Usage of rainwater coming from roofs for non-drinking purposes e.g. toilet flushing, car washing, water and general cleaning involves reservoirs that can be coupled together so that large amounts of water can be stored

摘要

With the installation of the system in an average dwelling house a roof surface of 50 square meters is available, so that the yearly volume of rainwater collected is 0.8 cubic meters per square meter, so that plus or minus 40 cubic meters of water can be collected, enough for four house occupants for toilet flushing on a yearly basis. Reservoirs (1) are used for collecting the water from the roofs and can be coupled together, so that a large quantity of water can be stored.