(A) Except where this section provides more stringent requirements, the definitions, standards, requirements and regulations set forth in the state’s Administrative Rules pertaining to public water supply systems and specifically OAR 333, div. 61, in effect on the date this section becomes effective are hereby adopted and incorporated by reference.
(B) The owner of property to which city water is furnished for human consumption shall install in accordance with city standards an appropriate backflow prevention devices on the premises where any of the following circumstances exist:
(1) Those circumstances identified in regulations adopted under division (A) above;
(2) Where there is a fire protection service, an irrigation service or a non-residential service connection which is two inches or larger in size; and/or
(3) Where the potable water supply provided inside a structure is 32 feet or more, higher than the elevation of the water main at the point of service connection.
(C) All double check detector assemblies used for system containment on fire protection services shall be approved by the state’s Health Division. The meter register on all double check detector assemblies shall be indicated in cubic feet measurement.
(D) Except as otherwise provided in this division (D), all irrigation systems shall be installed with a double check valve assembly. Irrigation system backflow prevention device assemblies installed before the effective date of this section, which were approved at the time they were installed but are not on the current list of approved device assemblies maintained by the state’s Health Division, shall be permitted to remain in service; provided, they are properly maintained, are commensurate with the degree of hazard, are tested at least annually and perform satisfactorily. When devices of this type are moved, or require more than minimum maintenance, they shall be replaced by device assemblies which are on the Health Division list of approved device assemblies.
(E) Any installation, corrective measure, disconnection or other change to a backflow prevention device shall be performed at the sole expense of the owner of the property. All costs or expenses for any correction or modification to the city’s system caused by or resulting from a cross-connection shall be the responsibility of the owner and/or the user of the cross-connection.
(F) Any backflow prevention device which is installed on property for the protection of the city water supply shall be tested at the time of installation and immediately after the device is moved or relocated. The property owner shall forward the results of such testing to the city’s Public Works Director within ten days of the date of installation or relocation.
(Prior Code, § 3.20.010) (Ord. 381, passed 3-2-2009)