Economic models of toilet bowls are equipped with a two-volume flush or the possibility of manual interruption (you can not drain the entire tank at a time, but only half). Equip toilets with economical flush cisterns. The traditional flush cistern allows 10-12 liters per flush, the economy cistern 6 liters, with the economy button only 3 liters. In eco-format hotels and restaurants, a monoblock sanitary ware will be appropriate, where used water from the sink is used to fill the toilet bowl