THE World Health Organisation (WHO) has announced a review into the potential risks of plastic in drinking water after a new analysis of some of the world’s most popular bottled water brands found that more than 90% contained tiny pieces of plastic. A previous study also found high levels of microplastics in tap water.
According to The Guardian In the new study, analysis of 259 bottles from 19 locations in nine countries across 11 different brands found an average of 325 plastic particles for every litre of water being sold. Of the 259 bottles tested, only 17 were free of plastics, according to the study.
Scientists based at the State University of New York in Fredonia were commissioned by journalism project Orb Media to analyse the bottled water. The scientists wrote they had “found roughly twice as many plastic particles within bottled water” compared with their previous study of tap water, .
According to the new study, the most common type of plastic fragment found was polypropylene. The bottles analysed were bought in the US, China, Brazil, India, Indonesia, Mexico, Lebanon, Kenya and Thailand.
Scientists used Nile red dye to fluoresce particles in the water – the dye tends to stick to the surface of plastics but not most natural materials.
The study has not been published in a journal and has not been through scientific peer review. Dr Andrew Mayes, a University of East Anglia scientist who developed the Nile red technique, told Orb Media he was “satisfied that it has been applied carefully and appropriately, in a way that I would have done it in my lab”.
A World Health Organisation said that although there was not yet any evidence on impacts on human health, it was aware it was an emerging area of concern. The spokesman said the WHO would “review the very scarce available evidence with the objective of identifying evidence gaps, and establishing a research agenda to inform a more thorough risk assessment.”
A second unrelated analysis, also just released, was commissioned by campaign group Story of Stuff and examined 19 consumer bottled water brands in the US. It also found plastic microfibres were widespread.
Abigail Barrows, who carried out the research for Story of Stuff in her laboratory in Maine, said there were several possible routes for the plastics to be entering the bottles.
“Plastic microfibres are easily airborne. Clearly that’s occurring not just outside but inside factories. It could come in from fans or the clothing being worn,” she said.