Terra Preta Sanitation

Terra preta sanitation is the concept of reuse of organic wastes (e.g. garden and kitchen wastes, human faeces and urine) by producing highly fertile and long lasting terra preta soils in a four-step process: (1) collection, (2) lacto-fermentation, (3) addition of charcoal and vermicomposting, (4) incorporation of terra preta compost into soils.