Retrofitting shall be required on all service connections where an actual or potential cross-connection exists, or wherever else the District deems retrofitting necessary.
Non-residential service connections that do not have an approved assembly installed will be surveyed by the District. A District CCS will evaluate the survey results to determine the degree of hazard. A backflow prevention assembly and an installation deadline will be required that is commensurate with the degree of hazard. In accordance with section 1:05 of this policy, service connections identified as being a low hazard will be required to install a double check valve backflow prevention assembly (DCVA), and service connections identified as being a high health hazard will be required to install a reduced pressure backflow prevention assembly (RPBA).
The District will track changes in premise use and plumbing in coordination with the Authority having jurisdiction (i.e. local plumbing code enforcement agency). The District will survey future changes re-evaluate the degree of hazard and possibly change the backflow assembly requirement accordingly.