Wake County CPO Practice Test 2025 – Complete Exam Prep

Question: 1 / 400

What is the purpose of a calcium hardness test in pool maintenance?

To improve water clarity

To prevent corrosion and scaling in the pool system

The purpose of a calcium hardness test in pool maintenance is primarily to prevent corrosion and scaling in the pool system. Maintaining appropriate calcium levels is crucial because if the calcium hardness is too low, it can lead to the corrosion of metal components like heaters, ladders, and filters. This corrosion can damage the equipment and ultimately require costly repairs. On the other hand, if calcium levels are too high, it can cause scaling, which leads to cloudy water and can also result in clogged pipes and an inefficient filtration system.

Therefore, conducting a calcium hardness test is essential for ensuring that the pool water is balanced, protecting the infrastructure, and maintaining the quality and clarity of the pool water. Proper calcium hardness levels help maintain elegant pool aesthetics and safeguard the longevity of the pool equipment.

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To enhance the effectiveness of chlorine

To adjust the pool pH level

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