10 cleanest countries in the world as per EPI index

On an individual level, it’s about daily habits, but when it comes to ranking nations on the basis of cleanliness, a wide variety of factors come into play. Pollution levels, climate change impact, waste management, deforestation, and some prominent factors considered while ranking countries in this regard. The Environmental Performance Index (EPI), which is a globally recognised assessment tool, ranks nations based on environmental health and ecosystem vitality. Its latest data, updated last in 2024, highlights how certain countries, many of them in Europe, are consistently leading the way by adopting sustainable policies, reducing emissions, and improving waste management. Here are 10 nations leading the world in cleanliness, sustainability, and environmental performance, based on EPI performance.

Denmark performs outstandingly on this measure, recording an Environmental Performance Index score of 77.9. It leads the rankings due to a combination of robust environmental policies, a well-developed renewable energy framework, and sustained efforts to promote clean and green living. This long-term commitment to eco-friendly infrastructure positions Denmark as a global benchmark for environmental performance.

Next up is Malta, coming next to Denmark. Scored comparatively high on EPI index, this country showcased how being a small nation still managed to succeed with strong environmental intent. Malta has made substantial progress in waste management, and sustainability initiatives, despite limited landmass and resources, earning itself the esteemed second position in the list.

The United Kingdom also performs strongly, earning a score of 77.7. Through sustained efforts to cut emissions and expand renewable energy, the country has remained consistent in its push for cleanliness, with ongoing environmental reforms contributing to its high ranking.

Apart from being the happiest country in the world, Finland is also one of the world’s most environmentally conscious and clean nations. With focus on forest conservation, and sustainable technology, it can be understood why Finland continues to consistently rank high in terms of happiness. Also, its strong EPI score reflects its dedication to work on this front too.

Its effective pollution control measures, and serious environmental action have helped it to rank in this position with favourable EPI score. There are advanced waste treatment systems in place, and clean transport initiatives that support long-term ecological stability.

Known globally for its clean cities and strict environmental laws, the country continues to prioritise sustainability across public infrastructure and lifestyle. Also, Switzerland’s dedication to environmental cleanliness helped it to get a good EPI score and secure a position in this list.

Sweden is at par with Switzerland in this list with an exact EPI score of 727. Its emphasis on clean energy, carbon neutrality, and green living makes it one of the most progressive countries in global environmental efforts.

Thanks to its strong air quality standards and commitment to sustainable agriculture, Austria performed quite strongly, and had an EPI score of 66.5. Its policies ensure that both urban and rural regions maintain high levels of environmental cleanliness.

Iceland has made remarkable progress in terms of environmental performance, which is then is exquisitely complemented by its natural beauty. With a score of 62.8, the nation benefits immensely from little pollution, geothermal energy, and a culture that values peace with the natural world.

Rounding off the list is Norway, with an EPI score of 59.3. Environmental awareness, clean energy investments, and conservation policies contribute to its reputation as one of the cleanest and most sustainable countries in the world.