CPO PRACTICE EXAM 2026 FULL
COMPILATION OF QUESTIONS AND ANSWERS
VERIFIED WITH A 100 PERCENT PASS RATE
©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?
A. 6 gallons
B. 3.5 gallons
C. 9 gallons
D. 35 gallons. Answer:B. 3.5 gallons
©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:
A. too much free chlorine in the water
,B. too few swimmers in the pool
C. high levels of chloramines in the pool
D. high calcium levels in the water. Answer:C. high levels of
chloramines in the pool
©To determine the level of chloramines in the water, you should do
which of the following?
A. test for free chlorine and pH, then divide the pH number by the free
chlorine number
B. test for total chlorine and free chlorine, then subtract the free chlorine
number from the total chlorine number
C. test for total chlorine and combined chlorine, then subtract the
combined chlorine number from the free chlorine number
D. test for total alkalinity and pH, then multiply the total alkalinity
number by the pH number. Answer:B. test for total chlorine and free
chlorine, then subtract the free chlorine number from the total chlorine
number
©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
pH is 7.6
, What is the level of chloramines in this pool?
A. 3.6
B. .8
C. -.8
D. 2.8. Answer:
©To remove the chloramines in the pool in question #5, how much of
the following compounds would be needed?
A). Using Chlorine gas:
A. 4 lbs.
B. 24.13 lbs.
C. 5.666 lbs.
D. 2.413 lbs.
B). Using Sodium Hypochlorite:
A. 12 gallons
B. 2.48 gallons
C. 4.05 gallons
D. 3.11 gallons
C). Using Calcium Hypochlorite:
COMPILATION OF QUESTIONS AND ANSWERS
VERIFIED WITH A 100 PERCENT PASS RATE
©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?
A. 6 gallons
B. 3.5 gallons
C. 9 gallons
D. 35 gallons. Answer:B. 3.5 gallons
©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:
A. too much free chlorine in the water
,B. too few swimmers in the pool
C. high levels of chloramines in the pool
D. high calcium levels in the water. Answer:C. high levels of
chloramines in the pool
©To determine the level of chloramines in the water, you should do
which of the following?
A. test for free chlorine and pH, then divide the pH number by the free
chlorine number
B. test for total chlorine and free chlorine, then subtract the free chlorine
number from the total chlorine number
C. test for total chlorine and combined chlorine, then subtract the
combined chlorine number from the free chlorine number
D. test for total alkalinity and pH, then multiply the total alkalinity
number by the pH number. Answer:B. test for total chlorine and free
chlorine, then subtract the free chlorine number from the total chlorine
number
©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
pH is 7.6
, What is the level of chloramines in this pool?
A. 3.6
B. .8
C. -.8
D. 2.8. Answer:
©To remove the chloramines in the pool in question #5, how much of
the following compounds would be needed?
A). Using Chlorine gas:
A. 4 lbs.
B. 24.13 lbs.
C. 5.666 lbs.
D. 2.413 lbs.
B). Using Sodium Hypochlorite:
A. 12 gallons
B. 2.48 gallons
C. 4.05 gallons
D. 3.11 gallons
C). Using Calcium Hypochlorite:
