Check out this infographic and article provided by Stephanie Johnson, senior staff officer with the Water Science and Technology Board of the National Academies of Sciences, Engineering, and Medicine. Her article on this new strategy for drought-stressed cities.
The National Academies of Sciences, Engineering, and Medicine recently published a report that analyzes the potential of graywater reuse, available treatment technologies and the human health and environmental risks associated with graywater reuse. The study’s committee concluded that reusing graywater can improve water conservation by expanding local water supplies and providing a drought-resistant year-round local water source.
Graywater reuse for toilet flushing and other indoor uses offers the greatest opportunities for water conservation and does not reduce the amount of water available to downstream water users, as use for outdoor irrigation can. This is a particular value in many western states, where water laws restrict some uses of alternative water supplies to protect the availability of water to downstream water rights holders.