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Water Quality by Country 2024. Snapshot. The EPI assesses water quality based on the DALY rate (disability-adjusted life-years lost per 100,000 persons from unsafe drinking water). Ten European countries, including Austria, Finland, Greece, and Iceland, share the top EPI ranking for the cleanest water worldwide.
- Pollution May Be High
Country-by-country profiles of the nations with the worst...
- Pollution by Country 2024
Based on the AQI, many Asian nations rank among the world's...
- Pollution May Be High
The EPI ranks countries by how well they protect human health from environmental risks on two indicators: unsafe drinking water and unsafe sanitation. See the top 10 and bottom 10 countries, as well as the 10-year change in their scores.
CountryRankEpi Score10-year Change11000.311000.91100-11001- Bangladesh. Bangladesh is the most polluted country in the world, with an average PM2.5 concentration of 83.30, down from 97.10 in 2018. The country's primary environmental pollutants are air and water pollution, groundwater contamination, noise pollution, and solid wastes.
- Pakistan. The second-most polluted country in the world is Pakistan, which has an average PM2.5 concentration of 65.81. AQI levels in Punjab were consistently between the "near unhealthy" or "very unhealthy" ratings for most of 2019 and even reached as high as 484.
- Mongolia. Mongolia is the third-most polluted country in the world. Mongolia's average PM2.5 concentration is 62.00. The largest pollution source in Mongolia is the burning of coal and other biomass, such as wood or crop residue, in stoves.
- Afghanistan. Afghanistan is the fourth-most polluted country in the world, with an average PM2.5 level of 58.80. In 2017, numbers show that air pollution was more dangerous than the war in Afghanistan.
Based on the AQI, many Asian nations rank among the world's most polluted countries, including Bangladesh, Pakistan, Mongolia, Afghanistan, India, Indonesia, Bahrain, Nepal, Uzbekistan, and Iraq. Additional forms of pollution: microplastics, light pollution, and noise pollution.
CountryTotal Ghg Emissions 2022 (mton Co2eq)Co₂ Emissions 2022 (mton)Co₂ Per Capita 2022 (t)15684.6312667.438.856017.444853.7814.443943.262693.031.912579.81909.0413.31The EPI ranks 180 countries on their environmental performance using six indicators, including water and sanitation. See the country rankings, scores, and 10-year changes for water and sanitation, as well as other categories.
Explore the Pollution Index rankings by country for 2024, providing insights into environmental quality and pollution levels.
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However, one in four people in the world does not have access to safe drinking water, which is a major health risk. Unsafe water is responsible for more than a million deaths each year. This article looks at data on access to safe water and its implications for health worldwide.
