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

Question: 1 / 400

Spas and hot tubs require a higher level of chlorine than in swimming pools. The free available chlorine concentration should be maintained at ppm with hourly checks during heavy use.

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Hot tubs require a higher level of chlorine than swimming pools because they have a higher water temperature, which can accelerate bacterial growth. The recommended free available chlorine concentration in hot tubs is between 1.0-3.0 ppm, while swimming pools typically only require a range of 1.0-1.5 ppm. Options beyond 3.0 ppm, like B, C, and D, may be too high and could potentially cause skin irritation or corrosion of the hot tub's surfaces. It's important to check and maintain the chlorine levels frequently, especially during heavy use, to keep the water clean and safe for use.

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