Maintenance Technician 2025 Complete Practice Test

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What is the ideal pH level for pool water?

6.0 to 6.5

7.0 to 7.5

7.2 to 7.8

The ideal pH level for pool water is typically in the range of 7.2 to 7.8. This range is crucial for maintaining a safe and comfortable swimming environment. A pH level within this range helps to ensure that the chlorine used to disinfect the water is effective, as water that is either too acidic or too alkaline can hinder chlorine's ability to kill bacteria and other harmful pathogens. Additionally, maintaining this pH range helps to prevent damage to pool surfaces and equipment and minimizes irritation to the skin and eyes of swimmers.

When the pH is too low (under 7.2), the water can become acidic, leading to corrosion of metal components and irritation to the skin and eyes. Conversely, if the pH is too high (above 7.8), the water can become alkaline, which can result in cloudiness and scaling on the pool's surfaces, as well as reduced effectiveness of chlorine. Thus, keeping the pH within 7.2 to 7.8 is essential for both operational efficiency and user comfort.

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8.0 to 8.5

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