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Greywater is wastewater generated by household processes such as washing dishes, laundry and bathing. Greywater is distinct from wastewater that has been contaminated with sewage, which is known as blackwater.

There are numerous processes such as using reedbed filter systems, the wetpark systems or the Living Wall that can be used to clean up greywater.

Recycled greywater from showers and bathtubs can be used for flushing toilets, which saves great amounts of water. Many attempts at this have been made in Germany.

Topics related to waste

Sewerage

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Topics: Greywater, Greyhound, Grey Matter, Greyhound Racing, Greyhawk...

GreyhoundThis article is about the breed of dog; for other meanings of Greyhound see Greyhound (disambiguation). This ancient canine breed traces its origins back to ancient Egypt where a bas-relief depicting a greyhound was found in a tomb built in 4000 BC. Histo	Grey matterGrey matter is a category of nervous tissue with many nerve cell bodies and few myelinated axons. Grey matter looks reddish grey on a freshly removed brain. It forms the superficial parts of the brain and the deep parts of the spinal cord. It is composed	GreyThe word grey is also spelled gray see Gray for topics with this spelling. The colour grey (or gray). Grey County, Ontario Grey is an electorate (electoral district) in South Australia. People whose surname is or was Grey include Albert Grey, 4th Earl Gre
Greyhound racingTampa, Florida, USA on February 9 1909 Greyhound racing is the sport of racing greyhounds. The dogs chase an artificial hare on a track until they arrive at the finish line. The one that arrives first is the winner. Modern greyhound racing has its origins	GreyhawkGreyhawk is a fictional world for the role-playing game Dungeons & Dragons''. It is the earliest of the D&D universes, and much of the rules design occurred in conjunction with game play by Gary Gygax and others in and around Castle Greyhawk and its dunge	Greyhound (cocktail)A greyhound is a cocktail consisting of 6 ounces of grapefruit juice and 1. 5 ounces of vodka, mixed and served over ice. Salt the rim of the glass to turn it into a salty dog. Cocktails with vodka.
Grey Peaks National Park	Grey Eagle, Minnesota	Grey Eagle Township, Minnesota
Grey Cloud Island Township, Minnesota	Greycliff, Montana	Greyfriars, Oxford
Grey Forest, Texas	Greybull, Wyoming	Grey area

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