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GreywaterGreywater 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. In the water damage restoration industry, grey water is considered to be any water from the exterior of the home, or clean water that has been standing for more than 48 hours. There has been a trend recently to classify any water which has touched carpeting as grey water, due to the large quantities of unknown contaminants present in most carpets. Such carpet is usually salvagable, however it is recommended by the Institute of Inspection, Cleaning and Restoration Certification that carpet contaminated with grey water be cleaned with a hot water extraction process. See also Night Soil
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