The study revealed that PFAS, or ‘Forever Chemicals,’ were present in drinking water samples from various countries around the world. The researchers found 10 target PFAS in tap and bottled water samples from major cities in the UK and China. Perfluorooctanoic acid (PFOA) and perfluorooctane sulfonate (PFOS) were detected in over 99% of bottled water samples sourced from 15 countries. PFAS concentrations were found to be higher in tap water in Shenzhen, China compared to Birmingham, UK. The researchers also found that boiling water or using activated carbon filtration methods could reduce PFAS concentrations in drinking water by 50% to 90%.
The study, published in ACS ES&T Water, highlighted the widespread presence of PFAS in drinking water and the effectiveness of simple treatment methods to reduce their levels. While current PFAS levels in most water samples are not a major health concern, continual monitoring and regulation are necessary to protect public health. The researchers provided valuable data on PFAS presence in drinking water and practical solutions to mitigate consumer exposure. The study is a significant step towards ensuring safer drinking water for communities worldwide.
Bottled water from different countries showed varying levels of PFAS contamination, with natural mineral water containing higher concentrations than purified water. PFAS concentrations in most individual samples were below health advisory levels set by regulatory agencies, except for tap water samples from Shenzhen, China where PFOS concentrations exceeded the maximum contaminant level established by the US Environmental Protection Agency. The researchers found no significant difference in PFAS concentrations based on the type of bottled water (glass or plastic) or the addition of carbonation.
PFAS are commonly used in industry and consumer products for their water and stain repellent properties. While some PFAS have been banned, others are still widely used with their toxic effects not fully understood. PFAS can enter the body through various means such as ingestion, inhalation, or skin absorption, leading to adverse health effects such as impaired liver function, decreased birth weight, and increased cancer risk. The findings underscore the importance of increased awareness about PFAS presence in drinking water and the potential health risks associated with consumption.
The research emphasized the need for ongoing monitoring and regulation to protect public health from PFAS contamination. The study also highlighted the influence of lifestyle and economic conditions on potential health risks associated with PFAS in drinking water. Future research should focus on exploring these factors from a socio-economic perspective to better understand and address the impact of PFAS exposure. The study provided important data on PFAS contamination in drinking water and practical solutions for reducing consumer exposure, emphasizing the importance of ensuring safer drinking water for communities globally.