Over the past decade, the emergence of "sustainable development" has transformed much of the built environment. The growing recognition that long-term environmental costs must be internalised in all design questions has led to significant innovation and change. One of the early proponents of "sustainable development"; Dragados has integrated it throughout its entire operation. Given the long-term consequences throughout the world, water resource projects are at the forefront of these new innovations, from supply, treatment and increasingly, reuse of the water. Dragados has worked throughout the world meeting this new and complex demand.