7 CLEANEST COUNTRIS IN THE WORLD

7. Iceland

7 CLEANEST COUNTRIS IN THE WORLD

6. Austria

7 CLEANEST COUNTRIS IN THE WORLD

5. Luxembourg

7 CLEANEST COUNTRIS IN THE WORLD

4. Sweden

7 CLEANEST COUNTRIS IN THE WORLD

3. Finland

7 CLEANEST COUNTRIS IN THE WORLD

2. Denmark

7 CLEANEST COUNTRIS IN THE WORLD

1. Switzerland

7 CLEANEST COUNTRIS IN THE WORLD