Green Space Irrigation: Reuse of Rainwater and Use of Wastewaters - Some Italian Examples

Among the new challenges of the EU there is water management, a limited and not renewable resource, whose consumption has to be controlled in a sustainable and wise way. In this context, irrigation of green spaces appears to be more and more a luxury to be achieved with alternative methods. Use of wastewaters, coming from depurators and also recollection and reuse of rainwater, coming from built areas, parking, etc., for public and private green irrigation, can play a strategic role for the environmental sustainability of irrigation practices. It allows a reduction of the drawing from water bodies and the “purification” of water receptor bodies. In addition, the use of tolerant and heat resistant species causes a reduction of irrigation volumes, that reduce consumption needs. In Italy, there are several experimented and adopted solutions. The work aims to describe those proposals that can be considered as models for future realization.