All backflow prevention assembly installations shall follow the requirements set forth in the Oregon Administrative Rules (OAR) 333-061-0070 and OAR 333-061-0071, or as amended. The type of backflow prevention assembly required shall be commensurate with the degree of hazard that exists and must, at all times, meet the standards of the DHS – all backflow prevention assemblies required under this section shall be of a type and model approved by the DHS. In the event a premises isolation assembly is allowed to be installed inside the building, there will be no connections made between the assembly and the meter.