A. Under the provisions of WAC 246-290-490, the purveyor’s (Water Division) responsibility for cross-connection control shall begin at the water supply source, include all the public water treatment, storage, and distribution facilities, and end at the point of delivery to the consumer’s water system.

B. When, in accordance with this chapter, an approved backflow preventer is required for the safety of the city water system, the Water Division shall ensure that cross-connections between the distribution system and a consumer’s water system are eliminated or controlled by the installation of an approved reduced pressure backflow assembly (RPBA) or air gap that provides premises isolation.

C. The Water Division shall give notice in writing to the property owner when premises isolation protection is required.

D. Plans shall be submitted to the Water Division for review and approval prior to the installation of any reduced pressure backflow assembly or air gap that provides premises isolation.

E. All approved backflow assembly and air gap installations required by the Water Division shall be inspected by a State Certified Cross-Connection Control Specialist from the Water Division.

F. All reduced pressure backflow assemblies shall be tested by a Washington State certified tester on the City’s approved Backflow Assembly Tester list prior to being placed in service. (Ord. 2072, 7/23/02)