Abstract
When the various reuse systems are planned to install, it is important to consider whether the demand for materials reused is enough or not. In this study, the possible supply and demand of compost are estimated for each municipalities in Aichi Prefecture, and the feasibility for installation of compost facilities is investigated. As sources of compost, kitchen garbage from household, sewage sludge and livestock excreta are considered. If compost from excreta of cattle and hens is preferred to use than that from kitchen garbage, and that from kitchen garbage is preferred to use than that from sewage sludge, the compost from sewage sludge is not used in the most of municipalities in the object area.