Answer :
Final answer:
True, a cross-connection is a physical link between safe water and contaminated water. It is a point in a plumbing system where the potable water supply is connected to a non-potable source, potentially allowing contaminants into the water system. An example is the Flint, Michigan, water crisis.
Explanation:
True, a physical link between safe water and contaminated water is called a cross-connection. A cross-connection is a point in a plumbing system where the potable (safe) water supply is connected to a non-potable source, potentially allowing contaminants to enter the potable water system. Local plumbing codes typically have strict regulations to prevent these types of cross-connections. The prevention method can range from a simple one-way valve to prevent backflow to more sophisticated devices that constantly monitor the water quality. A negative example of the links between environment and health observed where a cross-connection has had negative consequences is the Flint, Michigan, water crisis, where pollution in the city water system negatively affected health outcomes.
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