Backflow Prevention Files

12–611.8. Backflow Prevention Files. A. Description: Files documenting the installation, maintenance and testing of the backflow prevention device. Information includes backflow prevention device test: name, address, location of device, valve test, signed, date; backflow prevention device certification: name, address, service address, file number, type of device, make, size, model number, serial number, tested by and approved by. B. Retention: 3 years, then destroy. HISTORY: Added by State Register Volume 27, Issue No. 5, eff May 23, 2003.