When we talk about the cleanest drinking water, we’re referring to countries where tap water is not only accessible but also safe, pure, and consistently monitored. In this article, we’ll rank the top 20 countries based on the availability and quality of their drinking water. Our rankings come from trusted sources, including the Yale Environmental Performance Index (EPI), WHO, UNICEF, and OECD reports. These organizations provide data on water quality, safety, and access across the globe. This list excludes nations with significant regional disparities in water quality, ensuring that each country on the list provides reliable clean water to all its citizens. Whether sourced from pristine mountain springs or advanced purification systems, these countries lead the way in offering safe tap water to their residents. We’ll explore each country, shedding light on how they maintain such high water quality standards.
20: Belgium
Belgium ranks #20 for having some of the cleanest drinking water in the world. The country benefits from a well-established water treatment system that ensures nearly 100% of the population has access to safe drinking water. Despite its dense population, Belgium enforces strict regulatory systems, and authorities regularly test tap water to meet high safety standards. According to the WHO, 100% of Belgians have access to safely managed drinking water services. However, while most tap water is free from contaminants, Belgium faces challenges from occasional pollution due to industrial activities, such as the presence of PFAS (forever chemicals) from old industrial sites. Water quality remains very high, and authorities are taking measures to clean up and prevent such issues. Thanks to strong environmental regulations, Belgium’s water remains among the safest in Europe.