Question

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.

Answer 1

Answer:

Create an air gap to prevent backflow.

Explanation:

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.

Answer 2

Answer:

D.

Explanation: