Metabolic flows

While there is an urgent need to extend infrastructure networks, and rehabilitate existing infrastructure to address capacity limitations, the GCR already faces unsustainable demand for raw-materials, water, energy and food, as well as growth in the production of waste, sewerage and pollution. There are uncertainties around the availability of natural resources, such as water and land, and concerns about the cost of services as demand outstrips supply for key inputs such as energy. Faced with the intersecting challenges of demand for services and infrastructure, and unsustainable growth, understanding the nature of resources flows through the GCR and the associated infrastructure needed to carry those flows, is an ever-growing concern for government authorities.