Increasing world populations require both fresh water and safe ways to dispose of wastewater and also the demand for water reuse will increase. Recycled water has been treated to remove dirt, solids, and many impurities, and reused for a variety of applications including irrigation, landscaping, and for recharging groundwater aquifers. Treating wastewater for reuse is an important part of water cycle and conservation efforts.
Image source: United Nations University Institute for Water, Environment and Health and the UN Office of Sustainable Development, in collaboration with Stockholm Environment Institute.
Image license: CC NY-ND