CERTIFIED POOL OPERATOR HANDBOOK PRACTICE TEST QUESTIONS AND ANSWERS WITH SOLUTIONS 2025

1. You operate a 120,000-gallon pool, and upon performing your hourly chemical tests you observe the following readings: Total Available Chlorine reading is 1.6 free available chlorine reading is 1.5 pH is 7.4 Your supervising lifeguard has just informed you that you have had a fecal incident occur; a solid stool has been discharged into the pool. According to the Centers for Disease Control, as the CPO, you should do the following: - ANSWER clear the pool and raise the free chlorine to 2 ppm 2. Assuming that your local health department requires you to raise the free chlorine to 5 ppm, how much sodium hypochlorite would be needed to raise the free chlorine in the pool in question #1 to that level? - ANSWER 3.5 gallons 3. You are the CPO for an indoor health club pool. The facility manager informs you that he is receiving complaints about a strong chlorine odor in the pool area, and several members have complained of eye irritation. The most likely cause of these complaints is: - ANSWER high levels of chloramines in the pool 4. To determine the level of chloramines in the water, you should do which of the following? - ANSWER test for total chlorine and free chlorine, then subtract the free chlorine number from the total chlorine 5. You operate a 45,000 gallon indoor pool, and upon doing your hourly chemical tests you observe the following readings:Total available chlorine is 2.2 Free available chlorine is 1.4 and pH is 7.6 What is the level of chloramines in this pool? - ANSWER 0.8