A plumber has identified a cross-connection in a commercial laundry facility where the potable water supply is connected to a non-potable process water system without adequate protection. This situation presents a severe health hazard. What immediate action, as per an Authority Having Jurisdiction (AHJ) would likely be required?

Question: A plumber has identified a cross-connection in a commercial laundry facility where the potable water supply is connected to a non-potable process water system without adequate protection. This situation presents a severe health hazard. What immediate action, as per an Authority Having Jurisdiction (AHJ) would likely be required?

Answer options:

• Install an Atmospheric Vacuum Breaker (AVB) at the point of connection.
• Install a Double Check Valve Assembly (DCVA) to protect the potable supply.
• Request an inspection within 30 days to review the issue. ✅ Immediately disconnect the cross-connection or isolate the potable supply to prevent contamination.

Correct answer: Immediately disconnect the cross-connection or isolate the potable supply to prevent contamination.

Explanation: When a cross-connection presenting a severe health hazard is identified, the immediate action required by an AHJ is to disconnect the cross-connection or isolate the potable water supply to prevent immediate contamination. AVBs and DCVAs are typically insufficient for severe hazard situations, and simply requesting an inspection without immediate action would be unacceptable given the risk.