Backflow Prevention Practice Exam

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What can result from water supply contamination due to backflow?

A bad taste
Increased water pressure
Higher mineral content
Improved clarity

The correct answer is: Higher mineral content

Water supply contamination due to backflow can lead to higher mineral content in the water. When backflow occurs, potentially contaminated water can flow back into the potable water supply, introducing various chemicals, heavy metals, or minerals that are not normally present. This change in the water composition can significantly increase the mineral content. In contrast, while contaminated water might also lead to a bad taste, and measures that might arise due to pressure changes could arguably affect taste, the key consequence that distinguishes this scenario is the introduction of potentially harmful substances, which directly correlates to higher mineral content. Improved clarity is usually associated with clean water, not contaminated sources, so that option does not align with the situation described.