4.02.160 Cross connection control requirements.
A. The owner of premises to which the City supplies water shall install an approved backflow prevention device assembly on the owner’s service to the premises if on the premises:
1. There is an auxiliary water supply; or,
2. There is piping used to convey a liquid other than potable water, and the piping is under pressure and installed and operated in a manner that may cause a cross connection; or,
3. There is intricate plumbing that makes it impractical to ascertain whether a cross connection exists; or,
4. There is a pipeline larger than two inches internal diameter supplying public water to the premises; or,
5. There is a structure more than 30 feet high as measured between the highest peak of the roof of that structure and the elevation of the service connection at the public water main to those premises, and the pipeline supplying water to that structure is two inches or less in internal diameter; or,
6. There is a risk of back siphoning or back pressure; or,
7. There is a cross connection or a potential cross connection.
B. The owner of mobile apparatus to which the City supplies water shall provide for backflow prevention by installing a backflow prevention device assembly or providing an air gap separation on the mobile apparatus.
C. A backflow prevention device assembly required under this section shall be:
1. of a type and model approved by the State Health Division of the Department of Human Resources; and
2. installed in accordance with standards approved by the State Health Division of the Department of Human Resources.
D. An air gap separation required under this section shall be installed in accordance with standards approved by the State Health Division of the Department of Human Resources.
E. Installation, repair, disconnection or other modification of a backflow prevention device assembly or air gap separation shall be at the sole expense of the property owner or the owner of mobile apparatus on which the assembly or separation is located. If modification of the City’s water system is required to allow compliance with the requirements of this section, the cost of such modifications may be added to the property owner’s water bill or may be billed directly to the property owner.
F. A backflow prevention device assembly installed before the effective date of this section shall be permitted to remain in service regardless of whether the devise is currently approved under subsection C of this section, so long as the device:
1. was an approved device by the State Health Division at the time of installation; and
2. was properly installed at the time of installation; and
3. is
a. properly maintained;
b. commensurate with the degree of hazard;
c. tested annually as required by BC 4.02.165; and
d. performs satisfactorily.
However, a backflow prevention device assembly used pursuant to this subsection shall be replaced by a device and in a manner approved by the Oregon State Health Division if the existing device is relocated or requires more than routine maintenance.
G. If the City has reasonable grounds to believe that a violation of this section has occurred, is occurring, or is likely to occur, then upon reasonable notice to tenant or property owner, the City may deny or discontinue water service to the premises where the violation is believed to exist. The denial or discontinuance of water service may continue until an appropriate backflow prevention device assembly or air gap separation is installed on the premises. [BC 4.02.160, amended by Ordinance No. 3667, 5/15/89]