Abstract
This paper discusses how much regional social capital (RSC) has been used in municipal solid waste management from the view point of efficiency. In a recycling-based society, it is necessary that the local governments use RSC. The efficiency is analyzed using Data Envelopment Analysis: DEA. 47 capitals in Japanese prefectures are chosen as case study cities. The following results are obtained: The RSC is not always used for main management capacity. Even if RSC is rich, the contribution of RSC doesn't always increase. Otherwise the cities: big populations have high contribution of RSC. Especially the contribution of RSC increases for the cities: 0.5-1 million populations alter adopting 3R policies in 2000.
