Water source requirement during service testing of a fire hose

• A. A source large enough to fill the water tank
• B. A water source sufficient for charging the hose
• C. A source with chlorine added
• D. Any tap water source is fine

Answer: (B)

During service testing of a fire hose, you must fill the hose completely with water and pressurize it to the required test pressure, holding that pressure for the specified duration. To do this safely and accurately, the water source must be able to deliver enough flow to fully charge the hose and sustain the pressure throughout the test. If the source can’t provide that flow, the pressure will drop and the test may be invalid or unsafe. The option describing a source sufficient for charging the hose matches this need. Using a source just to fill a tank or adding chlorine isn’t part of the requirement, and not every tap water source guarantees enough flow for the test.