What is greywater?

Greywater refers specifically to used water that has been generated from household activities, excluding water that has come from toilets as that is considered black water. Typical sources of greywater include water from sinks, showers, bathtubs, and washing machines. This type of water is often recyclable and can be reused for non-potable applications such as irrigation and flushing toilets, making it a valuable resource in sustainable water management practices.

By identifying used water from household activities as greywater, it highlights its potential for conservation and efficient resource use, particularly in areas facing water scarcity. Understanding the definition and scope of greywater is important for environmental awareness and developing systems that support water recycling within residential settings.