The grey water system mainly consists of the installation of waste pipes from sinks, baths, showers and washing machines, which are connected to a grey water tank. A purification process takes place in the tank using a system of advanced filters. The purified water is then directed to the clean water tank, from where it is distributed through a piping system to cisterns, washing machines, garden sprinklers, etc. A pumping system is responsible for water distribution, i.e. a control panel or driver with pumps that supply the sanitary facilities.