Landscape Irrigation

Backflow Prevention


Acceptable Types of Backflow Preventers for Culinary Landscape Irrigation:
  • Atmospheric Vacuum Breaker (AVB)
  • Pressure Vacuum Breaker (PVB)
  • Reduced Pressure Principle Assembly (RP)
  • Spill Resistant Vacuum Breaker (SVB)
*Double Check Valve Assembly (DC)
DC's are not approved for Landscape Irrigation Systems

Pressurized Secondary Water (Non-Drinkable)


Pressurized secondary water is non-potable water commonly used for watering lawns.
Landscape irrigation systems that are only fed by secondary water are not required to have any form of backflow protection. However, you may want to trace plumbing lines to ensure there is not a direct cross connection between culinary and secondary systems. If you are unsure how to verify your plumbing is not at risk, contact a licensed plumber or Ogden City's backflow technician at 801-629-8384. Connections between secondary and culinary systems could cost owners thousands of dollars in lost water or cause harm to other residents in your area!

Culinary Water (Drinkable)


Pressurized culinary water is potable (drinkable) water and is commonly used for watering lawns.
Landscape irrigation systems that utilize culinary water are required to have a backflow preventer installed.

Landscape Irrigation Cross-Connections


If your irrigation system is able to utilize both secondary and culinary water, it is likely that you have a direct cross-connection. If this is the case, please immediately contact Ogden City's backflow technician at 801-629-8384.

View the Swing Joint Connection Detail (PDF) that illustrates the approved method for utilizing dual source systems.