1. Air pollution: Linfen, China
2. Industrial chemicals: Bhopal, India
3. Mercury: Central Kalimantan province, Indonesia
4. Pesticide: Kasargod, India
5. Chemical weapons/manufacture waste: Dzerhinsk, Russia
6. Organic chemicals: Sumgayit, Azerbaijan
7. Lead: Tianying, China
8. Hexavalent chromium: Sukinda, India
9. Radiation: Chernobyl, Ukraine
10. Persistent organic pollutants (POPs): Arctic Canada