What “clean” means (and why EPI matters)
“Clean” isn’t just tidy streets—it’s measurable environmental health. The EPI ranks 180 countries using 58 indicators across 11 categories, including air quality, sanitation, biodiversity, waste management, and climate change. It’s the most widely cited, apples-to-apples benchmark for national environmental performance.
Top 10 Clean Countries in the World (2024 EPI)
The 2024 EPI is the latest edition available in 2025. Here are the overall leaders with their official scores:
| Rank | Country | EPI Score (2024) |
|---|---|---|
| 1 | Estonia | 75.7 |
| 2 | Luxembourg | 75.1 |
| 3 | Germany | 74.5 |
| 4 | Finland | 73.8 |
| 5 | United Kingdom | 72.6 |
| 6 | Sweden | 70.3 |
| 7 | Norway | 69.9 |
| 8 | Austria | 68.9 |
| 9 | Switzerland | 67.8 |
| 10 | Denmark | 67.7 |
Country-by-country highlights
1) Estonia — digital efficiency, real-world results
Estonia tops the rankings by pairing science-led policy with efficient governance. Strong scores in environmental health and ecosystem vitality reflect sustained emissions reductions and nature protection, aided by a digital-first public sector.
2) Luxembourg — small state, high standards
Luxembourg’s high EPI score mirrors consistent performance in sanitation, water, and environmental health, supported by dense green spaces and robust regulation.
3) Germany — systems and standards
Germany’s long-standing investments in clean technology, strict product and air standards, and structured waste systems underpin its top-tier EPI placement.
4) Finland — stewards of water and forests
Finland’s leadership in water quality and ecosystem vitality, plus sensible forestry management, keeps it among the cleanest countries in the world.
5) United Kingdom — steady multi-year gains
Progress in environmental health and pollution control, alongside expanded protections for nature, sustains the UK’s high ranking.
6) Sweden — circularity in action
Sweden’s circular economy ethos shows up in multiple indicators, from waste handling to environmental health outcomes.
7) Norway — clean energy backbone
Abundant renewables and strong environmental safeguards help Norway maintain excellent overall performance.
8) Austria — consistent across the board
Austria balances urban livability with landscape protection, translating to strong environmental health scores.
9) Switzerland — quality, codified
High infrastructure standards and rigorous enforcement support Switzerland’s clean air and water outcomes.
10) Denmark — livable design, low emissions
Denmark’s model of renewable energy adoption and human-centered urban planning keeps it firmly in the global top ten.
Beyond the headline: air, water, nature, climate
The EPI aggregates many dimensions of “cleanliness.” That means a country can be an overall leader without being #1 in every sub-indicator. For example, Air Quality leaders include Iceland, Norway, and Finland; in Waste Management, Singapore and Japan are top performers. Looking at sub-scores helps travelers, expats, and investors match priorities (e.g., clean air vs. recycling systems).
FAQs: Clean Countries in the World
How are the cleanest countries determined?
By the Environmental Performance Index, which compiles 58 indicators across 11 categories to compare environmental outcomes across 180 countries.
Which country is #1 right now?
Estonia ranks first in the 2024 EPI with a score of 75.7. See the official leaderboard here.
Is “clean” just about air quality?
No. Air is only one piece. The EPI also weighs sanitation, wastewater, biodiversity, climate, and more—so the cleanest countries excel across categories.
Do the rankings change every year?
The EPI is released in editions (the latest is 2024). Scores and ranks can change as countries improve policy and outcomes.
