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.
Disorders in the structure or function of humans, animals, or plants, especially those that cause certain signs or symptoms, or that affect a particular location and are not merely the direct result of physical injury.
Explanation: