Which statement correctly describes greywater?

• A. Greywater is water from plumbing fixtures excluding human body waste
• B. Greywater includes toilet waste
• C. Greywater is from industrial wastewater only
• D. Greywater is rainwater only

Answer: (A)

Greywater is wastewater from domestic plumbing fixtures that does not contain toilet waste. This means water from sinks, showers, bathtubs, and often clothes washing machines, depending on local rules. It is different from blackwater, which includes toilet waste. It is not rainwater or industrial wastewater in its typical residential sense. Understanding this distinction helps explain why the correct description is that greywater comes from plumbing fixtures excluding human body waste. Because it excludes toilet waste, greywater can be treated and reused for non-potable uses under proper guidelines, though cleaners and detergents can affect treatment and soil compatibility.