what it does answer clearly is that plain water is the weakest of the methods actually tested.

Where this leaves you

If you want to reduce pesticide residue beyond what a water rinse does, the research points to two ingredients: an alkaline agent (baking soda) and an acid (like vinegar's acetic acid, or citric acid). That's the same underlying chemistry in Pur Bubbly's tablets — food-grade sodium bicarbonate and citric acid, pre-measured into a single tablet so you're not guessing at concentration or timing. Drop it in water, soak, rinse. No spoon, no math, no 15-minute countdown to remember.

We're not going to tell you a plain water rinse does nothing — it doesn't, and thirty percent is a real number. But if you're already going to the trouble of washing your produce, the evidence suggests water alone is leaving a meaningful amount behind.

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