Update of the Integrated Water Demand Forecast for the City of Hamburg until 2045

Abstract

The development of future water demand is essential for a water utility such as HAMBURG WASSER with respect to water resources as well as technical and financial management. At present, yearly water demand is relatively constant after three decades of significant decrease. Specific water demand in households is expected to go down at a slower rate. Decreasing specific household demand will be compensated by a slightly increasing number of inhabitants, i ncreasing industrial and commercial demand as well as an increased supply to neighboring utilities. The water demand study presented in this article details valuable insights into the sectoral as well as spatial development of water demand.