While water recycling already beginning to be introduced in some areas of Japan, Okinawa Prefecture Southern Agriculture and Forestry Civil Engineering Office is introducing a pilot plant into the Itoman City Purification Center, so as to investigate water recycling for agricultural purposes, leading towards introduction of an Okinawan-type water circulation system. While recycle technologies for waste water have reached a high level, issues remain concerning installation and operating costs. However, given the ripple effect in contributing to the environmental conservation of coral reef islands, water recycling could be a factor in raising the Okinawa brand.