Which one of these tips for preventing contamination caused by plumbing is advised by the NRA's ServSafe program? Always attach
a hose to a faucet unless a backflow prevention device is attached. Create a cross-connection to prevent a backflow. Use pvc piping. Create an air gap to prevent a backflow.
An air gap prevents contamination of the water because it creates a space between the water outlet and a contaminated source. So, if there is, for example, a decrease in the pressure that pumps the water to the faucet, the water the air gap will prevent the contamination of potable water and the cause of different illnesses.
(a laboratory test to identify bacteria and other organisms from a sample of feces) can be used to determine the specific virus or germ that is causing gastroenteritis.
