The 2022 Environmental Performance Index (2022 EPI) centers on three policy objectives: Environmental Health, Ecosystem Vitality and Climate Change. These are gauged using 40 indicators tracked in 11 issue categories:
Climate Change Mitigation
Sanitation & Drinking Water
Biodiversity & Habitat
For more information on the indicators, download the 2022 EPI Technical Appendix.
The EPI utilizes a proximity-to-target methodology focused on a core set of environmental outcomes linked to policy goals. The 2022 EPI includes 180 countries based on data availability.
For a more detailed methodology, review Chapter 15 of the 2022 EPI report.
EPI is produced by:
Yale Center for Environmental Law & Policy
195 Prospect Street
New Haven, CT 06511
Center for International Earth Science Information Network (CIESIN), Columbia University
PO Box 1000
61 Route 9W
Palisades, NY 10964
With support from the McCall MacBain Foundation.