A. It shall be the customer’s responsibility and at the customer’s expense to install a backflow-prevention device.

B. Only approved backflow-prevention devices, as stated or cited in this chapter, shall be installed. All devices shall be installed in accordance with city standards and a location approved by the city. At the time an application for a new water service is made by a potential customer, the director of public works and utilities and chief operator will review said application to determine the need for a backflow-prevention device. The installation of a backflow-prevention device on a new water service shall be a condition of water service and meter installation. The city will inspect the premises of existing water service connections and shall require the installation of a backflow-prevention device when, in the opinion of the director of public works and utilities and chief operator, the water connection may be subject to a potential hazard from backflow or back-siphonage. An existing backflow-prevention device which, in the opinion of the director of public works and utilities and chief operator, is a type that does not provide adequate protection for the degree of potential hazard from backflow or back-siphonage shall be upgraded. Installation of a backflow-prevention device, where required by the chief operator and director of public works and utilities, shall be installed and inspected within sixty days of said notification.

C. All presently installed backflow-prevention devices which do not meet the requirements of this section, but were approved devices for the purposes described herein at the time of installation and which have been properly maintained, shall, except for inspection and testing requirements under Section 15.09.060, be excluded from the requirements of this chapter so long as the director of public works and utilities and chief operator is assured that the devices will satisfactorily protect the public water system. Whenever an existing backflow-prevention device is moved from its present location or requires more than minimum maintenance or when the director of public works and utilities and chief operator finds that its maintenance may constitute a hazard to health, the device shall be replaced in accordance with the requirements of this chapter.