Certified Pool Operator Practice Test 2025 - Free Pool Operator Practice Questions and Study Guide

Question: 1 / 400

After four turnovers, what percentage of pool water remains unfiltered?

1%

After four turnovers, only 1% of pool water remains unfiltered. This means that 99% of the pool water has been filtered and cleaned. Options B, C, and D are incorrect because they indicate higher percentages, which would mean a larger amount of unfiltered water. This would go against the purpose of turnovers, which is to remove as much debris and contaminants from the pool as possible. Therefore, the lower the percentage, the more effective the filtration process.

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2%

5%

10%

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