The maintenance, including necessary repairs, of all backflow prevention devices or assemblies and cross connection control devices required by this chapter shall be the responsibility of the owner of property, equipment, or vehicle where an assembly or device is installed, and failure to adequately maintain any required device or assembly shall be a violation hereof. All installations and repairs of such devices or assemblies shall be effected by a certified journeyman plumber or other agent of the owner, provided he is a certified backflow technician as provided in this chapter, in either case. (Ord. 2006-10-003, 10-19-2006)