1. 1. You operate a 120,000-gallon pool, and upon performing your hourly chemical tests you
observe the following readings CORRECT ANSWER 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 CORRECT ANSWER
CORRECT ANSWER clear the pool and raise the free chlorine to 2 ppm
2. 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? CORRECT ANSWER 3.5 gallons
3. 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 CORRECT ANSWER
CORRECT ANSWER high levels of chloramines in the pool
4. 4. To determine the level of chloramines in the water, you should do which of the following?
CORRECT ANSWER test for total chlorine and free chlorine, then subtract the free chlorine number
from the total chlorine
5. 5. You operate a 45,000 gallon indoor pool, and upon doing your hourly chemical tests
you observe the following readings CORRECT ANSWER 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?
CORRECT ANSWER 0.8
6. 7. You are the operator of a 330,000 gallon outdoor pool. Your local health department requires
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CERTIFIED POOL OPERATOR HANDBOOK TEST
QUESTIONS AND ANSWERS
