Praxis 5511 Practice Question
Distillation is one method of obtaining pure water, but this method is not currently used anywhere in the United States for municipal drinking water supplies. Which of the following statements best helps explain why distillation is not used for municipal water purification?
Correct Answer: D
Rationale: Distillation requires large amounts of energy and is expensive to perform on a large scale, making it impractical for municipal water purification. This method involves heating water to create steam and then cooling it back into liquid, which is energy-intensive and costly, especially for the volumes needed in cities.
Option A suggests contamination could occur post-purification, but municipal systems are designed to prevent this. Option B claims distilled water is unsafe, which is incorrect; distilled water is safe but lacks essential minerals. Option C implies complexity, yet many municipalities manage various purification methods effectively.
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