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gray water

dirty water from sinks, showers, bathtubs, washing machines, and the like, that can be recycled, as for use in flushing toilets.
Origin of gray water
1975-80 Unabridged
Based on the Random House Dictionary, © Random House, Inc. 2015.
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Examples from the web for gray water
  • Includes a relatively large loft area, gray water system, and a compost toilet.
  • The gray water tank holds water that drains from the kitchen and bathroom sinks.
  • The resort uses solar power and gray water recycling, limits water usage and stocks its restaurant with local foods.
  • Then dark gray water surged over the top of their building.
  • All gray water outlets must be clearly labeled to indicate that they dispense non-potable water.
  • gray water use could help reduce the demand for potable fresh water over the long term.
  • The project shall include the installation of a gray water system.
  • The drainage of gray water from any vehicle is prohibited.
Contemporary definitions for gray water

waste water from bathroom, kitchen, and laundry activities, esp. as it may be recycled for toilet and outside water uses; also written graywater's 21st Century Lexicon
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