An official website of the United States government.

This is not the current EPA website. To navigate to the current EPA website, please go to This website is historical material reflecting the EPA website as it existed on January 19, 2021. This website is no longer updated and links to external websites and some internal pages may not work. More information »

Anaerobic Digestion Project Profiles

Descriptions of actual anaerobic digestion systems are important to understanding how the systems work and what the benefits are in the real world.  The project profiles are organized into three categories: