Water scarcity affects one in three people globally, and climate change and population growth are only adding to water stress. Siemens' state-of-the-art water-reuse technologies provide compelling answers to the problems of water-supply conservation, management and protection. Water reuse conserves limited potable water supplies by using treated wastewater effluent for non-potable uses such as irrigation and use in industrial processes. Reusing water is a sustainable way of preserving a municipality's supply of drinking water. Siemens’ biological treatment, membrane filtration and separation, physical and chemical treatment and ultraviolet (UV) system technologies are all helping to provide a sustainable solution for communities and industries alike. An example of the successful use of Siemens' technology is the membrane bioreactor (MBR) system at the Beixiaohe plant in China, which provides 64 MLD of irrigation and utility water. Additionally, the Changi Water Reclamation Plant (WRP) in Singapore features Siemens’ odor control, primary and secondary wastewater treatment equipment and a full-scale MBR testing facility. It also features seven Memcor® membrane filtration systems for the Changi NEWater plant that is located on the roof of the Changi WRP. The WRP reclaims more than 28 million cubic feet (800,000 m³) a day of wastewater.