Question detail
Explain why potable water must have low levels of microbes.
Try the question, check the answer, then read the explanation to understand the curriculum point.
At a glance
Question
Type
exam_style
Style
Topic
Using the Earth's resources and obtaining potable water
Question
Explain why potable water must have low levels of microbes.
Answer
Potable water must have low levels of microbes to prevent waterborne diseases and ensure it is safe for drinking. High levels of microbes can lead to infections and health risks for consumers.
Explanation
A strong answer should directly address the approved learning objective to explain why potable water should have low levels of dissolved salts and microbes. This question belongs to Potable water within Using the Earth's resources and obtaining potable water, so the response should use that exact curriculum context rather than a generic statement. The answer is correct when it names the key idea, explains the link to potable water, and keeps the wording specific to AQA GCSE revision.
Common mistake
Understanding Potable Water
Students often confuse potable water with chemically pure water, thinking both are the same.
Emphasize that potable water is safe to drink and may contain low levels of dissolved salts and microbes, while chemically pure water has no impurities at all.
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