Every minute, over 1 million plastic water bottles are sold worldwide, leading to more than 1.3 billion bottles being consumed each day and over 500 billion annually. This massive use of single-use plastic contributes to growing waste and pollution, with tiny plastic particles—known as microplastics and nanoplastics—found in human organs such as the liver, kidneys, and intestines. While the long-term health effects of these tiny plastics are still being studied, early research suggests possible risks that remain a concern for scientists and public health experts. A recent study surveyed over 15,000 people from 81 countries and found that bottled water use is influenced by a range of factors, including age, education level, access to clean drinking water, and exposure to advertising. The research, published in the Journal of Cleaner Production, highlights that even those who are aware of the risks associated with single-use plastic bottles may not change their habits. This suggests that awareness alone may not be enough to reduce plastic bottle consumption. The survey found that younger and more highly educated individuals are more likely to use single-use bottles, often perceiving them as more convenient and safer from harmful microbes. In contrast, older individuals tend to use refillable bottles and are more likely to recycle. A majority of respondents—75%—believed that single-use water bottles contain microplastics, and 70% linked these plastics to cancer risk. The study identified three main groups of bottled water consumers: those who use it for convenience while traveling, those influenced by media and social trends, and those who use it due to necessity or lack of alternatives. Access to safe drinking water was a major factor in bottled water consumption, with nearly 78% of respondents reporting regular exposure to places where clean water was not available. In areas with limited access to safe water, bottled water use was higher. Advertising also played a key role, particularly among younger and more educated individuals, who were more likely to consume single-use bottles after seeing more bottled water ads. The researchers argue that reducing reliance on single-use plastic bottles requires policies that are tailored to local conditions. In wealthier countries, bottled water use is often driven by lifestyle and convenience, while in lower- and middle-income countries, it may be a response to poor access to clean water. The study emphasizes that there is no one-size-fits-all solution, but nearly all respondents said they would switch to alternatives if clean water was readily available. This suggests that improving access to safe drinking water could be a key step in reducing plastic bottle use globally.