(a) The backflow prevention assembly protection which is required under this subchapter shall be any of the duly nationally recognized and authorized backflow prevention assemblies listed in a state approved Plumbing Code, or as determined by the regulatory authority. The regulatory authority prior to installation must have approved each backflow prevention assembly. Failure to obtain such approval prior to installation of the backflow prevention assembly may result in the backflow prevention assembly failing to meet final approval by the regulatory authority. The city shall determine the type and location backflow assembly to be installed within the area served by the city. The assembly will be required in each of the following circumstances, but is in no way limited to the following circumstances:
(1) The nature and extent of any activity on the premises, or the materials used in connection with any activity of the premises, or materials stored on the premises, could contaminate or pollute the potable water supply.
(2) Premises having any one (1) or more cross-connections shall require an atmospheric vacuum breaker device (AVB) that protects connections.
(3) Internal cross-connections are present that are not correctable.
(4) Intricate plumbing arrangements that are present which make it impractical to ascertain whether cross-connections exist.
(5) There is unduly restricted entry so that inspections for cross-connections cannot be made with sufficient frequency to assure that cross-connections do not exist.
(6) Installation of an approved backflow prevention assembly is deemed to be necessary to accomplish the purpose of these regulations in the judgment of the city.
(7) An appropriate cross-connection survey report form has not been filed with the Public Works/ Water Utilities Department of the city upon request of the city.
(8) A fire suppression system that is connected to the city's water system.
(9) All new construction, if deemed necessary, in the customer service inspection. The type of assembly required will be determined by the degree of hazard.
(10) When a building is constructed on commercial premises, and the end use of such a building is not determined or could change, a reduced pressure principle backflow prevention assembly may be installed at the service connection that supplies water for public domestic use.
(11) Any used water return system.
(12) In the event a point-of-use assembly has not had the testing or repair done as required by this subchapter, a premises isolation assembly will be required.
(13) If it is determined that additions or alterations have been made to the plumbing system without obtaining proper permits, premises isolation may be required.
(14) All multistory buildings or any building with a booster pump or elevated storage tank.
(15) Retrofitting will be required on all high hazard connections and wherever else the city deems necessary to retrofit.
(b) All backflow prevention assemblies installed after the effective date of this subchapter shall be installed in a manner designed to facilitate ease of inspection by the city. Any currently installed backflow prevention assemblies which are located in inaccessible locations, or where the tester is subject to physical danger shall be relocated to approved locations following current national guideline standards.
(Ord. 7-15-03-1, passed 7-15-03)