During refurbishment of a kitchen, which action is essential to ensure there are no cross-connections?

• A. Disabling all valves.
• B. Inspecting all connections and testing for backflow with water.
• C. Shutting off power to nearby equipment.
• D. Visually inspecting pipes for leaks.

Answer: (B)

Cross-connection protection means you must verify there is no path for contaminated water to enter the clean supply, especially when plumbing is being altered. During kitchen refurbishment, inspecting every connection and testing for backflow with water directly checks that there isn’t a hidden link that could allow reverse flow into the potable system. This confirms that fittings, valves, and any backflow prevention devices are correctly installed and still functioning, and that temporary changes haven’t created a cross-connection. Simply disabling valves might isolate sections but won’t prove there’s no cross-connection or backflow risk. Shutting off power is unrelated to water quality, and visually inspecting pipes for leaks doesn’t reveal cross-connections or backflow potential.