Certified Pool Operator Handbook Practice Test 2024-
2025 Exam Cpo-Certified Pool Operator Latest Exam
With 100+ Questions And Correct Answers
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
, Certified Pool Operator Handbook Practice Test 2024-
2025 Exam Cpo-Certified Pool Operator Latest Exam
With 100+ Questions And Correct Answers
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
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? - ANSWER---
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? -
ANSWER--Sodium Bicarbonate
9. To adjust the tested pH in the pool in question #7 to an acceptable
level, which chemical would be most appropriate? - ANSWER--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 chloride (77%) would be required
to increase this to 400 ppm?" - ANSWER--100.8 lbs.
2025 Exam Cpo-Certified Pool Operator Latest Exam
With 100+ Questions And Correct Answers
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
, Certified Pool Operator Handbook Practice Test 2024-
2025 Exam Cpo-Certified Pool Operator Latest Exam
With 100+ Questions And Correct Answers
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
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? - ANSWER---
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? -
ANSWER--Sodium Bicarbonate
9. To adjust the tested pH in the pool in question #7 to an acceptable
level, which chemical would be most appropriate? - ANSWER--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 chloride (77%) would be required
to increase this to 400 ppm?" - ANSWER--100.8 lbs.
