The requirement for back-flow preventers to be installed on automatic sprinkler systems are usually included in the plumbing code.

• A. True
• B. False
• C. Not specified
• D. Optional

Answer: (A)

Backflow prevention is a cross-connection control measure that protects the potable water supply when a system is connected to it. Plumbing codes require backflow preventers at connections to potable water for systems that could backflow, including automatic sprinkler systems. This is why the statement is true—the plumbing code typically includes the requirement to install backflow preventers on sprinkler systems, ensuring that water from the sprinkler system can’t flow back into the public or potable water supply. The fire code may address testing, maintenance, and approved device types, but the fundamental requirement is found in the plumbing code.