Whenever the owner, agent, lessee or person in charge, possession or control of any building, structure or premises shall give notice in writing to the superintendent of water that any building is vacant or unoccupied, and request the water department to turn off the water, the superintendent of water shall at once cause the water supply of such building to be cut off. When the owner, agent or lessee shall make a formal request that the supply of water be turned on, it shall be done free of charge.
(1929 Code, § 802)