What does the term "greywater" refer to in stormwater management?

The term "greywater" specifically refers to reused wastewater that comes from sources such as sinks, showers, and washing machines, provided it does not contain contaminants from toilet waste. This distinguishes greywater from other types of waste, such as blackwater, which includes water that has been used with toilets and may contain hazardous pathogens. In the context of stormwater management, greywater can be an important resource for reducing the demand on potable water supplies by allowing for its reuse in irrigation and other non-potable applications. Therefore, the identification of greywater as non-contaminated by toilet waste is crucial in understanding its role in water conservation and management practices.