Plumber Red Seal · Question
A commercial building's landscape irrigation system is directly connected to the municipal water supply. Which backflow prevention device is required for this high-hazard application?
Irrigation systems are considered a high hazard due to the potential for fertilizers, pesticides, and other contaminants to be drawn back into the potable water
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Question: A commercial building's landscape irrigation system is directly connected to the municipal water supply. Which backflow prevention device is required for this high-hazard application?
Answer options:
- Dual Check Valve (DuC)
- Pressure Vacuum Breaker (PVB)
- Double Check Valve Assembly (DCVA) ✅ Reduced Pressure Principle Backflow Assembly (RPBA)
Correct answer: Reduced Pressure Principle Backflow Assembly (RPBA)
Explanation: Irrigation systems are considered a high hazard due to the potential for fertilizers, pesticides, and other contaminants to be drawn back into the potable water supply. An RPBA offers the highest level of protection and is required for such severe health hazard applications.
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