The SOIL Guide to Ecological Sanitation was created in response to increasing requests from individuals and organizations interested in starting ecological sanitation (EcoSan) projects across the globe. This guide is meant to be as comprehensive as possible within the scope of our experience. This first edition
of The SOIL Guide to Ecological Sanitation focuses on urine diversion toilets (also called UD toilets or dry composting toilets), though there exist, and SOIL has built, many other types of EcoSan toilets.