1. Wastewater from sinks, showers, baths, and washing machines that is relatively clean and can be recycled for irrigation or toilet flushing.
Usage: plural form; environmental/sustainability context; also spelled 'grey water' or 'greywater'

Examples

• The new building collects graywaters from the bathrooms to use in landscape irrigation.
• Installing a graywater system can reduce household water consumption by up to 30 percent.
• Graywaters should not contain fecal matter or hazardous chemicals.
• Many drought-prone regions encourage homeowners to recycle graywaters for outdoor use.
• The municipality implemented a graywater recycling program to conserve drinking water supplies.