Water reuse in Spain: Data overview and costs estimation of suitable treatment trains Review Article

Until now, there has not been a compilation of data concerning the reuse of treated effluent in Spain. Since January 2005 and at the request of the Ministry of Environment and Rural and Marine Affairs, the Hydrology Research Center (CEH) of CEDEX has been preparing a Database with information regarding the reuse activities in every Autonomous Community. This information compiles the types and characteristics of regeneration treatments adopted for various uses and the places where regenerated water is being used. In addition, it includes regenerated treatment under construction and future projects as well, which have been gathered together from different sources such as River Basin District Management or Autonomous Communities Reuse Programs. This whole laborious job is composed of four main parts: Database design, fieldwork collection of data, checking and storage of data and to make easier the management of data and connection of this database with a Geographic Information System (GIS). This basic information is essential to develop the State Water Reuse Plan that is currently being written in Spain.