Code Notes Backflow Devices and Protection of Water Supply based on the 2006 and 2009 IPC and IRC is a four-page laminated reference guide that identifies potential areas of contamination of the potable water supply and addresses the appropriate backflow prevention methods and devices in an organized and user-friendly approach. The information presented is in accordance with the requirements of the 2006 and 2009 editions of the International Plumbing Code and International Residential Code.

Coverage includes four main topics of discussion:

• Cross connection potentials and where backflow protection is required.
• Backflow prevention devices, methods and installation limitations.
• Other backflow prevention-related information.
• Significant changes to the 2009 International Plumbing Code and International Residential Code.

Illustrations of cross connection hazards and the most common methods and devices for backflow prevention help the reader understand the principles of water supply protection and the application of the relevant code provisions.