Greywater

Untreated wastewater that has not been contaminated by any toilet discharge, has not been affected by infectious, contaminated, or unhealthy bodily wastes, and does not present a threat of contamination from unhealthful processing, manufacturing, or operating wastes.

Graywater includes, but is not limited to, wastewater from domestic activities such as bathtubs, showers, bathroom washbasins, clothes washing machines, and laundry tubs, but does not include wastewater from toilets, kitchen sinks, and dishwashers.