Bottled water contains up to 100 times more microplastics

In a groundbreaking report published in the Proceedings of the National Academy of Sciences on Monday, scientists uncover alarming levels of microplastics in popular bottled water, challenging prior estimates and raising concerns about potential health implications.

The study, utilizing an innovative technique known as Stimulated Raman Scattering (SRS) microscopy, unveiled an average of 240,000 detectable plastic fragments per liter in leading brands, marking a significant increase of 10-100 times compared to earlier assessments.

The revelation sparks calls for further research into the potential health risks associated with nanoplastics exposure.

Beizhan Yan, an associate research professor of geochemistry at Columbia University and co-author of the paper, advised consumers, “If people are concerned about nanoplastics in bottled water, it’s reasonable to consider alternatives like tap water.”

However, he emphasized that the risk of dehydration should not be underestimated, cautioning against complete avoidance of bottled water when necessary.

Microplastics, measuring under 5 millimeters, have gained global attention in recent years as they infiltrate ecosystems, reaching remote locations like polar ice caps and mountain peaks.

Nanoplastics, particles below 1 micrometer, pose a more insidious threat, capable of traversing the digestive system and lungs, entering the bloodstream and potentially affecting organs, including the brain and heart.

The study also highlights their ability to cross the placenta, posing risks to unborn babies.

Limited research exists on the impact of nanoplastics on ecosystems and human health, but early lab studies have suggested links to toxic effects, such as reproductive abnormalities and gastric issues.

The research team opted not to name the tested brands, asserting that all bottled water likely contains nanoplastics, making it unfair to single out specific popular brands.

The study identified nylon as the most prevalent type of nanoplastics, possibly originating from plastic filters used in water purification.

Polyethylene terephthalate (PET), the material used to manufacture bottles, and other plastics, introduced during the opening and closing of bottle caps, were also detected.