How is an assembly approved?
The Building Inspection Division will determine the type of backflow prevention assembly and where it must be installed. A permit will be issued to a licensed plumber to install the assembly. After installation an inspector from Building Inspection will determine if the assembly is properly installed. A backflow prevention assembly tester registered with the City must test the assembly and certify that it is functioning properly through completion of a Backflow Prevention Assembly Test and maintenance Form. Until this form is received, the assembly will not be approved and a Certificate of Completion will not be issued.