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 if a hose is attached or on a hose bibb if a hose is not attached and backflow prevention is required by law by:
2 Va. Admin. Code § 5-585-2260
Statutory Authority: § 3.2-5121 of the Code of Virginia.