Personnel of the Water and Sewer Department who are authorized by the City Manager so to do may enter the premises of any water consumer, at any reasonable time and upon compliance with any applicable provision of law, in order to examine the pipes and fixtures, the quantity of water used and the manner of its use; and in case of fraudulent use of water on the part of the consumer, or the unnecessary waste thereof, the supply of water may be cut off from the premises by order of the Water and Sewer Department.
('69 Code, § 23-2)