Abstract: A system and a method is provided by distributing and monitoring hot and cold water supplied to individual building units in a multi-unit building or multi-unit building complexes, and billing and distributing revenues from the individual building units. The system and method comprise the use of a central water heating unit for heating water, a first distribution line connected to the heating unit, delivery lines extending from the first distribution line to individual building units, a second distribution line for distributing cold water, individual meters for measuring the quantity of either hot or cold water supplied to each building unit, a billing system for invoicing individual units and a distribution system for allocating revenue back to the building owner and to a maintenance company for maintaining the central water heating unit.