The AZUD WATERTECH GW puts greywater to use. It is not for human consumption, however in techniques of using grewayter the aim is to treat it for reuse in irrigation and toilets. Sinks, bathtubs, and showers is where greywater comes from. Commonly referred to as fecal, served, or black water, grewater has lower concentrations of suspended solids and organic matter. From detergents and soaps it may contain higher concentrations of chlorinated chemicals and phosphate. A pipe for the collection of greywater must be independent from the drain pipe for sewage in households or buildings where the installation will be performed. There should also be a supply of treated water.