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Washing Plastic Containers in a Dishwasher Increases Microplastic Pollution

Learn how dishwashers release microplastics and nanoplastics that pose environmental risks through polluted wastewater.

Jack Knudson
ByJack Knudson
Image Credit: Pawel Michalowski/Shutterstock

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It’s no secret that microplastics have already infiltrated our lives, and nowhere is this more present than in our own homes. Microplastics — and even tinier nanoplastics — stem from daily tasks like cooking and cleaning. Now, research is pointing to the previously unexplored impact of dishwashing on microplastic pollution.

A new study published in American Chemical Society ES&T Water has revealed that washing plastic containers and utensils in a dishwasher releases plastic particles, which proceed to enter wastewater. Although the study confirmed that the release of microplastics in dishwashers is relatively low compared to other sources of microplastic pollution, it could still impose cumulative consequences on the environment.

Emerging research on microplastics has demonstrated that they are essentially ubiquitous, existing in many of the products we use. Food preparation and packaging products are a particular area of concern. Studies have identified plastic cutting boards and disposable food-grade nylon bags, ...

  • Jack Knudson

    Jack Knudson

    Jack Knudson is an assistant editor for Discover Magazine who writes articles on space, ancient humans, animals, and sustainability, and manages the Planet Earth column of the print issue.

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