|Greywater Irrigated Garden from|
a California Study
What is greywater?
Any washwater that has been used in the home, except water from toilets, is called greywater . Dish, shower, sink, and laundry water comprise 50-80% of residential "waste" water. This may be reused for other purposes, especially landscape irrigation.
(This is the definition common in Europe and Australia. Some jurisdictions in the US exclude kitchen sink water and diaper wash water from their definition of greywater . These are most accurately defined as "dark greywater "). http://www.greywater.net/