The IAA One Minute Blog

The average liter of bottled water has nearly a quarter million invisible pieces of tiny nanoplastics, detected and categorized for the first time by a microscope using dual lasers.

Bottled Water Study

Looking at five samples each of three common bottled water brands, researchers found particle levels ranged from 110,000 to 400,000 per liter, averaging at around 240,000, according to the study. These are particles that are less than a micron in size.

The researchers looked for seven common types of plastics. These seven types of plastics accounted for only 10 percent of the nanoparticles detected in bottled water, and researchers have not determined what the other 90 percent are made of.

Much of the plastic seems to be coming from the bottle itself and the reverse osmosis membrane filter used to keep out other contaminants.

The new laser-based technique to detect microplastic and nanoplastic particles was used to analyze the popular United States water brands.

The study was published in the “Proceedings of the National Academy of Sciences.”

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