Certified Pool Operator Handbook Practice
Test – 2017 EXAM QUESTIONS AND ANSWERS
100% SOLVED (Newest 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: - Correct Answers ✅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? - Correct Answers ✅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: - Correct Answers ✅high levels of
chloramines in the pool
4. To determine the level of chloramines in the water, you
should do which of the following? - Correct Answers ✅test
for total chlorine and free chlorine, then subtract the free
chlorine number from the total chlorine
, Certified Pool Operator Handbook Practice
Test – 2017 EXAM QUESTIONS AND ANSWERS
100% SOLVED (Newest 2025)
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? - Correct Answers ✅0.8
7. You are the operator of a 330,000 gallon outdoor pool. Your
local health department requires you to perform a water
balance calculation once monthly. Upon performing the water
tests necessary to perform this calculation, you observe the
following readings in your pool: Total alkalinity is 50 ppm pH
is 7.2 Calcium Hardness is 150 ppm Temperature is 76
degrees F Total Dissolved Solids is 500 ppm Using these
readings, what is the Saturation Index for this pool? - Correct
Answers ✅-0.8
8. To adjust the tested Total Alkalinity in the pool in question
#7 to an acceptable level, which chemical would be most
appropriate? - Correct Answers ✅Sodium Bicarbonate
9. To adjust the tested pH in the pool in question #7 to an
acceptable level, which chemical would be most appropriate?
- Correct Answers ✅Sodium Carbonate
10. You are the CPO for a 28,000 gallon hotel pool. You
perform a water balance chemical test, and to your surprise,
the Calcium Hardness is only 100 ppm. How much calcium
Test – 2017 EXAM QUESTIONS AND ANSWERS
100% SOLVED (Newest 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: - Correct Answers ✅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? - Correct Answers ✅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: - Correct Answers ✅high levels of
chloramines in the pool
4. To determine the level of chloramines in the water, you
should do which of the following? - Correct Answers ✅test
for total chlorine and free chlorine, then subtract the free
chlorine number from the total chlorine
, Certified Pool Operator Handbook Practice
Test – 2017 EXAM QUESTIONS AND ANSWERS
100% SOLVED (Newest 2025)
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? - Correct Answers ✅0.8
7. You are the operator of a 330,000 gallon outdoor pool. Your
local health department requires you to perform a water
balance calculation once monthly. Upon performing the water
tests necessary to perform this calculation, you observe the
following readings in your pool: Total alkalinity is 50 ppm pH
is 7.2 Calcium Hardness is 150 ppm Temperature is 76
degrees F Total Dissolved Solids is 500 ppm Using these
readings, what is the Saturation Index for this pool? - Correct
Answers ✅-0.8
8. To adjust the tested Total Alkalinity in the pool in question
#7 to an acceptable level, which chemical would be most
appropriate? - Correct Answers ✅Sodium Bicarbonate
9. To adjust the tested pH in the pool in question #7 to an
acceptable level, which chemical would be most appropriate?
- Correct Answers ✅Sodium Carbonate
10. You are the CPO for a 28,000 gallon hotel pool. You
perform a water balance chemical test, and to your surprise,
the Calcium Hardness is only 100 ppm. How much calcium
