Certified Pool Operator Practice Test

Breakpoint chlorination in pool maintenance refers to the process of adding chlorine at a constant rate. This is because adding too much chlorine can result in free chlorine levels that are too high, which can cause irritation to swimmers and damage to pool equipment. Option B is incorrect because adding enough chlorine to reach free chlorine status is not a recommended practice. Option C is incorrect because chloramines, not free chlorine, are the compounds that need to be effectively destroyed for proper pool maintenance. Option D is incorrect as removing all chlorine from the pool would leave the water susceptible to bacteria and other contaminants.