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In a world where plastics have become an integral part of daily life, the ubiquitous presence of microplastics (MPs) is hardly surprising. However, the emergence of MPs in one of humanity’s most vital resources—groundwater—is concerning. This review explores the widespread reports of MPs in drinking water, examining their origins and the potential effects of their associated pollutants on human health. The exploration was facilitated through an exhaustive analysis of research contributions across the topic. Instances of MPs infiltrating drinking water have been documented across 42 countries, including Australia, Belgium, Brazil, Canada, China, Hong Kong, Iceland, Nepal, Nigeria, the United Kingdom, and the United States. The identification of the sources of these MPs is crucial, and this review clarifies several significant contributors. The sources encompass atmospheric contamination, the packaging and …