The reuse of municipal wastewater for beneficial purposes is an important aspect of the world's total water resources management.

Less than one percent of the world's water supply is potable, making water reclamation, also known as water reuse, a crucial practice that ensures there is plenty to go around. In addition to the use of reclaimed water for potable purposes, water quality experts support the consideration and use of highly treated reclaimed water for indirect potable reuse. The reuse of municipal wastewater for beneficial purposes is an important aspect of the world's total water resources management. Water reuse is a multifaceted issue and two important terms are used to describe how recycled water is an integral part of the water cycle. Recycled water generally refers to treated domestic wastewater that is used more than once before it passes back into the water cycle. The terms “reused” and “recycled” often are used interchangeably depending on where you are geographically.