A recycling system for graywater use reduces drinking water consumption and wastewater by around 30 percent. According to the Fachvereinigung Betriebs- und Regenwassernutzung, a person in the household uses about 55 liters of gray water per day. To ensure that the lightly polluted graywater produced by showering, bathing or washing with the washing machine does not find its way unused to...