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What is a cross-connection?



A. A pressure gauge on a high-temperature warewashing machine

B. The spread of allergens from one food item to another

C. A link from a potable water system to a nonpotable water system

D. The open space between the floor drain and the drainpipe of a sink

Answer :

Final answer:

A cross-connection is a link between a potable and a nonpotable water system, which can pose health risks if contaminating substances enter the drinking water supply. It is crucial to ensure that such connections are properly managed to safeguard water quality. Examples include hoses submerged in contaminated water and unprotected faucets.


Explanation:

Definition of Cross-Connection

A cross-connection is a crucial term in public health and safety, especially concerning water quality. It refers to a direct link between a potable water system (which provides safe drinking water) and a nonpotable water system (which may contain contaminants or unsafe water).

Such connections can lead to dangerous scenarios where nonpotable substances can flow back into the drinking water supply, potentially causing health hazards.

Examples of Cross-Connections

  • Hoses submerged in a pool: If a garden hose is dipped into water that may contain chemicals or biological contaminants, it creates a risk for cross-contamination.
  • Unprotected faucets: A sink faucet without adequate protection can lead to backflow, where nonpotable water enters the drinking water supply.

To prevent cross-connections, it is vital to implement safeguards such as backflow preventers and maintain good plumbing practices.


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