(A)   Purpose.  The purpose of these rules and regulations is:
      (1)   To protect the public water supply system from contamination or pollution by isolating within the customer’s water system contaminants or pollutants which could backflow through the service connection into the public water supply system;
      (2)   To promote the elimination or control of existing cross connections, actual or potential, between the public or consumer’s potable water system and non-potable water systems, plumbing fixtures and sources or systems containing substances of unknown or questionable safety; and
      (3) To provide for the maintenance of a continuing program of cross connection control which will prevent the contamination or pollution of the public and consumer’s potable water systems.
   (B)   Application.  These rules and regulations shall apply to all premises served by the public potable water supply system of the city.
   (C)   Policy.  The owner or official custodian shall be responsible for protection of the public water supply system from contamination due to backflow or back-siphonage of contaminants through the customer’s water service connection. If, in the judgment of the Director of Utilities and Engineering or his or her authorized representative, an approved backflow prevention device is necessary for the safety of the public water supply system, the Director of Utilities and Engineering shall give notice to the consumer to install the approved backflow prevention device at each service connection to the premises. The consumer shall immediately install the approved device or devices at his or her own expense; failure, refusal or inability on the part of the consumer to install the device or devices immediately shall constitute grounds for discontinuing water service to the premises until the device or devices have been installed. The consumer shall retain records of installation, maintenance, testing and repair as required in § 52.079(D)(4) for a period of at least five years.
(1980 Code, § 25.501)