Final answer:
To prevent backflow in a food establishment when an air gap is not practical, a manager can use alternative methods such as installing a backflow prevention device, implementing regular maintenance programs, and educating employees about proper food handling practices.
Step-by-step explanation:
To prevent backflow in a food establishment when an air gap is not practical, a manager can use alternative methods such as installing a backflow prevention device. This device creates a physical barrier to prevent the reverse flow of contaminated water into the main water supply. Another option is to implement a regular maintenance program to ensure that plumbing systems are functioning properly and are free from potential backflow hazards.
Additionally, the manager can review and update proper food handling procedures and educate employees about the potential risks of backflow. By emphasizing good hygiene practices and emphasizing the importance of maintaining a clean and safe environment, the manager can reduce the chances of contamination.
In summary, when an air gap is not practical, a manager can prevent backflow in a food establishment by using backflow prevention devices, implementing regular maintenance programs, and educating employees about proper food handling practices.