12VAC5-421-2260: Backflow prevention device, when required

A plumbing system shall be installed to preclude backflow of a solid, liquid, or gas contaminant into the water supply system at each point of use at the food establishment, including on a hose bibb (threaded faucet) if a hose is attached or on a hose bibb if a hose is not attached and backflow prevention is required by law by:

1. Providing an air gap as specified under 12VAC5-421-2200;P or

2. Installing an approved backflow prevention device as specified under 12VAC5-421-2210.P