Bottled water is one of the largest businesses in the world, sales surpassing even that of carbonated beverages. It is a common belief that bottled water is healthier than tap water but researchers at the State University of New York have found evidence to support the contrary. Upon testing several brands from around the world they found tiny particles called microplastics in nearly all of them. On average, over 300 pieces of microplastics were found within each liter of water. Dasani and Aquafina at at the lower end of the spectrum, whereas some bottles of Nestle’s Pure Life reached over 10,000 particles of microplastics. Scientists are researching whether or not consuming microplastics is detrimental to health but right now it is believed that it causes no harm.

Read more: Your bottled water is probably contaminated with tiny plastic particles, researchers find