Certified Pool Operator
Comprehensive Resource To Help You Ace 2026-2027 Exams
Includes Frequently Tested Questions With ELABORATED
100% Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!! Current Update!!
Instant Download Pdf
1. Ideal bromine level in a pool and spa is: - Correct Answer: 3ppm to
6ppm
2. Ideal chorine level for a pool is: - Correct Answer: 1ppm to 5ppm
3. Maximum level of chlorine in a pool is: - Correct Answer: 5ppm
4. If you see bubbles coming up from a return, the possible cause could be -
Correct Answer: a bad seal on the hair/lint strainer - it is not properly
closed, or air is in the filter, or water level is too low
5. The hypochlorinator doesn't work. What could be a possible cause for this?
a) no chlorine in the vat
b) the injection fitting is clogged
c) the tube assembly needs to be changed
d) all of the above - Correct Answer: d) all of the above
,6. You go to the pool in the morning and notice the chlorine is at zero. You
hand-feed chlorine, how long to do you have to wait to allow people to go
into the pool.
a) no time
b) 15 minutes
c) 30 minutes
d) One day - Correct Answer: c) 30 minutes
7. When doing the pH test and the sample turns yellow, what does it mean? -
Correct Answer: pH is too low
8. When doing the pH test and the sample turns purple, what does it mean? -
Correct Answer: pH is too high
9. What do you do if a patron complains of a chlorine smell and their eyes are
stinging? - Correct Answer: Raise the chlorine to Breakpoint Level.
10.If the telephone at the pool doesn't work - Correct Answer: close the
pool
11.What should you use when handling chemicals? - Correct Answer:
Personal Protective Equipment - Gloves, Goggles, Apron
12.What happens if the alkalinity level is too low? - Correct Answer: pH is
difficult to maintain, the water will cause damage to the pool walls
,13.ADD CHEMICALS TO WATER; DO NOT ADD WATER TO CHEMICALS -
Correct Answer: ...
14.How do you lower the Calcium Hardness Level? - Correct Answer: Drain
water out and add fresh water. Dilute the water.
15.What should you have if the water is deeper than 5 ft? - Correct
Answer: Put up a safety line
16.If the chlorinator is working and you have chlorine in the vat, what is a
possible reason for the chlorine reading being 0? - Correct Answer: The
test could be bleached (chlorine level is too high)
17.What kind of filter media filters the smallest particles? - Correct
Answer: Diatomaceous Earth (DE)
18.To be a pool operator you must - Correct Answer: complete pool
operators training course
19.The strongest suction in the pool is - Correct Answer: the main drain
20.Electrical system at pool must have - Correct Answer: GFI's
21.The skimmer - Correct Answer: weir prevents floating material from re-
entering the pool.
, 22.Filtration is the - Correct Answer: physical process of water moving
through the system.
23.The time it takes for all the water to go through the filter system is the -
Correct Answer: turnover rate
24.In most jurisdictions the turnover rate is - Correct Answer: 6 hours
25.Algae forms because of - Correct Answer: poor circulation and/or low
chlorine levels
26.Most common form of algae - Correct Answer: green
27.Worst type of algae - Correct Answer: black
28.What is responsible for stains in the pool? - Correct Answer: copper,
iron, magnesium and other metals
29.To remove stains from the pool surface - Correct Answer: drain and
acid wash the pool
30.Adding chlorine to the pool to the pool - Correct Answer: raises the pH
Comprehensive Resource To Help You Ace 2026-2027 Exams
Includes Frequently Tested Questions With ELABORATED
100% Correct COMPLETE SOLUTIONS
Guaranteed Pass First Attempt!! Current Update!!
Instant Download Pdf
1. Ideal bromine level in a pool and spa is: - Correct Answer: 3ppm to
6ppm
2. Ideal chorine level for a pool is: - Correct Answer: 1ppm to 5ppm
3. Maximum level of chlorine in a pool is: - Correct Answer: 5ppm
4. If you see bubbles coming up from a return, the possible cause could be -
Correct Answer: a bad seal on the hair/lint strainer - it is not properly
closed, or air is in the filter, or water level is too low
5. The hypochlorinator doesn't work. What could be a possible cause for this?
a) no chlorine in the vat
b) the injection fitting is clogged
c) the tube assembly needs to be changed
d) all of the above - Correct Answer: d) all of the above
,6. You go to the pool in the morning and notice the chlorine is at zero. You
hand-feed chlorine, how long to do you have to wait to allow people to go
into the pool.
a) no time
b) 15 minutes
c) 30 minutes
d) One day - Correct Answer: c) 30 minutes
7. When doing the pH test and the sample turns yellow, what does it mean? -
Correct Answer: pH is too low
8. When doing the pH test and the sample turns purple, what does it mean? -
Correct Answer: pH is too high
9. What do you do if a patron complains of a chlorine smell and their eyes are
stinging? - Correct Answer: Raise the chlorine to Breakpoint Level.
10.If the telephone at the pool doesn't work - Correct Answer: close the
pool
11.What should you use when handling chemicals? - Correct Answer:
Personal Protective Equipment - Gloves, Goggles, Apron
12.What happens if the alkalinity level is too low? - Correct Answer: pH is
difficult to maintain, the water will cause damage to the pool walls
,13.ADD CHEMICALS TO WATER; DO NOT ADD WATER TO CHEMICALS -
Correct Answer: ...
14.How do you lower the Calcium Hardness Level? - Correct Answer: Drain
water out and add fresh water. Dilute the water.
15.What should you have if the water is deeper than 5 ft? - Correct
Answer: Put up a safety line
16.If the chlorinator is working and you have chlorine in the vat, what is a
possible reason for the chlorine reading being 0? - Correct Answer: The
test could be bleached (chlorine level is too high)
17.What kind of filter media filters the smallest particles? - Correct
Answer: Diatomaceous Earth (DE)
18.To be a pool operator you must - Correct Answer: complete pool
operators training course
19.The strongest suction in the pool is - Correct Answer: the main drain
20.Electrical system at pool must have - Correct Answer: GFI's
21.The skimmer - Correct Answer: weir prevents floating material from re-
entering the pool.
, 22.Filtration is the - Correct Answer: physical process of water moving
through the system.
23.The time it takes for all the water to go through the filter system is the -
Correct Answer: turnover rate
24.In most jurisdictions the turnover rate is - Correct Answer: 6 hours
25.Algae forms because of - Correct Answer: poor circulation and/or low
chlorine levels
26.Most common form of algae - Correct Answer: green
27.Worst type of algae - Correct Answer: black
28.What is responsible for stains in the pool? - Correct Answer: copper,
iron, magnesium and other metals
29.To remove stains from the pool surface - Correct Answer: drain and
acid wash the pool
30.Adding chlorine to the pool to the pool - Correct Answer: raises the pH
