1. wastewater from sinks, showers, baths, and washing machines that is relatively clean and can be reused for irrigation or toilet flushing
Usage: also spelled greywater; environmental/sustainability context

Examples

• The new house has a graywater system that recycles water from the shower for the garden.
• Installing a graywater recycling system can reduce household water consumption by up to 30 percent.
• Graywater from the washing machine is stored in a tank before being used to water the lawn.
• Many drought-prone regions encourage homeowners to install graywater systems.
• The distinction between graywater and blackwater is important for proper wastewater management.